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egroupware_official/resources/inc/class.bo_acl.inc.php

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<?php
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/**
* EGroupWare - resources
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*
* @license http://www.gnu.org/licenses/gpl.html GNU General Public License
* @package resources
* @link http://www.egroupware.org
* @version $Id$
*/
/**
* ACL business object for resources
*
* Category rights and admins get inherited from parent categories.
* Current rights and the ones inherited from parents get ORed together,
* while for admins the "closest" cat-admin will be used.
*/
class bo_acl
{
var $acl;
var $start = 0;
var $query = '';
var $sort = '';
var $total = 0;
var $cats;
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var $debug;
var $use_session = False;
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/**
* Instance of categories class for resources
*
* @var categories
*/
var $egw_cats;
/**
* Constructor
*
* @param boolean $session
*/
function __construct($session=False)
{
define('EGW_ACL_CAT_ADMIN',64);
define('EGW_ACL_DIRECT_BOOKING',128);
define('EGW_ACL_CALREAD',256);
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$this->egw_cats = new categories('','resources');
$this->debug = False;
//all this is only needed when called from uiacl.
if($session)
{
$this->read_sessiondata();
$this->use_session = True;
foreach(array('start','query','sort','order') as $var)
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{
if (isset($_POST[$var]))
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{
$this->$var = $_POST[$var];
}
elseif (isset($_GET[$var]))
{
$this->$var = $_GET[$var];
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}
}
$this->save_sessiondata();
$this->cats = $this->egw_cats->return_sorted_array(0,false,'','','',true);
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}
}
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/**
* PHP4 constructor
*
* @param boolean $session
* @deprecated use __construct()
* @return bo_acl
*/
function bo_acl($session=False)
{
self::__construct($session);
}
/**
* get list of cats where current user has given rights
*
* @author Cornelius Weiss <egw@von-und-zu-weiss.de>
* @param int $perm_type one of EGW_ACL_READ, EGW_ACL_ADD, EGW_ACL_EDIT, EGW_ACL_DELETE, EGW_ACL_DIRECT_BOOKING
* @param int $parent_id=0 cat_id of parent to return only children of that category
* @return array cat_id => cat_name
* TODO mark subcats and so on!
*/
function get_cats($perm_type,$parent_id=0)
{
$cats = $this->egw_cats->return_sorted_array(0,false,'','','',true,$parent_id);
#_debug_array($cats);
if (!is_array($cats)) $cats = array();
foreach($cats as $key=>$cat) {
#echo "key:$key"._debug_array($value)."<br>";
#_debug_array($cat)."hier<br>";
if($this->is_permitted($cat['id'],$perm_type))
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{
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$s = str_repeat('&nbsp; ',$cat['level']) . stripslashes($cat['name']);
if ($cat['app_name'] == 'phpgw' || $cat['owner'] == '-1')
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{
$s .= ' &#9830;';
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}
$perm_cats[$cat['id']] = $s;
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}
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}
return isset($perm_cats)?$perm_cats:array();
}
/**
* gets name of category
*
* @author Lukas Weiss <wnz.gh05t@users.sourceforge.net>
* @param int $cat_id
* @return mixed name of category
*/
static public function get_cat_name($cat_id)
{
return $GLOBALS['egw']->categories->id2name($cat_id);
}
/**
* gets userid of admin for given category
*
* @author Cornelius Weiss <egw@von-und-zu-weiss.de>
* @param int $cat_id
* @return int userid of cat admin
*/
static public function get_cat_admin($cat_id)
{
$cat_rights = self::get_rights($cat_id);
foreach ($cat_rights as $userid => $right)
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{
if ($right & EGW_ACL_CAT_ADMIN)
{
return $userid;
}
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}
// check for an inherited cat admin
if (($parent = $GLOBALS['egw']->categories->id2name($cat_id,'parent')))
{
return self::get_cat_admin($parent);
}
return lang('none');
}
/**
* Permissions including inherited ones
*
* @var array cat_id => rights
*/
static private $permissions;
static private $resource_acl;
/**
* Get permissions of current user on a given category
*
* @param int $cat_id
* @return int
*/
static public function get_permissions($cat_id)
{
if (!isset(self::$permissions[$cat_id]))
{
if (is_null(self::$resource_acl))
{
self::$resource_acl = $GLOBALS['egw']->acl->get_all_location_rights($GLOBALS['egw_info']['user']['account_id'],'resources',true);
}
self::$permissions[$cat_id] = (int)self::$resource_acl['L'.$cat_id];
if (($parent = $GLOBALS['egw']->categories->id2name($cat_id,'parent')))
{
self::$permissions[$cat_id] |= self::get_permissions($parent);
}
}
//echo "<p>".__METHOD__."($cat_id) = ".self::$permissions[$cat_id]."</p>\n";
return self::$permissions[$cat_id];
}
/**
* checks one of the following rights for current user:
*
* EGW_ACL_READ, EGW_ACL_ADD, EGW_ACL_EDIT, EGW_ACL_DELETE, EGW_ACL_DIRECT_BOOKING
*
* @param int $cat_id
* @param int $right
* @return boolean user is permitted or not for right
*/
static public function is_permitted($cat_id,$right)
{
if (!isset(self::$permissions[$cat_id]))
{
self::get_permissions($cat_id);
}
//echo "<p>".__METHOD__."($cat_id,$right) = ".self::$permissions[$cat_id]." & $right = ".(self::$permissions[$cat_id] & $right)."</p>\n";
return (boolean) (self::$permissions[$cat_id] & $right);
}
/**
* gets all rights from all user for given cat
*
* @param int $cat_id
* @return array userid => right
*/
static public function get_rights($cat_id)
{
return $GLOBALS['egw']->acl->get_all_rights('L'.$cat_id,'resources');
}
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// privat functions from here on -------------------------------------------------------------------------
function save_sessiondata()
{
$data = array(
'start' => $this->start,
'query' => $this->query,
'sort' => $this->sort,
'order' => $this->order,
'limit' => $this->limit,
);
if($this->debug) { echo '<br>Read:'; _debug_array($data); }
$GLOBALS['egw']->session->appsession('session_data','resources_acl',$data);
}
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function read_sessiondata()
{
$data = $GLOBALS['egw']->session->appsession('session_data','resources_acl');
if($this->debug) { echo '<br>Read:'; _debug_array($data); }
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$this->start = $data['start'];
$this->query = $data['query'];
$this->sort = $data['sort'];
$this->order = $data['order'];
$this->limit = $data['limit'];
}
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function set_rights($cat_id,$read,$write,$calread,$calbook,$admin)
{
// Clear cache
unset(self::$permissions[$cat_id]);
$readcat = $read ? $read : array();
$writecat = $write ? $write : array();
$calreadcat = $calread ? $calread : array();
$calbookcat = $calbook ? $calbook : array();
$admincat = $admin ? $admin : array();
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$GLOBALS['egw']->acl->delete_repository('resources','L' . $cat_id,false);
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foreach($GLOBALS['egw']->accounts->get_list() as $num => $account)
{
$account_id = $account['account_id'];
$rights = false;
$rights = in_array($account_id,$readcat) ? ($rights | EGW_ACL_READ) : false;
$rights = in_array($account_id,$writecat) ? ($rights | EGW_ACL_READ | EGW_ACL_ADD | EGW_ACL_EDIT | EGW_ACL_DELETE): $rights;
$rights = in_array($account_id,$calreadcat) ? ($rights | EGW_ACL_CALREAD) : $rights;
$rights = in_array($account_id,$calbookcat) ? ($rights | EGW_ACL_DIRECT_BOOKING | EGW_ACL_CALREAD) : $rights;
$rights = in_array($account_id,$admincat) ? ($rights = 511) : $rights;
if ($rights)
{
$GLOBALS['egw']->acl->add_repository('resources','L'.$cat_id,$account_id,$rights);
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}
}
}
}