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permissions_event_handler.php
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Sat, Sep 27, 9:53 PM

permissions_event_handler.php
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<?php
/**
* @version $Id: permissions_event_handler.php 15698 2013-02-19 11:33:17Z alex $
* @package In-Portal
* @copyright Copyright (C) 1997 - 2009 Intechnic. All rights reserved.
* @license GNU/GPL
* In-Portal is Open Source software.
* This means that this software may have been modified pursuant
* the GNU General Public License, and as distributed it includes
* or is derivative of works licensed under the GNU General Public License
* or other free or open source software licenses.
* See http://www.in-portal.org/license for copyright notices and details.
*/
defined('FULL_PATH') or die('restricted access!');
class PermissionsEventHandler extends kDBEventHandler {
/**
* Allows to override standard permission mapping
*
* @return void
* @access protected
* @see kEventHandler::$permMapping
*/
protected function mapPermissions()
{
parent::mapPermissions();
$permissions = Array (
'OnGroupSavePermissions' => Array ('subitem' => 'advanced:manage_permissions'),
);
$this->permMapping = array_merge($this->permMapping, $permissions);
}
/**
* Save category permissions
*
* @param kEvent $event
*/
function OnCategorySavePermissions($event)
{
$group_id = $this->Application->GetVar('current_group_id');
$category_id = $this->Application->GetVar('c_id');
$permissions = $this->Application->GetVar($event->getPrefixSpecial(true));
if (isset($permissions[$group_id])) {
$permissions = $permissions[$group_id];
$object = $event->getObject( Array('skip_autoload' => true) );
$permissions_helper = $this->Application->recallObject('PermissionsHelper');
/* @var $permissions_helper kPermissionsHelper */
$permissions_helper->LoadPermissions($group_id, $category_id, 0, 'c');
// format: <perm_name>['inherited'] || <perm_name>['value']
$delete_ids = Array();
$create_sql = Array();
$update_sql = Array();
$create_mask = '(%s,%s,'.$group_id.',%s,0,'.$category_id.')';
$new_id = (int)$this->Conn->GetOne('SELECT MIN('.$object->IDField.') FROM '.$object->TableName);
if($new_id > 0) $new_id = 0;
--$new_id;
foreach ($permissions as $perm_name => $perm_data) {
$inherited = $perm_data['inherited'];
$perm_value = isset($perm_data['value']) ? $perm_data['value'] : false;
$perm_id = $permissions_helper->getPermissionID($perm_name);
if ($inherited && ($perm_id != 0)) {
// permission become inherited (+ direct value was set before) => DELETE
$delete_ids[] = $permissions_helper->getPermissionID($perm_name);
}
if (!$inherited) {
// not inherited
if (($perm_id != 0) && ($perm_value != $permissions_helper->getPermissionValue($perm_name))) {
// record was found in db & new value differs from old one => UPDATE
$update_sql[$perm_id] = ' UPDATE '.$object->TableName.'
SET PermissionValue = '.$perm_value.'
WHERE (PermissionId = '.$perm_id.')';
}
if ($perm_id == 0) {
// not found in db, but set directly => INSERT
$create_sql[] = sprintf($create_mask, $new_id--, $this->Conn->qstr($perm_name), $this->Conn->qstr($perm_value));
}
}
// permission state was not changed in all other cases
}
$this->UpdatePermissions($event, $create_sql, $update_sql, $delete_ids);
}
$event->MasterEvent->SetRedirectParam('item_prefix', $this->Application->GetVar('item_prefix'));
$event->MasterEvent->SetRedirectParam('group_id', $this->Application->GetVar('group_id'));
}
/**
* Saves permissions while editing group
*
* @param kEvent $event
*
* @return void
* @access protected
*/
protected function OnGroupSavePermissions($event)
{
if ( !$this->Application->CheckPermission('in-portal:user_groups.advanced:manage_permissions', 1) ) {
// no permission to save permissions
return ;
}
$permissions = $this->Application->GetVar($event->getPrefixSpecial(true));
if ( !$permissions ) {
return ;
}
$object = $event->getObject( Array ('skip_autoload' => true) );
/* @var $object kDBItem */
$group_id = $this->Application->GetVar('g_id');
$permissions_helper = $this->Application->recallObject('PermissionsHelper');
/* @var $permissions_helper kPermissionsHelper */
$permissions_helper->LoadPermissions($group_id, 0, 1, 'g');
$delete_ids = $create_sql = Array ();
$create_mask = '(%s,%s,' . $group_id . ',%s,1,0)';
$new_id = (int)$this->Conn->GetOne('SELECT MIN(' . $object->IDField . ') FROM ' . $object->TableName);
if ( $new_id > 0 ) {
$new_id = 0;
}
--$new_id;
$sections_helper = $this->Application->recallObject('SectionsHelper');
/* @var $sections_helper kSectionsHelper */
foreach ($permissions as $section_name => $section_permissions) {
$section_data =& $sections_helper->getSectionData($section_name);
if ( $section_data && isset($section_data['perm_prefix']) ) {
// using permission from other prefix
$section_name = $this->Application->getUnitConfig($section_data['perm_prefix'])->getPermSectionByName('main');
}
foreach ($section_permissions as $perm_name => $perm_value) {
if ( !$permissions_helper->isOldPermission($section_name, $perm_name) ) {
$perm_name = $section_name . '.' . $perm_name;
}
$db_perm_value = $permissions_helper->getPermissionValue($perm_name);
if ( $db_perm_value == 1 && $perm_value == 0 ) {
// permission was disabled => delete it's record
$delete_ids[] = $permissions_helper->getPermissionID($perm_name);
}
elseif ( $db_perm_value == 0 && $perm_value == 1 ) {
// permission was enabled => created it's record
$create_sql[$perm_name] = sprintf($create_mask, $new_id--, $this->Conn->qstr($perm_name), $this->Conn->qstr($perm_value));
}
// permission state was not changed in all other cases
}
}
$this->UpdatePermissions($event, $create_sql, Array (), $delete_ids);
if ( $this->Application->GetVar('advanced_save') == 1 ) {
// advanced permission popup [save button]
$this->finalizePopup($event);
// $event->redirect = 'incs/just_close';
}
elseif ( $this->Application->GetVar('section_name') != '' ) {
// save simple permissions before opening advanced permission popup
$event->redirect = false;
}
}
/**
* Apply modification sqls to permissions table
*
* @param kEvent $event
* @param Array $create_sql
* @param Array $update_sql
* @param Array $delete_ids
*/
function UpdatePermissions($event, $create_sql, $update_sql, $delete_ids)
{
$object = $event->getObject();
/* @var $object kDBItem */
if ($delete_ids) {
$action = ChangeLog::DELETE;
$object->Load($delete_ids[count($delete_ids) - 1]);
$delete_sql = ' DELETE FROM '.$object->TableName.'
WHERE '.$object->IDField.' IN ('.implode(',', $delete_ids).')';
$this->Conn->Query($delete_sql);
}
if ($create_sql) {
$create_sql = ' INSERT INTO '.$object->TableName.'
VALUES '.implode(',', $create_sql);
$this->Conn->Query($create_sql);
$sql = 'SELECT MIN(' . $object->IDField . ')
FROM ' . $object->TableName;
$id = $this->Conn->GetOne($sql);
$action = ChangeLog::CREATE;
$object->Load($id);
}
if ($update_sql) {
foreach ($update_sql as $id => $sql) {
$this->Conn->Query($sql);
}
$action = ChangeLog::UPDATE;
$object->Load($id);
$object->SetDBField('PermissionValue', $object->GetDBField('PermissionValue') ? 0 : 1);
}
if ($delete_ids || $create_sql || $update_sql) {
$object->setModifiedFlag($action);
if ($event->Name == 'OnCategorySavePermissions') {
$this->Application->StoreVar('PermCache_UpdateRequired', 1);
}
}
}
/**
* Don't delete permissions from live table in case of new category creation.
* Called as much times as permission count for categories set, so don't
* perform any sql queries here!
*
* @param kEvent $event
* @return void
* @access protected
*/
protected function OnBeforeDeleteFromLive(kEvent $event)
{
parent::OnBeforeDeleteFromLive($event);
if ( $event->Prefix == 'c-perm' ) {
// only when saving category permissions, not group permissions
$foreign_keys = $event->getEventParam('foreign_key');
if ( (count($foreign_keys) == 1) && ($foreign_keys[0] == 0) ) {
// parent item has zero id
$temp_object = $this->Application->recallObject('c');
/* @var $temp_object CategoriesItem */
if ( $temp_object->isLoaded() ) {
// category with id = 0 found in temp table
$event->status = kEvent::erFAIL;
}
}
}
}
}

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