mirror of
https://github.com/Yetangitu/ampache
synced 2025-10-04 10:19:25 +02:00
144 lines
3.7 KiB
PHP
144 lines
3.7 KiB
PHP
<?php
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/* vim:set tabstop=8 softtabstop=8 shiftwidth=8 noexpandtab: */
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/**
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* Core Class
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*
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* PHP version 5
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*
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* LICENSE: GNU General Public License, version 2 (GPLv2)
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* Copyright (c) 2001 - 2011 Ampache.org All Rights Reserved
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License v2
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* as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*
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* @category Core
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* @package Ampache
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* @author Karl Vollmer <vollmer@ampache.org>
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* @copyright 2001 - 2011 Ampache.org
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* @license http://opensource.org/licenses/gpl-2.0 GPLv2
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* @version PHP 5.2
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* @link http://www.ampache.org/
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* @since File available since Release 1.0
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*/
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/**
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* Core Class
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*
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* This is really just a namespace class, it's full of static functions
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* would be replaced by a namespace library once that exists in php
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*
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* @category Core
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* @package Ampache
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* @author Karl Vollmer <vollmer@ampache.org>
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* @copyright 2001 - 2011 Ampache.org
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* @license http://opensource.org/licenses/gpl-2.0 GPLv2
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* @version Release: 3.6
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* @link http://www.ampache.org/
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* @since Class available since Release 1.0
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*/
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class Core {
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/**
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* constructor
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* This doesn't do anything
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*/
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private function __construct() {
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return false;
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} // construction
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/**
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* form_register
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* This registers a form with a SID, inserts it into the session variables
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* and then returns a string for use in the HTML form
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*/
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public static function form_register($name,$type='post') {
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// Make ourselves a nice little sid
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$sid = md5(uniqid(rand(), true));
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// Register it
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$_SESSION['forms'][$name] = array('sid'=>$sid,'expire'=>time() + Config::get('session_length'));
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switch ($type) {
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default:
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case 'post':
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$string = '<input type="hidden" name="form_validation" value="' . $sid . '" />';
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break;
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case 'get':
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$string = $sid;
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break;
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} // end switch on type
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return $string;
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} // form_register
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/**
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* form_verify
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* This takes a form name and then compares it with the posted sid, if they don't match
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* then it returns false and doesn't let the person continue
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*/
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public static function form_verify($name,$method='post') {
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switch ($method) {
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case 'post':
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$source = $_POST['form_validation'];
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break;
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case 'get':
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$source = $_GET['form_validation'];
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break;
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case 'cookie':
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$source = $_COOKIE['form_validation'];
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break;
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case 'request':
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$source = $_REQUEST['form_validation'];
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break;
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}
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if ($source == $_SESSION['forms'][$name]['sid'] AND $_SESSION['forms'][$name]['expire'] > time()) {
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unset($_SESSION['forms'][$name]);
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return true;
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}
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unset($_SESSION['forms'][$name]);
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return false;
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} // form_verify
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/**
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* image_dimensions
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* This returns the dimensions of the passed song of the passed type
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* returns an empty array if PHP-GD is not currently installed, returns
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* false on error
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*/
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public static function image_dimensions($image_data) {
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if (!function_exists('ImageCreateFromString')) { return false; }
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$image = ImageCreateFromString($image_data);
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if (!$image) { return false; }
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$width = imagesx($image);
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$height = imagesy($image);
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if (!$width || !$height) { return false; }
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return array('width'=>$width,'height'=>$height);
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} // image_dimensions
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} // Core
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?>
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