mirror of
https://github.com/EGroupware/egroupware.git
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739 lines
20 KiB
PHP
739 lines
20 KiB
PHP
<?php
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/**
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* eGroupWare API - Applications
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*
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* @link http://www.egroupware.org
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* @author Dan Kuykendall <seek3r@phpgroupware.org>
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* Copyright (C) 2000, 2001 Dan Kuykendall
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* @license http://opensource.org/licenses/lgpl-license.php LGPL - GNU Lesser General Public License
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* @package api
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* @subpackage accounts
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* @version $Id$
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*/
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/**
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* Access Control List System
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*
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* This class provides an ACL security scheme.
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* This can manage rights to 'run' applications, and limit certain features within an application.
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* It is also used for granting a user "membership" to a group, or making a user have the security equivilance of another user.
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* It is also used for granting a user or group rights to various records, such as todo or calendar items of another user.
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* $acl =& CreateObject('phpgwapi.acl',5); // 5 is the user id
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*/
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class acl
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{
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/**
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* @var int $account_id the account-id this class is instanciated for
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*/
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var $account_id = 0;
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/**
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* @var $account_type
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*/
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var $account_type;
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/**
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* @var array $data internal repository with acl rows for the given app and account-id (incl. memberships)
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*/
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var $data = Array();
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/**
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* internal copy of the db-object
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*
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* @var egw_db
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*/
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var $db;
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/**
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* @var string $table_name name of the acl_table
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*/
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const TABLE = 'egw_acl';
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/**
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* ACL constructor for setting account id
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*
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* Sets the ID for $acl->account_id. Can be used to change a current instances id as well.
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* Some functions are specific to this account, and others are generic.
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*
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* @example acl->acl(5); // 5 is the user id
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* @param int $account_id int-the user id
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*/
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function acl($account_id = '')
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{
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if (is_object($GLOBALS['egw_setup']->db))
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{
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$this->db = $GLOBALS['egw_setup']->db;
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}
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else
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{
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$this->db = $GLOBALS['egw']->db;
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}
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if ((int)$this->account_id != (int)$account_id)
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{
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$this->account_id = get_account_id((int)$account_id,@$GLOBALS['egw_info']['user']['account_id']);
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}
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}
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function DONTlist_methods($_type='xmlrpc')
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{
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/*
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This handles introspection or discovery by the logged in client,
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in which case the input might be an array. The server always calls
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this function to fill the server dispatch map using a string.
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*/
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if (is_array($_type))
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{
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$_type = $_type['type'] ? $_type['type'] : $_type[0];
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}
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switch($_type)
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{
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case 'xmlrpc':
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$xml_functions = array(
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'read_repository' => array(
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'function' => 'read_repository',
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'signature' => array(array(xmlrpcStruct)),
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'docstring' => lang('FIXME!')
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),
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'get_rights' => array(
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'function' => 'get_rights',
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'signature' => array(array(xmlrpcStruct,xmlrpcStruct)),
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'docstring' => lang('FIXME!')
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),
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'list_methods' => array(
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'function' => 'list_methods',
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'signature' => array(array(xmlrpcStruct,xmlrpcString)),
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'docstring' => lang('Read this list of methods.')
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)
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);
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return $xml_functions;
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break;
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case 'soap':
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return $this->soap_functions;
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break;
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default:
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return array();
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break;
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}
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}
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/**************************************************************************\
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* These are the standard $this->account_id specific functions *
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\**************************************************************************/
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/**
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* Read acl records for $acl->account_id from reposity
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*
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* @internal
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* @return array along with storing it in $acl->data. <br>
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*/
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function read_repository()
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{
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// For some reason, calling this via XML-RPC doesn't call the constructor.
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// Here is yet another work around(tm) (jengo)
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if (!$this->account_id)
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{
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$this->acl();
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}
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$acl_acc_list = $GLOBALS['egw']->accounts->memberships($this->account_id,true);
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@array_unshift($acl_acc_list,$this->account_id);
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$this->data = Array();
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foreach($this->db->select(acl::TABLE,'*',array('acl_account' => $acl_acc_list ),__LINE__,__FILE__) as $row)
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{
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$this->data[$row['acl_appname'].'-'.$row['acl_location'].'-'.$row['acl_account']] = egw_db::strip_array_keys($row,'acl_');
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}
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return $this->data;
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}
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/**
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* Read acl records from $acl->data
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*
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* @return array all ACL records from $this->data.
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*/
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function read()
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{
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if (!count($this->data))
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{
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$this->read_repository();
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}
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return $this->data;
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}
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/**
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* Adds ACL record to the repository of the class
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*
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* Adds ACL record to $this->data.
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*
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* @param string $appname default False derives value from $GLOBALS['egw_info']['flags']['currentapp']
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* @param string $location location
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* @param int $rights rights
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* @return array all ACL records from $this->data.
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*/
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function add($appname,$location,$rights)
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{
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if (!$appname) $appname = $GLOBALS['egw_info']['flags']['currentapp'];
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$row = array(
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'appname' => $appname,
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'location' => $location,
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'account' => (int) $this->account_id,
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'rights' => (int) $rights
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);
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$this->data[$row['appname'].'-'.$row['location'].'-'.$row['account']] = $row;
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return $this->data;
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}
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/**
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* Delete ACL record in the repository of the class
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*
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* @param string $appname appname or '' for $GLOBALS['egw_info']['flags']['currentapp']
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* @param string/boolean $location location or false for all locations
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* @return array all ACL records from $this->data.
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*/
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function delete($appname,$location)
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{
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if (!$appname) $appname = $GLOBALS['egw_info']['flags']['currentapp'];
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foreach($this->data as $idx => $value)
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{
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if ($value['appname'] == $appname &&
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($location === false || $value['location'] == $location) &&
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$value['account'] == $this->account_id)
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{
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unset($this->data[$idx]);
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}
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}
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return $this->data;
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}
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/**
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* save the internal repository or the class
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*
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* @return array all ACL records from $this->data.
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*/
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function save_repository()
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{
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$this->db->delete(acl::TABLE,array(
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'acl_account' => $this->account_id,
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),__LINE__,__FILE__);
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foreach($this->data as $value)
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{
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if ($value['account'] == $this->account_id)
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{
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$this->db->insert(acl::TABLE,array(
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'acl_appname' => $value['appname'],
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'acl_location' => $value['location'],
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'acl_account' => $this->account_id,
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'acl_rights' => $value['rights'],
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),false,__LINE__,__FILE__);
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}
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}
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if ($this->account_id == $GLOBALS['egw_info']['user']['account_id'] &&
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method_exists($GLOBALS['egw'],'invalidate_session_cache')) // egw object in setup is limited
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{
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$GLOBALS['egw']->invalidate_session_cache();
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}
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return $this->data;
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}
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/**************************************************************************\
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* These are the non-standard $this->account_id specific functions *
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\**************************************************************************/
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/**
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* get rights from the class repository (included rights of $this->account_id and all it's memberships)
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*
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* @param string $location app location to get rights from
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* @param string $appname optional defaults to $GLOBALS['egw_info']['flags']['currentapp'];
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* @return int all rights or'ed together
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*/
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function get_rights($location,$appname = '')
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{
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// For XML-RPC, change this once its working correctly for passing parameters (jengo)
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if (is_array($location))
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{
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$appname = $location['appname'];
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$location = $location['location'];
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}
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if (!count($this->data))
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{
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$this->read_repository();
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}
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if (!$appname) $appname = $GLOBALS['egw_info']['flags']['currentapp'];
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if (!count($this->data) && $GLOBALS['egw_info']['server']['acl_default'] != 'deny')
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{
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return True;
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}
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$rights = 0;
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foreach($this->data as $idx => $value)
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{
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if ($value['appname'] == $appname)
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{
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if ($value['location'] == $location || $value['location'] == 'everywhere')
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{
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if ($value['rights'] == 0)
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{
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return False;
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}
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$rights |= $value['rights'];
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}
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}
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}
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return $rights;
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}
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/**
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* check required rights agains the internal repository (included rights of $this->account_id and all it's memberships)
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*
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* @param $location app location
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* @param $required required right to check against
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* @param $appname optional defaults to currentapp
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* @return boolean
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*/
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function check($location, $required, $appname = False)
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{
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$rights = $this->get_rights($location,$appname);
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return !!($rights & $required);
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}
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/**
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* get specific rights for this->account_id for an app location
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*
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* @param string $location app location
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* @param string $appname='' optional defaults to currentapp
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* @param int $account_id=0 optional defaults to $this->account_id
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* @return int $rights
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*/
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function get_specific_rights($location, $appname = '')
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{
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if (!$appname) $appname = $GLOBALS['egw_info']['flags']['currentapp'];
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if (!count($this->data) && $GLOBALS['egw_info']['server']['acl_default'] != 'deny')
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{
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return True;
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}
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$rights = 0;
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foreach($this->data as $idx => $value)
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{
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if ($value['appname'] == $appname &&
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($value['location'] == $location || $value['location'] == 'everywhere') &&
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$value['account'] == $this->account_id)
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{
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if ($value['rights'] == 0)
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{
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return False;
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}
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$rights |= $value['rights'];
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}
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}
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return $rights;
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}
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/**
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* check specific rights
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*
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* @param string $location app location
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* @param int $required required rights
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* @param string $appname optional defaults to currentapp
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* @return boolean
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*/
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function check_specific($location, $required, $appname = '')
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{
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$rights = $this->get_specific_rights($location,$appname);
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return !!($rights & $required);
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}
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/**************************************************************************\
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* These are the generic functions. Not specific to $this->account_id *
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\**************************************************************************/
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/**
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* add repository information / rights for app/location/account_id to the database
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*
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* @param string $app appname
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* @param string $location location
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* @param int $account_id account id
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* @param int $rights rights
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* @return boolean allways true
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*/
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function add_repository($app, $location, $account_id, $rights)
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{
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//echo "<p>acl::add_repository('$app','$location',$account_id,$rights);</p>\n";
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$this->db->insert(acl::TABLE,array(
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'acl_rights' => $rights,
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),array(
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'acl_appname' => $app,
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'acl_location' => $location,
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'acl_account' => $account_id,
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),__LINE__,__FILE__);
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if ($account_id == $GLOBALS['egw_info']['user']['account_id'] &&
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method_exists($GLOBALS['egw'],'invalidate_session_cache')) // egw object in setup is limited
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{
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$GLOBALS['egw']->invalidate_session_cache();
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}
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return True;
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}
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/**
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* delete repository information / rights for app/location[/account_id] from the DB
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*
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* @param string $app appname
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* @param string $location location
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* @param int/boolean $account_id account id, default 0=$this->account_id, or false to delete all entries for $app/$location
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* @return int number of rows deleted
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*/
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function delete_repository($app, $location, $accountid='')
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{
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static $cache_accountid;
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$where = array(
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'acl_appname' => $app,
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'acl_location' => $location,
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);
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if ($accountid !== false)
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{
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if(isset($cache_accountid[$accountid]) && $cache_accountid[$accountid])
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{
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$where['acl_account'] = $cache_accountid[$accountid];
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}
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else
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{
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$where['acl_account'] = $cache_accountid[$accountid] = get_account_id($accountid,$this->account_id);
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}
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}
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if (method_exists($GLOBALS['egw'],'invalidate_session_cache')) // egw object in setup is limited
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{
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$GLOBALS['egw']->invalidate_session_cache();
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}
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if ($app == '%' || $app == '%%') unset($where['acl_appname']);
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$this->db->delete(acl::TABLE,$where,__LINE__,__FILE__);
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return $this->db->affected_rows();
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}
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/**
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* Get rights for a given account, location and application
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*
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* @param int $account_id
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* @param string $location
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* @param string $appname='' defaults to current app
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* @return int/boolean rights or false if none exist
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*/
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function get_specific_rights_for_account($account_id,$location,$appname='')
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{
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if (!$appname) $appname = $GLOBALS['egw_info']['flags']['currentapp'];
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return $this->db->select(acl::TABLE,'acl_rights',array(
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'acl_location' => $location,
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'acl_account' => $account_id,
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'acl_appname' => $appname,
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),__LINE__,__FILE__)->fetchSingle();
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}
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/**
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* Get all rights for a given location and application
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*
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* @param string $location
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* @param string $appname='' defaults to current app
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* @return array with account => rights pairs
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*/
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function get_all_rights($location,$appname='')
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{
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if (!$appname) $appname = $GLOBALS['egw_info']['flags']['currentapp'];
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$rights = array();
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foreach($this->db->select(acl::TABLE,'acl_account,acl_rights',array(
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'acl_location' => $location,
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'acl_appname' => $appname,
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),__LINE__,__FILE__) as $row)
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{
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$rights[$row['acl_account']] = $row['acl_rights'];
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}
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return $rights;
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}
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/**
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* Get the rights for all locations
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*
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* @param int $account_id
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* @param string $appname='' defaults to current app
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* @param boolean $use_memberships=true
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* @return array with location => rights pairs
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*/
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function get_all_location_rights($account_id,$appname='',$use_memberships=true)
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{
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if (!$appname) $appname = $GLOBALS['egw_info']['flags']['currentapp'];
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$accounts = array($account_id);
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if ($use_memberships)
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{
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foreach((array)$GLOBALS['egw']->accounts->membership($account_id) as $group)
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{
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$accounts[] = $group['account_id'];
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}
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}
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$rights = array();
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foreach($this->db->select(acl::TABLE,'acl_location,acl_rights',array(
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'acl_account' => $accounts,
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'acl_appname' => $appname,
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),__LINE__,__FILE__) as $row)
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{
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$rights[$row['acl_location']] |= $row['acl_rights'];
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}
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return $rights;
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}
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/**
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* get application list for an account id
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*
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* @param string $location location
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* @param int $required required rights
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* @param int $account_id account id defaults to $GLOBALS['egw_info']['user']['account_id'];
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* @return array/boolean false if there are no matching row in the db, else array with app-names
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*/
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function get_app_list_for_id($location, $required, $accountid = '')
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{
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static $cache_accountid;
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if($cache_accountid[$accountid])
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{
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$account_id = $cache_accountid[$accountid];
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}
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else
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{
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$account_id = get_account_id($accountid,$this->account_id);
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$cache_accountid[$accountid] = $account_id;
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}
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$rights = 0;
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$apps = false;
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foreach($this->db->select(acl::TABLE,array('acl_appname','acl_rights'),array(
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'acl_location' => $location,
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'acl_account' => $account_id,
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),__LINE__,__FILE__) as $row)
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{
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if ($row['acl_rights'] == 0)
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{
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return False;
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}
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$rights |= $row['acl_rights'];
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if (!!($rights & $required))
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{
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$apps[] = $row['acl_appname'];
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}
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}
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return $apps;
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}
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|
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/**
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* get location list for id
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*
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* @param string $app app
|
|
* @param int $required required rights
|
|
* @param int $accountid optional defaults to $GLOBALS['egw_info']['user']['account_id'];
|
|
* @return array/boolean false if there are no matching rows in the db or array with location-strings
|
|
*/
|
|
function get_location_list_for_id($app, $required, $accountid = '')
|
|
{
|
|
static $cache_accountid;
|
|
|
|
if($cache_accountid[$accountid])
|
|
{
|
|
$accountid = $cache_accountid[$accountid];
|
|
}
|
|
else
|
|
{
|
|
$accountid = $cache_accountid[$accountid] = get_account_id($accountid,$this->account_id);
|
|
}
|
|
$locations = false;
|
|
foreach($this->db->select(acl::TABLE,'acl_location,acl_rights',array(
|
|
'acl_appname' => $app,
|
|
'acl_account' => $accountid,
|
|
),__LINE__,__FILE__) as $row)
|
|
{
|
|
if ($row['acl_rights'] & $required)
|
|
{
|
|
$locations[] = $row['acl_location'];
|
|
}
|
|
}
|
|
return $locations;
|
|
}
|
|
|
|
/**
|
|
* get ids for location
|
|
*
|
|
* @param string $location location
|
|
* @param int $required required rights
|
|
* @param string $app app optional defaults to $GLOBALS['egw_info']['flags']['currentapp'];
|
|
* @return boolean/array false if there are no matching rows in the db or array of account-ids
|
|
*/
|
|
function get_ids_for_location($location, $required, $app = '')
|
|
{
|
|
if (!$app) $app = $GLOBALS['egw_info']['flags']['currentapp'];
|
|
|
|
$accounts = false;
|
|
foreach($this->db->select(acl::TABLE,array('acl_account','acl_rights'),array(
|
|
'acl_appname' => $app,
|
|
'acl_location' => $location,
|
|
),__LINE__,__FILE__) as $row)
|
|
{
|
|
if (!!($row['acl_rights'] & $required))
|
|
{
|
|
$accounts[] = (int) $row['acl_account'];
|
|
}
|
|
}
|
|
return $accounts;
|
|
}
|
|
|
|
/**
|
|
* get the locations for an app (excluding the run location !!!)
|
|
*
|
|
* @param string $app app optional defaults to $GLOBALS['egw_info']['flags']['currentapp'];
|
|
* @return boolean/array false if there are no matching location in the db or array of locations
|
|
*/
|
|
function get_locations_for_app($app='')
|
|
{
|
|
if (!$app) $app = $GLOBALS['egw_info']['flags']['currentapp'];
|
|
|
|
$locations = false;
|
|
foreach($this->db->select(acl::TABLE,'DISTINCT '.'acl_location',array(
|
|
'acl_appname' => $app,
|
|
),__LINE__,__FILE__) as $row)
|
|
{
|
|
if (($location = $row['acl_location']) != 'run')
|
|
{
|
|
$locations[] = $location;
|
|
}
|
|
}
|
|
return $locations;
|
|
}
|
|
|
|
/**
|
|
* get a list of applications a user has rights to
|
|
*
|
|
* @param int $account_id optional defaults to $GLOBALS['egw_info']['user']['account_id'];
|
|
* @return boolean/array containing list of apps or false if there are none
|
|
*/
|
|
function get_user_applications($accountid = '')
|
|
{
|
|
static $cache_accountid;
|
|
|
|
if($cache_accountid[$accountid])
|
|
{
|
|
$account_id = $cache_accountid[$accountid];
|
|
}
|
|
else
|
|
{
|
|
$account_id = get_account_id($accountid,$this->account_id);
|
|
$cache_accountid[$accountid] = $account_id;
|
|
}
|
|
$memberships = $GLOBALS['egw']->accounts->memberships($account_id,true);
|
|
$memberships[] = $account_id;
|
|
|
|
$apps = false;
|
|
foreach($this->db->select(acl::TABLE,array('acl_appname','acl_rights'),array(
|
|
'acl_location' => 'run',
|
|
'acl_account' => $memberships,
|
|
),__LINE__,__FILE__) as $row)
|
|
{
|
|
$app = $row['acl_appname'];
|
|
if(!isset($apps[$app]))
|
|
{
|
|
$apps[$app] = 0;
|
|
}
|
|
$apps[$app] |= (int) $row['acl_rights'];
|
|
}
|
|
return $apps;
|
|
}
|
|
|
|
/**
|
|
* Read the grants other users gave $this->account_id for $app, group ACL is taken into account
|
|
*
|
|
* @param string $app optional defaults to $GLOBALS['egw_info']['flags']['currentapp']
|
|
* @param boolean/array $enum_group_acls=true should group acls be returned for all members of that group, default yes
|
|
* if an array of group-id's is given, that id's will NOT be enumerated!
|
|
* @return array with account-ids (of owners) and granted rights as values
|
|
*/
|
|
function get_grants($app='',$enum_group_acls=true)
|
|
{
|
|
if (!$app) $app = $GLOBALS['egw_info']['flags']['currentapp'];
|
|
|
|
$memberships = array($this->account_id);
|
|
foreach((array)$GLOBALS['egw']->accounts->membership($this->account_id) as $group)
|
|
{
|
|
$memberships[] = $group['account_id'];
|
|
}
|
|
$grants = $accounts = Array();
|
|
foreach($this->db->select(acl::TABLE,array('acl_account','acl_rights','acl_location'),array(
|
|
'acl_appname' => $app,
|
|
'acl_location' => $memberships,
|
|
),__LINE__,__FILE__) as $row)
|
|
{
|
|
$grantor = $row['acl_account'];
|
|
$rights = $row['acl_rights'];
|
|
$granted_to = (int) $row['acl_location'];
|
|
|
|
if(!isset($grants[$grantor]))
|
|
{
|
|
$grants[$grantor] = 0;
|
|
}
|
|
$grants[$grantor] |= $rights;
|
|
|
|
// if the right is granted from a group and we enummerated group ACL's
|
|
if ($GLOBALS['egw']->accounts->get_type($grantor) == 'g' && $enum_group_acls &&
|
|
(!is_array($enum_group_acls) || !in_array($grantor,$enum_group_acls)))
|
|
{
|
|
// return the grant for each member of the group
|
|
foreach((array)$GLOBALS['egw']->accounts->member($grantor) as $member)
|
|
{
|
|
if (!$member) continue; // can happen if group has no members
|
|
|
|
// Don't allow to override private with group ACL's!
|
|
$rights &= ~EGW_ACL_PRIVATE;
|
|
|
|
$grantor = $member['account_id'];
|
|
|
|
if(!isset($grants[$grantor]))
|
|
{
|
|
$grants[$grantor] = 0;
|
|
}
|
|
$grants[$grantor] |= $rights;
|
|
}
|
|
}
|
|
}
|
|
// user has implizit all rights on own data
|
|
$grants[$GLOBALS['egw_info']['user']['account_id']] = ~0;
|
|
|
|
//echo "acl::get_grants('$app',$enum_group_acls) ".function_backtrace(); _debug_array($grants);
|
|
return $grants;
|
|
}
|
|
|
|
/**
|
|
* Deletes all ACL entries for an account (user or group)
|
|
*
|
|
* @param int $account_id acount-id
|
|
*/
|
|
function delete_account($account_id)
|
|
{
|
|
if ((int) $account_id)
|
|
{
|
|
$this->db->delete(acl::TABLE,array(
|
|
'acl_account' => $account_id
|
|
),__LINE__,__FILE__);
|
|
// delete all memberships in account_id (if it is a group)
|
|
$this->db->delete(acl::TABLE,array(
|
|
'acl_appname' => 'phpgw_group',
|
|
'acl_location' => $account_id,
|
|
),__LINE__,__FILE__);
|
|
}
|
|
}
|
|
} //end of acl class
|