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<?php
/**
* Copyright 2011-2017 Horde LLC (http://www.horde.org/)
*
* See the enclosed file LICENSE for license information (LGPL). If you
* did not receive this file, see http://www.horde.org/licenses/lgpl21.
*
* @category Horde
* @copyright 2011-2017 Horde LLC
* @license http://www.horde.org/licenses/lgpl21 LGPL 2.1
* @package Imap_Client
*/
/**
* Available ACL rights for a mailbox/identifier (see RFC 2086/4314).
*
* @author Michael Slusarz <slusarz@horde.org>
* @category Horde
* @copyright 2011-2017 Horde LLC
* @license http://www.horde.org/licenses/lgpl21 LGPL 2.1
* @package Imap_Client
*/
class Horde_Imap_Client_Data_AclRights extends Horde_Imap_Client_Data_AclCommon implements ArrayAccess, Iterator, Serializable
{
/**
* ACL optional rights.
*
* @var array
*/
protected $_optional = array();
/**
* ACL required rights.
*
* @var array
*/
protected $_required = array();
/**
* Constructor.
*
* @param array $required The required rights (see RFC 4314 [2.1]).
* @param array $optional The optional rights (see RFC 4314 [2.1]).
*/
public function __construct(array $required = array(),
array $optional = array())
{
$this->_required = $required;
foreach ($optional as $val) {
foreach (str_split($val) as $right) {
$this->_optional[$right] = $val;
}
}
$this->_normalize();
}
/**
* String representation of the ACL.
*
* @return string String representation (RFC 4314 compliant).
*
*/
public function __toString()
{
return implode('', array_keys(array_flip(array_merge(array_values($this->_required), array_keys($this->_optional)))));
}
/**
* Normalize virtual rights (see RFC 4314 [2.1.1]).
*/
protected function _normalize()
{
/* Clients conforming to RFC 4314 MUST ignore the virtual ACL_CREATE
* and ACL_DELETE rights. See RFC 4314 [2.1]. However, we still need
* to handle these rights when dealing with RFC 2086 servers since
* we are abstracting out use of ACL_CREATE/ACL_DELETE to their
* component RFC 4314 rights. */
foreach ($this->_virtual as $key => $val) {
if (isset($this->_optional[$key])) {
unset($this->_optional[$key]);
foreach ($val as $val2) {
$this->_optional[$val2] = implode('', $val);
}
} elseif (($pos = array_search($key, $this->_required)) !== false) {
unset($this->_required[$pos]);
$this->_required = array_unique(array_merge($this->_required, $val));
}
}
}
/* ArrayAccess methods. */
/**
*/
public function offsetExists($offset)
{
return (bool)$this[$offset];
}
/**
*/
public function offsetGet($offset)
{
if (isset($this->_optional[$offset])) {
return $this->_optional[$offset];
}
$pos = array_search($offset, $this->_required);
return ($pos === false)
? null
: $this->_required[$pos];
}
/**
*/
public function offsetSet($offset, $value)
{
$this->_optional[$offset] = $value;
$this->_normalize();
}
/**
*/
public function offsetUnset($offset)
{
unset($this->_optional[$offset]);
$this->_required = array_values(array_diff($this->_required, array($offset)));
if (isset($this->_virtual[$offset])) {
foreach ($this->_virtual[$offset] as $val) {
unset($this[$val]);
}
}
}
/* Iterator methods. */
/**
*/
public function current()
{
$val = current($this->_required);
return is_null($val)
? current($this->_optional)
: $val;
}
/**
*/
public function key()
{
$key = key($this->_required);
return is_null($key)
? key($this->_optional)
: $key;
}
/**
*/
public function next()
{
if (key($this->_required) === null) {
next($this->_optional);
} else {
next($this->_required);
}
}
/**
*/
public function rewind()
{
reset($this->_required);
reset($this->_optional);
}
/**
*/
public function valid()
{
return ((key($this->_required) !== null) ||
(key($this->_optional) !== null));
}
/* Serializable methods. */
/**
*/
public function serialize()
{
return json_encode(array(
$this->_required,
$this->_optional
));
}
/**
*/
public function unserialize($data)
{
list($this->_required, $this->_optional) = json_decode($data);
}
}