/* *  libnet *  libnet_build_fddi.c - Fiber Distributed Data Interface packet assembler * *  Copyright (c) 1998 - 2003 Mike D. Schiffman <mike@infonexus.com> *                            Jason Damron      <jsdamron@hushmail.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"
#endiflibnet_ptag_tlibnet_build_fddi(u_int8_t fc, u_int8_t *dst, u_int8_t *src, u_int8_t dsap,                  u_int8_t ssap, u_int8_t cf, u_int8_t *org, u_int16_t type,                  u_int8_t *payload, u_int32_t payload_s, libnet_t *l,                   libnet_ptag_t ptag){    u_int32_t n, h;    u_int16_t protocol_type;    libnet_pblock_t *p;    struct libnet_fddi_hdr fddi_hdr;    if (l == NULL)    {         return (-1);    }     /* sanity check injection type if we're not in advanced mode */    if (l->injection_type != LIBNET_LINK &&            !(((l->injection_type) & LIBNET_ADV_MASK)))    {         snprintf(l->err_buf, LIBNET_ERRBUF_SIZE,            "%s(): called with non-link layer wire injection primitive",                    __func__);        p = NULL;        goto bad;    }    n = LIBNET_FDDI_H + payload_s;    h = 0;     /*     *  Find the existing protocol block if a ptag is specified, or create     *  a new one.     */    p = libnet_pblock_probe(l, ptag, n, LIBNET_PBLOCK_FDDI_H);    if (p == NULL)    {        return (-1);    }	memset(&fddi_hdr, 0, sizeof(fddi_hdr));	fddi_hdr.fddi_frame_control     = fc;             /* Class/Format/Priority */    memcpy(fddi_hdr.fddi_dhost, dst, FDDI_ADDR_LEN);  /* destination fddi address */    memcpy(fddi_hdr.fddi_shost, src, FDDI_ADDR_LEN);  /* source fddi address */    fddi_hdr.fddi_llc_dsap          = dsap;           /* */    fddi_hdr.fddi_llc_ssap          = ssap;           /* */    fddi_hdr.fddi_llc_control_field = cf;             /* Class/Format/Priority */    memcpy(&fddi_hdr.fddi_llc_org_code, org, LIBNET_ORG_CODE_SIZE);     /* Deal with unaligned int16_t for type */    protocol_type = htons(type);    memcpy(&fddi_hdr.fddi_type, &protocol_type, sizeof(int16_t));   /* Protocol Type */    n = libnet_pblock_append(l, p, (u_int8_t *)&fddi_hdr, LIBNET_FDDI_H);    if (n == -1)    {        goto bad;    }     if ((payload && !payload_s) || (!payload && payload_s))    {         snprintf(l->err_buf, LIBNET_ERRBUF_SIZE,			     "%s(): payload inconsistency\n", __func__);        goto bad;    }    if (payload && payload_s)    {        n = libnet_pblock_append(l, p, payload, payload_s);        if (n == -1)        {            goto bad;        }    }     return (ptag ? ptag : libnet_pblock_update(l, p, h, LIBNET_PBLOCK_FDDI_H));bad:    libnet_pblock_delete(l, p);    return (-1);}libnet_ptag_tlibnet_autobuild_fddi(u_int8_t fc, u_int8_t *dst, u_int8_t dsap, u_int8_t ssap,                      u_int8_t cf, u_int8_t *org, u_int16_t type, libnet_t *l){    u_int32_t n, h;    u_int16_t protocol_type;    struct libnet_fddi_addr *src;    libnet_pblock_t *p;    libnet_ptag_t ptag;    struct libnet_fddi_hdr fddi_hdr;    if (l == NULL)    {         return (-1);    }     /* sanity check injection type if we're not in advanced mode */    if (l->injection_type != LIBNET_LINK &&            !(((l->injection_type) & LIBNET_ADV_MASK)))    {         snprintf(l->err_buf, LIBNET_ERRBUF_SIZE,            "%s(): called with non-link layer wire injection primitive",                    __func__);        p = NULL;        goto bad;    }    n = LIBNET_FDDI_H;    h = 0;    ptag = LIBNET_PTAG_INITIALIZER;    /* FDDI and Ethernet have the same address size - so just typecast */    src = (struct libnet_fddi_addr *) libnet_get_hwaddr(l);    if (src == NULL)    {        /* err msg set in libnet_get_hwaddr() */        return (-1);    }    p = libnet_pblock_probe(l, ptag, n, LIBNET_PBLOCK_FDDI_H);    if (p == NULL)    {        return (-1);    }	memset(&fddi_hdr, 0, sizeof(fddi_hdr));	fddi_hdr.fddi_frame_control     = fc;             /* Class/Format/Priority */    memcpy(fddi_hdr.fddi_dhost, dst, FDDI_ADDR_LEN);  /* destination fddi address */    memcpy(fddi_hdr.fddi_shost, src, FDDI_ADDR_LEN);  /* source fddi address */    fddi_hdr.fddi_llc_dsap          = dsap;           /* */    fddi_hdr.fddi_llc_ssap          = ssap;           /* */    fddi_hdr.fddi_llc_control_field = cf;             /* Class/Format/Priority */    memcpy(&fddi_hdr.fddi_llc_org_code, org, LIBNET_ORG_CODE_SIZE);     /* Deal with unaligned int16_t for type */    protocol_type = htons(type);    memcpy(&fddi_hdr.fddi_type, &protocol_type, sizeof(int16_t));   /* Protocol Type */    n = libnet_pblock_append(l, p, (u_int8_t *)&fddi_hdr, LIBNET_FDDI_H);    if (n == -1)    {        goto bad;    }    return (libnet_pblock_update(l, p, h, LIBNET_PBLOCK_FDDI_H));bad:    libnet_pblock_delete(l, p);    return (-1); }/* EOF */