2 * Routines for Banyan VINES protocol packet disassembly
4 * $Id: packet-vines.c,v 1.20 2000/11/19 08:54:10 guy 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.
33 #ifdef HAVE_SYS_TYPES_H
34 #include <sys/types.h>
37 #ifdef HAVE_NETINET_IN_H
38 #include <netinet/in.h>
46 #include "packet-vines.h"
47 #include "packet-ip.h"
49 static int proto_vines = -1;
50 static int hf_vines_protocol = -1;
52 static gint ett_vines = -1;
53 static gint ett_vines_frp = -1;
54 static gint ett_vines_spp = -1;
57 static void dissect_vines_arp(const u_char *, int, frame_data *, proto_tree *);
58 static void dissect_vines_icp(const u_char *, int, frame_data *, proto_tree *);
59 static void dissect_vines_ipc(const u_char *, int, frame_data *, proto_tree *);
60 static void dissect_vines_rtp(const u_char *, int, frame_data *, proto_tree *);
62 static void dissect_vines_spp(const u_char *, int, frame_data *, proto_tree *);
63 static void dissect_vines(const u_char *, int, frame_data *, proto_tree *);
66 capture_vines(const u_char *pd, int offset, packet_counts *ld)
71 /* AFAIK Vines FRP (Fragmentation Protocol) is used on all media except Ethernet
72 * and TR (and probably FDDI) - Fragmentation on these media types is not possible
73 * FIXME: Do we need to use this header with PPP too?
76 dissect_vines_frp(const u_char *pd, int offset, frame_data *fd, proto_tree *tree) {
77 guint8 vines_frp_ctrl, vines_frp_seqno;
78 proto_tree *vines_frp_tree;
80 gchar frp_flags_str[32];
82 /* To do: Check for {cap len,pkt len} < struct len */
84 vines_frp_ctrl = pd[offset];
85 vines_frp_seqno = pd[offset+1];
87 if (check_col(fd, COL_PROTOCOL))
88 col_set_str(fd, COL_PROTOCOL, "Vines FRP");
90 * 1: first fragment of vines packet
91 * 2: last fragment of vines packet
94 switch (vines_frp_ctrl) {
96 strcpy(frp_flags_str, "middle");
99 strcpy(frp_flags_str, "first");
102 strcpy(frp_flags_str, "last");
105 strcpy(frp_flags_str, "only");
108 strcpy(frp_flags_str, "please report: unknown");
113 ti = proto_tree_add_text(tree, NullTVB, offset, 2,
114 "Vines Fragmentation Protocol");
115 vines_frp_tree = proto_item_add_subtree(ti, ett_vines_frp);
116 proto_tree_add_text(vines_frp_tree, NullTVB, offset, 1,
117 "Control Flags: 0x%02x = %s fragment",
118 vines_frp_ctrl, frp_flags_str);
119 proto_tree_add_text(vines_frp_tree, NullTVB, offset + 1, 1,
120 "Sequence Number: 0x%02x", vines_frp_seqno);
123 /* Skip over header */
126 /* Decode the "real" Vines now */
127 dissect_vines(pd, offset, fd, tree);
131 vines_addr_to_str(const guint8 *addrp)
133 static gchar str[3][214];
136 if (cur == &str[0][0]) {
138 } else if (cur == &str[1][0]) {
144 sprintf(cur, "%08x.%04x", pntohl(&addrp[0]), pntohs(&addrp[4]));
149 dissect_vines(const u_char *pd, int offset, frame_data *fd, proto_tree *tree) {
151 proto_tree *vip_tree;
153 /* gchar tos_str[32]; */
154 int is_broadcast = 0;
157 OLD_CHECK_DISPLAY_AS_DATA(proto_vines, pd, offset, fd, tree);
159 /* To do: check for runts, errs, etc. */
161 /* Avoids alignment problems on many architectures. */
162 memcpy(&viph, &pd[offset], sizeof(e_vip));
164 viph.vip_chksum = pntohs(&pd[offset]);
165 viph.vip_pktlen = pntohs(&pd[offset+2]);
166 viph.vip_dnet = pntohl(&pd[offset+6]);
167 viph.vip_dsub = pntohs(&pd[offset+10]);
168 viph.vip_snet = pntohl(&pd[offset+12]);
169 viph.vip_ssub = pntohs(&pd[offset+16]);
171 switch (viph.vip_proto) {
173 if (check_col(fd, COL_PROTOCOL))
174 col_set_str(fd, COL_PROTOCOL, "Vines IPC");
175 if (check_col(fd, COL_INFO))
176 col_add_fstr(fd, COL_INFO, "IPC (%02x)", viph.vip_proto);
179 if (check_col(fd, COL_PROTOCOL))
180 col_set_str(fd, COL_PROTOCOL, "Vines SPP");
181 if (check_col(fd, COL_INFO))
182 col_add_fstr(fd, COL_INFO, "SPP (%02x)", viph.vip_proto);
185 if (check_col(fd, COL_PROTOCOL))
186 col_set_str(fd, COL_PROTOCOL, "Vines ARP");
187 if (check_col(fd, COL_INFO))
188 col_add_fstr(fd, COL_INFO, "ARP (%02x)", viph.vip_proto);
191 if (check_col(fd, COL_PROTOCOL))
192 col_set_str(fd, COL_PROTOCOL, "Vines RTP");
193 if (check_col(fd, COL_INFO))
194 col_add_fstr(fd, COL_INFO, "RTP (%02x)", viph.vip_proto);
197 if (check_col(fd, COL_PROTOCOL))
198 col_set_str(fd, COL_PROTOCOL, "Vines ICP");
199 if (check_col(fd, COL_INFO))
200 col_add_fstr(fd, COL_INFO, "ICP (%02x)", viph.vip_proto);
203 if (check_col(fd, COL_PROTOCOL))
204 col_set_str(fd, COL_PROTOCOL, "Vines IP");
205 if (check_col(fd, COL_INFO))
206 col_add_fstr(fd, COL_INFO, "Unknown VIP protocol (%02x)",
210 SET_ADDRESS(&pi.net_src, AT_VINES, VINES_ADDR_LEN, &pd[offset+12]);
211 SET_ADDRESS(&pi.src, AT_VINES, VINES_ADDR_LEN, &pd[offset+12]);
212 SET_ADDRESS(&pi.net_dst, AT_VINES, VINES_ADDR_LEN, &pd[offset+6]);
213 SET_ADDRESS(&pi.dst, AT_VINES, VINES_ADDR_LEN, &pd[offset+6]);
215 /* helpers to decode flags */
216 /* FIXME: Not used yet */
217 if ((viph.vip_dnet == 0xffffffff) && (viph.vip_dsub == 0xffff)) {
220 hops = viph.vip_tctl & 0xf;
223 viph.ip_tos = IPTOS_TOS(viph.ip_tos);
224 switch (viph.ip_tos) {
226 strcpy(tos_str, "None");
229 strcpy(tos_str, "Minimize delay");
231 case IPTOS_THROUGHPUT:
232 strcpy(tos_str, "Maximize throughput");
234 case IPTOS_RELIABILITY:
235 strcpy(tos_str, "Maximize reliability");
238 strcpy(tos_str, "Minimize cost");
241 strcpy(tos_str, "Unknon. Malformed?");
247 ti = proto_tree_add_protocol_format(tree, proto_vines, NullTVB,
248 offset, (viph.vip_pktlen),
250 vip_tree = proto_item_add_subtree(ti, ett_vines);
251 proto_tree_add_text(vip_tree, NullTVB, offset, 2,
252 "Packet checksum: 0x%04x",
254 proto_tree_add_text(vip_tree, NullTVB, offset + 2, 2,
255 "Packet length: 0x%04x (%d)",
256 viph.vip_pktlen, viph.vip_pktlen);
257 proto_tree_add_text(vip_tree, NullTVB, offset + 4, 1,
258 "Transport control: 0x%02x",
260 proto_tree_add_uint(vip_tree, hf_vines_protocol, NullTVB,
263 proto_tree_add_text(vip_tree, NullTVB, offset + 6,
266 vines_addr_to_str(&pd[offset + 6]));
267 proto_tree_add_text(vip_tree, NullTVB, offset + 12,
270 vines_addr_to_str(&pd[offset + 12]));
275 switch (viph.vip_proto) {
277 dissect_vines_spp(pd, offset, fd, tree);
280 old_dissect_data(pd, offset, fd, tree);
285 void dissect_vines_spp(const u_char *pd, int offset, frame_data *fd, proto_tree *tree) {
288 proto_tree *vspp_tree;
291 /* To do: check for runts, errs, etc. */
293 /* Avoids alignment problems on many architectures. */
294 memcpy(&viph, &pd[offset], sizeof(e_vspp));
296 viph.vspp_sport = ntohs(viph.vspp_sport);
297 viph.vspp_dport = ntohs(viph.vspp_dport);
298 viph.vspp_lclid = ntohs(viph.vspp_lclid);
299 viph.vspp_rmtid = ntohs(viph.vspp_rmtid);
301 switch (viph.vspp_pkttype) {
302 case VSPP_PKTTYPE_DATA:
303 if (check_col(fd, COL_PROTOCOL))
304 col_set_str(fd, COL_PROTOCOL, "VSPP Data");
306 case VSPP_PKTTYPE_DISC:
307 if (check_col(fd, COL_PROTOCOL))
308 col_set_str(fd, COL_PROTOCOL, "VSPP Disconnect");
310 case VSPP_PKTTYPE_PROBE:
311 if (check_col(fd, COL_PROTOCOL))
312 col_set_str(fd, COL_PROTOCOL, "VSPP Probe");
314 case VSPP_PKTTYPE_ACK:
315 if (check_col(fd, COL_PROTOCOL))
316 col_set_str(fd, COL_PROTOCOL, "VSPP Ack");
319 if (check_col(fd, COL_PROTOCOL))
320 col_set_str(fd, COL_PROTOCOL, "VSPP Unknown");
323 if (check_col(fd, COL_INFO))
324 col_add_fstr(fd, COL_INFO,
325 "NS=%04x NR=%04x Window=%04x RID=%04x LID=%04x D=%04x S=%04x",
326 viph.vspp_seqno, viph.vspp_ack, viph.vspp_win,
327 viph.vspp_rmtid, viph.vspp_lclid, viph.vspp_dport,
331 iph.ip_tos = IPTOS_TOS(iph.ip_tos);
332 switch (iph.ip_tos) {
334 strcpy(tos_str, "None");
337 strcpy(tos_str, "Minimize delay");
339 case IPTOS_THROUGHPUT:
340 strcpy(tos_str, "Maximize throughput");
342 case IPTOS_RELIABILITY:
343 strcpy(tos_str, "Maximize reliability");
346 strcpy(tos_str, "Minimize cost");
349 strcpy(tos_str, "Unknon. Malformed?");
355 ti = proto_tree_add_text(tree, NullTVB, offset, sizeof(viph), "Vines SPP");
356 vspp_tree = proto_item_add_subtree(ti, ett_vines_spp);
357 proto_tree_add_text(vspp_tree, NullTVB, offset, 2,
358 "Source port: 0x%04x", viph.vspp_sport);
359 proto_tree_add_text(vspp_tree, NullTVB, offset+2, 2,
360 "Destination port: 0x%04x",
362 proto_tree_add_text(vspp_tree, NullTVB, offset+4, 1,
363 "Packet type: 0x%02x", viph.vspp_pkttype);
364 proto_tree_add_text(vspp_tree, NullTVB, offset+5, 1,
365 "Control: 0x%02x", viph.vspp_control);
366 proto_tree_add_text(vspp_tree, NullTVB, offset+6, 2,
367 "Local Connection ID: 0x%04x",
369 proto_tree_add_text(vspp_tree, NullTVB, offset+8, 2,
370 "Remote Connection ID: 0x%04x",
372 proto_tree_add_text(vspp_tree, NullTVB, offset+10, 2,
373 "Sequence number: 0x%04x",
375 proto_tree_add_text(vspp_tree, NullTVB, offset+12, 2,
376 "Ack number: 0x%04x", viph.vspp_ack);
377 proto_tree_add_text(vspp_tree, NullTVB, offset+14, 2,
378 "Window: 0x%04x", viph.vspp_win);
380 offset += 16; /* sizeof SPP */
381 old_dissect_data(pd, offset, fd, tree);
385 proto_register_vines(void)
387 static gint *ett[] = {
393 static hf_register_info hf[] = {
394 { &hf_vines_protocol,
395 { "Protocol", "vines.protocol",
396 FT_UINT8, BASE_HEX, NULL, 0x0,
400 proto_vines = proto_register_protocol("Banyan Vines", "vines");
401 proto_register_field_array(proto_vines, hf, array_length(hf));
402 proto_register_subtree_array(ett, array_length(ett));
406 proto_reg_handoff_vines(void)
408 old_dissector_add("ethertype", ETHERTYPE_VINES, dissect_vines);
409 old_dissector_add("ppp.protocol", PPP_VINES, dissect_vines);
410 old_dissector_add("ip.proto", IP_PROTO_VINES, dissect_vines_frp);