2 * Copyright (c) 2013 The TCPDUMP project
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that: (1) source code
6 * distributions retain the above copyright notice and this paragraph
7 * in its entirety, and (2) distributions including binary code include
8 * the above copyright notice and this paragraph in its entirety in
9 * the documentation or other materials provided with the distribution.
10 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND
11 * WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, WITHOUT
12 * LIMITATION, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
13 * FOR A PARTICULAR PURPOSE.
15 * Original code by Ola Martin Lykkja (ola.lykkja@q-free.com)
18 /* \summary: ISO CALM FAST and ETSI GeoNetworking printer */
24 #include <netdissect-stdinc.h>
26 #include "netdissect.h"
28 #include "addrtoname.h"
32 ETSI TS 102 636-5-1 V1.1.1 (2011-02)
33 Intelligent Transport Systems (ITS); Vehicular Communications; GeoNetworking;
34 Part 5: Transport Protocols; Sub-part 1: Basic Transport Protocol
36 ETSI TS 102 636-4-1 V1.1.1 (2011-06)
37 Intelligent Transport Systems (ITS); Vehicular communications; GeoNetworking;
38 Part 4: Geographical addressing and forwarding for point-to-point and point-to-multipoint communications;
39 Sub-part 1: Media-Independent Functionality
42 #define GEONET_ADDR_LEN 8
44 static const struct tok msg_type_values[] = {
59 print_btp_body(netdissect_options *ndo,
64 const char *msg_type_str;
66 /* Assuming ItsDpuHeader */
69 msg_type_str = tok2str(msg_type_values, "unknown (%u)", msg_type);
71 ND_PRINT((ndo, "; ItsPduHeader v:%d t:%d-%s", version, msg_type, msg_type_str));
75 print_btp(netdissect_options *ndo,
78 uint16_t dest = EXTRACT_16BITS(bp+0);
79 uint16_t src = EXTRACT_16BITS(bp+2);
80 ND_PRINT((ndo, "; BTP Dst:%u Src:%u", dest, src));
84 print_long_pos_vector(netdissect_options *ndo,
89 if (!ND_TTEST2(*bp, GEONET_ADDR_LEN))
91 ND_PRINT((ndo, "GN_ADDR:%s ", linkaddr_string (ndo, bp, 0, GEONET_ADDR_LEN)));
93 if (!ND_TTEST2(*(bp+12), 8))
95 lat = EXTRACT_32BITS(bp+12);
96 ND_PRINT((ndo, "lat:%d ", lat));
97 lon = EXTRACT_32BITS(bp+16);
98 ND_PRINT((ndo, "lon:%d", lon));
104 * This is the top level routine of the printer. 'p' points
105 * to the geonet header of the packet.
108 geonet_print(netdissect_options *ndo, const u_char *bp, u_int length,
109 const struct lladdr_info *src)
115 uint16_t payload_length;
117 const char *next_hdr_txt = "Unknown";
118 const char *hdr_type_txt = "Unknown";
121 ND_PRINT((ndo, "GeoNet "));
123 ND_PRINT((ndo, "src:%s", (src->addr_string)(ndo, src->addr)));
124 ND_PRINT((ndo, "; "));
126 /* Process Common Header */
131 version = bp[0] >> 4;
132 next_hdr = bp[0] & 0x0f;
133 hdr_type = bp[1] >> 4;
134 hdr_subtype = bp[1] & 0x0f;
135 payload_length = EXTRACT_16BITS(bp+4);
139 case 0: next_hdr_txt = "Any"; break;
140 case 1: next_hdr_txt = "BTP-A"; break;
141 case 2: next_hdr_txt = "BTP-B"; break;
142 case 3: next_hdr_txt = "IPv6"; break;
146 case 0: hdr_type_txt = "Any"; break;
147 case 1: hdr_type_txt = "Beacon"; break;
148 case 2: hdr_type_txt = "GeoUnicast"; break;
149 case 3: switch (hdr_subtype) {
150 case 0: hdr_type_txt = "GeoAnycastCircle"; break;
151 case 1: hdr_type_txt = "GeoAnycastRect"; break;
152 case 2: hdr_type_txt = "GeoAnycastElipse"; break;
155 case 4: switch (hdr_subtype) {
156 case 0: hdr_type_txt = "GeoBroadcastCircle"; break;
157 case 1: hdr_type_txt = "GeoBroadcastRect"; break;
158 case 2: hdr_type_txt = "GeoBroadcastElipse"; break;
161 case 5: switch (hdr_subtype) {
162 case 0: hdr_type_txt = "TopoScopeBcast-SH"; break;
163 case 1: hdr_type_txt = "TopoScopeBcast-MH"; break;
166 case 6: switch (hdr_subtype) {
167 case 0: hdr_type_txt = "LocService-Request"; break;
168 case 1: hdr_type_txt = "LocService-Reply"; break;
173 ND_PRINT((ndo, "v:%d ", version));
174 ND_PRINT((ndo, "NH:%d-%s ", next_hdr, next_hdr_txt));
175 ND_PRINT((ndo, "HT:%d-%d-%s ", hdr_type, hdr_subtype, hdr_type_txt));
176 ND_PRINT((ndo, "HopLim:%d ", hop_limit));
177 ND_PRINT((ndo, "Payload:%d ", payload_length));
178 if (print_long_pos_vector(ndo, bp + 8) == -1)
181 /* Skip Common Header */
185 /* Process Extended Headers */
193 case 2: /* GeoUnicast */
195 case 3: switch (hdr_subtype) {
196 case 0: /* GeoAnycastCircle */
198 case 1: /* GeoAnycastRect */
200 case 2: /* GeoAnycastElipse */
204 case 4: switch (hdr_subtype) {
205 case 0: /* GeoBroadcastCircle */
207 case 1: /* GeoBroadcastRect */
209 case 2: /* GeoBroadcastElipse */
213 case 5: switch (hdr_subtype) {
214 case 0: /* TopoScopeBcast-SH */
217 case 1: /* TopoScopeBcast-MH */
222 case 6: switch (hdr_subtype) {
223 case 0: /* LocService-Request */
225 case 1: /* LocService-Reply */
231 /* Skip Extended headers */
233 if (length < (u_int)hdr_size)
235 ND_TCHECK2(*bp, hdr_size);
242 case 2: /* BTP A/B */
251 * XXX - did print_btp_body()
252 * return if length < 2
253 * because this is optional,
254 * or was that just not
255 * reporting genuine errors?
258 print_btp_body(ndo, bp);
266 /* Print user data part */
268 ND_DEFAULTPRINT(bp, length);
272 ND_PRINT((ndo, " Malformed (small) "));
273 /* XXX - print the remaining data as hex? */
277 ND_PRINT((ndo, "[|geonet]"));
283 * c-style: whitesmith