class.ilChatroomUploadFileTask.php

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<?php
/* Copyright (c) 1998-2009 ILIAS open source, Extended GPL, see docs/LICENSE */


class ilChatroomUploadFileTask extends ilDBayTaskHandler
{

        private $gui;

        public function __construct(ilDBayObjectGUI $gui)
        {
                $this->gui = $gui;
        }

        public function executeDefault($requestedMethod)
        {

        }

        public function uploadFile()
        {
                global $ilCtrl;
                
            if ( !ilChatroom::checkUserPermissions( 'read', $this->gui->ref_id ) )
            {
                $ilCtrl->setParameterByClass("ilrepositorygui", "ref_id", ROOT_FOLDER_ID);
                $ilCtrl->redirectByClass("ilrepositorygui", "");
            }

            $upload_path = $this->getUploadPath();

            $this->checkUploadPath($upload_path);

            $file       = $_FILES['file_to_upload']['tmp_name'];
            $filename   = $_FILES['file_to_upload']['name'];
            $type       = $_FILES['file_to_upload']['type'];
            $target     = $upload_path . $filename;

            if( ilUtil::moveUploadedFile( $file, $filename, $target ) )
            {
                global $ilUser;

                require_once 'Modules/Chatroom/classes/class.ilChatroom.php';
                require_once 'Modules/Chatroom/classes/class.ilChatroomUser.php';

                $room       = ilChatroom::byObjectId( $this->gui->object->getId() );
                $chat_user  = new ilChatroomUser($ilUser, $room);
                $user_id    = $chat_user->getUserId();

                if( !$room )
                {
                    throw new Exception('unkown room');
                }
                else if( !$room->isSubscribed( $chat_user->getUserId() ) )
                {
                    throw new Exception('not subscribed');
                }

                $room->saveFileUploadToDb($user_id, $filename, $type);
                $this->displayLinkToUploadedFile($room, $chat_user);
            }

        }

        protected function displayLinkToUploadedFile($room, $chat_user)
        {
                global $ilCtrl;

                $scope              = $room->getRoomId();
                $params             = array();
                $params['public']   = 1;
                $message = json_encode( $this->buildMessage(
                json_encode(array(
                                        'format' => array(),
                                        'content' => ilUtil::stripSlashes(
                                                        'Eine neue Datei mit dem Link ' .
                $ilCtrl->getLinkTarget($this->gui, 'uploadFile-deliverFile') .
                                                        ' wurde hochgeladen'
                                                        )
                                                        )) , $params, $chat_user
                                                        ) );

                                                        $params = array_merge( $params, array('message' => $message) );
                                                        $query  = http_build_query( $params );

                                                        $connector              = $this->gui->getConnector();
                                                        $response               = $connector->post( $scope, $query );
                                                        $responseObject = json_decode( $response );
                                                        /*
                                                         if( $responseObject->success == true && $room->getSetting( 'enable_history' ) )
                                                         {
                                                         $room->addHistoryEntry( $message, $recipient, $publicMessage );
                                                         }
                                                         */
                                                        echo $response;
                                                        exit;
        }

        public function deliverFile()
        {
                // send file

                echo "hello world";
        }

        private function buildMessage($messageString, $params, ilChatroomUser $chat_user)
        {
                $data = new stdClass();

                $data->user                     = $this->gui->object->getPersonalInformation( $chat_user );
                $data->message          = $messageString;
                $data->timestamp        = date( 'c' );
                $data->type                     = 'message';
                $data->public           = (int)$params['public'];
                $data->recipients       = $params['recipients']; // ? explode(",", $params['recipients']) : array();

                return $data;
        }

        public function checkUploadPath($path)
        {
                $err = false;

                switch( true )
                {
                        case !file_exists( $path ):
                                if(     ! ilUtil::makeDirParents( $path ) )
                                {
                                        $err = true;
                                        $msg = 'Error: Upload path could not be created!';
                                }
                                break;

                        case !is_dir( $path ):
                                $err = true;
                                $msg = 'Error: Upload path is not a directory!';
                                break;
                                        
                        case !is_readable( $path ):
                                $err = true;
                                $msg = 'Error: Upload path is not readable!';
                                break;

                        default:
                }

                if( $err )
                {
                        throw new Exception( $msg );
                }
        }

        public function getUploadPath()
        {
                $path = ilUtil::getDataDir() . "/chatroom/" . $this->gui->object->getId() . "/uploads/";

                return $path;
        }

}

?>