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libnet

    1: /*
    2:  *  $Id: libnet_build_link.c,v 1.1.1.1 2012/02/21 22:14:23 misho Exp $
    3:  *
    4:  *  libnet
    5:  *  libnet_build_link.c - link-layer packet assembler
    6:  *
    7:  *  Copyright (c) 2003 Roberto Larcher <roberto.larcher@libero.it>
    8:  *  Copyright (c) 1998 - 2004 Mike D. Schiffman <mike@infonexus.com>
    9:  *  All rights reserved.
   10:  *
   11:  * Redistribution and use in source and binary forms, with or without
   12:  * modification, are permitted provided that the following conditions
   13:  * are met:
   14:  * 1. Redistributions of source code must retain the above copyright
   15:  *    notice, this list of conditions and the following disclaimer.
   16:  * 2. Redistributions in binary form must reproduce the above copyright
   17:  *    notice, this list of conditions and the following disclaimer in the
   18:  *    documentation and/or other materials provided with the distribution.
   19:  *
   20:  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   21:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   22:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   23:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   24:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   25:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   26:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   27:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   28:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   29:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   30:  * SUCH DAMAGE.
   31:  *
   32:  */
   33: 
   34: #if (HAVE_CONFIG_H)
   35: #include "../include/config.h"
   36: #endif
   37: #if (!(_WIN32) || (__CYGWIN__))
   38: #include "../include/libnet.h"
   39: #else
   40: #include "../include/win32/libnet.h"
   41: #endif
   42: 
   43: libnet_ptag_t
   44: libnet_build_link(u_int8_t *dst, u_int8_t *src, u_int8_t *oui, u_int16_t type,
   45: u_int8_t *payload, u_int32_t payload_s, libnet_t *l, libnet_ptag_t ptag)
   46: 
   47: {
   48: 	u_int8_t org[3] = {0x00, 0x00, 0x00};
   49:     switch (l->link_type)
   50:     {
   51:         /* add FDDI */
   52:         case DLT_EN10MB:
   53:             return (libnet_build_ethernet(dst, src, type, payload, payload_s, l,
   54:                     ptag));
   55:         case DLT_IEEE802:
   56:             return (libnet_build_token_ring(LIBNET_TOKEN_RING_FRAME,
   57:                     LIBNET_TOKEN_RING_LLC_FRAME, dst, src, LIBNET_SAP_SNAP,
   58:                     LIBNET_SAP_SNAP, 0x03, org, type, payload, payload_s,
   59:                     l, ptag));
   60:         default:
   61:             break;
   62:     }
   63:     snprintf(l->err_buf, LIBNET_ERRBUF_SIZE,
   64:             "%s(): linktype %d not supported\n", __func__, l->link_type);
   65:     return (-1);
   66: }
   67: 
   68: libnet_ptag_t
   69: libnet_autobuild_link(u_int8_t *dst, u_int8_t *oui, u_int16_t type, libnet_t *l)
   70: {
   71: 	u_int8_t org[3] = {0x00, 0x00, 0x00};
   72:     switch (l->link_type)
   73:     {
   74:        /* add FDDI */
   75:         case DLT_EN10MB:
   76:             return (libnet_autobuild_ethernet(dst, type, l));
   77:         case DLT_IEEE802:
   78:             return (libnet_autobuild_token_ring(LIBNET_TOKEN_RING_FRAME,
   79:                    LIBNET_TOKEN_RING_LLC_FRAME, dst, LIBNET_SAP_SNAP,
   80:                    LIBNET_SAP_SNAP, 0x03, org, TOKEN_RING_TYPE_IP, l));
   81:         default:
   82:             break;
   83:     }
   84:     snprintf(l->err_buf, LIBNET_ERRBUF_SIZE,
   85:             "%s(): linktype %d not supported\n", __func__, l->link_type);
   86:     return (-1);
   87: }
   88: 
   89: /* EOF */
   90: