class.ilSoapExerciseAdministration.php

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<?php
  /*
   +-----------------------------------------------------------------------------+
   | ILIAS open source                                                           |
   +-----------------------------------------------------------------------------+
   | Copyright (c) 1998-2006 ILIAS open source, University of Cologne            |
   |                                                                             |
   | This program is free software; you can redistribute it and/or               |
   | modify it under the terms of the GNU General Public License                 |
   | as published by the Free Software Foundation; either version 2              |
   | of the License, or (at your option) any later version.                      |
   |                                                                             |
   | This program 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 General Public License for more details.                                |
   |                                                                             |
   | You should have received a copy of the GNU General Public License           |
   | along with this program; if not, write to the Free Software                 |
   | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA. |
   +-----------------------------------------------------------------------------+
  */


include_once './webservice/soap/classes/class.ilSoapAdministration.php';

class ilSoapExerciseAdministration extends ilSoapAdministration
{
        function ilSoapExerciseAdministration()
        {
                parent::ilSoapAdministration();
        }

        function addExercise ($sid, $target_id, $exercise_xml) 
        {
                $this->initAuth($sid);
                $this->initIlias();

                if(!$this->__checkSession($sid))
                {
                        return $this->__raiseError($this->__getMessage(),$this->__getMessageCode());
                }
                global $rbacsystem, $tree, $ilLog;

                if(!$target_obj =& ilObjectFactory::getInstanceByRefId($target_id,false))
                {
                        return $this->__raiseError('No valid target given.', 'Client');
                }

                if(ilObject::_isInTrash($target_id))
                {
                        return $this->__raiseError("Parent with ID $target_id has been deleted.", 'CLIENT_OBJECT_DELETED');
                }

                // Check access
                $allowed_types = array('cat','grp','crs','fold','root');
                if(!in_array($target_obj->getType(), $allowed_types))
                {
                        return $this->__raiseError('No valid target type. Target must be reference id of "course, group, category or folder"', 'Client');
                }

                if(!$rbacsystem->checkAccess('create',$target_id,"exc"))
                {
                        return $this->__raiseError('No permission to create exercises in target  '.$target_id.'!', 'Client');
                }

                // create object, put it into the tree and use the parser to update the settings
                include_once './Modules/Exercise/classes/class.ilObjExercise.php';
                include_once './Modules/Exercise/classes/class.ilExerciseXMLParser.php';
                include_once './Modules/Exercise/exceptions/class.ilExerciseException.php';


                $exercise = new ilObjExercise();
                $exercise->create();
                $exercise->createReference();
                $exercise->putInTree($target_id);
                $exercise->setPermissions($target_id);
                $exercise->saveData();

                // we need this as workaround because file and member objects need to be initialised
                $exercise->read();

                $exerciseXMLParser = new ilExerciseXMLParser($exercise, $exercise_xml);
                try
                {
                        if ($exerciseXMLParser->start()) {
                                $exerciseXMLParser->getAssignment()->update();
                                return $exercise->update() ? $exercise->getRefId() : -1;
                        }
                        throw new ilExerciseException ("Could not parse XML");
                } catch(ilExerciseException $exception) {
                        return $this->__raiseError($exception->getMessage(),
                                                                        $exception->getCode() == ilExerciseException::$ID_MISMATCH ? "Client" : "Server");
                }
        }


        function updateExercise ($sid, $ref_id, $exercise_xml) 
        {
                $this->initAuth($sid);
                $this->initIlias();

                if(!$this->__checkSession($sid))
                {
                        return $this->__raiseError($this->__getMessage(),$this->__getMessageCode());
                }
                global $rbacsystem, $tree, $ilLog;

                if(ilObject::_isInTrash($ref_id))
                {
                        return $this->__raiseError('Cannot perform update since exercise has been deleted.', 'CLIENT_OBJECT_DELETED');
                }
                // get obj_id
                if(!$obj_id = ilObject::_lookupObjectId($ref_id))
                {
                        return $this->__raiseError('No exercise found for id: '.$ref_id,
                                                                           'CLIENT_OBJECT_NOT_FOUND');
                }

                // Check access
                $permission_ok = false;
                foreach($ref_ids = ilObject::_getAllReferences($obj_id) as $ref_id)
                {
                        if($rbacsystem->checkAccess('edit',$ref_id))
                        {
                                $permission_ok = true;
                                break;
                        }
                }

                if(!$permission_ok)
                {
                        return $this->__raiseError('No permission to edit the exercise with id: '.$ref_id,
                                                                        'Server');
                }


                $exercise = ilObjectFactory::getInstanceByObjId($obj_id, false);

                if (!is_object($exercise) || $exercise->getType()!= "exc")
                {
                        return $this->__raiseError('Wrong obj id or type for exercise with id '.$ref_id,
                                                                        'CLIENT_OBJECT_NOI_FOUND');
                }

                include_once './Modules/Exercise/classes/class.ilExerciseXMLParser.php';
                include_once './Modules/Exercise/exceptions/class.ilExerciseException.php';
                $exerciseXMLParser = new ilExerciseXMLParser($exercise, $exercise_xml, $obj_id);

                try
                {
                        if ($exerciseXMLParser->start()) {
                                $exerciseXMLParser->getAssignment()->update();
                                return $exercise->update();
                        }
                        throw new ilExerciseException ("Could not parse XML");
                } catch(ilExerciseException $exception) {
                        return $this->__raiseError($exception->getMessage(),
                                                                           $exception->getCode() == ilExerciseException::$ID_MISMATCH ? "Client" : "Server");
                }
                return false;
        }

        function getExerciseXML ($sid, $ref_id, $attachFileContentsMode) {

                $this->initAuth($sid);
                $this->initIlias();

                if(!$this->__checkSession($sid))
                {
                        return $this->__raiseError($this->__getMessage(),$this->__getMessageCode());
                }
                if(!strlen($ref_id))
                {
                        return $this->__raiseError('No ref id given. Aborting!',
                                                                           'Client');
                }
                global $rbacsystem, $tree, $ilLog;

                // get obj_id
                if(!$obj_id = ilObject::_lookupObjectId($ref_id))
                {
                        return $this->__raiseError('No exercise found for id: '.$ref_id,
                                                                           'Client');
                }

                if(ilObject::_isInTrash($ref_id))
                {
                        return $this->__raiseError("Parent with ID $ref_id has been deleted.", 'Client');
                }



                // Check access
                $permission_ok = false;
                $write_permission_ok = false;
                foreach($ref_ids = ilObject::_getAllReferences($obj_id) as $ref_id)
                {
                        if($rbacsystem->checkAccess('write',$ref_id))  // #14299
                        {
                                $write_permission_ok = true;
                                break;
                        }                   
                    if($rbacsystem->checkAccess('read',$ref_id))
                        {
                                $permission_ok = true;
                                break;
                        }
                        
                }

                if(!$permission_ok && !$write_permission_ok)
                {
                        return $this->__raiseError('No permission to edit the object with id: '.$ref_id,
                                                                           'Server');
                }

                $exercise = ilObjectFactory::getInstanceByObjId($obj_id, false);

                if (!is_object($exercise) || $exercise->getType()!= "exc")
                {
                        return $this->__raiseError('Wrong obj id or type for exercise with id '.$ref_id,
                                                                           'Server');
                }
                // store into xml result set
                include_once './Modules/Exercise/classes/class.ilExerciseXMLWriter.php';

                // create writer
                $xmlWriter = new ilExerciseXMLWriter();
                $xmlWriter->setExercise($exercise);
                $xmlWriter->setAttachMembers($write_permission_ok);
                $xmlWriter->setAttachFileContents($attachFileContentsMode);
                $xmlWriter->start();

                return $xmlWriter->getXML();
        }
}
?>