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egroupware/phpgwapi/inc/class.acl.inc.php

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<?php
/**************************************************************************\
* phpGroupWare API - Access Control List *
* This file written by Dan Kuykendall <seek3r@phpgroupware.org> *
* Security scheme based on ACL design *
* Copyright (C) 2000, 2001 Dan Kuykendall *
* -------------------------------------------------------------------------*
* This library is part of the phpGroupWare API *
* http://www.phpgroupware.org/api *
* ------------------------------------------------------------------------ *
* This library is free software; you can redistribute it and/or modify it *
* under the terms of the GNU Lesser General Public License as published by *
* the Free Software Foundation; either version 2.1 of the License, *
* or any later version. *
* This library is distributed in the hope that it will be useful, but *
* WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. *
* See the GNU Lesser General Public License for more details. *
* You should have received a copy of the GNU Lesser General Public License *
* along with this library; if not, write to the Free Software Foundation, *
* Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA *
\**************************************************************************/
/* $Id$ */
class acl
{
var $db;
function acl()
{
global $phpgw;
$this->db = $phpgw->db;
}
/* This is a new class. These are sample table entries
insert into phpgw_acl (acl_appname, acl_location, acl_account, acl_account_type, acl_rights)
values('filemanager', 'create', 1, 'u', 4);
insert into phpgw_acl (acl_appname, acl_location, acl_account, acl_account_type, acl_rights)
values('filemanager', 'create', 1, 'g', 2);
insert into phpgw_acl (acl_appname, acl_location, acl_account, acl_account_type, acl_rights)
values('filemanager', 'create', 2, 'u', 1);
insert into phpgw_acl (acl_appname, acl_location, acl_account, acl_account_type, acl_rights)
values('filemanager', 'create', 2, 'g', 2);
*/
function get_rights($location,$appname = False, $user_id = ""){
global $phpgw, $phpgw_info;
if ($appname == False){
$appname = $phpgw_info["flags"]["currentapp"];
}
if($user_id == "") {
$user_id = $phpgw_info["user"]["account_id"];
}
// User piece
$sql = "select acl_rights from phpgw_acl where acl_appname='$appname'";
$sql .= " and (acl_location in ('$location','everywhere')) and ";
$sql .= "((acl_account_type = 'u' and acl_account = ".$user_id.")";
// Group piece
$sql .= " or (acl_account_type='g' and acl_account in (0"; // group 0 covers all users
$memberships = $phpgw->accounts->read_group_names();
if (is_array($memberships) && count($memberships) > 0){
for ($idx = 0; $idx < count($memberships); ++$idx){
$sql .= ",".$memberships[$idx][0];
}
}
$sql .= ")))";
$rights = 0;
$this->db->query($sql ,__LINE__,__FILE__);
if ($this->db->num_rows() == 0 && $phpgw_info["server"]["acl_default"] != "deny"){ return True; }
while ($this->db->next_record()) {
if ($this->db->f("acl_rights") == 0){ return False; }
$rights |= $this->db->f("acl_rights");
}
return $rights;
}
function check($location, $required, $appname = False, $user_id = ""){
global $phpgw, $phpgw_info;
$rights = $this->get_rights($location,$appname, $user_id);
return !!($rights & $required);
}
function get_specific_rights($location, $appname = False, $id = "", $id_type = "u"){
global $phpgw, $phpgw_info;
if ($appname == False){
$appname = $phpgw_info["flags"]["currentapp"];
}
if($id == "") {
$id = $phpgw_info["user"]["account_id"];
}
// User piece
$sql = "select acl_rights from phpgw_acl where acl_appname='$appname'";
$sql .= " and acl_location = '$location' and ";
$sql .= "acl_account_type = '".$id_type."' and acl_account = ".$id;
$this->db->query($sql ,__LINE__,__FILE__);
$rights = 0;
if ($this->db->num_rows() == 0 && $phpgw_info["server"]["acl_default"] != "deny"){
echo "rows: ".$this->db->num_rows()."<br>";
return True;
}
while ($this->db->next_record()) {
if ($this->db->f("acl_rights") == 0){ return False; }
$rights |= $this->db->f("acl_rights");
}
return $rights;
}
function check_specific($location, $required, $appname = False, $id = "", $id_type = "u"){
global $phpgw, $phpgw_info;
$rights = $this->get_specific_rights($location,$appname, $id, $id_type);
return !!($rights & $required);
}
function add($app, $location, $id, $id_type, $rights){
$sql = "insert into phpgw_acl (acl_appname, acl_location, acl_account, acl_account_type, acl_rights)";
$sql .= " values('".$app."', '".$location."', ".$id.", '".$id_type."', ".$rights.")";
$this->db->query($sql ,__LINE__,__FILE__);
return True;
}
function delete($app, $location, $id, $id_type){
$sql = "delete from phpgw_acl where acl_appname like '".$app."'"
. " and acl_location like '".$location."' and "
. " acl_account_type = '".$id_type."' and acl_account = ".$id;
$this->db->query($sql ,__LINE__,__FILE__);
return $this->db->num_rows();
}
function replace($app, $location, $id, $id_type, $rights){
$this->delete($app, $location, $id, $id_type);
$this->add($app, $location, $id, $id_type, $rights);
return True;
}
function get_app_list_for_id($location, $required, $id = "", $id_type = "u"){
global $phpgw, $phpgw_info;
if ($id == ""){ $id = $phpgw_info["user"]["account_id"]; }
$sql = "select acl_appname, acl_rights from phpgw_acl where acl_location = '$location' and ";
$sql .= "acl_account_type = '".$id_type."' and acl_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 $apps;
}
function get_location_list($app, $required){
global $phpgw, $phpgw_info;
// User piece
$sql = "select acl_location, acl_rights from phpgw_acl where acl_appname = '$app' ";
$sql .= " and ((acl_account_type = 'u' and acl_account = '".$phpgw_info["user"]["account_id"]."')";
// Group piece
$sql .= " or (acl_account_type='g' and acl_account in (0"; // group 0 covers all users
$memberships = $phpgw->accounts->read_group_names();
if (is_array($memberships) && count($memberships) > 0){
for ($idx = 0; $idx < count($memberships); ++$idx){
$sql .= ",".$memberships[$idx][0];
}
}
$sql .= ")))";
$this->db->query($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){
$locations[] = $this->db->f("acl_location");
}else{
return False;
}
}
return $locations;
}
function get_location_list_for_id($app, $required, $id_type = "", $id = ""){
global $phpgw, $phpgw_info;
if ($id == ""){ $id = $phpgw_info["user"]["account_id"]; }
if ($id_type == ""){ $id_type = "u"; }
$sql = "select acl_location, acl_rights from phpgw_acl where acl_appname = '$app' and ";
$sql .= "acl_account_type = '".$id_type."' and acl_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){
$locations[] = $this->db->f("acl_location");
}else{
return False;
}
}
return $locations;
}
} //end of acl class
?>
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