class.ilObjWikiAccess.php

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

include_once("./Services/Object/classes/class.ilObjectAccess.php");

class ilObjWikiAccess extends ilObjectAccess
{
    protected $user;

    protected $lng;

    protected $rbacsystem;

    protected $access;


    public function __construct()
    {
        global $DIC;

        $this->user = $DIC->user();
        $this->lng = $DIC->language();
        $this->rbacsystem = $DIC->rbac()->system();
        $this->access = $DIC->access();
    }


    public static function _getCommands()
    {
        $commands = array(
            array("permission" => "read", "cmd" => "view", "lang_var" => "show",
                "default" => true),
            array("permission" => "write", "cmd" => "editSettings", "lang_var" => "settings")
        );
        
        return $commands;
    }
    
    public function _checkAccess($a_cmd, $a_permission, $a_ref_id, $a_obj_id, $a_user_id = "")
    {
        $ilUser = $this->user;
        $lng = $this->lng;
        $rbacsystem = $this->rbacsystem;
        $ilAccess = $this->access;

        if ($a_user_id == "") {
            $a_user_id = $ilUser->getId();
        }

        switch ($a_cmd) {
            case "view":

                if (!ilObjWikiAccess::_lookupOnline($a_obj_id)
                    && !$rbacsystem->checkAccessOfUser($a_user_id, 'write', $a_ref_id)) {
                    $ilAccess->addInfoItem(IL_NO_OBJECT_ACCESS, $lng->txt("offline"));
                    return false;
                }
                break;
                
            // for permission query feature
            case "infoScreen":
                if (!ilObjWikiAccess::_lookupOnline($a_obj_id)) {
                    $ilAccess->addInfoItem(IL_NO_OBJECT_ACCESS, $lng->txt("offline"));
                } else {
                    $ilAccess->addInfoItem(IL_STATUS_MESSAGE, $lng->txt("online"));
                }
                break;

        }
        switch ($a_permission) {
            case "read":
            case "visible":
                if (!ilObjWikiAccess::_lookupOnline($a_obj_id) &&
                    (!$rbacsystem->checkAccessOfUser($a_user_id, 'write', $a_ref_id))) {
                    $ilAccess->addInfoItem(IL_NO_OBJECT_ACCESS, $lng->txt("offline"));
                    return false;
                }
                break;
        }

        return true;
    }

    public static function _checkGoto($a_target)
    {
        global $DIC;

        $ilAccess = $DIC->access();
        //      echo "-".$a_target."-"; exit;
        $t_arr = explode("_", $a_target);

        if ($t_arr[0] != "wiki" || (((int) $t_arr[1]) <= 0) && $t_arr[1] != "wpage") {
            return false;
        }
        
        if ($t_arr[1] == "wpage") {
            $wpg_id = (int) $t_arr[2];
            include_once("./Modules/Wiki/classes/class.ilWikiPage.php");
            $w_id = ilWikiPage::lookupWikiId($wpg_id);
            if ((int) $t_arr[3] > 0) {
                $refs = array((int) $t_arr[3]);
            } else {
                $refs = ilObject::_getAllReferences($w_id);
            }
            foreach ($refs as $r) {
                if ($ilAccess->checkAccess("read", "", $r)) {
                    return true;
                }
            }
        } elseif ($ilAccess->checkAccess("read", "", $t_arr[1])) {
            return true;
        }
        return false;
    }
    
    public static function _lookupOnline($a_id)
    {
        global $DIC;

        $ilDB = $DIC->database();

        $q = "SELECT * FROM il_wiki_data WHERE id = " .
            $ilDB->quote($a_id, "integer");
        $wk_set = $ilDB->query($q);
        $wk_rec = $ilDB->fetchAssoc($wk_set);

        return $wk_rec["is_online"];
    }

    public static function _lookupPublicFiles($a_id)
    {
        global $DIC;

        $ilDB = $DIC->database();

        $q = "SELECT * FROM il_wiki_data WHERE id = " .
            $ilDB->quote($a_id, "integer");
        $wk_set = $ilDB->query($q);
        $wk_rec = $ilDB->fetchAssoc($wk_set);

        return $wk_rec["public_files"];
    }
}