cpe-hostname.slax

/*
 * ----------------------------------------------------------------------------
 * Author         : Arnoud Vermeer (adapted from Suresh Palguna Krishnan)
 * Version        : 1.0
 * Last Modified  : 2019-01-30
 * Platform       : EX2300-C-12T
 * Release        : last tested on 18.1
 * Description    :
 *
 *    This file contains a script to set the hostname of the switch to CPE-$SERIAL as part of the ZTP process.
 *
 *    The ZTP process installs the appropriate software version and installs a base configuration file identified int eh DHCP parameters.
 *    The base configuration file should contain the following configuration
 *    The switch will download the script from the URL and run the script after the ZTP process is completed
 *        system { delete: autoinstallation; }
 *        event-options {
 *           generate-event { ztp-lic time-interval 180; }
 *           policy ztp-lic {
 *             events ztp-lic;
 *             then {
 *               execute-commands {
 *                  commands {
 *                    "op url http://192.168.0.1/cpe-hostname.slax";
 *                  }
 *                }
 *             }
 *           }
 *        }
 *
 *
 * ----------------------------------------------------------------------------
 * Copyright (c) 2011-2012  Juniper Networks. All Rights Reserved.
 *
 * YOU MUST ACCEPT THE TERMS OF THIS DISCLAIMER TO USE THIS SOFTWARE
 *
 * JUNIPER IS WILLING TO MAKE THE INCLUDED SCRIPTING SOFTWARE AVAILABLE TO YOU
 * ONLY UPON THE CONDITION THAT YOU ACCEPT ALL OF THE TERMS CONTAINED IN THIS
 * DISCLAIMER. PLEASE READ THE TERMS AND CONDITIONS OF THIS DISCLAIMER
 * CAREFULLY.
 *
 * THE SOFTWARE CONTAINED IN THIS FILE IS PROVIDED "AS IS." JUNIPER MAKES NO
 * WARRANTIES OF ANY KIND WHATSOEVER WITH RESPECT TO SOFTWARE. ALL EXPRESS OR
 * IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, INCLUDING ANY WARRANTY
 * OF NON-INFRINGEMENT OR WARRANTY OF MERCHANTABILITY OR FITNESS FOR A
 * PARTICULAR PURPOSE, ARE HEREBY DISCLAIMED AND EXCLUDED TO THE EXTENT
 * ALLOWED BY APPLICABLE LAW.
 *
 * IN NO EVENT WILL JUNIPER BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR
 * FOR DIRECT, SPECIAL, INDIRECT, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE DAMAGES
 * HOWEVER CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY ARISING OUT OF THE
 * USE OF OR INABILITY TO USE THE SOFTWARE, EVEN IF JUNIPER HAS BEEN ADVISED OF
 * THE POSSIBILITY OF SUCH DAMAGES.
 */


version 1.0;

/* Junos standard namespaces */
ns junos = "http://xml.juniper.net/junos/*/junos";
ns xnm = "http://xml.juniper.net/xnm/1.1/xnm";
ns jcs = "http://xml.juniper.net/junos/commit-scripts/1.0";

/* EXSLT extensions and app specific namespaces */
ns exsl extension = "http://exslt.org/common";
ns func extension = "http://exslt.org/functions";
ns ztp = "http://xml.juniper.net/junos/ztp";

import "/usr/libdata/cscript/import/junos.xsl";



match / {
    <op-script-results> {
        /* Open a connection to the device */
        var $jnx = jcs:open();


        /*Get serial number on current device */
        var $serial = ztp:serial-number( $jnx );
        var $hostname = "CPE-" _ $serial;


        /*** Set the hostname and remove the event-options ***/

        var $load-config-rpc = <load-configuration action = "replace" format = "xml"> {
            <configuration> {
                <system> {
                    <host-name> $hostname;
                }
                <event-options delete="delete">;
            }
        }

        expr ztp:load-config( $jnx, $load-config-rpc );

        expr ztp:save-rescue( $jnx );

        expr ztp:end-script( $jnx );
    }
}


/* ------------------------------------------------- */
/* this function is used get serial number  */
/* ------------------------------------------------- */
<func:function name="ztp:serial-number">
{
    param $jnx;

    var $cmd = <get-chassis-inventory>;
    var $sn = jcs:execute( $jnx, $cmd )//chassis/serial-number;

    <func:result select="$sn">;
}

/* --------------------------------------------------------------------- */
/* this function is used save the configuration to the rescue partition  */
/* --------------------------------------------------------------------- */
<func:function name="ztp:save-rescue">
{
    param $jnx;

    var $cmd = <request-save-rescue-configuration>;
    var $save-rsp = jcs:execute( $jnx, $cmd );

    <func:result select="/null">;
}


/* ----------------------------------------------------------------------------- */
/* this function is used to load/commit changes to the configuration; no locking */
/* ----------------------------------------------------------------------------- */
<func:function name="ztp:load-config">
{
    param $jnx;
    param $load-cmd;

    var $load-rsp = jcs:execute( $jnx, $load-cmd );
    if( $load-rsp//self::xnm:error ) {
        call syslog-messages( $header = "Unable to load configuration", $messages = $load-rsp//self::xnm:error/message );
        <func:result select="$load-rsp//self::xnm:error">;
    }
    else {
        var $commit-rsp = jcs:execute( $jnx, "commit-configuration" );
        if( $commit-rsp//self::xnm:error ) {
            call syslog-messages( $header = "unable to commit configuration", $messages = $commit-rsp//self::xnm:error/message );
            <func:result select="exsl:node-set($commit-rsp//self::xnm:error)">;
        }
        else {
            <func:result select="/null">;
        }
    }
}


/* ------------------------------------------------- */
/* this function is used to terminate script properly  */
/* ------------------------------------------------- */
<func:function name="ztp:end-script">
{
    param $jnx;

    expr jcs:close( $jnx );
    <xsl:message terminate="yes">;

    <func:result select="true()">;
}