Move tcpdump-3.9/ to tcpdump/. No need for a versioned dir.
[dragonfly.git] / contrib / tcpdump / print-egp.c
CommitLineData
c8cf0f94
PA
1/*
2 * Copyright (c) 1991, 1992, 1993, 1994, 1995, 1996
3 * The Regents of the University of California. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms are permitted
6 * provided that the above copyright notice and this paragraph are
7 * duplicated in all such forms and that any documentation,
8 * advertising materials, and other materials related to such
9 * distribution and use acknowledge that the software was developed
10 * by the University of California, Lawrence Berkeley Laboratory,
11 * Berkeley, CA. The name of the University may not be used to
12 * endorse or promote products derived from this software without
13 * specific prior written permission.
14 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
15 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
16 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
17 *
18 * Initial contribution from Jeff Honig (jch@MITCHELL.CIT.CORNELL.EDU).
19 */
20
21#ifndef lint
22static const char rcsid[] _U_ =
23 "@(#) $Header: /tcpdump/master/tcpdump/print-egp.c,v 1.37 2005/01/12 11:19:09 hannes Exp $ (LBL)";
24#endif
25
26#ifdef HAVE_CONFIG_H
27#include "config.h"
28#endif
29
30#include <tcpdump-stdinc.h>
31
32#include <stdio.h>
33
34#include "interface.h"
35#include "addrtoname.h"
36#include "extract.h"
37
38#include "ip.h"
39
40struct egp_packet {
41 u_int8_t egp_version;
42#define EGP_VERSION 2
43 u_int8_t egp_type;
44#define EGPT_ACQUIRE 3
45#define EGPT_REACH 5
46#define EGPT_POLL 2
47#define EGPT_UPDATE 1
48#define EGPT_ERROR 8
49 u_int8_t egp_code;
50#define EGPC_REQUEST 0
51#define EGPC_CONFIRM 1
52#define EGPC_REFUSE 2
53#define EGPC_CEASE 3
54#define EGPC_CEASEACK 4
55#define EGPC_HELLO 0
56#define EGPC_HEARDU 1
57 u_int8_t egp_status;
58#define EGPS_UNSPEC 0
59#define EGPS_ACTIVE 1
60#define EGPS_PASSIVE 2
61#define EGPS_NORES 3
62#define EGPS_ADMIN 4
63#define EGPS_GODOWN 5
64#define EGPS_PARAM 6
65#define EGPS_PROTO 7
66#define EGPS_INDET 0
67#define EGPS_UP 1
68#define EGPS_DOWN 2
69#define EGPS_UNSOL 0x80
70 u_int16_t egp_checksum;
71 u_int16_t egp_as;
72 u_int16_t egp_sequence;
73 union {
74 u_int16_t egpu_hello;
75 u_int8_t egpu_gws[2];
76 u_int16_t egpu_reason;
77#define EGPR_UNSPEC 0
78#define EGPR_BADHEAD 1
79#define EGPR_BADDATA 2
80#define EGPR_NOREACH 3
81#define EGPR_XSPOLL 4
82#define EGPR_NORESP 5
83#define EGPR_UVERSION 6
84 } egp_handg;
85#define egp_hello egp_handg.egpu_hello
86#define egp_intgw egp_handg.egpu_gws[0]
87#define egp_extgw egp_handg.egpu_gws[1]
88#define egp_reason egp_handg.egpu_reason
89 union {
90 u_int16_t egpu_poll;
91 u_int32_t egpu_sourcenet;
92 } egp_pands;
93#define egp_poll egp_pands.egpu_poll
94#define egp_sourcenet egp_pands.egpu_sourcenet
95};
96
97const char *egp_acquire_codes[] = {
98 "request",
99 "confirm",
100 "refuse",
101 "cease",
102 "cease_ack"
103};
104
105const char *egp_acquire_status[] = {
106 "unspecified",
107 "active_mode",
108 "passive_mode",
109 "insufficient_resources",
110 "administratively_prohibited",
111 "going_down",
112 "parameter_violation",
113 "protocol_violation"
114};
115
116const char *egp_reach_codes[] = {
117 "hello",
118 "i-h-u"
119};
120
121const char *egp_status_updown[] = {
122 "indeterminate",
123 "up",
124 "down"
125};
126
127const char *egp_reasons[] = {
128 "unspecified",
129 "bad_EGP_header_format",
130 "bad_EGP_data_field_format",
131 "reachability_info_unavailable",
132 "excessive_polling_rate",
133 "no_response",
134 "unsupported_version"
135};
136
137static void
138egpnrprint(register const struct egp_packet *egp)
139{
140 register const u_int8_t *cp;
141 u_int32_t addr;
142 register u_int32_t net;
143 register u_int netlen;
144 int gateways, distances, networks;
145 int t_gateways;
146 const char *comma;
147
148 addr = egp->egp_sourcenet;
149 if (IN_CLASSA(addr)) {
150 net = addr & IN_CLASSA_NET;
151 netlen = 1;
152 } else if (IN_CLASSB(addr)) {
153 net = addr & IN_CLASSB_NET;
154 netlen = 2;
155 } else if (IN_CLASSC(addr)) {
156 net = addr & IN_CLASSC_NET;
157 netlen = 3;
158 } else {
159 net = 0;
160 netlen = 0;
161 }
162 cp = (u_int8_t *)(egp + 1);
163
164 t_gateways = egp->egp_intgw + egp->egp_extgw;
165 for (gateways = 0; gateways < t_gateways; ++gateways) {
166 /* Pickup host part of gateway address */
167 addr = 0;
168 TCHECK2(cp[0], 4 - netlen);
169 switch (netlen) {
170
171 case 1:
172 addr = *cp++;
173 /* fall through */
174 case 2:
175 addr = (addr << 8) | *cp++;
176 /* fall through */
177 case 3:
178 addr = (addr << 8) | *cp++;
179 }
180 addr |= net;
181 TCHECK2(cp[0], 1);
182 distances = *cp++;
183 printf(" %s %s ",
184 gateways < (int)egp->egp_intgw ? "int" : "ext",
185 ipaddr_string(&addr));
186
187 comma = "";
188 putchar('(');
189 while (--distances >= 0) {
190 TCHECK2(cp[0], 2);
191 printf("%sd%d:", comma, (int)*cp++);
192 comma = ", ";
193 networks = *cp++;
194 while (--networks >= 0) {
195 /* Pickup network number */
196 TCHECK2(cp[0], 1);
197 addr = (u_int32_t)*cp++ << 24;
198 if (IN_CLASSB(addr)) {
199 TCHECK2(cp[0], 1);
200 addr |= (u_int32_t)*cp++ << 16;
201 } else if (!IN_CLASSA(addr)) {
202 TCHECK2(cp[0], 2);
203 addr |= (u_int32_t)*cp++ << 16;
204 addr |= (u_int32_t)*cp++ << 8;
205 }
206 printf(" %s", ipaddr_string(&addr));
207 }
208 }
209 putchar(')');
210 }
211 return;
212trunc:
213 fputs("[|]", stdout);
214}
215
216void
217egp_print(register const u_int8_t *bp, register u_int length)
218{
219 register const struct egp_packet *egp;
220 register int status;
221 register int code;
222 register int type;
223
224 egp = (struct egp_packet *)bp;
225 if (!TTEST2(*egp, length)) {
226 printf("[|egp]");
227 return;
228 }
229 (void)printf("egp: ");
230
231 if (egp->egp_version != EGP_VERSION) {
232 printf("[version %d]", egp->egp_version);
233 return;
234 }
235 printf("as:%d seq:%d", EXTRACT_16BITS(&egp->egp_as), EXTRACT_16BITS(&egp->egp_sequence));
236
237 type = egp->egp_type;
238 code = egp->egp_code;
239 status = egp->egp_status;
240
241 switch (type) {
242 case EGPT_ACQUIRE:
243 printf(" acquire");
244 switch (code) {
245 case EGPC_REQUEST:
246 case EGPC_CONFIRM:
247 printf(" %s", egp_acquire_codes[code]);
248 switch (status) {
249 case EGPS_UNSPEC:
250 case EGPS_ACTIVE:
251 case EGPS_PASSIVE:
252 printf(" %s", egp_acquire_status[status]);
253 break;
254
255 default:
256 printf(" [status %d]", status);
257 break;
258 }
259 printf(" hello:%d poll:%d",
260 EXTRACT_16BITS(&egp->egp_hello),
261 EXTRACT_16BITS(&egp->egp_poll));
262 break;
263
264 case EGPC_REFUSE:
265 case EGPC_CEASE:
266 case EGPC_CEASEACK:
267 printf(" %s", egp_acquire_codes[code]);
268 switch (status ) {
269 case EGPS_UNSPEC:
270 case EGPS_NORES:
271 case EGPS_ADMIN:
272 case EGPS_GODOWN:
273 case EGPS_PARAM:
274 case EGPS_PROTO:
275 printf(" %s", egp_acquire_status[status]);
276 break;
277
278 default:
279 printf("[status %d]", status);
280 break;
281 }
282 break;
283
284 default:
285 printf("[code %d]", code);
286 break;
287 }
288 break;
289
290 case EGPT_REACH:
291 switch (code) {
292
293 case EGPC_HELLO:
294 case EGPC_HEARDU:
295 printf(" %s", egp_reach_codes[code]);
296 if (status <= EGPS_DOWN)
297 printf(" state:%s", egp_status_updown[status]);
298 else
299 printf(" [status %d]", status);
300 break;
301
302 default:
303 printf("[reach code %d]", code);
304 break;
305 }
306 break;
307
308 case EGPT_POLL:
309 printf(" poll");
310 if (egp->egp_status <= EGPS_DOWN)
311 printf(" state:%s", egp_status_updown[status]);
312 else
313 printf(" [status %d]", status);
314 printf(" net:%s", ipaddr_string(&egp->egp_sourcenet));
315 break;
316
317 case EGPT_UPDATE:
318 printf(" update");
319 if (status & EGPS_UNSOL) {
320 status &= ~EGPS_UNSOL;
321 printf(" unsolicited");
322 }
323 if (status <= EGPS_DOWN)
324 printf(" state:%s", egp_status_updown[status]);
325 else
326 printf(" [status %d]", status);
327 printf(" %s int %d ext %d",
328 ipaddr_string(&egp->egp_sourcenet),
329 egp->egp_intgw,
330 egp->egp_extgw);
331 if (vflag)
332 egpnrprint(egp);
333 break;
334
335 case EGPT_ERROR:
336 printf(" error");
337 if (status <= EGPS_DOWN)
338 printf(" state:%s", egp_status_updown[status]);
339 else
340 printf(" [status %d]", status);
341
342 if (EXTRACT_16BITS(&egp->egp_reason) <= EGPR_UVERSION)
343 printf(" %s", egp_reasons[EXTRACT_16BITS(&egp->egp_reason)]);
344 else
345 printf(" [reason %d]", EXTRACT_16BITS(&egp->egp_reason));
346 break;
347
348 default:
349 printf("[type %d]", type);
350 break;
351 }
352}