341 lines
9.0 KiB
PHP
341 lines
9.0 KiB
PHP
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<?php
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/**
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* @package AkeebaBackup
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* @copyright Copyright (c)2006-2010 Nicholas K. Dionysopoulos
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* @license GNU General Public License version 3, or later
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* @version $Id: update.php 305 2010-11-17 17:52:40Z nikosdion $
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* @since 2.2
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*/
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// Protect from unauthorized access
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defined('_JEXEC') or die('Restricted Access');
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jimport('joomla.application.component.model');
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/**
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* The Live Update model
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*
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*/
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class AkeebaModelUpdate extends JModel
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{
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private $update_url = '';
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/**
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* Public constructor
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* @param unknown_type $config
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*/
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public function __construct( $config = array() )
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{
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parent::__construct($config);
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$useSVNSource = AEPlatform::get_platform_configuration_option('usesvnsource', 0);
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// Determine the appropriate update URL based on whether we're on Core or Professional edition
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AEPlatform::load_version_defines();
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$fname = 'http://www.akeebabackup.com/updates/ab';
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$fname .= (AKEEBA_PRO == 1) ? 'pro' : 'core';
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if($useSVNSource) $fname .= 'svn';
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$fname .= '.ini';
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$this->update_url = $fname;
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}
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/**
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* Does the server support URL fopen() wrappers?
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* @return bool
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*/
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private function hasURLfopen()
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{
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// If we are not allowed to use ini_get, we assume that URL fopen is
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// disabled.
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if(!function_exists('ini_get'))
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return false;
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if( !ini_get('allow_url_fopen') )
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return false;
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return true;
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}
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/**
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* Does the server support the cURL extension?
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* @return bool
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*/
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private function hascURL()
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{
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if(!function_exists('curl_exec'))
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{
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return false;
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}
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return true;
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}
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/**
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* Returns the date and time when the last update check was made.
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* @return JDate
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*/
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private function lastUpdateCheck()
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{
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// Get a reference to component's parameters
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$component =& JComponentHelper::getComponent( 'com_akeeba' );
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$params = new JParameter($component->params);
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$lastdate = $params->get('lastupdatecheck', '2009-04-02');
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jimport('joomla.utilities.date');
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$date = new JDate($lastdate);
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return $date;
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}
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/**
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* Gets an object with the latest version information, taken from the update.ini data
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* @return JObject|bool An object holding the data, or false on failure
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*/
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private function getLatestVersion($force = false)
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{
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$inidata = false;
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jimport('joomla.utilities.date');
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$curdate = new JDate();
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$lastdate = $this->lastUpdateCheck();
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$difference = ($curdate->toUnix(false) - $lastdate->toUnix(false)) / 3600;
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$inidata = $this->getUpdateINIcached();
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$cached = false;
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// Make sure we ask the server at most every 24 hrs (unless $force is true)
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if( ($difference < 24) && (!empty($inidata)) && (!$force) )
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{
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$cached = true;
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// Cached INI data is valid
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}
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// Prefer to use cURL if it exists and we don't have cached data
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elseif( $this->hascURL() )
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{
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$inidata = $this->getUpdateINIcURL();
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}
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// If cURL doesn't exist, or if it returned an error, try URL fopen() wrappers
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elseif( $this->hasURLfopen() )
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{
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$inidata = $this->getUpdateINIfopen();
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}
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// Make sure we do have INI data and not junk...
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if($inidata != false)
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{
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if( strpos($inidata, '; Live Update provision file') !== 0 )
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{
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$inidata = false;
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}
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}
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// If we have a valid update.ini, update the cache and read the version information
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if($inidata != false)
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{
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if(!$cached) $this->setUpdateINIcached($inidata);
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$parsed=AEUtilIni::parse_ini_file($inidata, false, true);
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// Determine status by parsing the version
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$version = $parsed['version'];
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if( preg_match('#^[0-9\.]*a[0-9\.]*#', $version) == 1 )
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{
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$status = 'alpha';
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} elseif( preg_match('#^[0-9\.]*b[0-9\.]*#', $version) == 1 )
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{
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$status = 'beta';
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} elseif( preg_match('#^[0-9\.]*$#', $version) == 1 )
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{
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$status = 'stable';
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} else {
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$status = 'svn';
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}
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// Special processing for the link in Akeeba Backup Professional
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$suffix = '';
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if(AKEEBA_PRO)
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{
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$component =& JComponentHelper::getComponent( 'com_akeeba' );
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$params = new JParameter($component->params);
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$username = $params->get('update_username', '');
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$password = $params->get('update_password', '');
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if( !empty($username) && !empty($password) )
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{
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$suffix = '?username='.urlencode($username).'&password='.urlencode($password).'&format=raw';
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}
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}
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$ret = new JObject;
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$ret->version = $parsed['version'];
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$ret->status = $status;
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$ret->reldate = $parsed['date'];
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$ret->url = $parsed['link'];
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$ret->urlsuffix = $suffix;
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return $ret;
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}
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return false;
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}
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/**
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* Retrieves the update.ini data using URL fopen() wrappers
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* @return string|bool The update.ini contents, or FALSE on failure
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*/
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private function getUpdateINIfopen()
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{
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return @file_get_contents($this->update_url);
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}
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/**
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* Retrieves the update.ini data using cURL extention calls
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* @return string|bool The update.ini contents, or FALSE on failure
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*/
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private function getUpdateINIcURL()
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{
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$process = curl_init($this->update_url);
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curl_setopt($process, CURLOPT_HEADER, 0);
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// Pretend we are IE7, so that webservers play nice with us
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curl_setopt($process, CURLOPT_USERAGENT, 'Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; .NET CLR 1.0.3705; .NET CLR 1.1.4322; Media Center PC 4.0)');
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curl_setopt($process,CURLOPT_ENCODING , 'gzip');
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curl_setopt($process, CURLOPT_TIMEOUT, 5);
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curl_setopt($process, CURLOPT_RETURNTRANSFER, 1);
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curl_setopt($process, CURLOPT_SSL_VERIFYPEER, false);
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// The @ sign allows the next line to fail if open_basedir is set or if safe mode is enabled
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@curl_setopt($process, CURLOPT_FOLLOWLOCATION, 1);
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@curl_setopt($process, CURLOPT_MAXREDIRS, 20);
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$inidata = curl_exec($process);
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curl_close($process);
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return $inidata;
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}
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private function getUpdateINIcached()
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{
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$component =& JComponentHelper::getComponent( 'com_akeeba' );
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$params = new JParameter($component->params);
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$inidata = $params->get('updateini', "");
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return json_decode($inidata);
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}
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/**
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* Caches the update.ini contents to database
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* @param $inidata string The update.ini data
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*/
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private function setUpdateINIcached($inidata)
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{
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$component =& JComponentHelper::getComponent( 'com_akeeba' );
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$params = new JParameter($component->params);
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jimport('joomla.utilities.date');
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$date = new JDate();
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$params->set('updateini', json_encode($inidata) );
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$params->set('lastupdatecheck', $date->toUnix(false));
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$db =& JFactory::getDBO();
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$data = $params->toString();
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jimport('joomla.filesystem.file');
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if( AKEEBA_JVERSION == '16' )
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{
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// Joomla! 1.6
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$sql = 'UPDATE `#__extensions` SET `params` = '.$db->Quote($data).' WHERE '.
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"`element` = 'com_akeeba' AND `type` = 'component'";
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}
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else
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{
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// Joomla! 1.5
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$sql = 'UPDATE `#__components` SET `params` = '.$db->Quote($data).' WHERE '.
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"`option` = 'com_akeeba' AND `parent` = 0 AND `menuid` = 0";
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}
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$db->setQuery($sql);
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$db->query();
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}
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/**
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* Is the Live Update supported on this server?
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* @return bool
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*/
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public function isLiveUpdateSupported()
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{
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return $this->hasURLfopen() || $this->hascURL();
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}
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/**
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* Searches for updates and returns an object containing update information
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* @return JObject An object with members: supported, update_available,
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* current_version, current_date, latest_version, latest_date,
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* package_url
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*/
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public function &getUpdates($force = false)
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{
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jimport('joomla.utilities.date');
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$ret = new JObject();
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if(!$this->isLiveUpdateSupported())
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{
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$ret->supported = false;
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$ret->update_available = false;
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return $ret;
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}
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else
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{
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$ret->supported = true;
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$update = $this->getLatestVersion($force);
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// FIX 2.3: Fail gracefully if the update data couldn't be retrieved
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if(!is_object($update) || ($update === false))
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{
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$ret->supported = false;
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$ret->update_available = false;
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return $ret;
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}
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// Check if we need to upgrade, by release date
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jimport('joomla.utilities.date');
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AEPlatform::load_version_defines();
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$curdate = new JDate(AKEEBA_DATE);
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$curdate = $curdate->toUnix(false);
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$relobject = new JDate($update->reldate);
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$reldate = $relobject->toUnix(false);
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if( AKEEBA_JVERSION == '16' ) {
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$ret->latest_date = $relobject->format('%Y-%m-%d');
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} else {
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$ret->latest_date = $relobject->toFormat('%Y-%m-%d');
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}
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$version = AKEEBA_VERSION;
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if( preg_match('#^[0-9\.]*a[0-9\.]*#', $version) == 1 )
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{
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$status = 'alpha';
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} elseif( preg_match('#^[0-9\.]*b[0-9\.]*#', $version) == 1 )
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{
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$status = 'beta';
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} elseif( preg_match('#^[0-9\.]*$#', $version) == 1 )
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{
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$status = 'stable';
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} else {
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$status = 'svn';
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}
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$ret->update_available = ($reldate > $curdate);
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$ret->current_version = AKEEBA_VERSION;
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$ret->current_date = AKEEBA_DATE;
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$ret->current_status = $status;
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$ret->latest_version = $update->version;
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$ret->status = $update->status;
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$ret->package_url = $update->url;
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$ret->package_url_suffix = $update->urlsuffix;
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return $ret;
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}
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}
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function downloadPackage($url, $target)
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{
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JLoader::import('helpers.download', JPATH_COMPONENT_ADMINISTRATOR);
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$result = AkeebaHelperDownload::download($url, $target);
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if($result) {
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return basename($target);
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} else {
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return false;
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}
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}
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}
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