Bug Summary

File:src/usr.sbin/tcpdump/print-ospf6.c
Warning:line 533, column 4
Value stored to 'sep' is never read

Annotated Source Code

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clang -cc1 -cc1 -triple amd64-unknown-openbsd7.0 -analyze -disable-free -disable-llvm-verifier -discard-value-names -main-file-name print-ospf6.c -analyzer-store=region -analyzer-opt-analyze-nested-blocks -analyzer-checker=core -analyzer-checker=apiModeling -analyzer-checker=unix -analyzer-checker=deadcode -analyzer-checker=security.insecureAPI.UncheckedReturn -analyzer-checker=security.insecureAPI.getpw -analyzer-checker=security.insecureAPI.gets -analyzer-checker=security.insecureAPI.mktemp -analyzer-checker=security.insecureAPI.mkstemp -analyzer-checker=security.insecureAPI.vfork -analyzer-checker=nullability.NullPassedToNonnull -analyzer-checker=nullability.NullReturnedFromNonnull -analyzer-output plist -w -setup-static-analyzer -mrelocation-model pic -pic-level 1 -pic-is-pie -mframe-pointer=all -relaxed-aliasing -fno-rounding-math -mconstructor-aliases -munwind-tables -target-cpu x86-64 -target-feature +retpoline-indirect-calls -target-feature +retpoline-indirect-branches -tune-cpu generic -debugger-tuning=gdb -fcoverage-compilation-dir=/usr/src/usr.sbin/tcpdump/obj -resource-dir /usr/local/lib/clang/13.0.0 -I /usr/src/usr.sbin/tcpdump/../../sbin/pfctl -I /usr/src/usr.sbin/tcpdump/../hostapd -I /usr/src/usr.sbin/tcpdump/../../lib/libpcap -D CSLIP -D PPP -D HAVE_FDDI -D ETHER_SERVICE -D HAVE_ETHER_NTOHOST -D INET6 -I /usr/src/usr.sbin/tcpdump/../../sbin/pfctl -D FAKE_PF_KERNEL -internal-isystem /usr/local/lib/clang/13.0.0/include -internal-externc-isystem /usr/include -O2 -fdebug-compilation-dir=/usr/src/usr.sbin/tcpdump/obj -ferror-limit 19 -fwrapv -D_RET_PROTECTOR -ret-protector -fgnuc-version=4.2.1 -vectorize-loops -vectorize-slp -fno-builtin-malloc -fno-builtin-calloc -fno-builtin-realloc -fno-builtin-valloc -fno-builtin-free -fno-builtin-strdup -fno-builtin-strndup -analyzer-output=html -faddrsig -D__GCC_HAVE_DWARF2_CFI_ASM=1 -o /home/ben/Projects/vmm/scan-build/2022-01-12-194120-40624-1 -x c /usr/src/usr.sbin/tcpdump/print-ospf6.c
1/* $OpenBSD: print-ospf6.c,v 1.11 2020/01/24 22:46:37 procter Exp $ */
2
3
4/*
5 * Copyright (c) 1992, 1993, 1994, 1995, 1996, 1997
6 * The Regents of the University of California. All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that: (1) source code distributions
10 * retain the above copyright notice and this paragraph in its entirety, (2)
11 * distributions including binary code include the above copyright notice and
12 * this paragraph in its entirety in the documentation or other materials
13 * provided with the distribution, and (3) all advertising materials mentioning
14 * features or use of this software display the following acknowledgement:
15 * ``This product includes software developed by the University of California,
16 * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
17 * the University nor the names of its contributors may be used to endorse
18 * or promote products derived from this software without specific prior
19 * written permission.
20 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
21 * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
22 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
23 *
24 * OSPF support contributed by Jeffrey Honig (jch@mitchell.cit.cornell.edu)
25 */
26
27#include <sys/time.h>
28#include <sys/socket.h>
29
30#include <netinet/in.h>
31#include <netinet/ip.h>
32#include <netinet/ip_var.h>
33
34#include <ctype.h>
35#include <stdio.h>
36#include <string.h>
37
38#include "interface.h"
39#include "addrtoname.h"
40
41#include "ospf6.h"
42
43struct bits {
44 u_int32_t bit;
45 const char *str;
46};
47
48static const struct bits ospf6_option_bits[] = {
49 { OSPF6_OPTION_V60x01, "V6" },
50 { OSPF6_OPTION_E0x02, "E" },
51 { OSPF6_OPTION_MC0x04, "MC" },
52 { OSPF6_OPTION_N0x08, "N" },
53 { OSPF6_OPTION_R0x10, "R" },
54 { OSPF6_OPTION_DC0x20, "DC" },
55 { 0, NULL((void *)0) }
56};
57
58static const struct bits ospf6_rla_flag_bits[] = {
59 { RLA_FLAG_B0x01, "B" },
60 { RLA_FLAG_E0x02, "E" },
61 { RLA_FLAG_V0x04, "V" },
62 { RLA_FLAG_W0x08, "W" },
63 { 0, NULL((void *)0) }
64};
65
66static struct tok type2str[] = {
67 { OSPF_TYPE_UMD0, "umd" },
68 { OSPF_TYPE_HELLO1, "hello" },
69 { OSPF_TYPE_DB2, "dd" },
70 { OSPF_TYPE_LSR3, "ls_req" },
71 { OSPF_TYPE_LSU4, "ls_upd" },
72 { OSPF_TYPE_LSA5, "ls_ack" },
73 { 0, NULL((void *)0) }
74};
75
76static char tstr[] = " [|ospf]";
77
78/* Forwards */
79static inline void ospf6_print_seqage(u_int32_t, time_t);
80static inline void ospf6_print_bits(const struct bits *, u_char);
81static void ospf6_print_ls_type(u_int, const rtrid_t *,
82 const rtrid_t *, const char *);
83static int ospf6_print_lshdr(const struct lsa_hdr *);
84static int ospf6_print_lsa(const struct lsa *);
85static int ospf6_decode_v3(const struct ospf6hdr *, const u_char *);
86
87static inline void
88ospf6_print_seqage(u_int32_t seq, time_t us)
89{
90 time_t sec = us % 60;
91 time_t mins = (us / 60) % 60;
92 time_t hour = us / 3600;
93
94 printf(" S %X age ", seq);
95 if (hour)
96 printf("%u:%02u:%02u",
97 (u_int32_t) hour, (u_int32_t) mins, (u_int32_t) sec);
98 else if (mins)
99 printf("%u:%02u", (u_int32_t) mins, (u_int32_t) sec);
100 else
101 printf("%u", (u_int32_t) sec);
102}
103
104
105static inline void
106ospf6_print_bits(const struct bits *bp, u_char options)
107{
108 char sep = ' ';
109
110 do {
111 if (options & bp->bit) {
112 printf("%c%s", sep, bp->str);
113 sep = '/';
114 }
115 } while ((++bp)->bit);
116}
117
118static void
119ospf6_print_ls_type(u_int ls_type, const rtrid_t *ls_stateid,
120 const rtrid_t *ls_router, const char *fmt)
121{
122 char *scope;
123
124 switch (ls_type & LS_SCOPE_MASK0x6000) {
125 case LS_SCOPE_LINKLOCAL0x0000:
126 scope = "linklocal-";
127 break;
128 case LS_SCOPE_AREA0x2000:
129 scope = "area-";
130 break;
131 case LS_SCOPE_AS0x4000:
132 scope = "AS-";
133 break;
134 default:
135 scope = "";
136 break;
137 }
138
139 switch (ls_type & LS_TYPE_MASK0x1fff) {
140 case LS_TYPE_ROUTER1:
141 printf(" %srtr %s", scope, ipaddr_string(ls_router)getname((const u_char *)(ls_router)));
142 break;
143
144 case LS_TYPE_NETWORK2:
145 printf(" %snet dr %s if %s", scope,
146 ipaddr_string(ls_router)getname((const u_char *)(ls_router)),
147 ipaddr_string(ls_stateid)getname((const u_char *)(ls_stateid)));
148 break;
149
150 case LS_TYPE_INTER_AP3:
151 printf(" %sinter-area-prefix %s abr %s", scope,
152 ipaddr_string(ls_stateid)getname((const u_char *)(ls_stateid)),
153 ipaddr_string(ls_router)getname((const u_char *)(ls_router)));
154 break;
155
156 case LS_TYPE_INTER_AR4:
157 printf(" %sinter-area-router %s rtr %s", scope,
158 ipaddr_string(ls_router)getname((const u_char *)(ls_router)),
159 ipaddr_string(ls_stateid)getname((const u_char *)(ls_stateid)));
160 break;
161
162 case LS_TYPE_ASE5:
163 printf(" %sase %s asbr %s", scope,
164 ipaddr_string(ls_stateid)getname((const u_char *)(ls_stateid)),
165 ipaddr_string(ls_router)getname((const u_char *)(ls_router)));
166 break;
167
168 case LS_TYPE_GROUP6:
169 printf(" %sgroup %s rtr %s", scope,
170 ipaddr_string(ls_stateid)getname((const u_char *)(ls_stateid)),
171 ipaddr_string(ls_router)getname((const u_char *)(ls_router)));
172 break;
173
174 case LS_TYPE_TYPE77:
175 printf(" %stype7 %s rtr %s", scope,
176 ipaddr_string(ls_stateid)getname((const u_char *)(ls_stateid)),
177 ipaddr_string(ls_router)getname((const u_char *)(ls_router)));
178 break;
179
180 case LS_TYPE_LINK8:
181 printf(" %slink %s rtr %s", scope,
182 ipaddr_string(ls_stateid)getname((const u_char *)(ls_stateid)),
183 ipaddr_string(ls_router)getname((const u_char *)(ls_router)));
184 break;
185
186 case LS_TYPE_INTRA_AP9:
187 printf(" %sintra-area-prefix %s rtr %s", scope,
188 ipaddr_string(ls_stateid)getname((const u_char *)(ls_stateid)),
189 ipaddr_string(ls_router)getname((const u_char *)(ls_router)));
190 break;
191
192 default:
193 printf(" %s", scope);
194 printf(fmt, ls_type);
195 break;
196 }
197
198}
199
200static int
201ospf6_print_lshdr(const struct lsa_hdr *lshp)
202{
203
204 TCHECK(lshp->ls_type)if (!(snapend - (sizeof(lshp->ls_type)) <= snapend &&
(const u_char *)&(lshp->ls_type) <= snapend - (sizeof
(lshp->ls_type)))) goto trunc;
205 printf(" {"); /* } (ctags) */
206
207 TCHECK(lshp->ls_seq)if (!(snapend - (sizeof(lshp->ls_seq)) <= snapend &&
(const u_char *)&(lshp->ls_seq) <= snapend - (sizeof
(lshp->ls_seq)))) goto trunc;
208 ospf6_print_seqage(ntohl(lshp->ls_seq)(__uint32_t)(__builtin_constant_p(lshp->ls_seq) ? (__uint32_t
)(((__uint32_t)(lshp->ls_seq) & 0xff) << 24 | ((
__uint32_t)(lshp->ls_seq) & 0xff00) << 8 | ((__uint32_t
)(lshp->ls_seq) & 0xff0000) >> 8 | ((__uint32_t)
(lshp->ls_seq) & 0xff000000) >> 24) : __swap32md
(lshp->ls_seq)), ntohs(lshp->ls_age)(__uint16_t)(__builtin_constant_p(lshp->ls_age) ? (__uint16_t
)(((__uint16_t)(lshp->ls_age) & 0xffU) << 8 | ((
__uint16_t)(lshp->ls_age) & 0xff00U) >> 8) : __swap16md
(lshp->ls_age)));
209 ospf6_print_ls_type(ntohs(lshp->ls_type)(__uint16_t)(__builtin_constant_p(lshp->ls_type) ? (__uint16_t
)(((__uint16_t)(lshp->ls_type) & 0xffU) << 8 | (
(__uint16_t)(lshp->ls_type) & 0xff00U) >> 8) : __swap16md
(lshp->ls_type)), &lshp->ls_stateid,
210 &lshp->ls_router, "ls_type %d");
211
212 return (0);
213trunc:
214 return (1);
215}
216
217static int
218ospf6_print_lsaprefix(const struct lsa_prefix *lsapp)
219{
220 int k;
221 struct in6_addr prefix;
222
223 TCHECK(*lsapp)if (!(snapend - (sizeof(*lsapp)) <= snapend && (const
u_char *)&(*lsapp) <= snapend - (sizeof(*lsapp)))) goto
trunc;
224 k = (lsapp->lsa_p_len + 31) / 32;
225 if (k * 4 > sizeof(struct in6_addr)) {
226 printf("??prefixlen %d??", lsapp->lsa_p_len);
227 goto trunc;
228 }
229 memset(&prefix, 0, sizeof(prefix));
230 memcpy(&prefix, lsapp->lsa_p_prefix, k * 4);
231 printf(" %s/%d", ip6addr_string(&prefix)getname6((const u_char *)(&prefix)),
232 lsapp->lsa_p_len);
233 if (lsapp->lsa_p_opt)
234 printf("(opt=%x)", lsapp->lsa_p_opt);
235 return sizeof(*lsapp) - 4 + k * 4;
236
237trunc:
238 return -1;
239}
240
241
242/*
243 * Print a single link state advertisement. If truncated return 1, else 0.
244 */
245static int
246ospf6_print_lsa(const struct lsa *lsap)
247{
248 const u_char *ls_end;
249 const struct rlalink *rlp;
250#if 0
251 const struct tos_metric *tosp;
252#endif
253 const rtrid_t *ap;
254#if 0
255 const struct aslametric *almp;
256 const struct mcla *mcp;
257#endif
258 const struct llsa *llsap;
259 const struct lsa_prefix *lsapp;
260#if 0
261 const u_int32_t *lp;
262#endif
263 int j, k;
264
265 if (ospf6_print_lshdr(&lsap->ls_hdr))
266 return (1);
267 TCHECK(lsap->ls_hdr.ls_length)if (!(snapend - (sizeof(lsap->ls_hdr.ls_length)) <= snapend
&& (const u_char *)&(lsap->ls_hdr.ls_length) <=
snapend - (sizeof(lsap->ls_hdr.ls_length)))) goto trunc;
268 ls_end = (u_char *)lsap + ntohs(lsap->ls_hdr.ls_length)(__uint16_t)(__builtin_constant_p(lsap->ls_hdr.ls_length) ?
(__uint16_t)(((__uint16_t)(lsap->ls_hdr.ls_length) & 0xffU
) << 8 | ((__uint16_t)(lsap->ls_hdr.ls_length) &
0xff00U) >> 8) : __swap16md(lsap->ls_hdr.ls_length)
);
269 switch (ntohs(lsap->ls_hdr.ls_type)(__uint16_t)(__builtin_constant_p(lsap->ls_hdr.ls_type) ? (
__uint16_t)(((__uint16_t)(lsap->ls_hdr.ls_type) & 0xffU
) << 8 | ((__uint16_t)(lsap->ls_hdr.ls_type) & 0xff00U
) >> 8) : __swap16md(lsap->ls_hdr.ls_type))) {
270 case LS_TYPE_ROUTER1 | LS_SCOPE_AREA0x2000:
271 TCHECK(lsap->lsa_un.un_rla.rla_flags)if (!(snapend - (sizeof(lsap->lsa_un.un_rla.rla_flgandopt.
flg)) <= snapend && (const u_char *)&(lsap->
lsa_un.un_rla.rla_flgandopt.flg) <= snapend - (sizeof(lsap
->lsa_un.un_rla.rla_flgandopt.flg)))) goto trunc;
272 ospf6_print_bits(ospf6_rla_flag_bits,
273 lsap->lsa_un.un_rla.rla_flagsrla_flgandopt.flg);
274 TCHECK(lsap->lsa_un.un_rla.rla_options)if (!(snapend - (sizeof(lsap->lsa_un.un_rla.rla_flgandopt.
opt)) <= snapend && (const u_char *)&(lsap->
lsa_un.un_rla.rla_flgandopt.opt) <= snapend - (sizeof(lsap
->lsa_un.un_rla.rla_flgandopt.opt)))) goto trunc;
275 ospf6_print_bits(ospf6_option_bits,
276 ntohl(lsap->lsa_un.un_rla.rla_options)(__uint32_t)(__builtin_constant_p(lsap->lsa_un.un_rla.rla_flgandopt
.opt) ? (__uint32_t)(((__uint32_t)(lsap->lsa_un.un_rla.rla_flgandopt
.opt) & 0xff) << 24 | ((__uint32_t)(lsap->lsa_un
.un_rla.rla_flgandopt.opt) & 0xff00) << 8 | ((__uint32_t
)(lsap->lsa_un.un_rla.rla_flgandopt.opt) & 0xff0000) >>
8 | ((__uint32_t)(lsap->lsa_un.un_rla.rla_flgandopt.opt) &
0xff000000) >> 24) : __swap32md(lsap->lsa_un.un_rla
.rla_flgandopt.opt)));
277
278 TCHECK(lsap->lsa_un.un_rla.rla_link)if (!(snapend - (sizeof(lsap->lsa_un.un_rla.rla_link)) <=
snapend && (const u_char *)&(lsap->lsa_un.un_rla
.rla_link) <= snapend - (sizeof(lsap->lsa_un.un_rla.rla_link
)))) goto trunc;
279 rlp = lsap->lsa_un.un_rla.rla_link;
280 while (rlp + sizeof(*rlp) <= (struct rlalink *)ls_end) {
281 TCHECK(*rlp)if (!(snapend - (sizeof(*rlp)) <= snapend && (const
u_char *)&(*rlp) <= snapend - (sizeof(*rlp)))) goto trunc;
282 printf(" {"); /* } (ctags) */
283 switch (rlp->link_type) {
284
285 case RLA_TYPE_VIRTUAL4:
286 printf(" virt");
287 /* FALLTHROUGH */
288
289 case RLA_TYPE_ROUTER1:
290 printf(" nbrid %s nbrif %s if %s",
291 ipaddr_string(&rlp->link_nrtid)getname((const u_char *)(&rlp->link_nrtid)),
292 ipaddr_string(&rlp->link_nifid)getname((const u_char *)(&rlp->link_nifid)),
293 ipaddr_string(&rlp->link_ifid)getname((const u_char *)(&rlp->link_ifid)));
294 break;
295
296 case RLA_TYPE_TRANSIT2:
297 printf(" dr %s drif %s if %s",
298 ipaddr_string(&rlp->link_nrtid)getname((const u_char *)(&rlp->link_nrtid)),
299 ipaddr_string(&rlp->link_nifid)getname((const u_char *)(&rlp->link_nifid)),
300 ipaddr_string(&rlp->link_ifid)getname((const u_char *)(&rlp->link_ifid)));
301 break;
302
303 default:
304 /* { (ctags) */
305 printf(" ??RouterLinksType 0x%02x?? }",
306 rlp->link_type);
307 return (0);
308 }
309 printf(" metric %d", ntohs(rlp->link_metric)(__uint16_t)(__builtin_constant_p(rlp->link_metric) ? (__uint16_t
)(((__uint16_t)(rlp->link_metric) & 0xffU) << 8 |
((__uint16_t)(rlp->link_metric) & 0xff00U) >> 8
) : __swap16md(rlp->link_metric)));
310 /* { (ctags) */
311 printf(" }");
312 rlp++;
313 }
314 break;
315
316 case LS_TYPE_NETWORK2 | LS_SCOPE_AREA0x2000:
317 TCHECK(lsap->lsa_un.un_nla.nla_options)if (!(snapend - (sizeof(lsap->lsa_un.un_nla.nla_options)) <=
snapend && (const u_char *)&(lsap->lsa_un.un_nla
.nla_options) <= snapend - (sizeof(lsap->lsa_un.un_nla.
nla_options)))) goto trunc;
318 ospf6_print_bits(ospf6_option_bits,
319 ntohl(lsap->lsa_un.un_nla.nla_options)(__uint32_t)(__builtin_constant_p(lsap->lsa_un.un_nla.nla_options
) ? (__uint32_t)(((__uint32_t)(lsap->lsa_un.un_nla.nla_options
) & 0xff) << 24 | ((__uint32_t)(lsap->lsa_un.un_nla
.nla_options) & 0xff00) << 8 | ((__uint32_t)(lsap->
lsa_un.un_nla.nla_options) & 0xff0000) >> 8 | ((__uint32_t
)(lsap->lsa_un.un_nla.nla_options) & 0xff000000) >>
24) : __swap32md(lsap->lsa_un.un_nla.nla_options)));
320 printf(" rtrs");
321 ap = lsap->lsa_un.un_nla.nla_router;
322 while ((u_char *)ap < ls_end) {
323 TCHECK(*ap)if (!(snapend - (sizeof(*ap)) <= snapend && (const
u_char *)&(*ap) <= snapend - (sizeof(*ap)))) goto trunc;
324 printf(" %s", ipaddr_string(ap)getname((const u_char *)(ap)));
325 ++ap;
326 }
327 break;
328
329 case LS_TYPE_INTER_AP3 | LS_SCOPE_AREA0x2000:
330 TCHECK(lsap->lsa_un.un_inter_ap.inter_ap_metric)if (!(snapend - (sizeof(lsap->lsa_un.un_inter_ap.inter_ap_metric
)) <= snapend && (const u_char *)&(lsap->lsa_un
.un_inter_ap.inter_ap_metric) <= snapend - (sizeof(lsap->
lsa_un.un_inter_ap.inter_ap_metric)))) goto trunc;
331 printf(" metric %u",
332 (u_int32_t)ntohl(lsap->lsa_un.un_inter_ap.inter_ap_metric)(__uint32_t)(__builtin_constant_p(lsap->lsa_un.un_inter_ap
.inter_ap_metric) ? (__uint32_t)(((__uint32_t)(lsap->lsa_un
.un_inter_ap.inter_ap_metric) & 0xff) << 24 | ((__uint32_t
)(lsap->lsa_un.un_inter_ap.inter_ap_metric) & 0xff00) <<
8 | ((__uint32_t)(lsap->lsa_un.un_inter_ap.inter_ap_metric
) & 0xff0000) >> 8 | ((__uint32_t)(lsap->lsa_un.
un_inter_ap.inter_ap_metric) & 0xff000000) >> 24) :
__swap32md(lsap->lsa_un.un_inter_ap.inter_ap_metric)) & SLA_MASK_METRIC0x00ffffff);
333 lsapp = lsap->lsa_un.un_inter_ap.inter_ap_prefix;
334 while (lsapp + sizeof(lsapp) <= (struct lsa_prefix *)ls_end) {
335 k = ospf6_print_lsaprefix(lsapp);
336 if (k < 0)
337 goto trunc;
338 lsapp = (struct lsa_prefix *)(((u_char *)lsapp) + k);
339 }
340 break;
341
342#if 0
343 case LS_TYPE_SUM_ABR:
344 TCHECK(lsap->lsa_un.un_sla.sla_tosmetric)if (!(snapend - (sizeof(lsap->lsa_un.un_sla.sla_tosmetric)
) <= snapend && (const u_char *)&(lsap->lsa_un
.un_sla.sla_tosmetric) <= snapend - (sizeof(lsap->lsa_un
.un_sla.sla_tosmetric)))) goto trunc;
345 lp = lsap->lsa_un.un_sla.sla_tosmetric;
346 while ((u_char *)lp < ls_end) {
347 u_int32_t ul;
348
349 TCHECK(*lp)if (!(snapend - (sizeof(*lp)) <= snapend && (const
u_char *)&(*lp) <= snapend - (sizeof(*lp)))) goto trunc;
350 ul = ntohl(*lp)(__uint32_t)(__builtin_constant_p(*lp) ? (__uint32_t)(((__uint32_t
)(*lp) & 0xff) << 24 | ((__uint32_t)(*lp) & 0xff00
) << 8 | ((__uint32_t)(*lp) & 0xff0000) >> 8 |
((__uint32_t)(*lp) & 0xff000000) >> 24) : __swap32md
(*lp));
351 printf(" tos %d metric %d",
352 (ul & SLA_MASK_TOS0x7f000000) >> SLA_SHIFT_TOS24,
353 ul & SLA_MASK_METRIC0x00ffffff);
354 ++lp;
355 }
356 break;
357
358 case LS_TYPE_ASE5:
359 TCHECK(lsap->lsa_un.un_nla.nla_mask)if (!(snapend - (sizeof(lsap->lsa_un.un_nla.nla_mask)) <=
snapend && (const u_char *)&(lsap->lsa_un.un_nla
.nla_mask) <= snapend - (sizeof(lsap->lsa_un.un_nla.nla_mask
)))) goto trunc;
360 printf(" mask %s",
361 ipaddr_string(&lsap->lsa_un.un_asla.asla_mask)getname((const u_char *)(&lsap->lsa_un.un_asla.asla_mask
)));
362
363 TCHECK(lsap->lsa_un.un_sla.sla_tosmetric)if (!(snapend - (sizeof(lsap->lsa_un.un_sla.sla_tosmetric)
) <= snapend && (const u_char *)&(lsap->lsa_un
.un_sla.sla_tosmetric) <= snapend - (sizeof(lsap->lsa_un
.un_sla.sla_tosmetric)))) goto trunc;
364 almp = lsap->lsa_un.un_asla.asla_metric;
365 while ((u_char *)almp < ls_end) {
366 u_int32_t ul;
367
368 TCHECK(almp->asla_tosmetric)if (!(snapend - (sizeof(almp->asla_tosmetric)) <= snapend
&& (const u_char *)&(almp->asla_tosmetric) <=
snapend - (sizeof(almp->asla_tosmetric)))) goto trunc;
369 ul = ntohl(almp->asla_tosmetric)(__uint32_t)(__builtin_constant_p(almp->asla_tosmetric) ? (
__uint32_t)(((__uint32_t)(almp->asla_tosmetric) & 0xff
) << 24 | ((__uint32_t)(almp->asla_tosmetric) & 0xff00
) << 8 | ((__uint32_t)(almp->asla_tosmetric) & 0xff0000
) >> 8 | ((__uint32_t)(almp->asla_tosmetric) & 0xff000000
) >> 24) : __swap32md(almp->asla_tosmetric));
370 printf(" type %d tos %d metric %d",
371 (ul & ASLA_FLAG_EXTERNAL0x80000000) ? 2 : 1,
372 (ul & ASLA_MASK_TOS0x7f000000) >> ASLA_SHIFT_TOS24,
373 (ul & ASLA_MASK_METRIC0x00ffffff));
374 TCHECK(almp->asla_forward)if (!(snapend - (sizeof(almp->asla_forward)) <= snapend
&& (const u_char *)&(almp->asla_forward) <=
snapend - (sizeof(almp->asla_forward)))) goto trunc;
375 if (almp->asla_forward.s_addr) {
376 printf(" forward %s",
377 ipaddr_string(&almp->asla_forward)getname((const u_char *)(&almp->asla_forward)));
378 }
379 TCHECK(almp->asla_tag)if (!(snapend - (sizeof(almp->asla_tag)) <= snapend &&
(const u_char *)&(almp->asla_tag) <= snapend - (sizeof
(almp->asla_tag)))) goto trunc;
380 if (almp->asla_tag.s_addr) {
381 printf(" tag %s",
382 ipaddr_string(&almp->asla_tag)getname((const u_char *)(&almp->asla_tag)));
383 }
384 ++almp;
385 }
386 break;
387
388 case LS_TYPE_GROUP6:
389 /* Multicast extensions as of 23 July 1991 */
390 mcp = lsap->lsa_un.un_mcla;
391 while ((u_char *)mcp < ls_end) {
392 TCHECK(mcp->mcla_vid)if (!(snapend - (sizeof(mcp->mcla_vid)) <= snapend &&
(const u_char *)&(mcp->mcla_vid) <= snapend - (sizeof
(mcp->mcla_vid)))) goto trunc;
393 switch (ntohl(mcp->mcla_vtype)(__uint32_t)(__builtin_constant_p(mcp->mcla_vtype) ? (__uint32_t
)(((__uint32_t)(mcp->mcla_vtype) & 0xff) << 24 |
((__uint32_t)(mcp->mcla_vtype) & 0xff00) << 8 |
((__uint32_t)(mcp->mcla_vtype) & 0xff0000) >> 8
| ((__uint32_t)(mcp->mcla_vtype) & 0xff000000) >>
24) : __swap32md(mcp->mcla_vtype))) {
394
395 case MCLA_VERTEX_ROUTER1:
396 printf(" rtr rtrid %s",
397 ipaddr_string(&mcp->mcla_vid)getname((const u_char *)(&mcp->mcla_vid)));
398 break;
399
400 case MCLA_VERTEX_NETWORK2:
401 printf(" net dr %s",
402 ipaddr_string(&mcp->mcla_vid)getname((const u_char *)(&mcp->mcla_vid)));
403 break;
404
405 default:
406 printf(" ??VertexType %u??",
407 (u_int32_t)ntohl(mcp->mcla_vtype)(__uint32_t)(__builtin_constant_p(mcp->mcla_vtype) ? (__uint32_t
)(((__uint32_t)(mcp->mcla_vtype) & 0xff) << 24 |
((__uint32_t)(mcp->mcla_vtype) & 0xff00) << 8 |
((__uint32_t)(mcp->mcla_vtype) & 0xff0000) >> 8
| ((__uint32_t)(mcp->mcla_vtype) & 0xff000000) >>
24) : __swap32md(mcp->mcla_vtype)));
408 break;
409 }
410 ++mcp;
411 }
412#endif
413
414 case LS_TYPE_LINK8:
415 /* Link LSA */
416 llsap = &lsap->lsa_un.un_llsa;
417 TCHECK(llsap->llsa_options)if (!(snapend - (sizeof(llsap->llsa_priandopt.opt)) <= snapend
&& (const u_char *)&(llsap->llsa_priandopt.opt
) <= snapend - (sizeof(llsap->llsa_priandopt.opt)))) goto
trunc;
418 ospf6_print_bits(ospf6_option_bits, ntohl(llsap->llsa_options)(__uint32_t)(__builtin_constant_p(llsap->llsa_priandopt.opt
) ? (__uint32_t)(((__uint32_t)(llsap->llsa_priandopt.opt) &
0xff) << 24 | ((__uint32_t)(llsap->llsa_priandopt.opt
) & 0xff00) << 8 | ((__uint32_t)(llsap->llsa_priandopt
.opt) & 0xff0000) >> 8 | ((__uint32_t)(llsap->llsa_priandopt
.opt) & 0xff000000) >> 24) : __swap32md(llsap->llsa_priandopt
.opt)));
419 TCHECK(llsap->llsa_nprefix)if (!(snapend - (sizeof(llsap->llsa_nprefix)) <= snapend
&& (const u_char *)&(llsap->llsa_nprefix) <=
snapend - (sizeof(llsap->llsa_nprefix)))) goto trunc;
420 printf(" pri %d lladdr %s npref %d", llsap->llsa_priorityllsa_priandopt.pri,
421 ip6addr_string(&llsap->llsa_lladdr)getname6((const u_char *)(&llsap->llsa_lladdr)),
422 (u_int32_t)ntohl(llsap->llsa_nprefix)(__uint32_t)(__builtin_constant_p(llsap->llsa_nprefix) ? (
__uint32_t)(((__uint32_t)(llsap->llsa_nprefix) & 0xff)
<< 24 | ((__uint32_t)(llsap->llsa_nprefix) & 0xff00
) << 8 | ((__uint32_t)(llsap->llsa_nprefix) & 0xff0000
) >> 8 | ((__uint32_t)(llsap->llsa_nprefix) & 0xff000000
) >> 24) : __swap32md(llsap->llsa_nprefix)));
423 lsapp = llsap->llsa_prefix;
424 for (j = 0; j < ntohl(llsap->llsa_nprefix)(__uint32_t)(__builtin_constant_p(llsap->llsa_nprefix) ? (
__uint32_t)(((__uint32_t)(llsap->llsa_nprefix) & 0xff)
<< 24 | ((__uint32_t)(llsap->llsa_nprefix) & 0xff00
) << 8 | ((__uint32_t)(llsap->llsa_nprefix) & 0xff0000
) >> 8 | ((__uint32_t)(llsap->llsa_nprefix) & 0xff000000
) >> 24) : __swap32md(llsap->llsa_nprefix)); j++) {
425 k = ospf6_print_lsaprefix(lsapp);
426 if (k < 0)
427 goto trunc;
428 lsapp = (struct lsa_prefix *)(((u_char *)lsapp) + k);
429 }
430 break;
431
432 case LS_TYPE_INTRA_AP9 | LS_SCOPE_AREA0x2000:
433 /* Intra-Area-Prefix LSA */
434 TCHECK(lsap->lsa_un.un_intra_ap.intra_ap_rtid)if (!(snapend - (sizeof(lsap->lsa_un.un_intra_ap.intra_ap_rtid
)) <= snapend && (const u_char *)&(lsap->lsa_un
.un_intra_ap.intra_ap_rtid) <= snapend - (sizeof(lsap->
lsa_un.un_intra_ap.intra_ap_rtid)))) goto trunc;
435 ospf6_print_ls_type(
436 ntohs(lsap->lsa_un.un_intra_ap.intra_ap_lstype)(__uint16_t)(__builtin_constant_p(lsap->lsa_un.un_intra_ap
.intra_ap_lstype) ? (__uint16_t)(((__uint16_t)(lsap->lsa_un
.un_intra_ap.intra_ap_lstype) & 0xffU) << 8 | ((__uint16_t
)(lsap->lsa_un.un_intra_ap.intra_ap_lstype) & 0xff00U)
>> 8) : __swap16md(lsap->lsa_un.un_intra_ap.intra_ap_lstype
)),
437 &lsap->lsa_un.un_intra_ap.intra_ap_lsid,
438 &lsap->lsa_un.un_intra_ap.intra_ap_rtid,
439 "LinkStateType %d");
440 TCHECK(lsap->lsa_un.un_intra_ap.intra_ap_nprefix)if (!(snapend - (sizeof(lsap->lsa_un.un_intra_ap.intra_ap_nprefix
)) <= snapend && (const u_char *)&(lsap->lsa_un
.un_intra_ap.intra_ap_nprefix) <= snapend - (sizeof(lsap->
lsa_un.un_intra_ap.intra_ap_nprefix)))) goto trunc;
441 printf(" npref %d",
442 ntohs(lsap->lsa_un.un_intra_ap.intra_ap_nprefix)(__uint16_t)(__builtin_constant_p(lsap->lsa_un.un_intra_ap
.intra_ap_nprefix) ? (__uint16_t)(((__uint16_t)(lsap->lsa_un
.un_intra_ap.intra_ap_nprefix) & 0xffU) << 8 | ((__uint16_t
)(lsap->lsa_un.un_intra_ap.intra_ap_nprefix) & 0xff00U
) >> 8) : __swap16md(lsap->lsa_un.un_intra_ap.intra_ap_nprefix
)));
443
444 lsapp = lsap->lsa_un.un_intra_ap.intra_ap_prefix;
445 for (j = 0;
446 j < ntohs(lsap->lsa_un.un_intra_ap.intra_ap_nprefix)(__uint16_t)(__builtin_constant_p(lsap->lsa_un.un_intra_ap
.intra_ap_nprefix) ? (__uint16_t)(((__uint16_t)(lsap->lsa_un
.un_intra_ap.intra_ap_nprefix) & 0xffU) << 8 | ((__uint16_t
)(lsap->lsa_un.un_intra_ap.intra_ap_nprefix) & 0xff00U
) >> 8) : __swap16md(lsap->lsa_un.un_intra_ap.intra_ap_nprefix
));
447 j++) {
448 k = ospf6_print_lsaprefix(lsapp);
449 if (k < 0)
450 goto trunc;
451 lsapp = (struct lsa_prefix *)(((u_char *)lsapp) + k);
452 }
453 break;
454
455 default:
456 printf(" ??LinkStateType 0x%04x??",
457 ntohs(lsap->ls_hdr.ls_type)(__uint16_t)(__builtin_constant_p(lsap->ls_hdr.ls_type) ? (
__uint16_t)(((__uint16_t)(lsap->ls_hdr.ls_type) & 0xffU
) << 8 | ((__uint16_t)(lsap->ls_hdr.ls_type) & 0xff00U
) >> 8) : __swap16md(lsap->ls_hdr.ls_type)));
458 }
459
460 /* { (ctags) */
461 printf(" }");
462 return (0);
463trunc:
464 printf(" }");
465 return (1);
466}
467
468static int
469ospf6_decode_v3(const struct ospf6hdr *op, const u_char *dataend)
470{
471 const rtrid_t *ap;
472 const struct lsr *lsrp;
473 const struct lsa_hdr *lshp;
474 const struct lsa *lsap;
475 char sep;
476 int i;
477
478 switch (op->ospf6_type) {
479
480 case OSPF_TYPE_UMD0:
481 /*
482 * Rob Coltun's special monitoring packets;
483 * do nothing
484 */
485 break;
486
487 case OSPF_TYPE_HELLO1:
488 if (vflag) {
489 TCHECK(op->ospf6_hello.hello_deadint)if (!(snapend - (sizeof(op->ospf6_un.un_hello.hello_deadint
)) <= snapend && (const u_char *)&(op->ospf6_un
.un_hello.hello_deadint) <= snapend - (sizeof(op->ospf6_un
.un_hello.hello_deadint)))) goto trunc;
490 ospf6_print_bits(ospf6_option_bits,
491 ntohl(op->ospf6_hello.hello_options)(__uint32_t)(__builtin_constant_p(op->ospf6_un.un_hello.hello_priandopt
.opt) ? (__uint32_t)(((__uint32_t)(op->ospf6_un.un_hello.hello_priandopt
.opt) & 0xff) << 24 | ((__uint32_t)(op->ospf6_un
.un_hello.hello_priandopt.opt) & 0xff00) << 8 | ((__uint32_t
)(op->ospf6_un.un_hello.hello_priandopt.opt) & 0xff0000
) >> 8 | ((__uint32_t)(op->ospf6_un.un_hello.hello_priandopt
.opt) & 0xff000000) >> 24) : __swap32md(op->ospf6_un
.un_hello.hello_priandopt.opt)));
492 printf(" ifid %s pri %d int %d dead %u",
493 ipaddr_string(&op->ospf6_hello.hello_ifid)getname((const u_char *)(&op->ospf6_un.un_hello.hello_ifid
)),
494 op->ospf6_helloospf6_un.un_hello.hello_priorityhello_priandopt.pri,
495 ntohs(op->ospf6_hello.hello_helloint)(__uint16_t)(__builtin_constant_p(op->ospf6_un.un_hello.hello_helloint
) ? (__uint16_t)(((__uint16_t)(op->ospf6_un.un_hello.hello_helloint
) & 0xffU) << 8 | ((__uint16_t)(op->ospf6_un.un_hello
.hello_helloint) & 0xff00U) >> 8) : __swap16md(op->
ospf6_un.un_hello.hello_helloint)),
496 ntohs(op->ospf6_hello.hello_deadint)(__uint16_t)(__builtin_constant_p(op->ospf6_un.un_hello.hello_deadint
) ? (__uint16_t)(((__uint16_t)(op->ospf6_un.un_hello.hello_deadint
) & 0xffU) << 8 | ((__uint16_t)(op->ospf6_un.un_hello
.hello_deadint) & 0xff00U) >> 8) : __swap16md(op->
ospf6_un.un_hello.hello_deadint)));
497 }
498 TCHECK(op->ospf6_hello.hello_dr)if (!(snapend - (sizeof(op->ospf6_un.un_hello.hello_dr)) <=
snapend && (const u_char *)&(op->ospf6_un.un_hello
.hello_dr) <= snapend - (sizeof(op->ospf6_un.un_hello.hello_dr
)))) goto trunc;
499 if (op->ospf6_helloospf6_un.un_hello.hello_dr != 0)
500 printf(" dr %s",
501 ipaddr_string(&op->ospf6_hello.hello_dr)getname((const u_char *)(&op->ospf6_un.un_hello.hello_dr
)));
502 TCHECK(op->ospf6_hello.hello_bdr)if (!(snapend - (sizeof(op->ospf6_un.un_hello.hello_bdr)) <=
snapend && (const u_char *)&(op->ospf6_un.un_hello
.hello_bdr) <= snapend - (sizeof(op->ospf6_un.un_hello.
hello_bdr)))) goto trunc;
503 if (op->ospf6_helloospf6_un.un_hello.hello_bdr != 0)
504 printf(" bdr %s",
505 ipaddr_string(&op->ospf6_hello.hello_bdr)getname((const u_char *)(&op->ospf6_un.un_hello.hello_bdr
)));
506 if (vflag) {
507 printf(" nbrs");
508 ap = op->ospf6_helloospf6_un.un_hello.hello_neighbor;
509 while ((u_char *)ap < dataend) {
510 TCHECK(*ap)if (!(snapend - (sizeof(*ap)) <= snapend && (const
u_char *)&(*ap) <= snapend - (sizeof(*ap)))) goto trunc;
511 printf(" %s", ipaddr_string(ap)getname((const u_char *)(ap)));
512 ++ap;
513 }
514 }
515 break; /* HELLO */
516
517 case OSPF_TYPE_DB2:
518 TCHECK(op->ospf6_db.db_options)if (!(snapend - (sizeof(op->ospf6_un.un_db.db_options)) <=
snapend && (const u_char *)&(op->ospf6_un.un_db
.db_options) <= snapend - (sizeof(op->ospf6_un.un_db.db_options
)))) goto trunc;
519 ospf6_print_bits(ospf6_option_bits,
520 ntohl(op->ospf6_db.db_options)(__uint32_t)(__builtin_constant_p(op->ospf6_un.un_db.db_options
) ? (__uint32_t)(((__uint32_t)(op->ospf6_un.un_db.db_options
) & 0xff) << 24 | ((__uint32_t)(op->ospf6_un.un_db
.db_options) & 0xff00) << 8 | ((__uint32_t)(op->
ospf6_un.un_db.db_options) & 0xff0000) >> 8 | ((__uint32_t
)(op->ospf6_un.un_db.db_options) & 0xff000000) >>
24) : __swap32md(op->ospf6_un.un_db.db_options)));
521 sep = ' ';
522 TCHECK(op->ospf6_db.db_flags)if (!(snapend - (sizeof(op->ospf6_un.un_db.db_flags)) <=
snapend && (const u_char *)&(op->ospf6_un.un_db
.db_flags) <= snapend - (sizeof(op->ospf6_un.un_db.db_flags
)))) goto trunc;
523 if (op->ospf6_dbospf6_un.un_db.db_flags & OSPF6_DB_INIT0x04) {
524 printf("%cI", sep);
525 sep = '/';
526 }
527 if (op->ospf6_dbospf6_un.un_db.db_flags & OSPF6_DB_MORE0x02) {
528 printf("%cM", sep);
529 sep = '/';
530 }
531 if (op->ospf6_dbospf6_un.un_db.db_flags & OSPF6_DB_MASTER0x01) {
532 printf("%cMS", sep);
533 sep = '/';
Value stored to 'sep' is never read
534 }
535 TCHECK(op->ospf6_db.db_seq)if (!(snapend - (sizeof(op->ospf6_un.un_db.db_seq)) <= snapend
&& (const u_char *)&(op->ospf6_un.un_db.db_seq
) <= snapend - (sizeof(op->ospf6_un.un_db.db_seq)))) goto
trunc;
536 printf(" mtu %u S %X", ntohs(op->ospf6_db.db_mtu)(__uint16_t)(__builtin_constant_p(op->ospf6_un.un_db.db_mtu
) ? (__uint16_t)(((__uint16_t)(op->ospf6_un.un_db.db_mtu) &
0xffU) << 8 | ((__uint16_t)(op->ospf6_un.un_db.db_mtu
) & 0xff00U) >> 8) : __swap16md(op->ospf6_un.un_db
.db_mtu)),
537 (u_int32_t)ntohl(op->ospf6_db.db_seq)(__uint32_t)(__builtin_constant_p(op->ospf6_un.un_db.db_seq
) ? (__uint32_t)(((__uint32_t)(op->ospf6_un.un_db.db_seq) &
0xff) << 24 | ((__uint32_t)(op->ospf6_un.un_db.db_seq
) & 0xff00) << 8 | ((__uint32_t)(op->ospf6_un.un_db
.db_seq) & 0xff0000) >> 8 | ((__uint32_t)(op->ospf6_un
.un_db.db_seq) & 0xff000000) >> 24) : __swap32md(op
->ospf6_un.un_db.db_seq)));
538
539 if (vflag) {
540 /* Print all the LS adv's */
541 lshp = op->ospf6_dbospf6_un.un_db.db_lshdr;
542
543 while (!ospf6_print_lshdr(lshp)) {
544 /* { (ctags) */
545 printf(" }");
546 ++lshp;
547 }
548 }
549 break;
550
551 case OSPF_TYPE_LSR3:
552 if (vflag) {
553 lsrp = op->ospf6_lsrospf6_un.un_lsr;
554 while ((u_char *)lsrp < dataend) {
555 TCHECK(*lsrp)if (!(snapend - (sizeof(*lsrp)) <= snapend && (const
u_char *)&(*lsrp) <= snapend - (sizeof(*lsrp)))) goto
trunc;
556 printf(" {"); /* } (ctags) */
557 ospf6_print_ls_type(ntohs(lsrp->ls_type)(__uint16_t)(__builtin_constant_p(lsrp->ls_type) ? (__uint16_t
)(((__uint16_t)(lsrp->ls_type) & 0xffU) << 8 | (
(__uint16_t)(lsrp->ls_type) & 0xff00U) >> 8) : __swap16md
(lsrp->ls_type)),
558 &lsrp->ls_stateid,
559 &lsrp->ls_router,
560 "LinkStateType %d");
561 /* { (ctags) */
562 printf(" }");
563 ++lsrp;
564 }
565 }
566 break;
567
568 case OSPF_TYPE_LSU4:
569 if (vflag) {
570 lsap = op->ospf6_lsuospf6_un.un_lsu.lsu_lsa;
571 TCHECK(op->ospf6_lsu.lsu_count)if (!(snapend - (sizeof(op->ospf6_un.un_lsu.lsu_count)) <=
snapend && (const u_char *)&(op->ospf6_un.un_lsu
.lsu_count) <= snapend - (sizeof(op->ospf6_un.un_lsu.lsu_count
)))) goto trunc;
572 i = ntohl(op->ospf6_lsu.lsu_count)(__uint32_t)(__builtin_constant_p(op->ospf6_un.un_lsu.lsu_count
) ? (__uint32_t)(((__uint32_t)(op->ospf6_un.un_lsu.lsu_count
) & 0xff) << 24 | ((__uint32_t)(op->ospf6_un.un_lsu
.lsu_count) & 0xff00) << 8 | ((__uint32_t)(op->ospf6_un
.un_lsu.lsu_count) & 0xff0000) >> 8 | ((__uint32_t)
(op->ospf6_un.un_lsu.lsu_count) & 0xff000000) >>
24) : __swap32md(op->ospf6_un.un_lsu.lsu_count));
573 while (i--) {
574 if (ospf6_print_lsa(lsap))
575 goto trunc;
576 lsap = (struct lsa *)((u_char *)lsap +
577 ntohs(lsap->ls_hdr.ls_length)(__uint16_t)(__builtin_constant_p(lsap->ls_hdr.ls_length) ?
(__uint16_t)(((__uint16_t)(lsap->ls_hdr.ls_length) & 0xffU
) << 8 | ((__uint16_t)(lsap->ls_hdr.ls_length) &
0xff00U) >> 8) : __swap16md(lsap->ls_hdr.ls_length)
));
578 }
579 }
580 break;
581
582
583 case OSPF_TYPE_LSA5:
584 if (vflag) {
585 lshp = op->ospf6_lsaospf6_un.un_lsa.lsa_lshdr;
586
587 while (!ospf6_print_lshdr(lshp)) {
588 /* { (ctags) */
589 printf(" }");
590 ++lshp;
591 }
592 }
593 break;
594
595 default:
596 printf("v3 type %d", op->ospf6_type);
597 break;
598 }
599 return (0);
600trunc:
601 return (1);
602}
603
604void
605ospf6_print(const u_char *bp, u_int length)
606{
607 const struct ospf6hdr *op;
608 const u_char *dataend;
609 const char *cp;
610
611 op = (struct ospf6hdr *)bp;
612
613 /* If the type is valid translate it, or just print the type */
614 /* value. If it's not valid, say so and return */
615 TCHECK(op->ospf6_type)if (!(snapend - (sizeof(op->ospf6_type)) <= snapend &&
(const u_char *)&(op->ospf6_type) <= snapend - (sizeof
(op->ospf6_type)))) goto trunc;
616 cp = tok2str(type2str, "type%d", op->ospf6_type);
617 printf(" OSPFv%d-%s %d:", op->ospf6_version, cp, length);
618 if (*cp == 't')
619 return;
620
621 TCHECK(op->ospf6_len)if (!(snapend - (sizeof(op->ospf6_len)) <= snapend &&
(const u_char *)&(op->ospf6_len) <= snapend - (sizeof
(op->ospf6_len)))) goto trunc;
622 if (length != ntohs(op->ospf6_len)(__uint16_t)(__builtin_constant_p(op->ospf6_len) ? (__uint16_t
)(((__uint16_t)(op->ospf6_len) & 0xffU) << 8 | (
(__uint16_t)(op->ospf6_len) & 0xff00U) >> 8) : __swap16md
(op->ospf6_len))) {
623 printf(" [len %d]", ntohs(op->ospf6_len)(__uint16_t)(__builtin_constant_p(op->ospf6_len) ? (__uint16_t
)(((__uint16_t)(op->ospf6_len) & 0xffU) << 8 | (
(__uint16_t)(op->ospf6_len) & 0xff00U) >> 8) : __swap16md
(op->ospf6_len)));
624 return;
625 }
626 dataend = bp + length;
627
628 TCHECK(op->ospf6_routerid)if (!(snapend - (sizeof(op->ospf6_routerid)) <= snapend
&& (const u_char *)&(op->ospf6_routerid) <=
snapend - (sizeof(op->ospf6_routerid)))) goto trunc;
629 printf(" rtrid %s", ipaddr_string(&op->ospf6_routerid)getname((const u_char *)(&op->ospf6_routerid)));
630
631 TCHECK(op->ospf6_areaid)if (!(snapend - (sizeof(op->ospf6_areaid)) <= snapend &&
(const u_char *)&(op->ospf6_areaid) <= snapend - (
sizeof(op->ospf6_areaid)))) goto trunc;
632 if (op->ospf6_areaid != 0)
633 printf(" area %s", ipaddr_string(&op->ospf6_areaid)getname((const u_char *)(&op->ospf6_areaid)));
634 else
635 printf(" backbone");
636 TCHECK(op->ospf6_instanceid)if (!(snapend - (sizeof(op->ospf6_instanceid)) <= snapend
&& (const u_char *)&(op->ospf6_instanceid) <=
snapend - (sizeof(op->ospf6_instanceid)))) goto trunc;
637 if (op->ospf6_instanceid)
638 printf(" instance %u", op->ospf6_instanceid);
639
640 /* Do rest according to version. */
641 switch (op->ospf6_version) {
642
643 case 3:
644 /* ospf version 3 */
645 if (ospf6_decode_v3(op, dataend))
646 goto trunc;
647 break;
648
649 default:
650 printf(" ospf [version %d]", op->ospf6_version);
651 break;
652 } /* end switch on version */
653
654 return;
655trunc:
656 printf("%s", tstr);
657}