2 * Routines for Banyan VINES protocol packet disassembly
4 * $Id: packet-vines.c,v 1.7 1999/07/07 22:51:57 gram Exp $
6 * Don Lafontaine <lafont02@cn.ca>
8 * Ethereal - Network traffic analyzer
9 * By Gerald Combs <gerald@zing.org>
10 * Copyright 1998 Gerald Combs
11 * Joerg Mayer <jmayer@telemation.de>
14 * This program is free software; you can redistribute it and/or
15 * modify it under the terms of the GNU General Public License
16 * as published by the Free Software Foundation; either version 2
17 * of the License, or (at your option) any later version.
19 * This program is distributed in the hope that it will be useful,
20 * but WITHOUT ANY WARRANTY; without even the implied warranty of
21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 * GNU General Public License for more details.
24 * You should have received a copy of the GNU General Public License
25 * along with this program; if not, write to the Free Software
26 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
31 #ifdef HAVE_SYS_TYPES_H
32 #include <sys/types.h>
35 #ifdef HAVE_NETINET_IN_H
36 #include <netinet/in.h>
41 #include "packet-vines.h"
44 /* AFAIK Vines FRP (Fragmentation Protocol) is used on all media except Ethernet
45 * and TR (and probably FDDI) - Fragmentation on these media types is not possible
46 * FIXME: Do we need to use this header with PPP too?
50 dissect_vines_frp(const u_char *pd, int offset, frame_data *fd, proto_tree *tree) {
51 guint8 vines_frp_ctrl, vines_frp_seqno;
52 proto_tree *vines_frp_tree;
54 gchar frp_flags_str[32];
56 /* To do: Check for {cap len,pkt len} < struct len */
57 /* Avoids alignment problems on many architectures. */
58 vines_frp_ctrl = pd[offset];
59 vines_frp_seqno = pd[offset+1];
61 if (check_col(fd, COL_PROTOCOL))
62 col_add_str(fd, COL_PROTOCOL, "Vines FRP");
64 * 1: first fragment of vines packet
65 * 2: last fragment of vines packet
68 switch (vines_frp_ctrl) {
70 strcpy(frp_flags_str, "middle");
73 strcpy(frp_flags_str, "first");
76 strcpy(frp_flags_str, "last");
79 strcpy(frp_flags_str, "only");
82 strcpy(frp_flags_str, "please report: unknown");
87 ti = proto_tree_add_text(tree, offset, 2, "Vines Fragmentation Protocol");
88 vines_frp_tree = proto_item_add_subtree(ti, ETT_VINES_FRP);
89 proto_tree_add_text(vines_frp_tree, offset, 1, "Control Flags: 0x%02x = %s fragment", vines_frp_ctrl, frp_flags_str);
90 proto_tree_add_text(vines_frp_tree, offset + 1, 1, "Sequence Number: 0x%02x", vines_frp_seqno);
93 /* Skip over header */
96 /* Decode the "real" Vines now */
97 dissect_vines(pd, offset, fd, tree);
101 dissect_vines(const u_char *pd, int offset, frame_data *fd, proto_tree *tree)
104 proto_tree *vip_tree;
106 /* gchar tos_str[32]; */
107 int is_broadcast = 0;
110 /* To do: check for runts, errs, etc. */
111 /* Avoids alignment problems on many architectures. */
112 memcpy(&viph, &pd[offset], sizeof(e_vip));
114 viph.vip_chksum = pntohs(&pd[offset]);
115 viph.vip_pktlen = pntohs(&pd[offset+2]);
116 viph.vip_dnet = pntohl(&pd[offset+6]);
117 viph.vip_snet = pntohl(&pd[offset+12]);
118 viph.vip_dsub = pntohs(&pd[offset+10]);
119 viph.vip_ssub = pntohs(&pd[offset+16]);
121 switch (viph.vip_proto) {
123 if (check_col(fd, COL_PROTOCOL))
124 col_add_str(fd, COL_PROTOCOL, "Vines IPC");
125 if (check_col(fd, COL_INFO))
126 col_add_fstr(fd, COL_INFO, "IPC (%02x)", viph.vip_proto);
129 if (check_col(fd, COL_PROTOCOL))
130 col_add_str(fd, COL_PROTOCOL, "Vines SPP");
131 if (check_col(fd, COL_INFO))
132 col_add_fstr(fd, COL_INFO, "SPP (%02x)", viph.vip_proto);
135 if (check_col(fd, COL_PROTOCOL))
136 col_add_str(fd, COL_PROTOCOL, "Vines ARP");
137 if (check_col(fd, COL_INFO))
138 col_add_fstr(fd, COL_INFO, "ARP (%02x)", viph.vip_proto);
141 if (check_col(fd, COL_PROTOCOL))
142 col_add_str(fd, COL_PROTOCOL, "Vines RTP");
143 if (check_col(fd, COL_INFO))
144 col_add_fstr(fd, COL_INFO, "RTP (%02x)", viph.vip_proto);
147 if (check_col(fd, COL_PROTOCOL))
148 col_add_str(fd, COL_PROTOCOL, "Vines ICP");
149 if (check_col(fd, COL_INFO))
150 col_add_fstr(fd, COL_INFO, "ICP (%02x)", viph.vip_proto);
153 if (check_col(fd, COL_PROTOCOL))
154 col_add_str(fd, COL_PROTOCOL, "Vines IP");
155 if (check_col(fd, COL_INFO))
156 col_add_fstr(fd, COL_INFO, "Unknown VIP protocol (%02x)", viph.vip_proto);
159 if (check_col(fd, COL_RES_NET_SRC))
160 col_add_fstr(fd, COL_RES_NET_SRC, "%08x.%04x", viph.vip_snet, viph.vip_ssub);
161 if (check_col(fd, COL_RES_NET_DST))
162 col_add_fstr(fd, COL_RES_NET_DST, "%08x.%04x", viph.vip_dnet, viph.vip_dsub);
164 /* helpers to decode flags */
165 /* FIXME: Not used yet */
166 if ((viph.vip_dnet == 0xffffffff) && (viph.vip_dsub == 0xffff)) {
169 hops = viph.vip_tctl & 0xf;
172 viph.ip_tos = IPTOS_TOS(viph.ip_tos);
176 strcpy(tos_str, "None");
179 strcpy(tos_str, "Minimize delay");
181 case IPTOS_THROUGHPUT:
182 strcpy(tos_str, "Maximize throughput");
184 case IPTOS_RELIABILITY:
185 strcpy(tos_str, "Maximize reliability");
188 strcpy(tos_str, "Minimize cost");
191 strcpy(tos_str, "Unknon. Malformed?");
197 ti = proto_tree_add_text(tree, offset, (viph.vip_pktlen), "Vines IP");
198 vip_tree = proto_item_add_subtree(ti, ETT_VINES);
199 proto_tree_add_text(vip_tree, offset, 2, "Packet checksum: 0x%04x", viph.vip_chksum);
200 proto_tree_add_text(vip_tree, offset + 2, 2, "Packet length: 0x%04x (%d)", viph.vip_pktlen, viph.vip_pktlen);
201 proto_tree_add_text(vip_tree, offset + 4, 1, "Transport control: 0x%02x",
203 proto_tree_add_text(vip_tree, offset + 5, 1, "Protocol: 0x%02x", viph.vip_proto);
208 switch (viph.vip_proto)
211 dissect_vines_spp(pd, offset, fd, tree);
215 #define VINES_VSPP_DATA 1
216 #define VINES_VSPP_ACK 5
217 void dissect_vines_spp(const u_char *pd, int offset, frame_data *fd, proto_tree *tree)
220 proto_tree *vspp_tree;
223 /* To do: check for runts, errs, etc. */
224 /* Avoids alignment problems on many architectures. */
225 memcpy(&viph, &pd[offset], sizeof(e_vspp));
227 viph.vspp_sport = ntohs(viph.vspp_sport);
228 viph.vspp_dport = ntohs(viph.vspp_dport);
229 viph.vspp_lclid = ntohs(viph.vspp_lclid);
230 viph.vspp_rmtid = ntohs(viph.vspp_rmtid);
232 switch (viph.vspp_pkttype)
234 case VSPP_PKTTYPE_DATA:
235 if (check_col(fd, COL_PROTOCOL))
236 col_add_str(fd, COL_PROTOCOL, "VSPP Data");
238 case VSPP_PKTTYPE_DISC:
239 if (check_col(fd, COL_PROTOCOL))
240 col_add_str(fd, COL_PROTOCOL, "VSPP Disconnect");
242 case VSPP_PKTTYPE_PROBE:
243 if (check_col(fd, COL_PROTOCOL))
244 col_add_str(fd, COL_PROTOCOL, "VSPP Probe");
246 case VSPP_PKTTYPE_ACK:
247 if (check_col(fd, COL_PROTOCOL))
248 col_add_str(fd, COL_PROTOCOL, "VSPP Ack");
251 if (check_col(fd, COL_PROTOCOL))
252 col_add_str(fd, COL_PROTOCOL, "VSPP Unknown");
254 if (check_col(fd, COL_INFO))
255 col_add_fstr(fd, COL_INFO, "NS=%04x NR=%04x Window=%04x RID=%04x LID=%04x D=%04x S=%04x",
256 viph.vspp_seqno, viph.vspp_ack, viph.vspp_win, viph.vspp_rmtid,
257 viph.vspp_lclid, viph.vspp_dport, viph.vspp_sport);
259 iph.ip_tos = IPTOS_TOS(iph.ip_tos);
263 strcpy(tos_str, "None");
266 strcpy(tos_str, "Minimize delay");
268 case IPTOS_THROUGHPUT:
269 strcpy(tos_str, "Maximize throughput");
271 case IPTOS_RELIABILITY:
272 strcpy(tos_str, "Maximize reliability");
275 strcpy(tos_str, "Minimize cost");
278 strcpy(tos_str, "Unknon. Malformed?");
284 ti = proto_tree_add_text(tree, offset, sizeof(viph), "Vines SPP");
285 vspp_tree = proto_item_add_subtree(ti, ETT_VINES_SPP);
286 proto_tree_add_text(vspp_tree, offset, 2, "Source port: 0x%04x", viph.vspp_sport);
287 proto_tree_add_text(vspp_tree, offset+2, 2, "Destination port: 0x%04x", viph.vspp_dport);
288 proto_tree_add_text(vspp_tree, offset+4, 1, "Packet type: 0x%02x", viph.vspp_pkttype);
289 proto_tree_add_text(vspp_tree, offset+5, 1, "Control: 0x%02x", viph.vspp_control);
290 proto_tree_add_text(vspp_tree, offset+6, 2, "Local Connection ID: 0x%04x", viph.vspp_lclid);
291 proto_tree_add_text(vspp_tree, offset+8, 2, "Remote Connection ID: 0x%04x", viph.vspp_rmtid);
292 proto_tree_add_text(vspp_tree, offset+10, 2, "Sequence number: 0x%04x", viph.vspp_seqno);
293 proto_tree_add_text(vspp_tree, offset+12, 2, "Ack number: 0x%04x", viph.vspp_ack);
294 proto_tree_add_text(vspp_tree, offset+14, 2, "Window: 0x%04x", viph.vspp_win);