/**************************************************************************
 *
 * Copyright (c) 2013 Alcatel-Lucent
 *
 * Alcatel Lucent licenses this file to You under the Apache License,
 * Version 2.0 (the "License"); you may not use this file except in
 * compliance with the License.  A copy of the License is contained the
 * file LICENSE at the top level of this repository.
 * You may also obtain a copy of the License at:
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 **************************************************************************
 *
 * dhcp_03.c:
 *
 * This is the PPA-specific code used for PATHSTAR.  PATHSTAR uses BOOTP
 * and has their own proprietary string in the vendor-specific-area.
 * This code loads that string into the BOOTPVSA shell variable.
 *
 * Original author:     Ed Sutter (ed.sutter@alcatel-lucent.com)
 *
 */

#include "config.h"
#include "cpuio.h"
#include "ether.h"
#include "tfs.h"
#include "tfsprivate.h"
#include "genlib.h"
#include "stddefs.h"

/* ValidDHCPOffer():
   Target issued the DISCOVER, the incoming packet is the server's
   OFFER reply.
*/
ValidDHCPOffer(struct   dhcphdr *dhdr)
{
    return(1);
}

/* buildDhcpHdr():
    Called by dhcpboot.c to allow application-specific header stuff to
    be added to header.  Return 0 if generic stuff in dhcpboot.c is to be
    used; else return 1 and the calling code will assume this function is
    dealing with it (see dhcpboot.c for basic idea).
*/
int
buildDhcpHdr(struct dhcphdr *dhcpdata)
{
    return(0);
}

/* DhcpBootpDone():
    Called at the end of the Bootp or Dhcp transaction.
    Input...
    bootp:  1 if BOOTP; else DHCP.
    dhdr:   pointer to dhcp or bootp header.
    vsize:  size of vendor specific area (for bootp this is fixed at 64,
            but for dhcp it is variable).
*/
void
DhcpBootpDone(int bootp, struct dhcphdr *dhdr, int vsize)
{
    if(bootp) {
        ulong   cookie;
        struct bootphdr *bhdr;
        char    bootpvsa[65], *vp;

        bhdr = (struct bootphdr *)dhdr;
        memcpy(&cookie,bhdr->vsa,4);
        if(cookie != STANDARD_MAGIC_COOKIE) {
            memcpy(bootpvsa,bhdr->vsa,64);
            bootpvsa[64] = 0;
            setenv("BOOTPVSA",bootpvsa);
        }
    }
}

/* DhcpVendorSpecific():
    Process vendor specific stuff within the incoming dhcp header.
*/
void
DhcpVendorSpecific(struct   dhcphdr *dhdr)
{
}

/* printDhcpVSopt():
    Print vendor specific stuff within the incoming dhcp header.
*/
int
printDhcpVSopt(int vsopt, int vsoptlen, char *options)
{
    return(0);
}