mirror of
https://github.com/Combodo/iTop.git
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126 lines
4.1 KiB
PHP
126 lines
4.1 KiB
PHP
<?php
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// Copyright (C) 2010-2015 Combodo SARL
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//
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// This file is part of iTop.
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//
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// iTop is free software; you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// iTop is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with iTop. If not, see <http://www.gnu.org/licenses/>
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namespace Combodo\iTop\Portal\Helper;
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use \Exception;
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use \Silex\Application;
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use \utils;
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use \UserRights;
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use \Dict;
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use \MetaModel;
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use \DBObjectSet;
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use \FieldExpression;
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use \VariableExpression;
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use \BinaryExpression;
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use \Combodo\iTop\Portal\Helper\ScopeValidatorHelper;
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/**
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* SecurityHelper class
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*
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* Handle security checks through the different layers (portal scopes, iTop silos, user rights)
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*
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* @author Guillaume Lajarige <guillaume.lajarige@combodo.com>
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*/
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class SecurityHelper
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{
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/**
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* Returns true if the current user is allowed to do the $sAction on an $sObjectClass object (with optionnal $sObjectId id)
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*
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* @param Silex\Application $oApp
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* @param string $sAction Must be in UR_ACTION_READ|UR_ACTION_MODIFY|UR_ACTION_CREATE
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* @param string $sObjectClass
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* @param string $sObjectId
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* @return boolean
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*/
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public static function IsActionAllowed(Application $oApp, $sAction, $sObjectClass, $sObjectId = null)
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{
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// Checking action type
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if (!in_array($sAction, array(UR_ACTION_READ, UR_ACTION_MODIFY, UR_ACTION_CREATE)))
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{
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return false;
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}
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// Checking the scopes layer
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// - Transforming scope action as there is only 2 values
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$sScopeAction = ($sAction === UR_ACTION_READ) ? UR_ACTION_READ : UR_ACTION_MODIFY;
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// - Retrieving the query
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$oScopeQuery = $oApp['scope_validator']->GetScopeFilterForProfiles(UserRights::ListProfiles(), $sObjectClass, $sScopeAction);
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if ($oScopeQuery === null)
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{
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return false;
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}
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// - If action != create we do some additionnal checks
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if ($sAction !== UR_ACTION_CREATE)
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{
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// - Adding object id to the query if specified
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if ($sObjectId !== null)
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{
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// - Adding expression
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$sObjectKeyAtt = MetaModel::DBGetKey($sObjectClass);
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$oFieldExp = new FieldExpression($sObjectKeyAtt, $oScopeQuery->GetClassAlias());
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$oBinExp = new BinaryExpression($oFieldExp, '=', new VariableExpression('object_id'));
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$oScopeQuery->AddConditionExpression($oBinExp);
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// - Setting value
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$aQueryParams = $oScopeQuery->GetInternalParams();
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$aQueryParams['object_id'] = $sObjectId;
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$oScopeQuery->SetInternalParams($aQueryParams);
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unset($aQueryParams);
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}
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// - Checking if query result is null
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$oSet = new DBObjectSet($oScopeQuery);
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if ($oSet->Count() === 0)
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{
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return false;
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}
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// Checking if the cmdbAbstractObject exists if id is specified
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if ($sObjectId !== null)
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{
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$oObject = MetaModel::GetObject($sObjectClass, $sObjectId, false /* MustBeFound */);
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if ($oObject === null)
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{
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return false;
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}
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unset($oObject);
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}
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}
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// Checking reading security layer. The object could be listed, check if it is actually allowed to view it
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if (UserRights::IsActionAllowed($sObjectClass, $sAction) == UR_ALLOWED_NO)
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{
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// For security reasons, we don't want to give the user too many informations on why he cannot access the object.
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//throw new SecurityException('User not allowed to view this object', array('class' => $sObjectClass, 'id' => $sObjectId));
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return false;
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}
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return true;
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}
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public static function IsStimulusAllowed(Application $oApp, $sStimulusCode, $sObjectClass, $oInstanceSet = null)
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{
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$aStimuli = Metamodel::EnumStimuli($sObjectClass);
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$iActionAllowed = (get_class($aStimuli[$sStimulusCode]) == 'StimulusUserAction') ? UserRights::IsStimulusAllowed($sObjectClass, $sStimulusCode, $oInstanceSet) : UR_ALLOWED_NO;
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}
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}
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?>
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