forked from extern/egroupware
774 lines
22 KiB
PHP
774 lines
22 KiB
PHP
<?php
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/**************************************************************************\
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* phpGroupWare API - Access Control List *
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* This file written by Dan Kuykendall <seek3r@phpgroupware.org> *
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* Security scheme based on ACL design *
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* Copyright (C) 2000, 2001 Dan Kuykendall *
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* -------------------------------------------------------------------------*
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* This library is part of the phpGroupWare API *
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* http://www.phpgroupware.org/api *
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* ------------------------------------------------------------------------ *
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* This library is free software; you can redistribute it and/or modify it *
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* under the terms of the GNU Lesser General Public License as published by *
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* the Free Software Foundation; either version 2.1 of the License, *
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* or any later version. *
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* This library is distributed in the hope that it will be useful, but *
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* WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. *
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* See the GNU Lesser General Public License for more details. *
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* You should have received a copy of the GNU Lesser General Public License *
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* along with this library; if not, write to the Free Software Foundation, *
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* Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA *
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\**************************************************************************/
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/* $Id$ */
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/*!
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@class acl
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@abstract Access Control List Security System
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@discussion 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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@syntax CreateObject('phpgwapi.acl',int account_id);
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@example $acl = CreateObject('phpgwapi.acl',5); // 5 is the user id
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@example $acl = CreateObject('phpgwapi.acl',10); // 10 is the user id
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@author Seek3r
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@copyright LGPL
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@package phpgwapi
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@access public
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*/
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class acl
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{
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/*! @var $account_id */
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var $account_id;
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/*! @var $account_type */
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var $account_type;
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/*! @var $data */
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var $data = Array();
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/*! @var $db */
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var $db;
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/*!
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@function acl
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@abstract ACL constructor for setting account id
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@discussion Author: Seek3r <br>
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Sets the ID for $acl->account_id. Can be used to change a current instances id as well. <br>
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Some functions are specific to this account, and others are generic. <br>
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@syntax int acl(int account_id) <br>
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@example1 acl->acl(5); // 5 is the user id <br>
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@param account_id int-the user id
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*/
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function acl($account_id = '')
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{
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copyobj($GLOBALS['phpgw']->db,$this->db);
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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,@$GLOBALS['phpgw_info']['user']['account_id']);
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}
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}
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function DONTlist_methods($_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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@function read_repository
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@abstract Read acl records from reposity
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@discussion Author: Seek3r <br>
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Reads ACL records for $acl->account_id and returns array along with storing it in $acl->data. <br>
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Syntax: array read_repository() <br>
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Example1: acl->read_repository(); <br>
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Should only be called within this class
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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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$sql = 'select * from phpgw_acl where (acl_account in ('.$this->account_id.', 0';
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$groups = $this->get_location_list_for_id('phpgw_group', 1, $this->account_id);
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while($groups && list($key,$value) = each($groups))
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{
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if($value != '')
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$sql .= ','.$value;
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}
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$sql .= '))';
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$this->db->query($sql ,__LINE__,__FILE__);
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$count = $this->db->num_rows();
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$this->data = Array();
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for ($idx = 0; $idx < $count; ++$idx)
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{
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//reset ($this->data);
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//while(list($idx,$value) = each($this->data)){
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$this->db->next_record();
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$this->data[] = array(
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'appname' => $this->db->f('acl_appname'),
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'location' => $this->db->f('acl_location'),
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'account' => $this->db->f('acl_account'),
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'rights' => $this->db->f('acl_rights')
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);
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}
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reset ($this->data);
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return $this->data;
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}
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/*!
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@function read
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@abstract Read acl records from $acl->data
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@discussion Author: Seek3r <br>
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Returns ACL records from $acl->data. <br>
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Syntax: array read() <br>
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Example1: acl->read(); <br>
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*/
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function read()
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{
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if (count($this->data) == 0)
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{
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$this->read_repository();
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}
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reset ($this->data);
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return $this->data;
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}
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/*!
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@function add
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@abstract Adds ACL record to $acl->data
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@discussion Adds ACL record to $acl->data. <br>
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Syntax: array add() <br>
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Example1: acl->add();
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@param $appname default False derives value from $phpgw_info['flags']['currentapp']
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@param $location location
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@param $rights rights
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*/
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function add($appname = False, $location, $rights)
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{
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if ($appname == False)
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{
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settype($appname,'string');
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$appname = $GLOBALS['phpgw_info']['flags']['currentapp'];
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}
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$this->data[] = array('appname' => $appname, 'location' => $location, 'account' => $this->account_id, 'rights' => $rights);
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reset($this->data);
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return $this->data;
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}
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/*!
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@function delete
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@abstract Delete ACL record
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@discussion
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Syntax <br>
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Example: <br>
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@param $appname optional defaults to $phpgw_info['flags']['currentapp']
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@param $location app location
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*/
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function delete($appname = False, $location)
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{
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if ($appname == False)
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{
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settype($appname,'string');
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$appname = $GLOBALS['phpgw_info']['flags']['currentapp'];
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}
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$count = count($this->data);
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reset ($this->data);
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while(list($idx,$value) = each($this->data))
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{
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if ($this->data[$idx]['appname'] == $appname && $this->data[$idx]['location'] == $location && $this->data[$idx]['account'] == $this->account_id)
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{
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$this->data[$idx] = Array();
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}
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}
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reset($this->data);
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return $this->data;
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}
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/*!
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@function save_repostiory
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@abstract save repository
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@discussion save the repository <br>
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Syntax: save_repository() <br>
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example: acl->save_repository()
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*/
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function save_repository()
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{
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reset($this->data);
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$sql = 'delete from phpgw_acl where acl_account = '. (int)$this->account_id;
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$this->db->query($sql ,__LINE__,__FILE__);
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$count = count($this->data);
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reset ($this->data);
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while(list($idx,$value) = each($this->data))
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{
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if ($this->data[$idx]['account'] == $this->account_id)
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{
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$sql = 'insert into phpgw_acl (acl_appname, acl_location, acl_account, acl_rights)';
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$sql .= " values('".$this->data[$idx]['appname']."', '"
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. $this->data[$idx]['location']."', ".$this->account_id.', '.$this->data[$idx]['rights'].')';
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$this->db->query($sql ,__LINE__,__FILE__);
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}
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}
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reset($this->data);
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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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@function get_rights
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@abstract get rights from the repository not specific to this->account_id (?)
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@discussion
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@param $location app location to get rights from
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@param $appname optional defaults to $phpgw_info['flags']['currentapp'];
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*/
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function get_rights($location,$appname = False)
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{
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// For XML-RPC, change this once its working correctly for passing parameters (jengo)
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if (is_array($location))
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{
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$a = $location;
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$location = $a['location'];
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$appname = $a['appname'];
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}
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if (count($this->data) == 0)
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{
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$this->read_repository();
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}
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reset ($this->data);
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if ($appname == False)
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{
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settype($appname,'string');
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$appname = $GLOBALS['phpgw_info']['flags']['currentapp'];
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}
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$count = count($this->data);
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if ($count == 0 && $GLOBALS['phpgw_info']['server']['acl_default'] != 'deny')
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{
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return True;
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}
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$rights = 0;
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//for ($idx = 0; $idx < $count; ++$idx){
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reset ($this->data);
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while(list($idx,$value) = each($this->data))
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{
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if ($this->data[$idx]['appname'] == $appname)
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{
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if ($this->data[$idx]['location'] == $location || $this->data[$idx]['location'] == 'everywhere')
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{
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if ($this->data[$idx]['rights'] == 0)
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{
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return False;
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}
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$rights |= $this->data[$idx]['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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@function check
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@abstract check required rights (not specific to this->account_id?)
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@param $location app location
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@param $required required right to check against
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@param $appname optional defaults to currentapp
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*/
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function check($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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@function get_specific_rights
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@abstract get specific rights for this->account_id for an app location
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@param $location app location
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@param $appname optional defaults to currentapp
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@result $rights ?
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*/
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function get_specific_rights($location, $appname = False)
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{
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if ($appname == False)
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{
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settype($appname,'string');
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$appname = $GLOBALS['phpgw_info']['flags']['currentapp'];
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}
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$count = count($this->data);
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if ($count == 0 && $GLOBALS['phpgw_info']['server']['acl_default'] != 'deny')
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{
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return True;
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}
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$rights = 0;
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reset ($this->data);
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while(list($idx,$value) = each($this->data))
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{
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if ($this->data[$idx]['appname'] == $appname &&
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($this->data[$idx]['location'] == $location ||
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$this->data[$idx]['location'] == 'everywhere') &&
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$this->data[$idx]['account'] == $this->account_id)
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{
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if ($this->data[$idx]['rights'] == 0)
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{
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return False;
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}
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$rights |= $this->data[$idx]['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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@function check_specific
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@abstract check specific
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@param $location app location
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@param $required required rights
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@param $appname optional defaults to currentapp
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@result boolean
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*/
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function check_specific($location, $required, $appname = False)
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{
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$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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@function get_location_list
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@abstract ?
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@param $app appname
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@param $required ?
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*/
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function get_location_list($app, $required)
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{
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// User piece
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$sql = "select acl_location, acl_rights from phpgw_acl where acl_appname = '$app' ";
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$sql .= " and (acl_account in ('".$this->account_id."', 0"; // group 0 covers all users
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$equalto = $GLOBALS['phpgw']->accounts->security_equals($this->account_id);
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if (is_array($equalto) && count($equalto) > 0)
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{
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for ($idx = 0; $idx < count($equalto); ++$idx)
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{
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$sql .= ','.$equalto[$idx][0];
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}
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}
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$sql .= ')))';
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$this->db->query($sql ,__LINE__,__FILE__);
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$rights = 0;
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if ($this->db->num_rows() == 0 )
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{
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return False;
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}
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while ($this->db->next_record())
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{
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if ($this->db->f('acl_rights') == 0)
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{
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return False;
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}
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$rights |= $this->db->f('acl_rights');
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if (!!($rights & $required) == True)
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{
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$locations[] = $this->db->f('acl_location');
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}
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else
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{
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return False;
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}
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}
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return $locations;
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}
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/*
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This is kinda how the function SHOULD work, so that it doesnt need to do its own sql query.
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It should use the values in the $this->data
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function get_location_list($app, $required)
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{
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if ($appname == False)
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{
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$appname = $GLOBALS['phpgw_info']['flags']['currentapp'];
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}
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$count = count($this->data);
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if ($count == 0 && $GLOBALS['phpgw_info']['server']['acl_default'] != 'deny'){ return True; }
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$rights = 0;
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reset ($this->data);
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while(list($idx,$value) = each($this->data))
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{
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if ($this->data[$idx]['appname'] == $appname && $this->data[$idx]['rights'] != 0)
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{
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$location_rights[$this->data[$idx]['location']] |= $this->data[$idx]['rights'];
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}
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}
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reset($location_rights);
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for ($idx = 0; $idx < count($location_rights); ++$idx)
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{
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if (!!($location_rights[$idx] & $required) == True)
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{
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$location_rights[] = $this->data[$idx]['location'];
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}
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}
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return $locations;
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}
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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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@function add_repository
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@abstract add repository information for an app
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@param $app appname
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@param $location location
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@param $account_id account id
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@param $rights rights
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*/
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function add_repository($app, $location, $account_id, $rights)
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{
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$this->delete_repository($app, $location, $account_id);
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$sql = 'insert into phpgw_acl (acl_appname, acl_location, acl_account, acl_rights)';
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$sql .= " values ('" . $app . "','" . $location . "','" . $account_id . "','" . $rights . "')";
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$this->db->query($sql ,__LINE__,__FILE__);
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return True;
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}
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/*!
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@function delete_repository
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@abstract delete repository information for an app
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@param $app appname
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@param $location location
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@param $account_id account id
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*/
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function delete_repository($app, $location, $accountid = '')
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{
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static $cache_accountid;
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if(isset($cache_accountid[$accountid]) && $cache_accountid[$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] = $account_id;
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}
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$sql = "delete from phpgw_acl where acl_appname like '".$app."'"
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. " and acl_location like '".$location."' and "
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. " acl_account = ".$account_id;
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$this->db->query($sql ,__LINE__,__FILE__);
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return $this->db->num_rows();
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}
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/*!
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@function get_app_list_for_id
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@abstract get application list for an account id
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@param $location location
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@param $required ?
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@param $account_id account id defaults to $phpgw_info['user']['account_id'];
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*/
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function get_app_list_for_id($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];
|
|
}
|
|
else
|
|
{
|
|
$account_id = get_account_id($accountid,$this->account_id);
|
|
$cache_accountid[$accountid] = $account_id;
|
|
}
|
|
$sql = 'SELECT acl_appname, acl_rights from phpgw_acl ';
|
|
$sql .= "where acl_location = '" . $this->db->db_addslashes($location) . "' ";
|
|
$sql .= 'AND acl_account = ' . (int)$account_id;
|
|
$this->db->query($sql ,__LINE__,__FILE__);
|
|
$rights = 0;
|
|
if ($this->db->num_rows() == 0 )
|
|
{
|
|
return False;
|
|
}
|
|
while ($this->db->next_record())
|
|
{
|
|
if ($this->db->f('acl_rights') == 0)
|
|
{
|
|
return False;
|
|
}
|
|
$rights |= $this->db->f('acl_rights');
|
|
if (!!($rights & $required) == True)
|
|
{
|
|
$apps[] = $this->db->f('acl_appname');
|
|
}
|
|
}
|
|
return $apps;
|
|
}
|
|
|
|
/*!
|
|
@function get_location_list_for_id
|
|
@abstract get location list for id
|
|
@discussion ?
|
|
@param $app app
|
|
@param $required required
|
|
@param $account_id optional defaults to $phpgw_info['user']['account_id'];
|
|
*/
|
|
function get_location_list_for_id($app, $required, $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;
|
|
}
|
|
$sql = 'SELECT acl_location, acl_rights ';
|
|
$sql .= "FROM phpgw_acl where acl_appname = '" . $this->db->db_addslashes($app) . "' ";
|
|
$sql .= 'AND acl_account =' . (int)$account_id;
|
|
|
|
$this->db->query($sql ,__LINE__,__FILE__);
|
|
$rights = 0;
|
|
if ($this->db->num_rows() == 0 )
|
|
{
|
|
return False;
|
|
}
|
|
while ($this->db->next_record())
|
|
{
|
|
if ($this->db->f('acl_rights'))
|
|
{
|
|
$rights |= $this->db->f('acl_rights');
|
|
if (!!($rights & $required) == True)
|
|
{
|
|
$locations[] = $this->db->f('acl_location');
|
|
}
|
|
}
|
|
}
|
|
return $locations;
|
|
}
|
|
/*!
|
|
@function get_ids_for_location
|
|
@abstract get ids for location
|
|
@param $location location
|
|
@param $required required
|
|
@param $app app optional defaults to $phpgw_info['flags']['currentapp'];
|
|
*/
|
|
function get_ids_for_location($location, $required, $app = False)
|
|
{
|
|
if ($app == False)
|
|
{
|
|
$app = $GLOBALS['phpgw_info']['flags']['currentapp'];
|
|
}
|
|
$sql = "select acl_account, acl_rights from phpgw_acl where acl_appname = '$app' and ";
|
|
$sql .= "acl_location = '".$location."'";
|
|
$this->db->query($sql ,__LINE__,__FILE__);
|
|
$rights = 0;
|
|
if ($this->db->num_rows() == 0 )
|
|
{
|
|
return False;
|
|
}
|
|
while ($this->db->next_record())
|
|
{
|
|
$rights = 0;
|
|
$rights |= $this->db->f('acl_rights');
|
|
if (!!($rights & $required) == True)
|
|
{
|
|
$accounts[] = (int)$this->db->f('acl_account');
|
|
}
|
|
}
|
|
@reset($accounts);
|
|
return $accounts;
|
|
}
|
|
|
|
/*!
|
|
@function get_user_applications
|
|
@abstract get a list of applications a user has rights to
|
|
@param $account_id optional defaults to $phpgw_info['user']['account_id'];
|
|
@result $apps array containing list of apps
|
|
*/
|
|
function get_user_applications($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;
|
|
}
|
|
$db2 = $this->db;
|
|
$memberships = $GLOBALS['phpgw']->accounts->membership($account_id);
|
|
$sql = "select acl_appname, acl_rights from phpgw_acl where acl_location = 'run' and "
|
|
. 'acl_account in ';
|
|
$security = '('.$account_id;
|
|
while($groups = @each($memberships))
|
|
{
|
|
$group = each($groups);
|
|
$security .= ','.$group[1]['account_id'];
|
|
}
|
|
$security .= ')';
|
|
$db2->query($sql . $security ,__LINE__,__FILE__);
|
|
|
|
if ($db2->num_rows() == 0)
|
|
{
|
|
return False;
|
|
}
|
|
while ($db2->next_record())
|
|
{
|
|
if(isset($apps[$db2->f('acl_appname')]))
|
|
{
|
|
$rights = $apps[$db2->f('acl_appname')];
|
|
}
|
|
else
|
|
{
|
|
$rights = 0;
|
|
$apps[$db2->f('acl_appname')] = 0;
|
|
}
|
|
$rights |= $db2->f('acl_rights');
|
|
$apps[$db2->f('acl_appname')] |= $rights;
|
|
}
|
|
return $apps;
|
|
}
|
|
/*!
|
|
@function get_grants
|
|
@abstract ?
|
|
@param $app optional defaults to $phpgw_info['flags']['currentapp'];
|
|
*/
|
|
function get_grants($app='')
|
|
{
|
|
$db2 = $this->db;
|
|
|
|
if ($app=='')
|
|
{
|
|
$app = $GLOBALS['phpgw_info']['flags']['currentapp'];
|
|
}
|
|
|
|
$sql = "select acl_account, acl_rights from phpgw_acl where acl_appname = '$app' and "
|
|
. "acl_location in ";
|
|
$security = "('". $this->account_id ."'";
|
|
$myaccounts = CreateObject('phpgwapi.accounts');
|
|
$my_memberships = $myaccounts->membership($this->account_id);
|
|
unset($myaccounts);
|
|
@reset($my_memberships);
|
|
while($my_memberships && list($key,$group) = each($my_memberships))
|
|
{
|
|
$security .= ",'" . $group['account_id'] . "'";
|
|
}
|
|
$security .= ')';
|
|
$db2->query($sql . $security ,__LINE__,__FILE__);
|
|
$rights = 0;
|
|
$accounts = Array();
|
|
if ($db2->num_rows() == 0)
|
|
{
|
|
$grants[$GLOBALS['phpgw_info']['user']['account_id']] = ~0;
|
|
return $grants;
|
|
}
|
|
while ($db2->next_record())
|
|
{
|
|
$grantor = $db2->f('acl_account');
|
|
$rights = $db2->f('acl_rights');
|
|
|
|
if(!isset($accounts[$grantor]))
|
|
// cache the group-members for performance
|
|
{
|
|
// if $grantor is a group, get its members
|
|
$members = $this->get_ids_for_location($grantor,1,'phpgw_group');
|
|
if(!$members)
|
|
{
|
|
$accounts[$grantor] = Array($grantor);
|
|
$is_group[$grantor] = False;
|
|
}
|
|
else
|
|
{
|
|
$accounts[$grantor] = $members;
|
|
$is_group[$grantor] = True;
|
|
}
|
|
}
|
|
if(@$is_group[$grantor])
|
|
{
|
|
// Don't allow to override private!
|
|
$rights &= (~ PHPGW_ACL_PRIVATE);
|
|
if(!isset($grants[$grantor]))
|
|
{
|
|
$grants[$grantor] = 0;
|
|
}
|
|
$grants[$grantor] |= $rights;
|
|
if(!!($rights & PHPGW_ACL_READ))
|
|
{
|
|
$grants[$grantor] |= PHPGW_ACL_READ;
|
|
}
|
|
}
|
|
while(list($nul,$grantors) = each($accounts[$grantor]))
|
|
{
|
|
if(!isset($grants[$grantors]))
|
|
{
|
|
$grants[$grantors] = 0;
|
|
}
|
|
$grants[$grantors] |= $rights;
|
|
}
|
|
reset($accounts[$grantor]);
|
|
}
|
|
$grants[$GLOBALS['phpgw_info']['user']['account_id']] = ~0;
|
|
|
|
return $grants;
|
|
}
|
|
} //end of acl class
|
|
?>
|