class.ilObjBlogAccess.php

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<?php

declare(strict_types=1);

class ilObjBlogAccess extends ilObjectAccess
{
    protected ilLanguage $lng;
    protected ilObjUser $user;
    protected ilAccessHandler $access;

    public function __construct()
    {
        global $DIC;

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

    public static function _getCommands(): array
    {
        return array(
            array("permission" => "read", "cmd" => "preview", "lang_var" => "show", "default" => true),
            array("permission" => "write", "cmd" => "render", "lang_var" => "edit"),
            array("permission" => "contribute", "cmd" => "render", "lang_var" => "edit"),
            array("permission" => "write", "cmd" => "edit", "lang_var" => "settings"),
            array("permission" => "write", "cmd" => "export", "lang_var" => "export_html")
        );
    }

    public static function _checkGoto(string $target): bool
    {
        global $DIC;

        $ilAccess = $DIC->access();

        $t_arr = explode("_", $target);

        if (substr($target, -3) === "wsp") {
            return ilSharedResourceGUI::hasAccess((int) $t_arr[1]);
        }

        if ($t_arr[0] !== "blog" || ((int) $t_arr[1]) <= 0) {
            return false;
        }

        // #12648
        if ($ilAccess->checkAccess("read", "", (int) $t_arr[1]) ||
            $ilAccess->checkAccess("visible", "", (int) $t_arr[1])) {
            return true;
        }
        return false;
    }

    public function canBeDelivered(ilWACPath $ilWACPath): bool
    {
        $ilUser = $this->user;
        $ilAccess = $this->access;
        if (preg_match("/\\/blog_([\\d]*)\\//uim", $ilWACPath->getPath(), $results)) {
            $obj_id = $results[1];
            if ($obj_id == "") {
                return false;
            }

            // personal workspace
            $tree = new ilWorkspaceTree(0);
            $node_id = $tree->lookupNodeId((int) $obj_id);
            if ($node_id) {
                $access_handler = new ilWorkspaceAccessHandler($tree);
                if ($access_handler->checkAccessOfUser($tree, $ilUser->getId(), "read", "view", $node_id, "blog")) {
                    return true;
                }
            } // repository (RBAC)
            else {
                $ref_ids = ilObject::_getAllReferences((int) $obj_id);
                foreach ($ref_ids as $ref_id) {
                    if ($ilAccess->checkAccessOfUser(
                        $ilUser->getId(),
                        "read",
                        "view",
                        $ref_id,
                        "blog",
                        (int) $obj_id
                    )) {
                        return true;
                    }
                }
            }
        }

        return false;
    }

    public static function isCommentsExportPossible(int $blog_id): bool
    {
        global $DIC;

        $setting = $DIC->settings();
        $notes = $DIC->notes();
        $privacy = ilPrivacySettings::getInstance();
        if ($setting->get("disable_comments")) {
            return false;
        }
        if (!$privacy->enabledCommentsExport()) {
            return false;
        }
        if (!$notes->domain()->commentsActive($blog_id)) {
            return false;
        }
        return true;
    }

    public function _checkAccess(string $cmd, string $permission, int $ref_id, int $obj_id, ?int $user_id = null): bool
    {
        switch ($permission) {
            case "visible":
            case "read":
                if (self::_isOffline($obj_id) && !$this->access->checkAccessOfUser($user_id, "write", "", $ref_id)) {
                    $this->access->addInfoItem(ilAccessInfo::IL_NO_OBJECT_ACCESS, $this->lng->txt("offline"));
                    return false;
                }
                break;
        }
        return true;
    }

}