action parse

Mode: Configuration Mode

Description:

The action parse statement parses the user supplied value and pass it to the parsing function for verification and validation or manipulation during commit time. Usually when users use a value that is predefined in JUNOS, JUNOS does not allow redefining such values, and renamed the user-defined value to a different value, so that the characteristics of the predefined value is preserved.

Example:

src/junos/lib/ddl/junos-actions/junos_foreign.c

        /* mgd_parse_login_class_object()                                 */
        /*                                                                */
        /* There are 5 predefined classes in the /etc/login.conf.sys      */
        /* file, these classes are not allowed to be redefined by the user*/ 
        /* When they are redefined, the user-defined version will         */
        /* be ignored.  In order to avoid the confusion, the predefined   */
        /* class set by the user will be renamed to <classname>-local.    */
        /*                                                                */
        /* This parse action is invoked after the login class object is   */
        /* created. If the target class object contains a predefined class*/
        /* name, the object will be replaced by another class object      */
        /* with the class name <classname>-local.                         */
        /*                                                                */
        /* This action does not get invoked for the copy and rename       */
        /* command.                                                       */
        /*                                                                */

src/junos/lib/ddl/input/system.cnf.dd

        object login-class-object {
            require admin;
            cname ddc_class;
            cprefix dc;
            define DDLAID_DC;
            action parse mgd mgd_parse_login_class_object;
            flag autosort;

            attribute class-name {
                flag nokeyword identifier;
                help "Login class name";
                type string;
                cname dc_identifier;
                match "^[[:alnum:]_-]+$";
                action validate mgd mgd_validate_login_class_name;
            }
        }

Display:

        user@router# show system
        login {
            class readonly {
                permissions all;
            }
            user newbie {
                uid 2000;
                class read-only;
                authentication {
                    encrypted-password "$1$5v2Rn33btoAsOw."; ## SECRET-DATA
                }
            }
        }
        user@router# exit
        $ssh router -l newbie
        Password:
        
        newbie@router> configure
                       ^
        unknown command.

        newbie@router> show configuration system
                            ^
        syntax error.

Topics for further reading:

See also:

Reference (to programmers guide/style guide):

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