Bug Summary

File:src/usr.sbin/bgpctl/bgpctl.c
Warning:line 1044, column 3
Use of memory after it is freed

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 bgpctl.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/bgpctl/obj -resource-dir /usr/local/lib/clang/13.0.0 -I /usr/src/usr.sbin/bgpctl -I /usr/src/usr.sbin/bgpctl/../bgpd -internal-isystem /usr/local/lib/clang/13.0.0/include -internal-externc-isystem /usr/include -O2 -fdebug-compilation-dir=/usr/src/usr.sbin/bgpctl/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/bgpctl/bgpctl.c
1/* $OpenBSD: bgpctl.c,v 1.273 2021/08/09 08:24:36 claudio Exp $ */
2
3/*
4 * Copyright (c) 2003 Henning Brauer <henning@openbsd.org>
5 * Copyright (c) 2004-2019 Claudio Jeker <claudio@openbsd.org>
6 * Copyright (c) 2016 Job Snijders <job@instituut.net>
7 * Copyright (c) 2016 Peter Hessler <phessler@openbsd.org>
8 *
9 * Permission to use, copy, modify, and distribute this software for any
10 * purpose with or without fee is hereby granted, provided that the above
11 * copyright notice and this permission notice appear in all copies.
12 *
13 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
14 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
15 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
16 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
17 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
18 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
19 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
20 */
21
22#include <sys/types.h>
23#include <sys/socket.h>
24#include <sys/stat.h>
25#include <sys/un.h>
26
27#include <endian.h>
28#include <err.h>
29#include <errno(*__errno()).h>
30#include <fcntl.h>
31#include <math.h>
32#include <stdio.h>
33#include <stdlib.h>
34#include <string.h>
35#include <time.h>
36#include <unistd.h>
37#include <util.h>
38
39#include "bgpd.h"
40#include "session.h"
41#include "rde.h"
42#include "version.h"
43
44#include "bgpctl.h"
45#include "parser.h"
46#include "mrtparser.h"
47
48int main(int, char *[]);
49int show(struct imsg *, struct parse_result *);
50void send_filterset(struct imsgbuf *, struct filter_set_head *);
51void show_mrt_dump_neighbors(struct mrt_rib *, struct mrt_peer *,
52 void *);
53void show_mrt_dump(struct mrt_rib *, struct mrt_peer *, void *);
54void network_mrt_dump(struct mrt_rib *, struct mrt_peer *, void *);
55void show_mrt_state(struct mrt_bgp_state *, void *);
56void show_mrt_msg(struct mrt_bgp_msg *, void *);
57const char *msg_type(u_int8_t);
58void network_bulk(struct parse_result *);
59int match_aspath(void *, u_int16_t, struct filter_as *);
60
61struct imsgbuf *ibuf;
62struct mrt_parser show_mrt = { show_mrt_dump, show_mrt_state, show_mrt_msg };
63struct mrt_parser net_mrt = { network_mrt_dump, NULL((void*)0), NULL((void*)0) };
64const struct output *output = &show_output;
65int tableid;
66int nodescr;
67
68__dead__attribute__((__noreturn__)) void
69usage(void)
70{
71 extern char *__progname;
72
73 fprintf(stderr(&__sF[2]), "usage: %s [-jnV] [-s socket] command [argument ...]\n",
74 __progname);
75 exit(1);
76}
77
78int
79main(int argc, char *argv[])
80{
81 struct sockaddr_un sun;
82 int fd, n, done, ch, verbose = 0;
83 struct imsg imsg;
84 struct network_config net;
85 struct parse_result *res;
86 struct ctl_neighbor neighbor;
87 struct ctl_show_rib_request ribreq;
88 char *sockname;
89 enum imsg_type type;
90
91 if (pledge("stdio rpath wpath cpath unix inet dns", NULL((void*)0)) == -1)
1
Assuming the condition is false
→
2
←
Taking false branch
→
92 err(1, "pledge");
93
94 tableid = getrtable();
95 if (asprintf(&sockname, "%s.%d", SOCKET_NAME"/var/run/bgpd.sock", tableid) == -1)
3
←
Assuming the condition is false
→
4
←
Taking false branch
→
96 err(1, "asprintf");
97
98 while ((ch = getopt(argc, argv, "jns:V")) != -1) {
5
←
Assuming the condition is false
→
6
←
Loop condition is false. Execution continues on line 118
→
99 switch (ch) {
100 case 'n':
101 if (++nodescr > 1)
102 usage();
103 break;
104 case 'j':
105 output = &json_output;
106 break;
107 case 's':
108 sockname = optarg;
109 break;
110 case 'V':
111 fprintf(stderr(&__sF[2]), "OpenBGPD %s\n", BGPD_VERSION"7.2");
112 return 0;
113 default:
114 usage();
115 /* NOTREACHED */
116 }
117 }
118 argc -= optind;
119 argv += optind;
120
121 if ((res = parse(argc, argv)) == NULL((void*)0))
7
←
Assuming the condition is false
→
8
←
Taking false branch
→
122 exit(1);
123
124 memcpy(&neighbor.addr, &res->peeraddr, sizeof(neighbor.addr));
125 strlcpy(neighbor.descr, res->peerdesc, sizeof(neighbor.descr));
126 neighbor.is_group = res->is_group;
127 strlcpy(neighbor.reason, res->reason, sizeof(neighbor.reason));
128
129 switch (res->action) {
9
←
Control jumps to the 'default' case at line 153
→
130 case SHOW_MRT:
131 if (pledge("stdio", NULL((void*)0)) == -1)
132 err(1, "pledge");
133
134 bzero(&ribreq, sizeof(ribreq));
135 if (res->as.type != AS_UNDEF)
136 ribreq.as = res->as;
137 if (res->addr.aid) {
138 ribreq.prefix = res->addr;
139 ribreq.prefixlen = res->prefixlen;
140 }
141 /* XXX currently no communities support */
142 ribreq.neighbor = neighbor;
143 ribreq.aid = res->aid;
144 ribreq.flags = res->flags;
145 ribreq.validation_state = res->validation_state;
146 show_mrt.arg = &ribreq;
147 if (res->flags & F_CTL_NEIGHBORS0x400000)
148 show_mrt.dump = show_mrt_dump_neighbors;
149 else
150 output->head(res);
151 mrt_parse(res->mrtfd, &show_mrt, 1);
152 exit(0);
153 default:
154 break;
10
←
 Execution continues on line 157
→
155 }
156
157 if (pledge("stdio unix", NULL((void*)0)) == -1)
11
←
Assuming the condition is false
→
12
←
Taking false branch
→
158 err(1, "pledge");
159
160 if ((fd = socket(AF_UNIX1, SOCK_STREAM1, 0)) == -1)
13
←
Assuming the condition is false
→
14
←
Taking false branch
→
161 err(1, "control_init: socket");
162
163 bzero(&sun, sizeof(sun));
164 sun.sun_family = AF_UNIX1;
165 if (strlcpy(sun.sun_path, sockname, sizeof(sun.sun_path)) >=
15
←
Assuming the condition is false
→
16
←
Taking false branch
→
166 sizeof(sun.sun_path))
167 errx(1, "socket name too long");
168 if (connect(fd, (struct sockaddr *)&sun, sizeof(sun)) == -1)
17
←
Assuming the condition is false
→
18
←
Taking false branch
→
169 err(1, "connect: %s", sockname);
170
171 if (pledge("stdio", NULL((void*)0)) == -1)
19
←
Assuming the condition is false
→
20
←
Taking false branch
→
172 err(1, "pledge");
173
174 if ((ibuf = malloc(sizeof(struct imsgbuf))) == NULL((void*)0))
21
←
Assuming the condition is false
→
22
←
Taking false branch
→
175 err(1, NULL((void*)0));
176 imsg_init(ibuf, fd);
177 done = 0;
178
179 switch (res->action) {
23
←
Control jumps to 'case NETWORK_ADD:' at line 311
→
180 case NONE:
181 case SHOW_MRT:
182 usage();
183 /* NOTREACHED */
184 case SHOW:
185 case SHOW_SUMMARY:
186 imsg_compose(ibuf, IMSG_CTL_SHOW_NEIGHBOR, 0, 0, -1, NULL((void*)0), 0);
187 break;
188 case SHOW_SUMMARY_TERSE:
189 imsg_compose(ibuf, IMSG_CTL_SHOW_TERSE, 0, 0, -1, NULL((void*)0), 0);
190 break;
191 case SHOW_FIB:
192 if (!res->addr.aid) {
193 struct ibuf *msg;
194 sa_family_t af;
195
196 af = aid2af(res->aid);
197 if ((msg = imsg_create(ibuf, IMSG_CTL_KROUTE,
198 res->rtableid, 0, sizeof(res->flags) +
199 sizeof(af))) == NULL((void*)0))
200 errx(1, "imsg_create failure");
201 if (imsg_add(msg, &res->flags, sizeof(res->flags)) ==
202 -1 ||
203 imsg_add(msg, &af, sizeof(af)) == -1)
204 errx(1, "imsg_add failure");
205 imsg_close(ibuf, msg);
206 } else
207 imsg_compose(ibuf, IMSG_CTL_KROUTE_ADDR, res->rtableid,
208 0, -1, &res->addr, sizeof(res->addr));
209 break;
210 case SHOW_FIB_TABLES:
211 imsg_compose(ibuf, IMSG_CTL_SHOW_FIB_TABLES, 0, 0, -1, NULL((void*)0), 0);
212 break;
213 case SHOW_NEXTHOP:
214 imsg_compose(ibuf, IMSG_CTL_SHOW_NEXTHOP, res->rtableid, 0, -1,
215 NULL((void*)0), 0);
216 break;
217 case SHOW_INTERFACE:
218 imsg_compose(ibuf, IMSG_CTL_SHOW_INTERFACE, 0, 0, -1, NULL((void*)0), 0);
219 break;
220 case SHOW_SET:
221 imsg_compose(ibuf, IMSG_CTL_SHOW_SET, 0, 0, -1, NULL((void*)0), 0);
222 break;
223 case SHOW_RTR:
224 imsg_compose(ibuf, IMSG_CTL_SHOW_RTR, 0, 0, -1, NULL((void*)0), 0);
225 break;
226 case SHOW_NEIGHBOR:
227 case SHOW_NEIGHBOR_TIMERS:
228 case SHOW_NEIGHBOR_TERSE:
229 neighbor.show_timers = (res->action == SHOW_NEIGHBOR_TIMERS);
230 if (res->peeraddr.aid || res->peerdesc[0])
231 imsg_compose(ibuf, IMSG_CTL_SHOW_NEIGHBOR, 0, 0, -1,
232 &neighbor, sizeof(neighbor));
233 else
234 imsg_compose(ibuf, IMSG_CTL_SHOW_NEIGHBOR, 0, 0, -1,
235 NULL((void*)0), 0);
236 break;
237 case SHOW_RIB:
238 bzero(&ribreq, sizeof(ribreq));
239 type = IMSG_CTL_SHOW_RIB;
240 if (res->addr.aid) {
241 ribreq.prefix = res->addr;
242 ribreq.prefixlen = res->prefixlen;
243 type = IMSG_CTL_SHOW_RIB_PREFIX;
244 }
245 if (res->as.type != AS_UNDEF)
246 ribreq.as = res->as;
247 if (res->community.flags != 0)
248 ribreq.community = res->community;
249 ribreq.neighbor = neighbor;
250 strlcpy(ribreq.rib, res->rib, sizeof(ribreq.rib));
251 ribreq.aid = res->aid;
252 ribreq.path_id = res->pathid;
253 ribreq.flags = res->flags;
254 imsg_compose(ibuf, type, 0, 0, -1, &ribreq, sizeof(ribreq));
255 break;
256 case SHOW_RIB_MEM:
257 imsg_compose(ibuf, IMSG_CTL_SHOW_RIB_MEM, 0, 0, -1, NULL((void*)0), 0);
258 break;
259 case RELOAD:
260 imsg_compose(ibuf, IMSG_CTL_RELOAD, 0, 0, -1,
261 res->reason, sizeof(res->reason));
262 if (res->reason[0])
263 printf("reload request sent: %s\n", res->reason);
264 else
265 printf("reload request sent.\n");
266 break;
267 case FIB:
268 errx(1, "action==FIB");
269 break;
270 case FIB_COUPLE:
271 imsg_compose(ibuf, IMSG_CTL_FIB_COUPLE, res->rtableid, 0, -1,
272 NULL((void*)0), 0);
273 printf("couple request sent.\n");
274 done = 1;
275 break;
276 case FIB_DECOUPLE:
277 imsg_compose(ibuf, IMSG_CTL_FIB_DECOUPLE, res->rtableid, 0, -1,
278 NULL((void*)0), 0);
279 printf("decouple request sent.\n");
280 done = 1;
281 break;
282 case NEIGHBOR:
283 errx(1, "action==NEIGHBOR");
284 break;
285 case NEIGHBOR_UP:
286 imsg_compose(ibuf, IMSG_CTL_NEIGHBOR_UP, 0, 0, -1,
287 &neighbor, sizeof(neighbor));
288 break;
289 case NEIGHBOR_DOWN:
290 imsg_compose(ibuf, IMSG_CTL_NEIGHBOR_DOWN, 0, 0, -1,
291 &neighbor, sizeof(neighbor));
292 break;
293 case NEIGHBOR_CLEAR:
294 imsg_compose(ibuf, IMSG_CTL_NEIGHBOR_CLEAR, 0, 0, -1,
295 &neighbor, sizeof(neighbor));
296 break;
297 case NEIGHBOR_RREFRESH:
298 imsg_compose(ibuf, IMSG_CTL_NEIGHBOR_RREFRESH, 0, 0, -1,
299 &neighbor, sizeof(neighbor));
300 break;
301 case NEIGHBOR_DESTROY:
302 imsg_compose(ibuf, IMSG_CTL_NEIGHBOR_DESTROY, 0, 0, -1,
303 &neighbor, sizeof(neighbor));
304 break;
305 case NETWORK_BULK_ADD:
306 case NETWORK_BULK_REMOVE:
307 network_bulk(res);
308 printf("requests sent.\n");
309 done = 1;
310 break;
311 case NETWORK_ADD:
312 case NETWORK_REMOVE:
313 bzero(&net, sizeof(net));
314 net.prefix = res->addr;
315 net.prefixlen = res->prefixlen;
316 net.rd = res->rd;
317 /* attribute sets are not supported */
318 if (res->action
23.1
Field 'action' is equal to NETWORK_ADD
 == NETWORK_ADD) {
24
←
Taking true branch
→
319 imsg_compose(ibuf, IMSG_NETWORK_ADD, 0, 0, -1,
320 &net, sizeof(net));
321 send_filterset(ibuf, &res->set);
25
←
Calling 'send_filterset'
→
322 imsg_compose(ibuf, IMSG_NETWORK_DONE, 0, 0, -1,
323 NULL((void*)0), 0);
324 } else
325 imsg_compose(ibuf, IMSG_NETWORK_REMOVE, 0, 0, -1,
326 &net, sizeof(net));
327 printf("request sent.\n");
328 done = 1;
329 break;
330 case NETWORK_FLUSH:
331 imsg_compose(ibuf, IMSG_NETWORK_FLUSH, 0, 0, -1, NULL((void*)0), 0);
332 printf("request sent.\n");
333 done = 1;
334 break;
335 case NETWORK_SHOW:
336 bzero(&ribreq, sizeof(ribreq));
337 ribreq.aid = res->aid;
338 strlcpy(ribreq.rib, res->rib, sizeof(ribreq.rib));
339 imsg_compose(ibuf, IMSG_CTL_SHOW_NETWORK, 0, 0, -1,
340 &ribreq, sizeof(ribreq));
341 break;
342 case NETWORK_MRT:
343 bzero(&ribreq, sizeof(ribreq));
344 if (res->as.type != AS_UNDEF)
345 ribreq.as = res->as;
346 if (res->addr.aid) {
347 ribreq.prefix = res->addr;
348 ribreq.prefixlen = res->prefixlen;
349 }
350 /* XXX currently no community support */
351 ribreq.neighbor = neighbor;
352 ribreq.aid = res->aid;
353 ribreq.flags = res->flags;
354 net_mrt.arg = &ribreq;
355 mrt_parse(res->mrtfd, &net_mrt, 1);
356 done = 1;
357 break;
358 case LOG_VERBOSE:
359 verbose = 1;
360 /* FALLTHROUGH */
361 case LOG_BRIEF:
362 imsg_compose(ibuf, IMSG_CTL_LOG_VERBOSE, 0, 0, -1,
363 &verbose, sizeof(verbose));
364 printf("logging request sent.\n");
365 done = 1;
366 break;
367 }
368
369 while (ibuf->w.queued)
370 if (msgbuf_write(&ibuf->w) <= 0 && errno(*__errno()) != EAGAIN35)
371 err(1, "write error");
372
373 output->head(res);
374
375 while (!done) {
376 if ((n = imsg_read(ibuf)) == -1 && errno(*__errno()) != EAGAIN35)
377 err(1, "imsg_read error");
378 if (n == 0)
379 errx(1, "pipe closed");
380
381 while (!done) {
382 if ((n = imsg_get(ibuf, &imsg)) == -1)
383 err(1, "imsg_get error");
384 if (n == 0)
385 break;
386
387 done = show(&imsg, res);
388 imsg_free(&imsg);
389 }
390 }
391
392 output->tail();
393
394 close(fd);
395 free(ibuf);
396
397 exit(0);
398}
399
400int
401show(struct imsg *imsg, struct parse_result *res)
402{
403 struct peer *p;
404 struct ctl_timer t;
405 struct ctl_show_interface *iface;
406 struct ctl_show_nexthop *nh;
407 struct ctl_show_set set;
408 struct ctl_show_rtr rtr;
409 struct kroute_full *kf;
410 struct ktable *kt;
411 struct ctl_show_rib rib;
412 struct rde_memstats stats;
413 struct rde_hashstats hash;
414 u_char *asdata;
415 u_int rescode, ilen;
416 size_t aslen;
417
418 switch (imsg->hdr.type) {
419 case IMSG_CTL_SHOW_NEIGHBOR:
420 p = imsg->data;
421 output->neighbor(p, res);
422 break;
423 case IMSG_CTL_SHOW_TIMER:
424 if (imsg->hdr.len < IMSG_HEADER_SIZEsizeof(struct imsg_hdr) + sizeof(t))
425 errx(1, "wrong imsg len");
426 memcpy(&t, imsg->data, sizeof(t));
427 if (t.type > 0 && t.type < Timer_Max)
428 output->timer(&t);
429 break;
430 case IMSG_CTL_SHOW_INTERFACE:
431 iface = imsg->data;
432 output->interface(iface);
433 break;
434 case IMSG_CTL_SHOW_NEXTHOP:
435 nh = imsg->data;
436 output->nexthop(nh);
437 break;
438 case IMSG_CTL_KROUTE:
439 case IMSG_CTL_SHOW_NETWORK:
440 if (imsg->hdr.len < IMSG_HEADER_SIZEsizeof(struct imsg_hdr) + sizeof(*kf))
441 errx(1, "wrong imsg len");
442 kf = imsg->data;
443 output->fib(kf);
444 break;
445 case IMSG_CTL_SHOW_FIB_TABLES:
446 if (imsg->hdr.len < IMSG_HEADER_SIZEsizeof(struct imsg_hdr) + sizeof(*kt))
447 errx(1, "wrong imsg len");
448 kt = imsg->data;
449 output->fib_table(kt);
450 break;
451 case IMSG_CTL_SHOW_RIB:
452 if (imsg->hdr.len < IMSG_HEADER_SIZEsizeof(struct imsg_hdr) + sizeof(rib))
453 errx(1, "wrong imsg len");
454 memcpy(&rib, imsg->data, sizeof(rib));
455 aslen = imsg->hdr.len - IMSG_HEADER_SIZEsizeof(struct imsg_hdr) - sizeof(rib);
456 asdata = imsg->data;
457 asdata += sizeof(rib);
458 output->rib(&rib, asdata, aslen, res);
459 break;
460 case IMSG_CTL_SHOW_RIB_COMMUNITIES:
461 ilen = imsg->hdr.len - IMSG_HEADER_SIZEsizeof(struct imsg_hdr);
462 if (ilen % sizeof(struct community)) {
463 warnx("bad IMSG_CTL_SHOW_RIB_COMMUNITIES received");
464 break;
465 }
466 output->communities(imsg->data, ilen, res);
467 break;
468 case IMSG_CTL_SHOW_RIB_ATTR:
469 ilen = imsg->hdr.len - IMSG_HEADER_SIZEsizeof(struct imsg_hdr);
470 if (ilen < 3) {
471 warnx("bad IMSG_CTL_SHOW_RIB_ATTR received");
472 break;
473 }
474 output->attr(imsg->data, ilen, res->flags, 0);
475 break;
476 case IMSG_CTL_SHOW_RIB_MEM:
477 if (imsg->hdr.len < IMSG_HEADER_SIZEsizeof(struct imsg_hdr) + sizeof(stats))
478 errx(1, "wrong imsg len");
479 memcpy(&stats, imsg->data, sizeof(stats));
480 output->rib_mem(&stats);
481 break;
482 case IMSG_CTL_SHOW_RIB_HASH:
483 if (imsg->hdr.len < IMSG_HEADER_SIZEsizeof(struct imsg_hdr) + sizeof(hash))
484 errx(1, "wrong imsg len");
485 memcpy(&hash, imsg->data, sizeof(hash));
486 output->rib_hash(&hash);
487 break;
488 case IMSG_CTL_SHOW_SET:
489 if (imsg->hdr.len < IMSG_HEADER_SIZEsizeof(struct imsg_hdr) + sizeof(set))
490 errx(1, "wrong imsg len");
491 memcpy(&set, imsg->data, sizeof(set));
492 output->set(&set);
493 break;
494 case IMSG_CTL_SHOW_RTR:
495 if (imsg->hdr.len < IMSG_HEADER_SIZEsizeof(struct imsg_hdr) + sizeof(rtr))
496 errx(1, "wrong imsg len");
497 memcpy(&rtr, imsg->data, sizeof(rtr));
498 output->rtr(&rtr);
499 break;
500 case IMSG_CTL_RESULT:
501 if (imsg->hdr.len != IMSG_HEADER_SIZEsizeof(struct imsg_hdr) + sizeof(rescode)) {
502 warnx("got IMSG_CTL_RESULT with wrong len");
503 break;
504 }
505 memcpy(&rescode, imsg->data, sizeof(rescode));
506 output->result(rescode);
507 return (1);
508 case IMSG_CTL_END:
509 return (1);
510 default:
511 warnx("unknown imsg %d received", imsg->hdr.type);
512 break;
513 }
514
515 return (0);
516}
517
518time_t
519get_monotime(time_t t)
520{
521 struct timespec ts;
522
523 if (t == 0)
524 return -1;
525 if (clock_gettime(CLOCK_MONOTONIC3, &ts) != 0)
526 err(1, "clock_gettime");
527 if (t > ts.tv_sec) /* time in the future is not possible */
528 t = ts.tv_sec;
529 return (ts.tv_sec - t);
530}
531
532char *
533fmt_peer(const char *descr, const struct bgpd_addr *remote_addr,
534 int masklen)
535{
536 const char *ip;
537 char *p;
538
539 if (descr && descr[0] && !nodescr) {
540 if ((p = strdup(descr)) == NULL((void*)0))
541 err(1, NULL((void*)0));
542 return (p);
543 }
544
545 ip = log_addr(remote_addr);
546 if (masklen != -1 && ((remote_addr->aid == AID_INET1 && masklen != 32) ||
547 (remote_addr->aid == AID_INET62 && masklen != 128))) {
548 if (asprintf(&p, "%s/%u", ip, masklen) == -1)
549 err(1, NULL((void*)0));
550 } else {
551 if ((p = strdup(ip)) == NULL((void*)0))
552 err(1, NULL((void*)0));
553 }
554
555 return (p);
556}
557
558const char *
559fmt_auth_method(enum auth_method method)
560{
561 switch (method) {
562 case AUTH_MD5SIG:
563 return ", using md5sig";
564 case AUTH_IPSEC_MANUAL_ESP:
565 return ", using ipsec manual esp";
566 case AUTH_IPSEC_MANUAL_AH:
567 return ", using ipsec manual ah";
568 case AUTH_IPSEC_IKE_ESP:
569 return ", using ipsec ike esp";
570 case AUTH_IPSEC_IKE_AH:
571 return ", using ipsec ike ah";
572 case AUTH_NONE: /* FALLTHROUGH */
573 default:
574 return "";
575 }
576}
577
578#define TF_BUFS8 8
579#define TF_LEN9 9
580
581const char *
582fmt_timeframe(time_t t)
583{
584 char *buf;
585 static char tfbuf[TF_BUFS8][TF_LEN9]; /* ring buffer */
586 static int idx = 0;
587 unsigned int sec, min, hrs, day;
588 unsigned long long week;
589
590 buf = tfbuf[idx++];
591 if (idx == TF_BUFS8)
592 idx = 0;
593
594 week = t;
595
596 sec = week % 60;
597 week /= 60;
598 min = week % 60;
599 week /= 60;
600 hrs = week % 24;
601 week /= 24;
602 day = week % 7;
603 week /= 7;
604
605 if (week > 0)
606 snprintf(buf, TF_LEN9, "%02lluw%01ud%02uh", week, day, hrs);
607 else if (day > 0)
608 snprintf(buf, TF_LEN9, "%01ud%02uh%02um", day, hrs, min);
609 else
610 snprintf(buf, TF_LEN9, "%02u:%02u:%02u", hrs, min, sec);
611
612 return (buf);
613}
614
615const char *
616fmt_monotime(time_t t)
617{
618 t = get_monotime(t);
619
620 if (t == -1)
621 return ("Never");
622
623 return (fmt_timeframe(t));
624}
625
626const char *
627fmt_fib_flags(u_int16_t flags)
628{
629 static char buf[8];
630
631 if (flags & F_DOWN0x0010)
632 strlcpy(buf, " ", sizeof(buf));
633 else
634 strlcpy(buf, "*", sizeof(buf));
635
636 if (flags & F_BGPD_INSERTED0x0001)
637 strlcat(buf, "B", sizeof(buf));
638 else if (flags & F_CONNECTED0x0004)
639 strlcat(buf, "C", sizeof(buf));
640 else if (flags & F_STATIC0x0020)
641 strlcat(buf, "S", sizeof(buf));
642 else if (flags & F_DYNAMIC0x0040)
643 strlcat(buf, "D", sizeof(buf));
644 else
645 strlcat(buf, " ", sizeof(buf));
646
647 if (flags & F_NEXTHOP0x0008)
648 strlcat(buf, "N", sizeof(buf));
649 else
650 strlcat(buf, " ", sizeof(buf));
651
652 if (flags & F_REJECT0x0080 && flags & F_BLACKHOLE0x0100)
653 strlcat(buf, "f", sizeof(buf));
654 else if (flags & F_REJECT0x0080)
655 strlcat(buf, "r", sizeof(buf));
656 else if (flags & F_BLACKHOLE0x0100)
657 strlcat(buf, "b", sizeof(buf));
658 else
659 strlcat(buf, " ", sizeof(buf));
660
661 if (strlcat(buf, " ", sizeof(buf)) >= sizeof(buf))
662 errx(1, "%s buffer too small", __func__);
663
664 return buf;
665}
666
667const char *
668fmt_origin(u_int8_t origin, int sum)
669{
670 switch (origin) {
671 case ORIGIN_IGP0:
672 return (sum ? "i" : "IGP");
673 case ORIGIN_EGP1:
674 return (sum ? "e" : "EGP");
675 case ORIGIN_INCOMPLETE2:
676 return (sum ? "?" : "incomplete");
677 default:
678 return (sum ? "X" : "bad origin");
679 }
680}
681
682const char *
683fmt_flags(u_int8_t flags, int sum)
684{
685 static char buf[80];
686 char flagstr[5];
687 char *p = flagstr;
688
689 if (sum) {
690 if (flags & F_PREF_INVALID0x20)
691 *p++ = 'E';
692 if (flags & F_PREF_ANNOUNCE0x08)
693 *p++ = 'A';
694 if (flags & F_PREF_INTERNAL0x04)
695 *p++ = 'I';
696 if (flags & F_PREF_STALE0x10)
697 *p++ = 'S';
698 if (flags & F_PREF_ELIGIBLE0x01)
699 *p++ = '*';
700 if (flags & F_PREF_ACTIVE0x02)
701 *p++ = '>';
702 *p = '\0';
703 snprintf(buf, sizeof(buf), "%-5s", flagstr);
704 } else {
705 if (flags & F_PREF_INTERNAL0x04)
706 strlcpy(buf, "internal", sizeof(buf));
707 else
708 strlcpy(buf, "external", sizeof(buf));
709
710 if (flags & F_PREF_STALE0x10)
711 strlcat(buf, ", stale", sizeof(buf));
712 if (flags & F_PREF_ELIGIBLE0x01)
713 strlcat(buf, ", valid", sizeof(buf));
714 if (flags & F_PREF_ACTIVE0x02)
715 strlcat(buf, ", best", sizeof(buf));
716 if (flags & F_PREF_ANNOUNCE0x08)
717 strlcat(buf, ", announced", sizeof(buf));
718 if (strlen(buf) >= sizeof(buf) - 1)
719 errx(1, "%s buffer too small", __func__);
720 }
721
722 return buf;
723}
724
725const char *
726fmt_ovs(u_int8_t validation_state, int sum)
727{
728 switch (validation_state) {
729 case ROA_INVALID0x1:
730 return (sum ? "!" : "invalid");
731 case ROA_VALID0x2:
732 return (sum ? "V" : "valid");
733 default:
734 return (sum ? "N" : "not-found");
735 }
736}
737
738const char *
739fmt_mem(long long num)
740{
741 static char buf[16];
742
743 if (fmt_scaled(num, buf) == -1)
744 snprintf(buf, sizeof(buf), "%lldB", num);
745
746 return (buf);
747}
748
749const char *
750fmt_errstr(u_int8_t errcode, u_int8_t subcode)
751{
752 static char errbuf[256];
753 const char *errstr = NULL((void*)0);
754 const char *suberr = NULL((void*)0);
755 int uk = 0;
756
757 if (errcode == 0) /* no error */
758 return NULL((void*)0);
759
760 if (errcode < sizeof(errnames)/sizeof(char *))
761 errstr = errnames[errcode];
762
763 switch (errcode) {
764 case ERR_HEADER:
765 if (subcode < sizeof(suberr_header_names)/sizeof(char *))
766 suberr = suberr_header_names[subcode];
767 else
768 uk = 1;
769 break;
770 case ERR_OPEN:
771 if (subcode < sizeof(suberr_open_names)/sizeof(char *))
772 suberr = suberr_open_names[subcode];
773 else
774 uk = 1;
775 break;
776 case ERR_UPDATE:
777 if (subcode < sizeof(suberr_update_names)/sizeof(char *))
778 suberr = suberr_update_names[subcode];
779 else
780 uk = 1;
781 break;
782 case ERR_HOLDTIMEREXPIRED:
783 if (subcode != 0)
784 uk = 1;
785 break;
786 case ERR_FSM:
787 if (subcode < sizeof(suberr_fsm_names)/sizeof(char *))
788 suberr = suberr_fsm_names[subcode];
789 else
790 uk = 1;
791 break;
792 case ERR_CEASE:
793 if (subcode < sizeof(suberr_cease_names)/sizeof(char *))
794 suberr = suberr_cease_names[subcode];
795 else
796 uk = 1;
797 break;
798 default:
799 snprintf(errbuf, sizeof(errbuf),
800 "unknown error code %u subcode %u", errcode, subcode);
801 return (errbuf);
802 }
803
804 if (uk)
805 snprintf(errbuf, sizeof(errbuf),
806 "%s, unknown subcode %u", errstr, subcode);
807 else if (suberr == NULL((void*)0))
808 return (errstr);
809 else
810 snprintf(errbuf, sizeof(errbuf),
811 "%s, %s", errstr, suberr);
812
813 return (errbuf);
814}
815
816const char *
817fmt_attr(u_int8_t type, int flags)
818{
819#define CHECK_FLAGS(s, t, m) \
820 if (((s) & ~(ATTR_DEFMASK(0x0f | 0x10) | (m))) != (t)) pflags = 1
821
822 static char cstr[48];
823 int pflags = 0;
824
825 switch (type) {
826 case ATTR_ORIGIN:
827 CHECK_FLAGS(flags, ATTR_WELL_KNOWN0x40, 0);
828 strlcpy(cstr, "Origin", sizeof(cstr));
829 break;
830 case ATTR_ASPATH:
831 CHECK_FLAGS(flags, ATTR_WELL_KNOWN0x40, 0);
832 strlcpy(cstr, "AS-Path", sizeof(cstr));
833 break;
834 case ATTR_AS4_PATH:
835 CHECK_FLAGS(flags, ATTR_WELL_KNOWN0x40, 0);
836 strlcpy(cstr, "AS4-Path", sizeof(cstr));
837 break;
838 case ATTR_NEXTHOP:
839 CHECK_FLAGS(flags, ATTR_WELL_KNOWN0x40, 0);
840 strlcpy(cstr, "Nexthop", sizeof(cstr));
841 break;
842 case ATTR_MED:
843 CHECK_FLAGS(flags, ATTR_OPTIONAL0x80, 0);
844 strlcpy(cstr, "Med", sizeof(cstr));
845 break;
846 case ATTR_LOCALPREF:
847 CHECK_FLAGS(flags, ATTR_WELL_KNOWN0x40, 0);
848 strlcpy(cstr, "Localpref", sizeof(cstr));
849 break;
850 case ATTR_ATOMIC_AGGREGATE:
851 CHECK_FLAGS(flags, ATTR_WELL_KNOWN0x40, 0);
852 strlcpy(cstr, "Atomic Aggregate", sizeof(cstr));
853 break;
854 case ATTR_AGGREGATOR:
855 CHECK_FLAGS(flags, ATTR_OPTIONAL0x80|ATTR_TRANSITIVE0x40, ATTR_PARTIAL0x20);
856 strlcpy(cstr, "Aggregator", sizeof(cstr));
857 break;
858 case ATTR_AS4_AGGREGATOR:
859 CHECK_FLAGS(flags, ATTR_OPTIONAL0x80|ATTR_TRANSITIVE0x40, ATTR_PARTIAL0x20);
860 strlcpy(cstr, "AS4-Aggregator", sizeof(cstr));
861 break;
862 case ATTR_COMMUNITIES:
863 CHECK_FLAGS(flags, ATTR_OPTIONAL0x80|ATTR_TRANSITIVE0x40, ATTR_PARTIAL0x20);
864 strlcpy(cstr, "Communities", sizeof(cstr));
865 break;
866 case ATTR_ORIGINATOR_ID:
867 CHECK_FLAGS(flags, ATTR_OPTIONAL0x80, 0);
868 strlcpy(cstr, "Originator Id", sizeof(cstr));
869 break;
870 case ATTR_CLUSTER_LIST:
871 CHECK_FLAGS(flags, ATTR_OPTIONAL0x80, 0);
872 strlcpy(cstr, "Cluster Id List", sizeof(cstr));
873 break;
874 case ATTR_MP_REACH_NLRI:
875 CHECK_FLAGS(flags, ATTR_OPTIONAL0x80, 0);
876 strlcpy(cstr, "MP Reach NLRI", sizeof(cstr));
877 break;
878 case ATTR_MP_UNREACH_NLRI:
879 CHECK_FLAGS(flags, ATTR_OPTIONAL0x80, 0);
880 strlcpy(cstr, "MP Unreach NLRI", sizeof(cstr));
881 break;
882 case ATTR_EXT_COMMUNITIES:
883 CHECK_FLAGS(flags, ATTR_OPTIONAL0x80|ATTR_TRANSITIVE0x40, ATTR_PARTIAL0x20);
884 strlcpy(cstr, "Ext. Communities", sizeof(cstr));
885 break;
886 case ATTR_LARGE_COMMUNITIES:
887 CHECK_FLAGS(flags, ATTR_OPTIONAL0x80|ATTR_TRANSITIVE0x40, ATTR_PARTIAL0x20);
888 strlcpy(cstr, "Large Communities", sizeof(cstr));
889 break;
890 default:
891 /* ignore unknown attributes */
892 snprintf(cstr, sizeof(cstr), "Unknown Attribute #%u", type);
893 pflags = 1;
894 break;
895 }
896 if (flags != -1 && pflags) {
897 strlcat(cstr, " flags [", sizeof(cstr));
898 if (flags & ATTR_OPTIONAL0x80)
899 strlcat(cstr, "O", sizeof(cstr));
900 if (flags & ATTR_TRANSITIVE0x40)
901 strlcat(cstr, "T", sizeof(cstr));
902 if (flags & ATTR_PARTIAL0x20)
903 strlcat(cstr, "P", sizeof(cstr));
904 strlcat(cstr, "]", sizeof(cstr));
905 }
906 return (cstr);
907
908#undef CHECK_FLAGS
909}
910
911const char *
912fmt_community(u_int16_t a, u_int16_t v)
913{
914 static char buf[12];
915
916 if (a == COMMUNITY_WELLKNOWN0xffff)
917 switch (v) {
918 case COMMUNITY_GRACEFUL_SHUTDOWN0x0000:
919 return "GRACEFUL_SHUTDOWN";
920 case COMMUNITY_NO_EXPORT0xff01:
921 return "NO_EXPORT";
922 case COMMUNITY_NO_ADVERTISE0xff02:
923 return "NO_ADVERTISE";
924 case COMMUNITY_NO_EXPSUBCONFED0xff03:
925 return "NO_EXPORT_SUBCONFED";
926 case COMMUNITY_NO_PEER0xff04:
927 return "NO_PEER";
928 case COMMUNITY_BLACKHOLE0x029A:
929 return "BLACKHOLE";
930 default:
931 break;
932 }
933
934 snprintf(buf, sizeof(buf), "%hu:%hu", a, v);
935 return buf;
936}
937
938const char *
939fmt_large_community(u_int32_t d1, u_int32_t d2, u_int32_t d3)
940{
941 static char buf[33];
942
943 snprintf(buf, sizeof(buf), "%u:%u:%u", d1, d2, d3);
944 return buf;
945}
946
947const char *
948fmt_ext_community(u_int8_t *data)
949{
950 static char buf[32];
951 u_int64_t ext;
952 struct in_addr ip;
953 u_int32_t as4, u32;
954 u_int16_t as2, u16;
955 u_int8_t type, subtype;
956
957 type = data[0];
958 subtype = data[1];
959
960 switch (type) {
961 case EXT_COMMUNITY_TRANS_TWO_AS0x00:
962 memcpy(&as2, data + 2, sizeof(as2));
963 memcpy(&u32, data + 4, sizeof(u32));
964 snprintf(buf, sizeof(buf), "%s %s:%u",
965 log_ext_subtype(type, subtype),
966 log_as(ntohs(as2)(__uint16_t)(__builtin_constant_p(as2) ? (__uint16_t)(((__uint16_t
)(as2) & 0xffU) << 8 | ((__uint16_t)(as2) & 0xff00U
) >> 8) : __swap16md(as2))), ntohl(u32)(__uint32_t)(__builtin_constant_p(u32) ? (__uint32_t)(((__uint32_t
)(u32) & 0xff) << 24 | ((__uint32_t)(u32) & 0xff00
) << 8 | ((__uint32_t)(u32) & 0xff0000) >> 8 |
((__uint32_t)(u32) & 0xff000000) >> 24) : __swap32md
(u32)));
967 return buf;
968 case EXT_COMMUNITY_TRANS_IPV40x01:
969 memcpy(&ip, data + 2, sizeof(ip));
970 memcpy(&u16, data + 6, sizeof(u16));
971 snprintf(buf, sizeof(buf), "%s %s:%hu",
972 log_ext_subtype(type, subtype),
973 inet_ntoa(ip), ntohs(u16)(__uint16_t)(__builtin_constant_p(u16) ? (__uint16_t)(((__uint16_t
)(u16) & 0xffU) << 8 | ((__uint16_t)(u16) & 0xff00U
) >> 8) : __swap16md(u16)));
974 return buf;
975 case EXT_COMMUNITY_TRANS_FOUR_AS0x02:
976 memcpy(&as4, data + 2, sizeof(as4));
977 memcpy(&u16, data + 6, sizeof(u16));
978 snprintf(buf, sizeof(buf), "%s %s:%hu",
979 log_ext_subtype(type, subtype),
980 log_as(ntohl(as4)(__uint32_t)(__builtin_constant_p(as4) ? (__uint32_t)(((__uint32_t
)(as4) & 0xff) << 24 | ((__uint32_t)(as4) & 0xff00
) << 8 | ((__uint32_t)(as4) & 0xff0000) >> 8 |
((__uint32_t)(as4) & 0xff000000) >> 24) : __swap32md
(as4))), ntohs(u16)(__uint16_t)(__builtin_constant_p(u16) ? (__uint16_t)(((__uint16_t
)(u16) & 0xffU) << 8 | ((__uint16_t)(u16) & 0xff00U
) >> 8) : __swap16md(u16)));
981 return buf;
982 case EXT_COMMUNITY_TRANS_OPAQUE0x03:
983 case EXT_COMMUNITY_TRANS_EVPN0x06:
984 memcpy(&ext, data, sizeof(ext));
985 ext = be64toh(ext)(__uint64_t)(__builtin_constant_p(ext) ? (__uint64_t)((((__uint64_t
)(ext) & 0xff) << 56) | ((__uint64_t)(ext) & 0xff00ULL
) << 40 | ((__uint64_t)(ext) & 0xff0000ULL) <<
24 | ((__uint64_t)(ext) & 0xff000000ULL) << 8 | ((
__uint64_t)(ext) & 0xff00000000ULL) >> 8 | ((__uint64_t
)(ext) & 0xff0000000000ULL) >> 24 | ((__uint64_t)(ext
) & 0xff000000000000ULL) >> 40 | ((__uint64_t)(ext)
& 0xff00000000000000ULL) >> 56) : __swap64md(ext)) & 0xffffffffffffLL;
986 snprintf(buf, sizeof(buf), "%s 0x%llx",
987 log_ext_subtype(type, subtype), (unsigned long long)ext);
988 return buf;
989 case EXT_COMMUNITY_NON_TRANS_OPAQUE0x43:
990 memcpy(&ext, data, sizeof(ext));
991 ext = be64toh(ext)(__uint64_t)(__builtin_constant_p(ext) ? (__uint64_t)((((__uint64_t
)(ext) & 0xff) << 56) | ((__uint64_t)(ext) & 0xff00ULL
) << 40 | ((__uint64_t)(ext) & 0xff0000ULL) <<
24 | ((__uint64_t)(ext) & 0xff000000ULL) << 8 | ((
__uint64_t)(ext) & 0xff00000000ULL) >> 8 | ((__uint64_t
)(ext) & 0xff0000000000ULL) >> 24 | ((__uint64_t)(ext
) & 0xff000000000000ULL) >> 40 | ((__uint64_t)(ext)
& 0xff00000000000000ULL) >> 56) : __swap64md(ext)) & 0xffffffffffffLL;
992 switch (ext) {
993 case EXT_COMMUNITY_OVS_VALID0:
994 snprintf(buf, sizeof(buf), "%s valid ",
995 log_ext_subtype(type, subtype));
996 return buf;
997 case EXT_COMMUNITY_OVS_NOTFOUND1:
998 snprintf(buf, sizeof(buf), "%s not-found ",
999 log_ext_subtype(type, subtype));
1000 return buf;
1001 case EXT_COMMUNITY_OVS_INVALID2:
1002 snprintf(buf, sizeof(buf), "%s invalid ",
1003 log_ext_subtype(type, subtype));
1004 return buf;
1005 default:
1006 snprintf(buf, sizeof(buf), "%s 0x%llx ",
1007 log_ext_subtype(type, subtype),
1008 (unsigned long long)ext);
1009 return buf;
1010 }
1011 break;
1012 default:
1013 memcpy(&ext, data, sizeof(ext));
1014 snprintf(buf, sizeof(buf), "%s 0x%llx",
1015 log_ext_subtype(type, subtype),
1016 (unsigned long long)be64toh(ext)(__uint64_t)(__builtin_constant_p(ext) ? (__uint64_t)((((__uint64_t
)(ext) & 0xff) << 56) | ((__uint64_t)(ext) & 0xff00ULL
) << 40 | ((__uint64_t)(ext) & 0xff0000ULL) <<
24 | ((__uint64_t)(ext) & 0xff000000ULL) << 8 | ((
__uint64_t)(ext) & 0xff00000000ULL) >> 8 | ((__uint64_t
)(ext) & 0xff0000000000ULL) >> 24 | ((__uint64_t)(ext
) & 0xff000000000000ULL) >> 40 | ((__uint64_t)(ext)
& 0xff00000000000000ULL) >> 56) : __swap64md(ext)));
1017 return buf;
1018 }
1019}
1020
1021const char *
1022fmt_set_type(struct ctl_show_set *set)
1023{
1024 switch (set->type) {
1025 case ROA_SET:
1026 return "ROA";
1027 case PREFIX_SET:
1028 return "PREFIX";
1029 case ORIGIN_SET:
1030 return "ORIGIN";
1031 case ASNUM_SET:
1032 return "ASNUM";
1033 default:
1034 return "BULA";
1035 }
1036}
1037
1038void
1039send_filterset(struct imsgbuf *i, struct filter_set_head *set)
1040{
1041 struct filter_set *s;
1042
1043 while ((s = TAILQ_FIRST(set)((set)->tqh_first)) != NULL((void*)0)) {
26
←
Assuming the condition is true
→
27
←
Loop condition is true. Entering loop body
→
32
←
Loop condition is true. Entering loop body
→
1044 imsg_compose(i, IMSG_FILTER_SET, 0, 0, -1, s,
33
←
Use of memory after it is freed
1045 sizeof(struct filter_set));
1046 TAILQ_REMOVE(set, s, entry)do { if (((s)->entry.tqe_next) != ((void*)0)) (s)->entry
.tqe_next->entry.tqe_prev = (s)->entry.tqe_prev; else (
set)->tqh_last = (s)->entry.tqe_prev; *(s)->entry.tqe_prev
= (s)->entry.tqe_next; ; ; } while (0);
28
←
Assuming field 'tqe_next' is equal to null
→
29
←
Taking false branch
→
30
←
Loop condition is false. Exiting loop
→
1047 free(s);
31
←
Memory is released
→
1048 }
1049}
1050
1051void
1052network_bulk(struct parse_result *res)
1053{
1054 struct network_config net;
1055 struct filter_set *s = NULL((void*)0);
1056 struct bgpd_addr h;
1057 char *line = NULL((void*)0);
1058 size_t linesize = 0;
1059 ssize_t linelen;
1060 u_int8_t len;
1061 FILE *f;
1062
1063 if ((f = fdopen(STDIN_FILENO0, "r")) == NULL((void*)0))
1064 err(1, "Failed to open stdin\n");
1065
1066 while ((linelen = getline(&line, &linesize, f)) != -1) {
1067 char *b, *buf = line;
1068 while ((b = strsep(&buf, " \t\n")) != NULL((void*)0)) {
1069 if (*b == '\0') /* skip empty tokens */
1070 continue;
1071 /* Stop processing after a comment */
1072 if (*b == '#')
1073 break;
1074 bzero(&net, sizeof(net));
1075 if (parse_prefix(b, strlen(b), &h, &len) != 1)
1076 errx(1, "bad prefix: %s", b);
1077 net.prefix = h;
1078 net.prefixlen = len;
1079 net.rd = res->rd;
1080
1081 if (res->action == NETWORK_BULK_ADD) {
1082 imsg_compose(ibuf, IMSG_NETWORK_ADD,
1083 0, 0, -1, &net, sizeof(net));
1084 /*
1085 * can't use send_filterset since that
1086 * would free the set.
1087 */
1088 TAILQ_FOREACH(s, &res->set, entry)for((s) = ((&res->set)->tqh_first); (s) != ((void*)
0); (s) = ((s)->entry.tqe_next)) {
1089 imsg_compose(ibuf,
1090 IMSG_FILTER_SET,
1091 0, 0, -1, s, sizeof(*s));
1092 }
1093 imsg_compose(ibuf, IMSG_NETWORK_DONE,
1094 0, 0, -1, NULL((void*)0), 0);
1095 } else
1096 imsg_compose(ibuf, IMSG_NETWORK_REMOVE,
1097 0, 0, -1, &net, sizeof(net));
1098 }
1099 }
1100 free(line);
1101 if (ferror(f)(!__isthreaded ? (((f)->_flags & 0x0040) != 0) : (ferror
)(f)))
1102 err(1, "getline");
1103 fclose(f);
1104}
1105
1106void
1107show_mrt_dump_neighbors(struct mrt_rib *mr, struct mrt_peer *mp, void *arg)
1108{
1109 struct mrt_peer_entry *p;
1110 struct in_addr ina;
1111 u_int16_t i;
1112
1113 ina.s_addr = htonl(mp->bgp_id)(__uint32_t)(__builtin_constant_p(mp->bgp_id) ? (__uint32_t
)(((__uint32_t)(mp->bgp_id) & 0xff) << 24 | ((__uint32_t
)(mp->bgp_id) & 0xff00) << 8 | ((__uint32_t)(mp->
bgp_id) & 0xff0000) >> 8 | ((__uint32_t)(mp->bgp_id
) & 0xff000000) >> 24) : __swap32md(mp->bgp_id));
1114 printf("view: %s BGP ID: %s Number of peers: %u\n\n",
1115 mp->view, inet_ntoa(ina), mp->npeers);
1116 printf("%-30s %8s %15s\n", "Neighbor", "AS", "BGP ID");
1117 for (i = 0; i < mp->npeers; i++) {
1118 p = &mp->peers[i];
1119 ina.s_addr = htonl(p->bgp_id)(__uint32_t)(__builtin_constant_p(p->bgp_id) ? (__uint32_t
)(((__uint32_t)(p->bgp_id) & 0xff) << 24 | ((__uint32_t
)(p->bgp_id) & 0xff00) << 8 | ((__uint32_t)(p->
bgp_id) & 0xff0000) >> 8 | ((__uint32_t)(p->bgp_id
) & 0xff000000) >> 24) : __swap32md(p->bgp_id));
1120 printf("%-30s %8u %15s\n", log_addr(&p->addr), p->asnum,
1121 inet_ntoa(ina));
1122 }
1123 /* we only print the first message */
1124 exit(0);
1125}
1126
1127void
1128show_mrt_dump(struct mrt_rib *mr, struct mrt_peer *mp, void *arg)
1129{
1130 struct ctl_show_rib ctl;
1131 struct parse_result res;
1132 struct ctl_show_rib_request *req = arg;
1133 struct mrt_rib_entry *mre;
1134 time_t now;
1135 u_int16_t i, j;
1136
1137 memset(&res, 0, sizeof(res));
1138 res.flags = req->flags;
1139 now = time(NULL((void*)0));
1140
1141 for (i = 0; i < mr->nentries; i++) {
1142 mre = &mr->entries[i];
1143 bzero(&ctl, sizeof(ctl));
1144 ctl.prefix = mr->prefix;
1145 ctl.prefixlen = mr->prefixlen;
1146 if (mre->originated <= now)
1147 ctl.age = now - mre->originated;
1148 ctl.true_nexthop = mre->nexthop;
1149 ctl.exit_nexthop = mre->nexthop;
1150 ctl.origin = mre->origin;
1151 ctl.local_pref = mre->local_pref;
1152 ctl.med = mre->med;
1153 /* weight is not part of the mrt dump so it can't be set */
1154 if (mr->add_path) {
1155 ctl.flags |= F_PREF_PATH_ID0x40;
1156 ctl.path_id = mre->path_id;
1157 }
1158
1159 if (mre->peer_idx < mp->npeers) {
1160 ctl.remote_addr = mp->peers[mre->peer_idx].addr;
1161 ctl.remote_id = mp->peers[mre->peer_idx].bgp_id;
1162 }
1163
1164 /* filter by neighbor */
1165 if (req->neighbor.addr.aid != AID_UNSPEC0 &&
1166 memcmp(&req->neighbor.addr, &ctl.remote_addr,
1167 sizeof(ctl.remote_addr)) != 0)
1168 continue;
1169 /* filter by AF */
1170 if (req->aid && req->aid != ctl.prefix.aid)
1171 return;
1172 /* filter by prefix */
1173 if (req->prefix.aid != AID_UNSPEC0) {
1174 if (req->flags & F_LONGER0x0200) {
1175 if (req->prefixlen > ctl.prefixlen)
1176 return;
1177 if (prefix_compare(&req->prefix, &ctl.prefix,
1178 req->prefixlen))
1179 return;
1180 } else if (req->flags & F_SHORTER0x0400) {
1181 if (req->prefixlen < ctl.prefixlen)
1182 return;
1183 if (prefix_compare(&req->prefix, &ctl.prefix,
1184 ctl.prefixlen))
1185 return;
1186 } else {
1187 if (req->prefixlen != ctl.prefixlen)
1188 return;
1189 if (prefix_compare(&req->prefix, &ctl.prefix,
1190 req->prefixlen))
1191 return;
1192 }
1193 }
1194 /* filter by AS */
1195 if (req->as.type != AS_UNDEF &&
1196 !match_aspath(mre->aspath, mre->aspath_len, &req->as))
1197 continue;
1198
1199 output->rib(&ctl, mre->aspath, mre->aspath_len, &res);
1200 if (req->flags & F_CTL_DETAIL0x1000) {
1201 for (j = 0; j < mre->nattrs; j++)
1202 output->attr(mre->attrs[j].attr,
1203 mre->attrs[j].attr_len, req->flags, 0);
1204 }
1205 }
1206}
1207
1208void
1209network_mrt_dump(struct mrt_rib *mr, struct mrt_peer *mp, void *arg)
1210{
1211 struct ctl_show_rib ctl;
1212 struct network_config net;
1213 struct ctl_show_rib_request *req = arg;
1214 struct mrt_rib_entry *mre;
1215 struct ibuf *msg;
1216 time_t now;
1217 u_int16_t i, j;
1218
1219 /* can't announce more than one path so ignore add-path */
1220 if (mr->add_path)
1221 return;
1222
1223 now = time(NULL((void*)0));
1224 for (i = 0; i < mr->nentries; i++) {
1225 mre = &mr->entries[i];
1226 bzero(&ctl, sizeof(ctl));
1227 ctl.prefix = mr->prefix;
1228 ctl.prefixlen = mr->prefixlen;
1229 if (mre->originated <= now)
1230 ctl.age = now - mre->originated;
1231 ctl.true_nexthop = mre->nexthop;
1232 ctl.exit_nexthop = mre->nexthop;
1233 ctl.origin = mre->origin;
1234 ctl.local_pref = mre->local_pref;
1235 ctl.med = mre->med;
1236
1237 if (mre->peer_idx < mp->npeers) {
1238 ctl.remote_addr = mp->peers[mre->peer_idx].addr;
1239 ctl.remote_id = mp->peers[mre->peer_idx].bgp_id;
1240 }
1241
1242 /* filter by neighbor */
1243 if (req->neighbor.addr.aid != AID_UNSPEC0 &&
1244 memcmp(&req->neighbor.addr, &ctl.remote_addr,
1245 sizeof(ctl.remote_addr)) != 0)
1246 continue;
1247 /* filter by AF */
1248 if (req->aid && req->aid != ctl.prefix.aid)
1249 return;
1250 /* filter by prefix */
1251 if (req->prefix.aid != AID_UNSPEC0) {
1252 if (!prefix_compare(&req->prefix, &ctl.prefix,
1253 req->prefixlen)) {
1254 if (req->flags & F_LONGER0x0200) {
1255 if (req->prefixlen > ctl.prefixlen)
1256 return;
1257 } else if (req->prefixlen != ctl.prefixlen)
1258 return;
1259 } else
1260 return;
1261 }
1262 /* filter by AS */
1263 if (req->as.type != AS_UNDEF &&
1264 !match_aspath(mre->aspath, mre->aspath_len, &req->as))
1265 continue;
1266
1267 bzero(&net, sizeof(net));
1268 net.prefix = ctl.prefix;
1269 net.prefixlen = ctl.prefixlen;
1270 net.type = NETWORK_MRTCLONE;
1271 /* XXX rd can't be set and will be 0 */
1272
1273 imsg_compose(ibuf, IMSG_NETWORK_ADD, 0, 0, -1,
1274 &net, sizeof(net));
1275 if ((msg = imsg_create(ibuf, IMSG_NETWORK_ASPATH,
1276 0, 0, sizeof(ctl) + mre->aspath_len)) == NULL((void*)0))
1277 errx(1, "imsg_create failure");
1278 if (imsg_add(msg, &ctl, sizeof(ctl)) == -1 ||
1279 imsg_add(msg, mre->aspath, mre->aspath_len) == -1)
1280 errx(1, "imsg_add failure");
1281 imsg_close(ibuf, msg);
1282 for (j = 0; j < mre->nattrs; j++)
1283 imsg_compose(ibuf, IMSG_NETWORK_ATTR, 0, 0, -1,
1284 mre->attrs[j].attr, mre->attrs[j].attr_len);
1285 imsg_compose(ibuf, IMSG_NETWORK_DONE, 0, 0, -1, NULL((void*)0), 0);
1286
1287 while (ibuf->w.queued) {
1288 if (msgbuf_write(&ibuf->w) <= 0 && errno(*__errno()) != EAGAIN35)
1289 err(1, "write error");
1290 }
1291 }
1292}
1293
1294static const char *
1295fmt_time(struct timespec *t)
1296{
1297 static char timebuf[32];
1298 static struct timespec prevtime;
1299 struct timespec temp;
1300
1301 timespecsub(t, &prevtime, &temp)do { (&temp)->tv_sec = (t)->tv_sec - (&prevtime
)->tv_sec; (&temp)->tv_nsec = (t)->tv_nsec - (&
prevtime)->tv_nsec; if ((&temp)->tv_nsec < 0) { (
&temp)->tv_sec--; (&temp)->tv_nsec += 1000000000L
; } } while (0);
1302 snprintf(timebuf, sizeof(timebuf), "%lld.%06ld",
1303 (long long)temp.tv_sec, temp.tv_nsec / 1000);
1304 prevtime = *t;
1305 return (timebuf);
1306}
1307
1308void
1309show_mrt_state(struct mrt_bgp_state *ms, void *arg)
1310{
1311 printf("%s %s[%u] -> ", fmt_time(&ms->time),
1312 log_addr(&ms->src), ms->src_as);
1313 printf("%s[%u]: %s -> %s\n", log_addr(&ms->dst), ms->dst_as,
1314 statenames[ms->old_state], statenames[ms->new_state]);
1315}
1316
1317static void
1318print_afi(u_char *p, u_int8_t len)
1319{
1320 u_int16_t afi;
1321 u_int8_t safi, aid;
1322
1323 if (len != 4) {
1324 printf("bad length");
1325 return;
1326 }
1327
1328 /* afi, 2 byte */
1329 memcpy(&afi, p, sizeof(afi));
1330 afi = ntohs(afi)(__uint16_t)(__builtin_constant_p(afi) ? (__uint16_t)(((__uint16_t
)(afi) & 0xffU) << 8 | ((__uint16_t)(afi) & 0xff00U
) >> 8) : __swap16md(afi));
1331 p += 2;
1332 /* reserved, 1 byte */
1333 p += 1;
1334 /* safi, 1 byte */
1335 memcpy(&safi, p, sizeof(safi));
1336 if (afi2aid(afi, safi, &aid) == -1)
1337 printf("unkown afi %u safi %u", afi, safi);
1338 else
1339 printf("%s", aid2str(aid));
1340}
1341
1342static void
1343print_capability(u_int8_t capa_code, u_char *p, u_int8_t len)
1344{
1345 switch (capa_code) {
1346 case CAPA_MP:
1347 printf("multiprotocol capability: ");
1348 print_afi(p, len);
1349 break;
1350 case CAPA_REFRESH:
1351 printf("route refresh capability");
1352 break;
1353 case CAPA_RESTART:
1354 printf("graceful restart capability");
1355 /* XXX there is more needed here */
1356 break;
1357 case CAPA_AS4BYTE:
1358 printf("4-byte AS num capability: ");
1359 if (len == 4) {
1360 u_int32_t as;
1361 memcpy(&as, p, sizeof(as));
1362 as = ntohl(as)(__uint32_t)(__builtin_constant_p(as) ? (__uint32_t)(((__uint32_t
)(as) & 0xff) << 24 | ((__uint32_t)(as) & 0xff00
) << 8 | ((__uint32_t)(as) & 0xff0000) >> 8 |
((__uint32_t)(as) & 0xff000000) >> 24) : __swap32md
(as));
1363 printf("AS %u", as);
1364 } else
1365 printf("bad length");
1366 break;
1367 case CAPA_ADD_PATH:
1368 printf("add-path capability");
1369 /* XXX there is more needed here */
1370 break;
1371 case CAPA_ENHANCED_RR:
1372 printf("enhanced route refresh capability");
1373 break;
1374 default:
1375 printf("unknown capability %u length %u", capa_code, len);
1376 break;
1377 }
1378}
1379
1380static void
1381print_notification(u_int8_t errcode, u_int8_t subcode)
1382{
1383 const char *suberrname = NULL((void*)0);
1384 int uk = 0;
1385
1386 switch (errcode) {
1387 case ERR_HEADER:
1388 if (subcode >= sizeof(suberr_header_names)/sizeof(char *))
1389 uk = 1;
1390 else
1391 suberrname = suberr_header_names[subcode];
1392 break;
1393 case ERR_OPEN:
1394 if (subcode >= sizeof(suberr_open_names)/sizeof(char *))
1395 uk = 1;
1396 else
1397 suberrname = suberr_open_names[subcode];
1398 break;
1399 case ERR_UPDATE:
1400 if (subcode >= sizeof(suberr_update_names)/sizeof(char *))
1401 uk = 1;
1402 else
1403 suberrname = suberr_update_names[subcode];
1404 break;
1405 case ERR_CEASE:
1406 if (subcode >= sizeof(suberr_cease_names)/sizeof(char *))
1407 uk = 1;
1408 else
1409 suberrname = suberr_cease_names[subcode];
1410 break;
1411 case ERR_HOLDTIMEREXPIRED:
1412 if (subcode != 0)
1413 uk = 1;
1414 break;
1415 case ERR_FSM:
1416 if (subcode >= sizeof(suberr_fsm_names)/sizeof(char *))
1417 uk = 1;
1418 else
1419 suberrname = suberr_fsm_names[subcode];
1420 break;
1421 default:
1422 printf("unknown errcode %u, subcode %u",
1423 errcode, subcode);
1424 return;
1425 }
1426
1427 if (uk)
1428 printf("%s, unknown subcode %u", errnames[errcode], subcode);
1429 else {
1430 if (suberrname == NULL((void*)0))
1431 printf("%s", errnames[errcode]);
1432 else
1433 printf("%s, %s", errnames[errcode], suberrname);
1434 }
1435}
1436
1437static int
1438show_mrt_capabilities(u_char *p, u_int16_t len)
1439{
1440 u_int16_t totlen = len;
1441 u_int8_t capa_code, capa_len;
1442
1443 while (len > 2) {
1444 memcpy(&capa_code, p, sizeof(capa_code));
1445 p += sizeof(capa_code);
1446 len -= sizeof(capa_code);
1447 memcpy(&capa_len, p, sizeof(capa_len));
1448 p += sizeof(capa_len);
1449 len -= sizeof(capa_len);
1450 if (len < capa_len) {
1451 printf("capa_len %u exceeds remaining length",
1452 capa_len);
1453 return (-1);
1454 }
1455 printf("\n ");
1456 print_capability(capa_code, p, capa_len);
1457 p += capa_len;
1458 len -= capa_len;
1459 }
1460 if (len != 0) {
1461 printf("length missmatch while capability parsing");
1462 return (-1);
1463 }
1464 return (totlen);
1465}
1466
1467static void
1468show_mrt_open(u_char *p, u_int16_t len)
1469{
1470 u_int8_t version, optparamlen;
1471 u_int16_t short_as, holdtime;
1472 struct in_addr bgpid;
1473
1474 /* length check up to optparamlen already happened */
1475 memcpy(&version, p, sizeof(version));
1476 p += sizeof(version);
1477 len -= sizeof(version);
1478 memcpy(&short_as, p, sizeof(short_as));
1479 p += sizeof(short_as);
1480 len -= sizeof(short_as);
1481 short_as = ntohs(short_as)(__uint16_t)(__builtin_constant_p(short_as) ? (__uint16_t)(((
__uint16_t)(short_as) & 0xffU) << 8 | ((__uint16_t)
(short_as) & 0xff00U) >> 8) : __swap16md(short_as));
1482 memcpy(&holdtime, p, sizeof(holdtime));
1483 holdtime = ntohs(holdtime)(__uint16_t)(__builtin_constant_p(holdtime) ? (__uint16_t)(((
__uint16_t)(holdtime) & 0xffU) << 8 | ((__uint16_t)
(holdtime) & 0xff00U) >> 8) : __swap16md(holdtime));
1484 p += sizeof(holdtime);
1485 len -= sizeof(holdtime);
1486 memcpy(&bgpid, p, sizeof(bgpid));
1487 p += sizeof(bgpid);
1488 len -= sizeof(bgpid);
1489 memcpy(&optparamlen, p, sizeof(optparamlen));
1490 p += sizeof(optparamlen);
1491 len -= sizeof(optparamlen);
1492
1493 printf("\n ");
1494 printf("Version: %d AS: %u Holdtime: %u BGP Id: %s Paramlen: %u",
1495 version, short_as, holdtime, inet_ntoa(bgpid), optparamlen);
1496 if (optparamlen != len) {
1497 printf("optional parameter length mismatch");
1498 return;
1499 }
1500 while (len > 2) {
1501 u_int8_t op_type, op_len;
1502 int r;
1503
1504 memcpy(&op_type, p, sizeof(op_type));
1505 p += sizeof(op_type);
1506 len -= sizeof(op_type);
1507 memcpy(&op_len, p, sizeof(op_len));
1508 p += sizeof(op_len);
1509 len -= sizeof(op_len);
1510
1511 printf("\n ");
1512 switch (op_type) {
1513 case OPT_PARAM_CAPABILITIES:
1514 printf("Capabilities: size %u", op_len);
1515 r = show_mrt_capabilities(p, op_len);
1516 if (r == -1)
1517 return;
1518 p += r;
1519 len -= r;
1520 break;
1521 case OPT_PARAM_AUTH:
1522 default:
1523 printf("unsupported optional parameter: type %u",
1524 op_type);
1525 return;
1526 }
1527 }
1528 if (len != 0) {
1529 printf("optional parameter encoding error");
1530 return;
1531 }
1532}
1533
1534static void
1535show_mrt_notification(u_char *p, u_int16_t len)
1536{
1537 u_int16_t i;
1538 u_int8_t errcode, subcode;
1539 size_t reason_len;
1540 char reason[REASON_LEN256];
1541
1542 memcpy(&errcode, p, sizeof(errcode));
1543 p += sizeof(errcode);
1544 len -= sizeof(errcode);
1545
1546 memcpy(&subcode, p, sizeof(subcode));
1547 p += sizeof(subcode);
1548 len -= sizeof(subcode);
1549
1550 printf("\n ");
1551 print_notification(errcode, subcode);
1552
1553 if (errcode == ERR_CEASE && (subcode == ERR_CEASE_ADMIN_DOWN ||
1554 subcode == ERR_CEASE_ADMIN_RESET)) {
1555 if (len > 1) {
1556 reason_len = *p++;
1557 len--;
1558 if (len < reason_len) {
1559 printf("truncated shutdown reason");
1560 return;
1561 }
1562 if (reason_len > REASON_LEN256 - 1) {
1563 printf("overly long shutdown reason");
1564 return;
1565 }
1566 memcpy(reason, p, reason_len);
1567 reason[reason_len] = '\0';
1568 printf("shutdown reason: \"%s\"",
1569 log_reason(reason));
1570 p += reason_len;
1571 len -= reason_len;
1572 }
1573 }
1574 if (errcode == ERR_OPEN && subcode == ERR_OPEN_CAPA) {
1575 int r;
1576
1577 r = show_mrt_capabilities(p, len);
1578 if (r == -1)
1579 return;
1580 p += r;
1581 len -= r;
1582 }
1583
1584 if (len > 0) {
1585 printf("\n additional data %u bytes", len);
1586 for (i = 0; i < len; i++) {
1587 if (i % 16 == 0)
1588 printf("\n ");
1589 if (i % 8 == 0)
1590 printf(" ");
1591 printf(" %02X", *p++);
1592 }
1593 }
1594}
1595
1596/* XXX this function does not handle JSON output */
1597static void
1598show_mrt_update(u_char *p, u_int16_t len, int reqflags, int addpath)
1599{
1600 struct bgpd_addr prefix;
1601 int pos;
1602 u_int32_t pathid;
1603 u_int16_t wlen, alen;
1604 u_int8_t prefixlen;
1605
1606 if (len < sizeof(wlen)) {
1607 printf("bad length");
1608 return;
1609 }
1610 memcpy(&wlen, p, sizeof(wlen));
1611 wlen = ntohs(wlen)(__uint16_t)(__builtin_constant_p(wlen) ? (__uint16_t)(((__uint16_t
)(wlen) & 0xffU) << 8 | ((__uint16_t)(wlen) & 0xff00U
) >> 8) : __swap16md(wlen));
1612 p += sizeof(wlen);
1613 len -= sizeof(wlen);
1614
1615 if (len < wlen) {
1616 printf("bad withdraw length");
1617 return;
1618 }
1619 if (wlen > 0) {
1620 printf("\n Withdrawn prefixes:");
1621 while (wlen > 0) {
1622 if (addpath) {
1623 if (wlen <= sizeof(pathid)) {
1624 printf("bad withdraw prefix");
1625 return;
1626 }
1627 memcpy(&pathid, p, sizeof(pathid));
1628 pathid = ntohl(pathid)(__uint32_t)(__builtin_constant_p(pathid) ? (__uint32_t)(((__uint32_t
)(pathid) & 0xff) << 24 | ((__uint32_t)(pathid) &
0xff00) << 8 | ((__uint32_t)(pathid) & 0xff0000) >>
8 | ((__uint32_t)(pathid) & 0xff000000) >> 24) : __swap32md
(pathid));
1629 p += sizeof(pathid);
1630 len -= sizeof(pathid);
1631 wlen -= sizeof(pathid);
1632 }
1633 if ((pos = nlri_get_prefix(p, wlen, &prefix,
1634 &prefixlen)) == -1) {
1635 printf("bad withdraw prefix");
1636 return;
1637 }
1638 printf(" %s/%u", log_addr(&prefix), prefixlen);
1639 if (addpath)
1640 printf(" path-id %u", pathid);
1641 p += pos;
1642 len -= pos;
1643 wlen -= pos;
1644 }
1645 }
1646
1647 if (len < sizeof(alen)) {
1648 printf("bad length");
1649 return;
1650 }
1651 memcpy(&alen, p, sizeof(alen));
1652 alen = ntohs(alen)(__uint16_t)(__builtin_constant_p(alen) ? (__uint16_t)(((__uint16_t
)(alen) & 0xffU) << 8 | ((__uint16_t)(alen) & 0xff00U
) >> 8) : __swap16md(alen));
1653 p += sizeof(alen);
1654 len -= sizeof(alen);
1655
1656 if (len < alen) {
1657 printf("bad attribute length");
1658 return;
1659 }
1660 printf("\n");
1661 /* alen attributes here */
1662 while (alen > 3) {
1663 u_int8_t flags;
1664 u_int16_t attrlen;
1665
1666 flags = p[0];
1667 /* type = p[1]; */
1668
1669 /* get the attribute length */
1670 if (flags & ATTR_EXTLEN0x10) {
1671 if (len < sizeof(attrlen) + 2)
1672 printf("bad attribute length");
1673 memcpy(&attrlen, &p[2], sizeof(attrlen));
1674 attrlen = ntohs(attrlen)(__uint16_t)(__builtin_constant_p(attrlen) ? (__uint16_t)(((__uint16_t
)(attrlen) & 0xffU) << 8 | ((__uint16_t)(attrlen) &
0xff00U) >> 8) : __swap16md(attrlen));
1675 attrlen += sizeof(attrlen) + 2;
1676 } else {
1677 attrlen = p[2];
1678 attrlen += 1 + 2;
1679 }
1680
1681 output->attr(p, attrlen, reqflags, addpath);
1682 p += attrlen;
1683 alen -= attrlen;
1684 len -= attrlen;
1685 }
1686
1687 if (len > 0) {
1688 printf(" NLRI prefixes:");
1689 while (len > 0) {
1690 if (addpath) {
1691 if (len <= sizeof(pathid)) {
1692 printf(" bad nlri prefix: pathid, len %d", len);
1693 return;
1694 }
1695 memcpy(&pathid, p, sizeof(pathid));
1696 pathid = ntohl(pathid)(__uint32_t)(__builtin_constant_p(pathid) ? (__uint32_t)(((__uint32_t
)(pathid) & 0xff) << 24 | ((__uint32_t)(pathid) &
0xff00) << 8 | ((__uint32_t)(pathid) & 0xff0000) >>
8 | ((__uint32_t)(pathid) & 0xff000000) >> 24) : __swap32md
(pathid));
1697 p += sizeof(pathid);
1698 len -= sizeof(pathid);
1699 }
1700 if ((pos = nlri_get_prefix(p, len, &prefix,
1701 &prefixlen)) == -1) {
1702 printf(" bad nlri prefix");
1703 return;
1704 }
1705 printf(" %s/%u", log_addr(&prefix), prefixlen);
1706 if (addpath)
1707 printf(" path-id %u", pathid);
1708 p += pos;
1709 len -= pos;
1710 }
1711 }
1712}
1713
1714void
1715show_mrt_msg(struct mrt_bgp_msg *mm, void *arg)
1716{
1717 static const u_int8_t marker[MSGSIZE_HEADER_MARKER16] = {
1718 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1719 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
1720 u_char *p;
1721 u_int16_t len;
1722 u_int8_t type;
1723 struct ctl_show_rib_request *req = arg;
1724
1725 printf("%s %s[%u] -> ", fmt_time(&mm->time),
1726 log_addr(&mm->src), mm->src_as);
1727 printf("%s[%u]: size %u%s ", log_addr(&mm->dst), mm->dst_as,
1728 mm->msg_len, mm->add_path ? " addpath" : "");
1729 p = mm->msg;
1730 len = mm->msg_len;
1731
1732 if (len < MSGSIZE_HEADER19) {
1733 printf("illegal header length: %u byte\n", len);
1734 return;
1735 }
1736
1737 /* parse BGP message header */
1738 if (memcmp(p, marker, sizeof(marker))) {
1739 printf("incorrect marker in BGP message\n");
1740 return;
1741 }
1742 p += MSGSIZE_HEADER_MARKER16;
1743
1744 memcpy(&len, p, 2);
1745 len = ntohs(len)(__uint16_t)(__builtin_constant_p(len) ? (__uint16_t)(((__uint16_t
)(len) & 0xffU) << 8 | ((__uint16_t)(len) & 0xff00U
) >> 8) : __swap16md(len));
1746 p += 2;
1747 memcpy(&type, p, 1);
1748 p += 1;
1749
1750 if (len < MSGSIZE_HEADER19 || len > MAX_PKTSIZE4096) {
1751 printf("illegal header length: %u byte\n", len);
1752 return;
1753 }
1754
1755 switch (type) {
1756 case OPEN:
1757 printf("%s ", msgtypenames[type]);
1758 if (len < MSGSIZE_OPEN_MIN29) {
1759 printf("illegal length: %u byte\n", len);
1760 return;
1761 }
1762 show_mrt_open(p, len - MSGSIZE_HEADER19);
1763 break;
1764 case NOTIFICATION:
1765 printf("%s ", msgtypenames[type]);
1766 if (len < MSGSIZE_NOTIFICATION_MIN21) {
1767 printf("illegal length: %u byte\n", len);
1768 return;
1769 }
1770 show_mrt_notification(p, len - MSGSIZE_HEADER19);
1771 break;
1772 case UPDATE:
1773 printf("%s ", msgtypenames[type]);
1774 if (len < MSGSIZE_UPDATE_MIN23) {
1775 printf("illegal length: %u byte\n", len);
1776 return;
1777 }
1778 show_mrt_update(p, len - MSGSIZE_HEADER19, req->flags,
1779 mm->add_path);
1780 break;
1781 case KEEPALIVE:
1782 printf("%s ", msgtypenames[type]);
1783 if (len != MSGSIZE_KEEPALIVE19) {
1784 printf("illegal length: %u byte\n", len);
1785 return;
1786 }
1787 /* nothing */
1788 break;
1789 case RREFRESH:
1790 printf("%s ", msgtypenames[type]);
1791 if (len != MSGSIZE_RREFRESH(19 + 4)) {
1792 printf("illegal length: %u byte\n", len);
1793 return;
1794 }
1795 print_afi(p, len);
1796 break;
1797 default:
1798 printf("unknown type %u\n", type);
1799 return;
1800 }
1801 printf("\n");
1802}
1803
1804const char *
1805msg_type(u_int8_t type)
1806{
1807 if (type >= sizeof(msgtypenames)/sizeof(msgtypenames[0]))
1808 return "BAD";
1809 return (msgtypenames[type]);
1810}
1811
1812int
1813match_aspath(void *data, u_int16_t len, struct filter_as *f)
1814{
1815 u_int8_t *seg;
1816 int final;
1817 u_int16_t seg_size;
1818 u_int8_t i, seg_len;
1819 u_int32_t as = 0;
1820
1821 if (f->type == AS_EMPTY) {
1822 if (len == 0)
1823 return (1);
1824 else
1825 return (0);
1826 }
1827
1828 seg = data;
1829
1830 /* just check the leftmost AS */
1831 if (f->type == AS_PEER && len >= 6) {
1832 as = aspath_extract(seg, 0);
1833 if (f->as_min == as)
1834 return (1);
1835 else
1836 return (0);
1837 }
1838
1839 for (; len >= 6; len -= seg_size, seg += seg_size) {
1840 seg_len = seg[1];
1841 seg_size = 2 + sizeof(u_int32_t) * seg_len;
1842
1843 final = (len == seg_size);
1844
1845 if (f->type == AS_SOURCE) {
1846 /*
1847 * Just extract the rightmost AS
1848 * but if that segment is an AS_SET then the rightmost
1849 * AS of a previous AS_SEQUENCE segment should be used.
1850 * Because of that just look at AS_SEQUENCE segments.
1851 */
1852 if (seg[0] == AS_SEQUENCE2)
1853 as = aspath_extract(seg, seg_len - 1);
1854 /* not yet in the final segment */
1855 if (!final)
1856 continue;
1857 if (f->as_min == as)
1858 return (1);
1859 else
1860 return (0);
1861 }
1862 /* AS_TRANSIT or AS_ALL */
1863 for (i = 0; i < seg_len; i++) {
1864 /*
1865 * the source (rightmost) AS is excluded from
1866 * AS_TRANSIT matches.
1867 */
1868 if (final && i == seg_len - 1 && f->type == AS_TRANSIT)
1869 return (0);
1870 as = aspath_extract(seg, i);
1871 if (f->as_min == as)
1872 return (1);
1873 }
1874 }
1875 return (0);
1876}