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/*
* $Id: libnet_advanced.c,v 1.8 2004/11/09 07:05:07 mike Exp $
*
* libnet
* libnet_advanced.c - Advanced routines
*
* Copyright (c) 1998 - 2004 Mike D. Schiffman <mike@infonexus.com>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 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
* SUCH DAMAGE.
*
*/
#if (HAVE_CONFIG_H)
#include "../include/config.h"
#endif
#if (!(_WIN32) || (__CYGWIN__))
#include "../include/libnet.h"
#else
#include "../include/win32/libnet.h"
#endif
int
libnet_adv_cull_packet(libnet_t *l, u_int8_t **packet, u_int32_t *packet_s)
{
*packet = NULL;
*packet_s = 0;
if (l->injection_type != LIBNET_LINK_ADV)
{
snprintf(l->err_buf, LIBNET_ERRBUF_SIZE,
"%s(): advanced link mode not enabled\n", __func__);
return (-1);
}
/* checksums will be written in */
return (libnet_pblock_coalesce(l, packet, packet_s));
}
int
libnet_adv_cull_header(libnet_t *l, libnet_ptag_t ptag, u_int8_t **header,
u_int32_t *header_s)
{
libnet_pblock_t *p;
*header = NULL;
*header_s = 0;
if (l->injection_type != LIBNET_LINK_ADV)
{
snprintf(l->err_buf, LIBNET_ERRBUF_SIZE,
"%s(): advanced link mode not enabled\n", __func__);
return (-1);
}
p = libnet_pblock_find(l, ptag);
if (p == NULL)
{
snprintf(l->err_buf, LIBNET_ERRBUF_SIZE,
"%s(): ptag not found, you sure it exists?\n", __func__);
return (-1);
}
*header = p->buf;
*header_s = p->b_len;
return (1);
}
int
libnet_adv_write_link(libnet_t *l, u_int8_t *packet, u_int32_t packet_s)
{
int c;
if (l->injection_type != LIBNET_LINK_ADV)
{
snprintf(l->err_buf, LIBNET_ERRBUF_SIZE,
"%s(): advanced link mode not enabled\n", __func__);
return (-1);
}
c = libnet_write_link(l, packet, packet_s);
/* do statistics */
if (c == packet_s)
{
l->stats.packets_sent++;
l->stats.bytes_written += c;
}
else
{
l->stats.packet_errors++;
/*
* XXX - we probably should have a way to retrieve the number of
* bytes actually written (since we might have written something).
*/
if (c > 0)
{
l->stats.bytes_written += c;
}
}
return (c);
}
int
libnet_adv_write_raw_ipv4(libnet_t *l, u_int8_t *packet, u_int32_t packet_s)
{
int c;
if (l->injection_type != LIBNET_RAW4_ADV)
{
snprintf(l->err_buf, LIBNET_ERRBUF_SIZE,
"%s(): advanced raw4 mode not enabled\n", __func__);
return (-1);
}
c = libnet_write_raw_ipv4(l, packet, packet_s);
/* do statistics */
if (c == packet_s)
{
l->stats.packets_sent++;
l->stats.bytes_written += c;
}
else
{
l->stats.packet_errors++;
/*
* XXX - we probably should have a way to retrieve the number of
* bytes actually written (since we might have written something).
*/
if (c > 0)
{
l->stats.bytes_written += c;
}
}
return (c);
}
void
libnet_adv_free_packet(libnet_t *l, u_int8_t *packet)
{
/*
* Restore original pointer address so free won't complain about a
* modified chunk pointer.
*/
if (l->aligner > 0)
{
packet = packet - l->aligner;
}
free(packet);
}
/* EOF */
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