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wireshark/packet-vines.c

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/* packet-vines.c
* Routines for Banyan VINES protocol packet disassembly
*
* $Id: packet-vines.c,v 1.6 1999/03/23 03:14:45 gram Exp $
*
* Don Lafontaine <lafont02@cn.ca>
*
* Ethereal - Network traffic analyzer
* By Gerald Combs <gerald@zing.org>
* Copyright 1998 Gerald Combs
* Joerg Mayer <jmayer@telemation.de>
*
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program 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.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include "config.h"
#ifdef HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
#ifdef HAVE_NETINET_IN_H
#include <netinet/in.h>
#endif
#include <glib.h>
#include "packet.h"
#include "packet-vines.h"
/* AFAIK Vines FRP (Fragmentation Protocol) is used on all media except Ethernet
* and TR (and probably FDDI) - Fragmentation on these media types is not possible
* FIXME: Do we need to use this header with PPP too?
*/
void
dissect_vines_frp(const u_char *pd, int offset, frame_data *fd, proto_tree *tree) {
guint8 vines_frp_ctrl, vines_frp_seqno;
proto_tree *vines_frp_tree;
proto_item *ti;
gchar frp_flags_str[32];
/* To do: Check for {cap len,pkt len} < struct len */
/* Avoids alignment problems on many architectures. */
vines_frp_ctrl = pd[offset];
vines_frp_seqno = pd[offset+1];
if (check_col(fd, COL_PROTOCOL))
col_add_str(fd, COL_PROTOCOL, "Vines FRP");
/*
* 1: first fragment of vines packet
* 2: last fragment of vines packet
* 4 ... 80: unused
*/
switch (vines_frp_ctrl) {
case 0:
strcpy(frp_flags_str, "middle");
break;
case 1:
strcpy(frp_flags_str, "first");
break;
case 2:
strcpy(frp_flags_str, "last");
break;
case 3:
strcpy(frp_flags_str, "only");
break;
default:
strcpy(frp_flags_str, "please report: unknown");
break;
}
if (tree) {
ti = proto_tree_add_item(tree, offset, 2, "Vines Fragmentation Protocol");
vines_frp_tree = proto_tree_new();
proto_item_add_subtree(ti, vines_frp_tree, ETT_VINES_FRP);
proto_tree_add_item(vines_frp_tree, offset, 1, "Control Flags: 0x%02x = %s fragment", vines_frp_ctrl, frp_flags_str);
proto_tree_add_item(vines_frp_tree, offset + 1, 1, "Sequence Number: 0x%02x", vines_frp_seqno);
}
/* Skip over header */
offset += 2;
/* Decode the "real" Vines now */
dissect_vines(pd, offset, fd, tree);
}
void
dissect_vines(const u_char *pd, int offset, frame_data *fd, proto_tree *tree)
{
e_vip viph;
proto_tree *vip_tree;
proto_item *ti;
/* gchar tos_str[32]; */
int is_broadcast = 0;
int hops = 0;
/* To do: check for runts, errs, etc. */
/* Avoids alignment problems on many architectures. */
memcpy(&viph, &pd[offset], sizeof(e_vip));
viph.vip_chksum = pntohs(&pd[offset]);
viph.vip_pktlen = pntohs(&pd[offset+2]);
viph.vip_dnet = pntohl(&pd[offset+6]);
viph.vip_snet = pntohl(&pd[offset+12]);
viph.vip_dsub = pntohs(&pd[offset+10]);
viph.vip_ssub = pntohs(&pd[offset+16]);
switch (viph.vip_proto) {
case VIP_PROTO_IPC:
if (check_col(fd, COL_PROTOCOL))
col_add_str(fd, COL_PROTOCOL, "Vines IPC");
if (check_col(fd, COL_INFO))
col_add_fstr(fd, COL_INFO, "IPC (%02x)", viph.vip_proto);
break;
case VIP_PROTO_SPP:
if (check_col(fd, COL_PROTOCOL))
col_add_str(fd, COL_PROTOCOL, "Vines SPP");
if (check_col(fd, COL_INFO))
col_add_fstr(fd, COL_INFO, "SPP (%02x)", viph.vip_proto);
break;
case VIP_PROTO_ARP:
if (check_col(fd, COL_PROTOCOL))
col_add_str(fd, COL_PROTOCOL, "Vines ARP");
if (check_col(fd, COL_INFO))
col_add_fstr(fd, COL_INFO, "ARP (%02x)", viph.vip_proto);
break;
case VIP_PROTO_RTP:
if (check_col(fd, COL_PROTOCOL))
col_add_str(fd, COL_PROTOCOL, "Vines RTP");
if (check_col(fd, COL_INFO))
col_add_fstr(fd, COL_INFO, "RTP (%02x)", viph.vip_proto);
break;
case VIP_PROTO_ICP:
if (check_col(fd, COL_PROTOCOL))
col_add_str(fd, COL_PROTOCOL, "Vines ICP");
if (check_col(fd, COL_INFO))
col_add_fstr(fd, COL_INFO, "ICP (%02x)", viph.vip_proto);
break;
default:
if (check_col(fd, COL_PROTOCOL))
col_add_str(fd, COL_PROTOCOL, "Vines IP");
if (check_col(fd, COL_INFO))
col_add_fstr(fd, COL_INFO, "Unknown VIP protocol (%02x)", viph.vip_proto);
}
if (check_col(fd, COL_RES_NET_SRC))
col_add_fstr(fd, COL_RES_NET_SRC, "%08x.%04x", viph.vip_snet, viph.vip_ssub);
if (check_col(fd, COL_RES_NET_DST))
col_add_fstr(fd, COL_RES_NET_DST, "%08x.%04x", viph.vip_dnet, viph.vip_dsub);
/* helpers to decode flags */
/* FIXME: Not used yet */
if ((viph.vip_dnet == 0xffffffff) && (viph.vip_dsub == 0xffff)) {
is_broadcast = 1;
}
hops = viph.vip_tctl & 0xf;
/*
viph.ip_tos = IPTOS_TOS(viph.ip_tos);
switch (viph.ip_tos)
{
case IPTOS_NONE:
strcpy(tos_str, "None");
break;
case IPTOS_LOWDELAY:
strcpy(tos_str, "Minimize delay");
break;
case IPTOS_THROUGHPUT:
strcpy(tos_str, "Maximize throughput");
break;
case IPTOS_RELIABILITY:
strcpy(tos_str, "Maximize reliability");
break;
case IPTOS_LOWCOST:
strcpy(tos_str, "Minimize cost");
break;
default:
strcpy(tos_str, "Unknon. Malformed?");
break;
}
*/
if (tree)
{
ti = proto_tree_add_item(tree, offset, (viph.vip_pktlen), "Vines IP");
vip_tree = proto_tree_new();
proto_item_add_subtree(ti, vip_tree, ETT_VINES);
proto_tree_add_item(vip_tree, offset, 2, "Packet checksum: 0x%04x", viph.vip_chksum);
proto_tree_add_item(vip_tree, offset + 2, 2, "Packet length: 0x%04x (%d)", viph.vip_pktlen, viph.vip_pktlen);
proto_tree_add_item(vip_tree, offset + 4, 1, "Transport control: 0x%02x",
viph.vip_tctl);
proto_tree_add_item(vip_tree, offset + 5, 1, "Protocol: 0x%02x", viph.vip_proto);
}
offset += 18;
switch (viph.vip_proto)
{
case VIP_PROTO_SPP:
dissect_vines_spp(pd, offset, fd, tree);
break;
}
}
#define VINES_VSPP_DATA 1
#define VINES_VSPP_ACK 5
void dissect_vines_spp(const u_char *pd, int offset, frame_data *fd, proto_tree *tree)
{
e_vspp viph;
proto_tree *vspp_tree;
proto_item *ti;
/* To do: check for runts, errs, etc. */
/* Avoids alignment problems on many architectures. */
memcpy(&viph, &pd[offset], sizeof(e_vspp));
viph.vspp_sport = ntohs(viph.vspp_sport);
viph.vspp_dport = ntohs(viph.vspp_dport);
viph.vspp_lclid = ntohs(viph.vspp_lclid);
viph.vspp_rmtid = ntohs(viph.vspp_rmtid);
switch (viph.vspp_pkttype)
{
case VSPP_PKTTYPE_DATA:
if (check_col(fd, COL_PROTOCOL))
col_add_str(fd, COL_PROTOCOL, "VSPP Data");
break;
case VSPP_PKTTYPE_DISC:
if (check_col(fd, COL_PROTOCOL))
col_add_str(fd, COL_PROTOCOL, "VSPP Disconnect");
break;
case VSPP_PKTTYPE_PROBE:
if (check_col(fd, COL_PROTOCOL))
col_add_str(fd, COL_PROTOCOL, "VSPP Probe");
break;
case VSPP_PKTTYPE_ACK:
if (check_col(fd, COL_PROTOCOL))
col_add_str(fd, COL_PROTOCOL, "VSPP Ack");
break;
default:
if (check_col(fd, COL_PROTOCOL))
col_add_str(fd, COL_PROTOCOL, "VSPP Unknown");
}
if (check_col(fd, COL_INFO))
col_add_fstr(fd, COL_INFO, "NS=%04x NR=%04x Window=%04x RID=%04x LID=%04x D=%04x S=%04x",
viph.vspp_seqno, viph.vspp_ack, viph.vspp_win, viph.vspp_rmtid,
viph.vspp_lclid, viph.vspp_dport, viph.vspp_sport);
/*
iph.ip_tos = IPTOS_TOS(iph.ip_tos);
switch (iph.ip_tos)
{
case IPTOS_NONE:
strcpy(tos_str, "None");
break;
case IPTOS_LOWDELAY:
strcpy(tos_str, "Minimize delay");
break;
case IPTOS_THROUGHPUT:
strcpy(tos_str, "Maximize throughput");
break;
case IPTOS_RELIABILITY:
strcpy(tos_str, "Maximize reliability");
break;
case IPTOS_LOWCOST:
strcpy(tos_str, "Minimize cost");
break;
default:
strcpy(tos_str, "Unknon. Malformed?");
break;
}
*/
if (tree)
{
ti = proto_tree_add_item(tree, offset, sizeof(viph), "Vines SPP");
vspp_tree = proto_tree_new();
proto_item_add_subtree(ti, vspp_tree, ETT_VINES_SPP);
proto_tree_add_item(vspp_tree, offset, 2, "Source port: 0x%04x", viph.vspp_sport);
proto_tree_add_item(vspp_tree, offset+2, 2, "Destination port: 0x%04x", viph.vspp_dport);
proto_tree_add_item(vspp_tree, offset+4, 1, "Packet type: 0x%02x", viph.vspp_pkttype);
proto_tree_add_item(vspp_tree, offset+5, 1, "Control: 0x%02x", viph.vspp_control);
proto_tree_add_item(vspp_tree, offset+6, 2, "Local Connection ID: 0x%04x", viph.vspp_lclid);
proto_tree_add_item(vspp_tree, offset+8, 2, "Remote Connection ID: 0x%04x", viph.vspp_rmtid);
proto_tree_add_item(vspp_tree, offset+10, 2, "Sequence number: 0x%04x", viph.vspp_seqno);
proto_tree_add_item(vspp_tree, offset+12, 2, "Ack number: 0x%04x", viph.vspp_ack);
proto_tree_add_item(vspp_tree, offset+14, 2, "Window: 0x%04x", viph.vspp_win);
}
}
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