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<?php
/**
* @package Joomla.Platform
* @subpackage Updater
*
* @copyright Copyright (C) 2005 - 2013 Open Source Matters, Inc. All rights reserved.
* @license GNU General Public License version 2 or later; see LICENSE
*/
defined('JPATH_PLATFORM') or die;
jimport('joomla.updater.updateadapter');
/**
* Collection Update Adapter Class
*
* @package Joomla.Platform
* @subpackage Updater
* @since 11.1
* */
class JUpdaterCollection extends JUpdateAdapter
{
/**
* Root of the tree
*
* @var object
* @since 11.1
*/
protected $base;
/**
* Tree of objects
*
* @var array
* @since 11.1
*/
protected $parent = array(0);
/**
* Used to control if an item has a child or not
*
* @var boolean
* @since 11.1
*/
protected $pop_parent = 0;
/**
* @var array A list of discovered update sites
*/
protected $update_sites;
/**
* A list of discovered updates
*
* @var array
*/
protected $updates;
/**
* Gets the reference to the current direct parent
*
* @return object
*
* @since 11.1
*/
protected function _getStackLocation()
{
return implode('->', $this->_stack);
}
/**
* Get the parent tag
*
* @return string parent
*
* @since 11.1
*/
protected function _getParent()
{
return end($this->parent);
}
/**
* Opening an XML element
*
* @param object $parser Parser object
* @param string $name Name of element that is opened
* @param array $attrs Array of attributes for the element
*
* @return void
*
* @since 11.1
*/
public function _startElement($parser, $name, $attrs = array())
{
array_push($this->_stack, $name);
$tag = $this->_getStackLocation();
// Reset the data
eval('$this->' . $tag . '->_data = "";');
switch ($name)
{
case 'CATEGORY':
if (isset($attrs['REF']))
{
$this->update_sites[] = array('type' => 'collection', 'location' => $attrs['REF'], 'update_site_id' => $this->_update_site_id);
}
else
{
// This item will have children, so prepare to attach them
$this->pop_parent = 1;
}
break;
case 'EXTENSION':
$update = JTable::getInstance('update');
$update->set('update_site_id', $this->_update_site_id);
foreach ($this->_updatecols as $col)
{
// Reset the values if it doesn't exist
if (!array_key_exists($col, $attrs))
{
$attrs[$col] = '';
if ($col == 'CLIENT')
{
$attrs[$col] = 'site';
}
}
}
$client = JApplicationHelper::getClientInfo($attrs['CLIENT'], 1);
$attrs['CLIENT_ID'] = $client->id;
// Lower case all of the fields
foreach ($attrs as $key => $attr)
{
$values[strtolower($key)] = $attr;
}
// Only add the update if it is on the same platform and release as we are
$ver = new JVersion;
$product = strtolower(JFilterInput::getInstance()->clean($ver->PRODUCT, 'cmd')); // lower case and remove the exclamation mark
// Set defaults, the extension file should clarify in case but it may be only available in one version
// This allows an update site to specify a targetplatform
// targetplatformversion can be a regexp, so 1.[56] would be valid for an extension that supports 1.5 and 1.6
// Note: Whilst the version is a regexp here, the targetplatform is not (new extension per platform)
// Additionally, the version is a regexp here and it may also be in an extension file if the extension is
// compatible against multiple versions of the same platform (e.g. a library)
if (!isset($values['targetplatform']))
{
$values['targetplatform'] = $product;
}
// set this to ourself as a default
if (!isset($values['targetplatformversion']))
{
$values['targetplatformversion'] = $ver->RELEASE;
}
// set this to ourself as a default
// validate that we can install the extension
if ($product == $values['targetplatform'] && preg_match('/' . $values['targetplatformversion'] . '/', $ver->RELEASE))
{
$update->bind($values);
$this->updates[] = $update;
}
break;
}
}
/**
* Closing an XML element
* Note: This is a protected function though has to be exposed externally as a callback
*
* @param object $parser Parser object
* @param string $name Name of the element closing
*
* @return void
*
* @since 11.1
*/
protected function _endElement($parser, $name)
{
$lastcell = array_pop($this->_stack);
switch ($name)
{
case 'CATEGORY':
if ($this->pop_parent)
{
$this->pop_parent = 0;
array_pop($this->parent);
}
break;
}
}
// Note: we don't care about char data in collection because there should be none
/**
* Finds an update
*
* @param array $options Options to use: update_site_id: the unique ID of the update site to look at
*
* @return array Update_sites and updates discovered
*
* @since 11.1
*/
public function findUpdate($options)
{
$url = $options['location'];
$this->_update_site_id = $options['update_site_id'];
if (substr($url, -4) != '.xml')
{
if (substr($url, -1) != '/')
{
$url .= '/';
}
$url .= 'update.xml';
}
$this->base = new stdClass;
$this->update_sites = array();
$this->updates = array();
$dbo = $this->parent->getDBO();
if (!($fp = @fopen($url, "r")))
{
$query = $dbo->getQuery(true);
$query->update('#__update_sites');
$query->set('enabled = 0');
$query->where('update_site_id = ' . $this->_update_site_id);
$dbo->setQuery($query);
$dbo->execute();
JLog::add("Error parsing url: " . $url, JLog::WARNING, 'updater');
$app = JFactory::getApplication();
$app->enqueueMessage(JText::sprintf('JLIB_UPDATER_ERROR_COLLECTION_OPEN_URL', $url), 'warning');
return false;
}
$this->xml_parser = xml_parser_create('');
xml_set_object($this->xml_parser, $this);
xml_set_element_handler($this->xml_parser, '_startElement', '_endElement');
while ($data = fread($fp, 8192))
{
if (!xml_parse($this->xml_parser, $data, feof($fp)))
{
JLog::add("Error parsing url: " . $url, JLog::WARNING, 'updater');
$app = JFactory::getApplication();
$app->enqueueMessage(JText::sprintf('JLIB_UPDATER_ERROR_COLLECTION_PARSE_URL', $url), 'warning');
return false;
}
}
// TODO: Decrement the bad counter if non-zero
return array('update_sites' => $this->update_sites, 'updates' => $this->updates);
}
}