/*
                                  NETWOX
                             Network toolbox
                Copyright(c) 1999-2006 Laurent Constantin
                                  -----

  Main server    : http://www.laurentconstantin.com/
  Backup servers : http://go.to/laurentconstantin/
                   http://laurentconstantin.est-la.com/
                   http://laurentconstantin.free.fr/
                   http://membres.lycos.fr/lauconstantin/
  [my current email address is on the web servers]

                                  -----
  This file is part of Netwox.

  Netwox is free software; you can redistribute it and/or
  modify it under the terms of the GNU General Public License
  version 2 as published by the Free Software Foundation.

  Netwox is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  General Public License for more details (http://www.gnu.org/).

------------------------------------------------------------------------
*/

/*-------------------------------------------------------------*/
#include "../../netwox.h"

/*-------------------------------------------------------------*/
netwib_err netwox_pkt_append_smbnaked_msghdr(netwib_uint32 msgsize,
                                             netwib_buf *ppkt)
{
  netwib_data data;

  if (msgsize > 0xFFFFFF) {
    return(NETWIB_ERR_PATOOHIGH);
  }

  netwib_er(netwib_buf_wantspace(ppkt, NETWOX_SMBNAKEDHDR_LEN, &data));
  netwib__data_append_uint32(data, msgsize);
  ppkt->endoffset += NETWOX_SMBNAKEDHDR_LEN;

  return(NETWIB_ERR_OK);
}

/*-------------------------------------------------------------*/
netwib_err netwox_pkt_append_smbnaked(netwox_constsmbnaked *psmbnaked,
                                      netwib_buf *ppkt)
{
  netwib_uint32 msgsize;

  msgsize = netwib__buf_ref_data_size(&psmbnaked->smbpkt);
  netwib_er(netwox_pkt_append_smbnaked_msghdr(msgsize, ppkt));

  netwib_er(netwib_buf_append_buf(&psmbnaked->smbpkt, ppkt));

  return(NETWIB_ERR_OK);
}

/*-------------------------------------------------------------*/
netwib_err netwox_pkt_decode_smbnaked(netwib_constbuf *ppkt,
                                      netwox_smbnaked *psmbnaked,
                                      netwib_uint32 *pskipsize)
{
  netwib_data data;
  netwib_uint32 datasize, size;

  datasize = netwib__buf_ref_data_size(ppkt);
  if (datasize < NETWOX_SMBNAKEDHDR_LEN) {
    return(NETWIB_ERR_DATAMISSING);
  }
  if (pskipsize != NULL) *pskipsize = NETWOX_SMBNAKEDHDR_LEN;
  data = netwib__buf_ref_data_ptr(ppkt);

  netwib__data_decode_uint32(data, size);
  datasize -= NETWOX_SMBNAKEDHDR_LEN;
  if (datasize < size) {
    return(NETWIB_ERR_DATAMISSING);
  }
  if (pskipsize != NULL) *pskipsize = NETWOX_SMBNAKEDHDR_LEN + size;

  netwib_er(netwib_buf_init_ext_arrayfilled(data, size, &psmbnaked->smbpkt));

  return(NETWIB_ERR_OK);
}