* $Id: libnet_build_802.2.c,v 1.21 2005/11/29 21:47:10 carlosc Exp $
* libnet_build_802.2.c - 802.2 packet assembler
* Copyright (c) 1998 - 2004 Mike D. Schiffman <mike@infonexus.com>
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
#include "../include/config.h"
#if (!(_WIN32) || (__CYGWIN__))
#include "../include/libnet.h"
#include "../include/win32/libnet.h"
libnet_build_802_2(u_int8_t dsap
, u_int8_t ssap
, u_int8_t control
,
u_int8_t
*payload
, u_int32_t payload_s
, libnet_t
*l
, libnet_ptag_t ptag
)
struct libnet_802_2_hdr _802_2_hdr
;
n
= LIBNET_802_2_H
+ payload_s
;
* Find the existing protocol block if a ptag is specified, or create
p
= libnet_pblock_probe(l
, ptag
, n
, LIBNET_PBLOCK_802_2_H
);
memset(&_802_2_hdr
, 0, sizeof(_802_2_hdr
));
_802_2_hdr
.llc_dsap
= dsap
;
_802_2_hdr
.llc_ssap
= ssap
;
_802_2_hdr
.llc_control
= control
;
n
= libnet_pblock_append(l
, p
, (u_int8_t
*)&_802_2_hdr
, LIBNET_802_2_H
);
if ((payload
&& !payload_s
) || (!payload
&& payload_s
))
snprintf(l
->err_buf
, LIBNET_ERRBUF_SIZE
,
"%s(): payload inconsistency\n", __func__
);
if (payload
&& payload_s
)
n
= libnet_pblock_append(l
, p
, payload
, payload_s
);
return (ptag
? ptag
: libnet_pblock_update(l
, p
, h
,
libnet_pblock_delete(l
, p
);
libnet_build_802_2snap(u_int8_t dsap
, u_int8_t ssap
, u_int8_t control
, u_int8_t
*oui
,
u_int16_t type
, u_int8_t
*payload
, u_int32_t payload_s
, libnet_t
*l
,
struct libnet_802_2snap_hdr _802_2_hdr
;
n
= LIBNET_802_2SNAP_H
+ payload_s
;
* Find the existing protocol block if a ptag is specified, or create
p
= libnet_pblock_probe(l
, ptag
, n
, LIBNET_PBLOCK_802_2SNAP_H
);
memset(&_802_2_hdr
, 0, sizeof(_802_2_hdr
));
_802_2_hdr
.snap_dsap
= dsap
;
_802_2_hdr
.snap_ssap
= ssap
;
_802_2_hdr
.snap_control
= control
;
memcpy(_802_2_hdr
.snap_oui
, oui
, 3);
_802_2_hdr
.snap_type
= htons(type
);
n
= libnet_pblock_append(l
, p
, (u_int8_t
*)&_802_2_hdr
, LIBNET_802_2SNAP_H
);
if ((payload
&& !payload_s
) || (!payload
&& payload_s
))
snprintf(l
->err_buf
, LIBNET_ERRBUF_SIZE
,
"%s(): payload inconsistency\n", __func__
);
if (payload
&& payload_s
)
n
= libnet_pblock_append(l
, p
, payload
, payload_s
);
return (ptag
? ptag
: libnet_pblock_update(l
, p
, h
,
LIBNET_PBLOCK_802_2SNAP_H
));
libnet_pblock_delete(l
, p
);