/usr/share/php/Horde/Kolab/Server/Schema/Decorator/Cache.php is in php-horde-kolab-server 2.0.5-1ubuntu1.
This file is owned by root:root, with mode 0o644.
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/**
* This class handles the db schema.
*
* PHP version 5
*
* @category Kolab
* @package Kolab_Server
* @author Gunnar Wrobel <wrobel@pardus.de>
* @license http://www.horde.org/licenses/lgpl21 LGPL 2.1
* @link http://pear.horde.org/index.php?package=Kolab_Server
*/
/**
* This class handles the db schema.
*
* Copyright 2008-2016 Horde LLC (http://www.horde.org/)
*
* See the enclosed file COPYING for license information (LGPL). If you
* did not receive this file, see http://www.horde.org/licenses/lgpl21.
*
* @category Kolab
* @package Kolab_Server
* @author Gunnar Wrobel <wrobel@pardus.de>
* @license http://www.horde.org/licenses/lgpl21 LGPL 2.1
* @link http://pear.horde.org/index.php?package=Kolab_Server
*/
class Horde_Kolab_Server_Schema_Decorator_Cache
implements Horde_Kolab_Server_Schema_Interface
{
/** Maximum accepted level for the object class hierarchy */
const MAX_HIERARCHY = 100;
/**
* A cache for object attribute definitions.
*
* @var array
*/
protected $attributes;
/**
* A link to the composite server handler.
*
* @var Horde_Kolab_Server_Composite
*/
protected $composite;
/**
* Set the composite server reference for this object.
*
* @param Horde_Kolab_Server_Composite $composite A link to the composite
* server handler.
*
* @return NULL
*/
public function setComposite(
Horde_Kolab_Server_Composite $composite
) {
$this->composite = $composite;
}
/**
* Return the schema for the given objectClass.
*
* @param string $objectclass Fetch the schema for this objectClass.
*
* @return array The schema for the given objectClass.
*
* @throws Horde_Kolab_Server_Exception If retrieval of the schema failed.
*/
public function getObjectclassSchema($objectclass)
{
if (!empty($this->_config['schema_support'])) {
$schema = $this->_getSchema();
$info = $schema->get('objectclass', $objectclass);
$this->_handleError($info, Horde_Kolab_Server_Exception::SYSTEM);
return $info;
}
return parent::getObjectclassSchema($objectclass);
}
/**
* Return the schema for the given attribute.
*
* @param string $attribute Fetch the schema for this attribute.
*
* @return array The schema for the given attribute.
*
* @throws Horde_Kolab_Server_Exception If retrieval of the schema failed.
*/
public function getAttributeSchema($attribute)
{
if (!empty($this->_config['schema_support'])) {
$schema = $this->_getSchema();
$info = $schema->get('attribute', $attribute);
$this->_handleError($info, Horde_Kolab_Server_Exception::SYSTEM);
return $info;
}
return parent::getAttributeSchema($attribute);
}
/**
* Return the attributes supported by the given object class.
*
* @param string $class Determine the attributes for this class.
*
* @return array The supported attributes.
*
* @throws Horde_Kolab_Server_Exception If the schema analysis fails.
*/
public function getExternalAttributes($class)
{
if (!isset($this->attributes)) {
if (isset($this->cache)) {
register_shutdown_function(array($this, 'shutdown'));
}
}
if (empty($this->attributes[$class])) {
if (isset($this->cache)) {
$this->attributes[$class] = @unserialize($cache->get('attributes_' . $class,
$this->params['cache_lifetime']));
}
if (empty($this->attributes[$class])) {
$childclass = $class;
$classes = array();
$level = 0;
while ($childclass != 'Horde_Kolab_Server_Object'
&& $level < self::MAX_HIERARCHY) {
$classes[] = $childclass;
$childclass = get_parent_class($childclass);
$level++;
}
/** Finally add the basic object class */
$classes[] = $childclass;
if ($level == self::MAX_HIERARCHY) {
if (isset($this->logger)) {
$logger->err(sprintf('The maximal level of the object hierarchy has been exceeded for class \"%s\"!',
$class));
}
}
/**
* Collect attributes from bottom to top.
*/
$classes = array_reverse($classes);
$types = array('defined', 'required', 'derived', 'collapsed',
'defaults', 'locked', 'object_classes');
foreach ($types as $type) {
$$type = array();
}
foreach ($classes as $childclass) {
$vars = get_class_vars($childclass);
if (isset($vars['init_attributes'])) {
foreach ($types as $type) {
/**
* If the user wishes to adhere to the schema
* information from the server we will skip the
* attributes defined within the object class here.
*/
if (!empty($this->params['schema_override'])
&& in_array($type, 'defined', 'required')) {
continue;
}
if (isset($vars['init_attributes'][$type])) {
$$type = array_merge($$type,
$vars['init_attributes'][$type]);
}
}
}
}
$attrs = array();
foreach ($object_classes as $object_class) {
$info = $this->getObjectclassSchema($object_class);
if (isset($info['may'])) {
$defined = array_merge($defined, $info['may']);
}
if (isset($info['must'])) {
$defined = array_merge($defined, $info['must']);
$required = array_merge($required, $info['must']);
}
foreach ($defined as $attribute) {
try {
$attrs[$attribute] = $this->getAttributeSchema($attribute);
} catch (Horde_Kolab_Server_Exception $e) {
/**
* If the server considers the attribute to be
* invalid we mark it.
*/
$attrs[$attribute] = array('invalid' => true);
}
}
foreach ($required as $attribute) {
$attrs[$attribute]['required'] = true;
}
foreach ($locked as $attribute) {
$attrs[$attribute]['locked'] = true;
}
foreach ($defaults as $attribute => $default) {
$attrs[$attribute]['default'] = $default;
}
$attrs[Horde_Kolab_Server_Object::ATTRIBUTE_OC]['default'] = $object_classes;
}
foreach ($derived as $key => $attributes) {
$supported = true;
if (isset($attributes['base'])) {
foreach ($attributes['base'] as $attribute) {
/**
* Usually derived attribute are determined on basis
* of one or more attributes. If any of these is not
* supported the derived attribute should not be
* included into the set of supported attributes.
*/
if (!isset($attrs[$attribute])) {
unset($derived[$attribute]);
$supported = false;
break;
}
}
}
if ($supported) {
$attrs[$key] = $attributes;
}
}
$check_collapsed = $collapsed;
foreach ($check_collapsed as $key => $attributes) {
if (isset($attributes['base'])) {
foreach ($attributes['base'] as $attribute) {
/**
* Usually collapsed attribute are determined on basis
* of one or more attributes. If any of these is not
* supported the collapsed attribute should not be
* included into the set of supported attributes.
*/
if (!isset($attrs[$attribute])) {
unset($collapsed[$attribute]);
}
}
}
}
$this->attributes[$class] = array($attrs,
array(
'derived' => array_keys($derived),
'collapsed' => $collapsed,
'locked' => $locked,
'required' => $required));
}
}
return $this->attributes[$class];
}
public function getInternalAttributes($class)
{
}
/**
* Stores the attribute definitions in the cache.
*/
public function shutdown()
{
if (isset($this->attributes)) {
if (isset($this->cache)) {
foreach ($this->attributes as $key => $value) {
try {
$this->cache->set('attributes_' . $key, @serialize($value));
} catch (Exception $e) {
}
}
}
}
}
}
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