class.ilObjBibliographicAccess.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 ilObjBibliographicAccess extends ilObjectAccess
{

    public static function _getCommands()
    {
        $commands = array(
            array(
                "permission" => "read",
                "cmd" => "render",
                "lang_var" => "show",
                "default" => true,
            ),
            array("permission" => "write", "cmd" => "view", "lang_var" => "edit_content"),
            array("permission" => "write", "cmd" => "edit", "lang_var" => "settings"),
        );

        return $commands;
    }


    public static function _checkGoto($a_target)
    {
        global $DIC;
        $ilAccess = $DIC['ilAccess'];
        $lng = $DIC['lng'];
        $t_arr = explode('_', $a_target);
        if ($t_arr[0] != 'bibl' || ((int) $t_arr[1]) <= 0) {
            return false;
        }
        if ($ilAccess->checkAccess('read', '', $t_arr[1])) {
            return true;
        }

        return false;
    }


    public function _checkAccess($a_cmd, $a_permission, $a_ref_id, $a_obj_id, $a_user_id = "")
    {
        global $DIC;
        $ilUser = $DIC['ilUser'];
        $lng = $DIC['lng'];
        $rbacsystem = $DIC['rbacsystem'];
        $ilAccess = $DIC['ilAccess'];
        if ($a_user_id == "") {
            $a_user_id = $ilUser->getId();
        }

        if (isset($_GET[ilObjBibliographicGUI::P_ENTRY_ID])) {
            if (!self::checkEntryIdMatch($a_obj_id, $_GET[ilObjBibliographicGUI::P_ENTRY_ID])) {
                return false;
            }
        }

        switch ($a_cmd) {
            case "view":
                if (!self::_lookupOnline($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 (!self::_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 (!self::_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;
    }


    private static function checkEntryIdMatch($obj_id, $entry_id)
    {
        $ilBiblEntry = ilBiblEntry::find($entry_id);
        if (is_null($ilBiblEntry)) {
            return false;
        }

        return ($ilBiblEntry->getDataId() == $obj_id);
    }


    public static function _lookupOnline($a_id)
    {
        global $DIC;
        $ilDB = $DIC['ilDB'];
        $q = "SELECT is_online FROM il_bibl_data WHERE id = " . $ilDB->quote($a_id, "integer");
        $bibl_set = $ilDB->query($q);
        $bibl_rec = $ilDB->fetchAssoc($bibl_set);

        return $bibl_rec["is_online"];
    }
}