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enabled = $strict ? false : true;
$result->params = new JRegistry;
}
}
else
{
$result = static::$components[$option];
}
return $result;
}
/**
* Checks if the component is enabled
*
* @param string $option The component option.
*
* @return boolean
*
* @since 1.5
*/
public static function isEnabled($option)
{
$result = static::getComponent($option, true);
return $result->enabled;
}
/**
* Gets the parameter object for the component
*
* @param string $option The option for the component.
* @param boolean $strict If set and the component does not exist, false will be returned
*
* @return JRegistry A JRegistry object.
*
* @see JRegistry
* @since 1.5
*/
public static function getParams($option, $strict = false)
{
$component = static::getComponent($option, $strict);
return $component->params;
}
/**
* Applies the global text filters to arbitrary text as per settings for current user groups
*
* @param string $text The string to filter
*
* @return string The filtered string
*
* @since 2.5
*/
public static function filterText($text)
{
// Filter settings
$config = static::getParams('com_config');
$user = JFactory::getUser();
$userGroups = JAccess::getGroupsByUser($user->get('id'));
$filters = $config->get('filters');
$blackListTags = array();
$blackListAttributes = array();
$customListTags = array();
$customListAttributes = array();
$whiteListTags = array();
$whiteListAttributes = array();
$whiteList = false;
$blackList = false;
$customList = false;
$unfiltered = false;
// Cycle through each of the user groups the user is in.
// Remember they are included in the Public group as well.
foreach ($userGroups as $groupId)
{
// May have added a group by not saved the filters.
if (!isset($filters->$groupId))
{
continue;
}
// Each group the user is in could have different filtering properties.
$filterData = $filters->$groupId;
$filterType = strtoupper($filterData->filter_type);
if ($filterType == 'NH')
{
// Maximum HTML filtering.
}
elseif ($filterType == 'NONE')
{
// No HTML filtering.
$unfiltered = true;
}
else
{
// Black or white list.
// Preprocess the tags and attributes.
$tags = explode(',', $filterData->filter_tags);
$attributes = explode(',', $filterData->filter_attributes);
$tempTags = array();
$tempAttributes = array();
foreach ($tags as $tag)
{
$tag = trim($tag);
if ($tag)
{
$tempTags[] = $tag;
}
}
foreach ($attributes as $attribute)
{
$attribute = trim($attribute);
if ($attribute)
{
$tempAttributes[] = $attribute;
}
}
// Collect the black or white list tags and attributes.
// Each list is cummulative.
if ($filterType == 'BL')
{
$blackList = true;
$blackListTags = array_merge($blackListTags, $tempTags);
$blackListAttributes = array_merge($blackListAttributes, $tempAttributes);
}
elseif ($filterType == 'CBL')
{
// Only set to true if Tags or Attributes were added
if ($tempTags || $tempAttributes)
{
$customList = true;
$customListTags = array_merge($customListTags, $tempTags);
$customListAttributes = array_merge($customListAttributes, $tempAttributes);
}
}
elseif ($filterType == 'WL')
{
$whiteList = true;
$whiteListTags = array_merge($whiteListTags, $tempTags);
$whiteListAttributes = array_merge($whiteListAttributes, $tempAttributes);
}
}
}
// Remove duplicates before processing (because the black list uses both sets of arrays).
$blackListTags = array_unique($blackListTags);
$blackListAttributes = array_unique($blackListAttributes);
$customListTags = array_unique($customListTags);
$customListAttributes = array_unique($customListAttributes);
$whiteListTags = array_unique($whiteListTags);
$whiteListAttributes = array_unique($whiteListAttributes);
// Unfiltered assumes first priority.
if ($unfiltered)
{
// Dont apply filtering.
}
else
{
// Custom blacklist precedes Default blacklist
if ($customList)
{
$filter = JFilterInput::getInstance(array(), array(), 1, 1);
// Override filter's default blacklist tags and attributes
if ($customListTags)
{
$filter->tagBlacklist = $customListTags;
}
if ($customListAttributes)
{
$filter->attrBlacklist = $customListAttributes;
}
}
// Black lists take second precedence.
elseif ($blackList)
{
// Remove the white-listed tags and attributes from the black-list.
$blackListTags = array_diff($blackListTags, $whiteListTags);
$blackListAttributes = array_diff($blackListAttributes, $whiteListAttributes);
$filter = JFilterInput::getInstance($blackListTags, $blackListAttributes, 1, 1);
// Remove white listed tags from filter's default blacklist
if ($whiteListTags)
{
$filter->tagBlacklist = array_diff($filter->tagBlacklist, $whiteListTags);
}
// Remove white listed attributes from filter's default blacklist
if ($whiteListAttributes)
{
$filter->attrBlacklist = array_diff($filter->attrBlacklist, $whiteListAttributes);
}
}
// White lists take third precedence.
elseif ($whiteList)
{
// Turn off XSS auto clean
$filter = JFilterInput::getInstance($whiteListTags, $whiteListAttributes, 0, 0, 0);
}
// No HTML takes last place.
else
{
$filter = JFilterInput::getInstance();
}
$text = $filter->clean($text, 'html');
}
return $text;
}
/**
* Render the component.
*
* @param string $option The component option.
* @param array $params The component parameters
*
* @return object
*
* @since 1.5
* @throws Exception
*/
public static function renderComponent($option, $params = array())
{
$app = JFactory::getApplication();
// Load template language files.
$template = $app->getTemplate(true)->template;
$lang = JFactory::getLanguage();
$lang->load('tpl_' . $template, JPATH_BASE, null, false, true)
|| $lang->load('tpl_' . $template, JPATH_THEMES . "/$template", null, false, true);
if (empty($option))
{
throw new Exception(JText::_('JLIB_APPLICATION_ERROR_COMPONENT_NOT_FOUND'), 404);
}
// Record the scope
$scope = $app->scope;
// Set scope to component name
$app->scope = $option;
// Build the component path.
$option = preg_replace('/[^A-Z0-9_\.-]/i', '', $option);
$file = substr($option, 4);
// Define component path.
define('JPATH_COMPONENT', JPATH_BASE . '/components/' . $option);
define('JPATH_COMPONENT_SITE', JPATH_SITE . '/components/' . $option);
define('JPATH_COMPONENT_ADMINISTRATOR', JPATH_ADMINISTRATOR . '/components/' . $option);
$path = JPATH_COMPONENT . '/' . $file . '.php';
// If component is disabled throw error
if (!static::isEnabled($option) || !file_exists($path))
{
throw new Exception(JText::_('JLIB_APPLICATION_ERROR_COMPONENT_NOT_FOUND'), 404);
}
// Load common and local language files.
$lang->load($option, JPATH_BASE, null, false, true) || $lang->load($option, JPATH_COMPONENT, null, false, true);
// Handle template preview outlining.
$contents = null;
// Execute the component.
$contents = static::executeComponent($path);
// Revert the scope
$app->scope = $scope;
return $contents;
}
/**
* Execute the component.
*
* @param string $path The component path.
*
* @return string The component output
*
* @since 1.7
*/
protected static function executeComponent($path)
{
ob_start();
require_once $path;
$contents = ob_get_clean();
return $contents;
}
/**
* Load the installed components into the components property.
*
* @param string $option The element value for the extension
*
* @return boolean True on success
*
* @since 1.5
* @deprecated 4.0 Use JComponentHelper::load() instead
*/
protected static function _load($option)
{
return static::load($option);
}
/**
* Load the installed components into the components property.
*
* @param string $option The element value for the extension
*
* @return boolean True on success
*
* @since 3.2
*/
protected static function load($option)
{
$db = JFactory::getDbo();
$query = $db->getQuery(true)
->select('extension_id AS id, element AS "option", params, enabled')
->from('#__extensions')
->where($db->quoteName('type') . ' = ' . $db->quote('component'))
->where($db->quoteName('element') . ' = ' . $db->quote($option));
$db->setQuery($query);
$cache = JFactory::getCache('_system', 'callback');
try
{
static::$components[$option] = $cache->get(array($db, 'loadObject'), null, $option, false);
}
catch (RuntimeException $e)
{
// Fatal error.
JLog::add(JText::sprintf('JLIB_APPLICATION_ERROR_COMPONENT_NOT_LOADING', $option, $e->getMessage()), JLog::WARNING, 'jerror');
return false;
}
if (empty(static::$components[$option]))
{
// Fatal error.
$error = JText::_('JLIB_APPLICATION_ERROR_COMPONENT_NOT_FOUND');
JLog::add(JText::sprintf('JLIB_APPLICATION_ERROR_COMPONENT_NOT_LOADING', $option, $error), JLog::WARNING, 'jerror');
return false;
}
// Convert the params to an object.
if (is_string(static::$components[$option]->params))
{
$temp = new JRegistry;
$temp->loadString(static::$components[$option]->params);
static::$components[$option]->params = $temp;
}
return true;
}
}