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XML.php
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XML.php
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<?php
/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */
/**
* A framework for authentication and authorization in PHP applications
*
* LiveUser is an authentication/permission framework designed
* to be flexible and easily extendable.
*
* Since it is impossible to have a
* "one size fits all" it takes a container
* approach which should enable it to
* be versatile enough to meet most needs.
*
* PHP version 4 and 5
*
* LICENSE: This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*
*
* @category authentication
* @package LiveUser
* @author Markus Wolff <wolff@21st.de>
* @author Helgi Þormar Þorbjörnsson <dufuz@php.net>
* @author Lukas Smith <smith@pooteeweet.org>
* @author Arnaud Limbourg <arnaud@php.net>
* @author Pierre-Alain Joye <pajoye@php.net>
* @author Bjoern Kraus <krausbn@php.net>
* @copyright 2002-2006 Markus Wolff
* @license http://www.gnu.org/licenses/lgpl.txt
* @version CVS: $Id$
* @link http://pear.php.net/LiveUser
*/
/**
* Require parent class definition.
*/
require_once 'LiveUser/Perm/Storage.php';
require_once 'XML/Tree.php';
/**
* XML container for permission handling
*
* This is a XML backend driver for the LiveUser class.
*
* Requirements:
* - File "Liveuser.php" (contains the parent class "LiveUser")
* - XML_Parser
*
* @category authentication
* @package LiveUser
* @author Lukas Smith <smith@pooteeweet.org>
* @author Bjoern Kraus <krausbn@php.net>
* @copyright 2002-2006 Markus Wolff
* @license http://www.gnu.org/licenses/lgpl.txt
* @version Release: @package_version@
* @link http://pear.php.net/LiveUser
*/
class LiveUser_Perm_Storage_XML extends LiveUser_Perm_Storage
{
/**
* XML file in which the auth data is stored.
*
* @var string
* @access private
*/
var $file = '';
/**
* XML::Tree object.
*
* @var XML_Tree
* @access private
*/
var $tree = null;
/**
* XML::Tree object of the user logged in.
*
* @var XML_Tree
*
* @access private
* @see readUserData()
*/
var $userObj = null;
/**
* Initialize the storage container
*
* @param array Array with the storage configuration
* @return bool true on success, false on failure.
*
* @access public
*/
function init(&$storageConf)
{
parent::init($storageConf);
if (!is_file($this->file)) {
if (!is_file(getenv('DOCUMENT_ROOT') . $this->file)) {
$this->stack->push(LIVEUSER_ERROR_MISSING_DEPS, 'exception', array(),
"Perm initialisation failed. Can't find xml file.");
return false;
}
$this->file = getenv('DOCUMENT_ROOT') . $this->file;
}
$tree = new XML_Tree($this->file);
$err =& $tree->getTreeFromFile();
if (PEAR::isError($err)) {
$this->stack->push(LIVEUSER_ERROR, 'exception', array(),
"Perm initialisation failed. Can't get tree from file");
return false;
}
$this->tree =& $tree;
if (!is_a($this->tree, 'xml_tree')) {
$this->stack->push(LIVEUSER_ERROR_INIT_ERROR, 'error',
array('container' => 'storage layer configuration missing'));
return false;
}
return true;
}
/**
* map an auth user to a perm user
*
* @param int $auth_user_id
* @param string $containerName
* @return array requested data or false on failure
*
* @access public
*/
function mapUser($auth_user_id, $containerName)
{
$nodeIndex = 0;
$userIndex = 0;
if (isset($this->tree->root->children) && is_array($this->tree->root->children)) {
foreach ($this->tree->root->children as $node) {
if ($node->name == 'users') {
foreach ($node->children as $user) {
if ($user->name == 'user'
&& $auth_user_id == $user->attributes['authUserId']
&& $containerName == $user->attributes['authContainerName']
) {
$result['perm_user_id'] = $user->attributes['userId'];
$result['perm_type'] = $user->attributes['type'];
$this->userObj =& $this->tree->root->getElement(array($nodeIndex, $userIndex));
return $result;
}
$userIndex++;
}
}
$nodeIndex++;
}
}
return false;
}
/**
* Reads all rights of current user into a
* two-dimensional associative array, having the
* area names as the key of the 1st dimension.
* Group rights and invididual rights are being merged
* in the process.
*
* @param int perm user id
* @return array requested data or false on failure
*
* @access public
*/
function readUserRights($perm_user_id)
{
$result = array();
foreach ($this->userObj->children as $node) {
if ($node->name == 'rights') {
$tmp = explode(',', $node->content);
foreach ($tmp as $value) {
$level = LIVEUSER_MAX_LEVEL;
// level syntax: 10(2) => right id 10 at level 2
$match = array();
if (preg_match('/(\d+)\((\d+)\)/', $value, $match)) {
$value = $match[1];
$level = $match[2];
}
$result[$value] = $level;
}
}
}
return $result;
}
/**
* properly disconnect from resources
*
* @return bool true on success and false on failure
*
* @access public
*/
function disconnect()
{
$this->tree = null;
$this->userObj = null;
return true;
}
}
?>