]>
Commit | Line | Data |
---|---|---|
718e3744 | 1 | /* BGP-4 dump routine |
896014f4 DL |
2 | * Copyright (C) 1999 Kunihiro Ishiguro |
3 | * | |
4 | * This file is part of GNU Zebra. | |
5 | * | |
6 | * GNU Zebra is free software; you can redistribute it and/or modify it | |
7 | * under the terms of the GNU General Public License as published by the | |
8 | * Free Software Foundation; either version 2, or (at your option) any | |
9 | * later version. | |
10 | * | |
11 | * GNU Zebra is distributed in the hope that it will be useful, but | |
12 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
14 | * General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License along | |
17 | * with this program; see the file COPYING; if not, write to the Free Software | |
18 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
19 | */ | |
718e3744 | 20 | |
21 | #include <zebra.h> | |
22 | ||
23 | #include "log.h" | |
24 | #include "stream.h" | |
25 | #include "sockunion.h" | |
26 | #include "command.h" | |
27 | #include "prefix.h" | |
28 | #include "thread.h" | |
0b2aa3a0 | 29 | #include "linklist.h" |
3f9c7369 | 30 | #include "queue.h" |
6e919709 | 31 | #include "memory.h" |
039f3a34 | 32 | #include "filter.h" |
3f9c7369 | 33 | |
718e3744 | 34 | #include "bgpd/bgp_table.h" |
718e3744 | 35 | #include "bgpd/bgpd.h" |
36 | #include "bgpd/bgp_route.h" | |
37 | #include "bgpd/bgp_attr.h" | |
38 | #include "bgpd/bgp_dump.h" | |
7077f45c | 39 | #include "bgpd/bgp_errors.h" |
584470fb | 40 | #include "bgpd/bgp_packet.h" |
6b0655a2 | 41 | |
d62a17ae | 42 | enum bgp_dump_type { |
43 | BGP_DUMP_ALL, | |
44 | BGP_DUMP_ALL_ET, | |
45 | BGP_DUMP_UPDATES, | |
46 | BGP_DUMP_UPDATES_ET, | |
47 | BGP_DUMP_ROUTES | |
718e3744 | 48 | }; |
49 | ||
4db5d90a | 50 | static const struct bgp_dump_type_map { |
d62a17ae | 51 | enum bgp_dump_type type; |
52 | const char *str; | |
53 | } bgp_dump_type_map[] = { | |
54 | {BGP_DUMP_ALL, "all"}, {BGP_DUMP_ALL_ET, "all-et"}, | |
55 | {BGP_DUMP_UPDATES, "updates"}, {BGP_DUMP_UPDATES_ET, "updates-et"}, | |
56 | {BGP_DUMP_ROUTES, "routes-mrt"}, {0, NULL}, | |
57 | }; | |
4db5d90a | 58 | |
718e3744 | 59 | enum MRT_MSG_TYPES { |
d62a17ae | 60 | MSG_NULL, |
61 | MSG_START, /* sender is starting up */ | |
62 | MSG_DIE, /* receiver should shut down */ | |
63 | MSG_I_AM_DEAD, /* sender is shutting down */ | |
64 | MSG_PEER_DOWN, /* sender's peer is down */ | |
65 | MSG_PROTOCOL_BGP, /* msg is a BGP packet */ | |
66 | MSG_PROTOCOL_RIP, /* msg is a RIP packet */ | |
67 | MSG_PROTOCOL_IDRP, /* msg is an IDRP packet */ | |
68 | MSG_PROTOCOL_RIPNG, /* msg is a RIPNG packet */ | |
69 | MSG_PROTOCOL_BGP4PLUS, /* msg is a BGP4+ packet */ | |
70 | MSG_PROTOCOL_BGP4PLUS_01, /* msg is a BGP4+ (draft 01) packet */ | |
71 | MSG_PROTOCOL_OSPF, /* msg is an OSPF packet */ | |
72 | MSG_TABLE_DUMP, /* routing table dump */ | |
73 | MSG_TABLE_DUMP_V2 /* routing table dump, version 2 */ | |
718e3744 | 74 | }; |
75 | ||
d62a17ae | 76 | struct bgp_dump { |
77 | enum bgp_dump_type type; | |
718e3744 | 78 | |
d62a17ae | 79 | char *filename; |
718e3744 | 80 | |
d62a17ae | 81 | FILE *fp; |
718e3744 | 82 | |
d62a17ae | 83 | unsigned int interval; |
718e3744 | 84 | |
d62a17ae | 85 | char *interval_str; |
718e3744 | 86 | |
d62a17ae | 87 | struct thread *t_interval; |
718e3744 | 88 | }; |
89 | ||
d62a17ae | 90 | static int bgp_dump_unset(struct bgp_dump *bgp_dump); |
91 | static int bgp_dump_interval_func(struct thread *); | |
4db5d90a | 92 | |
718e3744 | 93 | /* BGP packet dump output buffer. */ |
94 | struct stream *bgp_dump_obuf; | |
95 | ||
96 | /* BGP dump strucuture for 'dump bgp all' */ | |
97 | struct bgp_dump bgp_dump_all; | |
98 | ||
99 | /* BGP dump structure for 'dump bgp updates' */ | |
100 | struct bgp_dump bgp_dump_updates; | |
101 | ||
102 | /* BGP dump structure for 'dump bgp routes' */ | |
103 | struct bgp_dump bgp_dump_routes; | |
104 | ||
d62a17ae | 105 | static FILE *bgp_dump_open_file(struct bgp_dump *bgp_dump) |
718e3744 | 106 | { |
d62a17ae | 107 | int ret; |
108 | time_t clock; | |
a2700b50 | 109 | struct tm tm; |
d62a17ae | 110 | char fullpath[MAXPATHLEN]; |
111 | char realpath[MAXPATHLEN]; | |
112 | mode_t oldumask; | |
113 | ||
114 | time(&clock); | |
a2700b50 | 115 | localtime_r(&clock, &tm); |
d62a17ae | 116 | |
117 | if (bgp_dump->filename[0] != DIRECTORY_SEP) { | |
772270f3 QY |
118 | snprintf(fullpath, sizeof(fullpath), "%s/%s", vty_get_cwd(), |
119 | bgp_dump->filename); | |
a2700b50 | 120 | ret = strftime(realpath, MAXPATHLEN, fullpath, &tm); |
d62a17ae | 121 | } else |
a2700b50 | 122 | ret = strftime(realpath, MAXPATHLEN, bgp_dump->filename, &tm); |
d62a17ae | 123 | |
124 | if (ret == 0) { | |
e50f7cfd | 125 | flog_warn(EC_BGP_DUMP, "bgp_dump_open_file: strftime error"); |
d62a17ae | 126 | return NULL; |
127 | } | |
718e3744 | 128 | |
d62a17ae | 129 | if (bgp_dump->fp) |
130 | fclose(bgp_dump->fp); | |
718e3744 | 131 | |
132 | ||
d62a17ae | 133 | oldumask = umask(0777 & ~LOGFILE_MASK); |
134 | bgp_dump->fp = fopen(realpath, "w"); | |
718e3744 | 135 | |
d62a17ae | 136 | if (bgp_dump->fp == NULL) { |
e50f7cfd | 137 | flog_warn(EC_BGP_DUMP, "bgp_dump_open_file: %s: %s", realpath, |
d62a17ae | 138 | strerror(errno)); |
139 | umask(oldumask); | |
140 | return NULL; | |
141 | } | |
142 | umask(oldumask); | |
718e3744 | 143 | |
d62a17ae | 144 | return bgp_dump->fp; |
718e3744 | 145 | } |
146 | ||
d62a17ae | 147 | static int bgp_dump_interval_add(struct bgp_dump *bgp_dump, int interval) |
718e3744 | 148 | { |
d62a17ae | 149 | int secs_into_day; |
150 | time_t t; | |
a2700b50 | 151 | struct tm tm; |
d62a17ae | 152 | |
153 | if (interval > 0) { | |
154 | /* Periodic dump every interval seconds */ | |
155 | if ((interval < 86400) && ((86400 % interval) == 0)) { | |
156 | /* Dump at predictable times: if a day has a whole | |
157 | * number of | |
158 | * intervals, dump every interval seconds starting from | |
159 | * midnight | |
160 | */ | |
161 | (void)time(&t); | |
a2700b50 MS |
162 | localtime_r(&t, &tm); |
163 | secs_into_day = tm.tm_sec + 60 * tm.tm_min | |
164 | + 60 * 60 * tm.tm_hour; | |
d62a17ae | 165 | interval = interval |
166 | - secs_into_day % interval; /* always > 0 */ | |
167 | } | |
168 | bgp_dump->t_interval = NULL; | |
169 | thread_add_timer(bm->master, bgp_dump_interval_func, bgp_dump, | |
170 | interval, &bgp_dump->t_interval); | |
171 | } else { | |
172 | /* One-off dump: execute immediately, don't affect any scheduled | |
173 | * dumps */ | |
174 | bgp_dump->t_interval = NULL; | |
175 | thread_add_event(bm->master, bgp_dump_interval_func, bgp_dump, | |
176 | 0, &bgp_dump->t_interval); | |
9834cd0f | 177 | } |
fba3d22b | 178 | |
d62a17ae | 179 | return 0; |
718e3744 | 180 | } |
181 | ||
182 | /* Dump common header. */ | |
d62a17ae | 183 | static void bgp_dump_header(struct stream *obuf, int type, int subtype, |
184 | int dump_type) | |
718e3744 | 185 | { |
d62a17ae | 186 | struct timeval clock; |
187 | long msecs; | |
188 | time_t secs; | |
4db5d90a | 189 | |
d62a17ae | 190 | if ((dump_type == BGP_DUMP_ALL_ET || dump_type == BGP_DUMP_UPDATES_ET) |
191 | && type == MSG_PROTOCOL_BGP4MP) | |
192 | type = MSG_PROTOCOL_BGP4MP_ET; | |
4db5d90a | 193 | |
d62a17ae | 194 | gettimeofday(&clock, NULL); |
718e3744 | 195 | |
d62a17ae | 196 | secs = clock.tv_sec; |
197 | msecs = clock.tv_usec; | |
718e3744 | 198 | |
d62a17ae | 199 | /* Put dump packet header. */ |
200 | stream_putl(obuf, secs); | |
201 | stream_putw(obuf, type); | |
202 | stream_putw(obuf, subtype); | |
203 | stream_putl(obuf, 0); /* len */ | |
4db5d90a | 204 | |
d62a17ae | 205 | /* Adding microseconds for the MRT Extended Header */ |
206 | if (type == MSG_PROTOCOL_BGP4MP_ET) | |
207 | stream_putl(obuf, msecs); | |
718e3744 | 208 | } |
209 | ||
d62a17ae | 210 | static void bgp_dump_set_size(struct stream *s, int type) |
718e3744 | 211 | { |
d62a17ae | 212 | /* |
213 | * The BGP_DUMP_HEADER_SIZE stay at 12 event when ET: | |
214 | * "The Microsecond Timestamp is included in the computation | |
215 | * of the Length field value." (RFC6396 2011) | |
216 | */ | |
217 | stream_putl_at(s, 8, stream_get_endp(s) - BGP_DUMP_HEADER_SIZE); | |
718e3744 | 218 | } |
219 | ||
d62a17ae | 220 | static void bgp_dump_routes_index_table(struct bgp *bgp) |
718e3744 | 221 | { |
d62a17ae | 222 | struct peer *peer; |
223 | struct listnode *node; | |
224 | uint16_t peerno = 1; | |
225 | struct stream *obuf; | |
226 | ||
227 | obuf = bgp_dump_obuf; | |
228 | stream_reset(obuf); | |
229 | ||
230 | /* MRT header */ | |
231 | bgp_dump_header(obuf, MSG_TABLE_DUMP_V2, TABLE_DUMP_V2_PEER_INDEX_TABLE, | |
232 | BGP_DUMP_ROUTES); | |
233 | ||
234 | /* Collector BGP ID */ | |
235 | stream_put_in_addr(obuf, &bgp->router_id); | |
236 | ||
237 | /* View name */ | |
8c1a4c10 DS |
238 | if (bgp->name_pretty) { |
239 | stream_putw(obuf, strlen(bgp->name_pretty)); | |
240 | stream_put(obuf, bgp->name_pretty, strlen(bgp->name_pretty)); | |
d62a17ae | 241 | } else { |
242 | stream_putw(obuf, 0); | |
243 | } | |
718e3744 | 244 | |
d62a17ae | 245 | /* Peer count ( plus one extra internal peer ) */ |
246 | stream_putw(obuf, listcount(bgp->peer) + 1); | |
247 | ||
248 | /* Populate fake peer at index 0, for locally originated routes */ | |
249 | /* Peer type (IPv4) */ | |
9d303b37 DL |
250 | stream_putc(obuf, |
251 | TABLE_DUMP_V2_PEER_INDEX_TABLE_AS4 | |
252 | + TABLE_DUMP_V2_PEER_INDEX_TABLE_IP); | |
d62a17ae | 253 | /* Peer BGP ID (0.0.0.0) */ |
254 | stream_putl(obuf, 0); | |
255 | /* Peer IP address (0.0.0.0) */ | |
256 | stream_putl(obuf, 0); | |
257 | /* Peer ASN (0) */ | |
258 | stream_putl(obuf, 0); | |
259 | ||
260 | /* Walk down all peers */ | |
261 | for (ALL_LIST_ELEMENTS_RO(bgp->peer, node, peer)) { | |
262 | ||
263 | /* Peer's type */ | |
264 | if (sockunion_family(&peer->su) == AF_INET) { | |
265 | stream_putc( | |
266 | obuf, | |
267 | TABLE_DUMP_V2_PEER_INDEX_TABLE_AS4 | |
268 | + TABLE_DUMP_V2_PEER_INDEX_TABLE_IP); | |
269 | } else if (sockunion_family(&peer->su) == AF_INET6) { | |
270 | stream_putc( | |
271 | obuf, | |
272 | TABLE_DUMP_V2_PEER_INDEX_TABLE_AS4 | |
273 | + TABLE_DUMP_V2_PEER_INDEX_TABLE_IP6); | |
274 | } | |
275 | ||
276 | /* Peer's BGP ID */ | |
277 | stream_put_in_addr(obuf, &peer->remote_id); | |
278 | ||
279 | /* Peer's IP address */ | |
280 | if (sockunion_family(&peer->su) == AF_INET) { | |
281 | stream_put_in_addr(obuf, &peer->su.sin.sin_addr); | |
282 | } else if (sockunion_family(&peer->su) == AF_INET6) { | |
d7c0a89a | 283 | stream_write(obuf, (uint8_t *)&peer->su.sin6.sin6_addr, |
d62a17ae | 284 | IPV6_MAX_BYTELEN); |
285 | } | |
286 | ||
287 | /* Peer's AS number. */ | |
288 | /* Note that, as this is an AS4 compliant quagga, the RIB is | |
289 | * always AS4 */ | |
290 | stream_putl(obuf, peer->as); | |
291 | ||
292 | /* Store the peer number for this peer */ | |
293 | peer->table_dump_index = peerno; | |
294 | peerno++; | |
295 | } | |
718e3744 | 296 | |
d62a17ae | 297 | bgp_dump_set_size(obuf, MSG_TABLE_DUMP_V2); |
718e3744 | 298 | |
d62a17ae | 299 | fwrite(STREAM_DATA(obuf), stream_get_endp(obuf), 1, bgp_dump_routes.fp); |
300 | fflush(bgp_dump_routes.fp); | |
718e3744 | 301 | } |
302 | ||
0b2aa3a0 | 303 | |
4b7e6066 DS |
304 | static struct bgp_path_info * |
305 | bgp_dump_route_node_record(int afi, struct bgp_node *rn, | |
40381db7 | 306 | struct bgp_path_info *path, unsigned int seq) |
246556b5 | 307 | { |
d62a17ae | 308 | struct stream *obuf; |
309 | size_t sizep; | |
310 | size_t endp; | |
b54892e0 | 311 | const struct prefix *p = bgp_node_get_prefix(rn); |
d62a17ae | 312 | |
313 | obuf = bgp_dump_obuf; | |
314 | stream_reset(obuf); | |
315 | ||
316 | /* MRT header */ | |
317 | if (afi == AFI_IP) | |
318 | bgp_dump_header(obuf, MSG_TABLE_DUMP_V2, | |
319 | TABLE_DUMP_V2_RIB_IPV4_UNICAST, | |
320 | BGP_DUMP_ROUTES); | |
321 | else if (afi == AFI_IP6) | |
322 | bgp_dump_header(obuf, MSG_TABLE_DUMP_V2, | |
323 | TABLE_DUMP_V2_RIB_IPV6_UNICAST, | |
324 | BGP_DUMP_ROUTES); | |
325 | ||
326 | /* Sequence number */ | |
327 | stream_putl(obuf, seq); | |
328 | ||
329 | /* Prefix length */ | |
b54892e0 | 330 | stream_putc(obuf, p->prefixlen); |
d62a17ae | 331 | |
332 | /* Prefix */ | |
333 | if (afi == AFI_IP) { | |
334 | /* We'll dump only the useful bits (those not 0), but have to | |
335 | * align on 8 bits */ | |
b54892e0 DS |
336 | stream_write(obuf, (uint8_t *)&p->u.prefix4, |
337 | (p->prefixlen + 7) / 8); | |
d62a17ae | 338 | } else if (afi == AFI_IP6) { |
339 | /* We'll dump only the useful bits (those not 0), but have to | |
340 | * align on 8 bits */ | |
b54892e0 DS |
341 | stream_write(obuf, (uint8_t *)&p->u.prefix6, |
342 | (p->prefixlen + 7) / 8); | |
d62a17ae | 343 | } |
246556b5 | 344 | |
d62a17ae | 345 | /* Save where we are now, so we can overwride the entry count later */ |
346 | sizep = stream_get_endp(obuf); | |
246556b5 | 347 | |
d62a17ae | 348 | /* Entry count */ |
349 | uint16_t entry_count = 0; | |
246556b5 | 350 | |
d62a17ae | 351 | /* Entry count, note that this is overwritten later */ |
352 | stream_putw(obuf, 0); | |
246556b5 | 353 | |
d62a17ae | 354 | endp = stream_get_endp(obuf); |
40381db7 | 355 | for (; path; path = path->next) { |
d62a17ae | 356 | size_t cur_endp; |
246556b5 | 357 | |
d62a17ae | 358 | /* Peer index */ |
40381db7 | 359 | stream_putw(obuf, path->peer->table_dump_index); |
246556b5 | 360 | |
d62a17ae | 361 | /* Originated */ |
40381db7 | 362 | stream_putl(obuf, time(NULL) - (bgp_clock() - path->uptime)); |
246556b5 | 363 | |
d62a17ae | 364 | /* Dump attribute. */ |
365 | /* Skip prefix & AFI/SAFI for MP_NLRI */ | |
b54892e0 | 366 | bgp_dump_routes_attr(obuf, path->attr, p); |
246556b5 | 367 | |
d62a17ae | 368 | cur_endp = stream_get_endp(obuf); |
369 | if (cur_endp > BGP_MAX_PACKET_SIZE + BGP_DUMP_MSG_HEADER | |
370 | + BGP_DUMP_HEADER_SIZE) { | |
371 | stream_set_endp(obuf, endp); | |
372 | break; | |
373 | } | |
246556b5 | 374 | |
d62a17ae | 375 | entry_count++; |
376 | endp = cur_endp; | |
377 | } | |
246556b5 | 378 | |
d62a17ae | 379 | /* Overwrite the entry count, now that we know the right number */ |
380 | stream_putw_at(obuf, sizep, entry_count); | |
246556b5 | 381 | |
d62a17ae | 382 | bgp_dump_set_size(obuf, MSG_TABLE_DUMP_V2); |
383 | fwrite(STREAM_DATA(obuf), stream_get_endp(obuf), 1, bgp_dump_routes.fp); | |
246556b5 | 384 | |
40381db7 | 385 | return path; |
246556b5 EU |
386 | } |
387 | ||
388 | ||
718e3744 | 389 | /* Runs under child process. */ |
d62a17ae | 390 | static unsigned int bgp_dump_routes_func(int afi, int first_run, |
391 | unsigned int seq) | |
718e3744 | 392 | { |
40381db7 | 393 | struct bgp_path_info *path; |
d62a17ae | 394 | struct bgp_node *rn; |
395 | struct bgp *bgp; | |
396 | struct bgp_table *table; | |
397 | ||
398 | bgp = bgp_get_default(); | |
399 | if (!bgp) | |
400 | return seq; | |
401 | ||
402 | if (bgp_dump_routes.fp == NULL) | |
403 | return seq; | |
404 | ||
405 | /* Note that bgp_dump_routes_index_table will do ipv4 and ipv6 peers, | |
406 | so this should only be done on the first call to | |
407 | bgp_dump_routes_func. | |
408 | ( this function will be called once for ipv4 and once for ipv6 ) */ | |
409 | if (first_run) | |
410 | bgp_dump_routes_index_table(bgp); | |
411 | ||
412 | /* Walk down each BGP route. */ | |
413 | table = bgp->rib[afi][SAFI_UNICAST]; | |
414 | ||
415 | for (rn = bgp_table_top(table); rn; rn = bgp_route_next(rn)) { | |
6f94b685 | 416 | path = bgp_node_get_bgp_path_info(rn); |
40381db7 DS |
417 | while (path) { |
418 | path = bgp_dump_route_node_record(afi, rn, path, seq); | |
d62a17ae | 419 | seq++; |
420 | } | |
421 | } | |
0b2aa3a0 | 422 | |
d62a17ae | 423 | fflush(bgp_dump_routes.fp); |
0b2aa3a0 | 424 | |
d62a17ae | 425 | return seq; |
718e3744 | 426 | } |
427 | ||
d62a17ae | 428 | static int bgp_dump_interval_func(struct thread *t) |
718e3744 | 429 | { |
d62a17ae | 430 | struct bgp_dump *bgp_dump; |
431 | bgp_dump = THREAD_ARG(t); | |
432 | bgp_dump->t_interval = NULL; | |
433 | ||
434 | /* Reschedule dump even if file couldn't be opened this time... */ | |
435 | if (bgp_dump_open_file(bgp_dump) != NULL) { | |
436 | /* In case of bgp_dump_routes, we need special route dump | |
437 | * function. */ | |
438 | if (bgp_dump->type == BGP_DUMP_ROUTES) { | |
439 | unsigned int seq = bgp_dump_routes_func(AFI_IP, 1, 0); | |
440 | bgp_dump_routes_func(AFI_IP6, 0, seq); | |
441 | /* Close the file now. For a RIB dump there's no point | |
442 | * in leaving | |
443 | * it open until the next scheduled dump starts. */ | |
444 | fclose(bgp_dump->fp); | |
445 | bgp_dump->fp = NULL; | |
446 | } | |
9834cd0f | 447 | } |
718e3744 | 448 | |
d62a17ae | 449 | /* if interval is set reschedule */ |
450 | if (bgp_dump->interval > 0) | |
451 | bgp_dump_interval_add(bgp_dump, bgp_dump->interval); | |
fba3d22b | 452 | |
d62a17ae | 453 | return 0; |
718e3744 | 454 | } |
455 | ||
456 | /* Dump common information. */ | |
d62a17ae | 457 | static void bgp_dump_common(struct stream *obuf, struct peer *peer, |
458 | int forceas4) | |
718e3744 | 459 | { |
d62a17ae | 460 | char empty[16] = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}; |
461 | ||
462 | /* Source AS number and Destination AS number. */ | |
463 | if (forceas4 || CHECK_FLAG(peer->cap, PEER_CAP_AS4_RCV)) { | |
464 | stream_putl(obuf, peer->as); | |
465 | stream_putl(obuf, peer->local_as); | |
466 | } else { | |
467 | stream_putw(obuf, peer->as); | |
468 | stream_putw(obuf, peer->local_as); | |
469 | } | |
718e3744 | 470 | |
d62a17ae | 471 | if (peer->su.sa.sa_family == AF_INET) { |
194a4f2c | 472 | stream_putw(obuf, peer->ifp ? peer->ifp->ifindex : 0); |
d62a17ae | 473 | stream_putw(obuf, AFI_IP); |
474 | ||
475 | stream_put(obuf, &peer->su.sin.sin_addr, IPV4_MAX_BYTELEN); | |
476 | ||
477 | if (peer->su_local) | |
478 | stream_put(obuf, &peer->su_local->sin.sin_addr, | |
479 | IPV4_MAX_BYTELEN); | |
480 | else | |
481 | stream_put(obuf, empty, IPV4_MAX_BYTELEN); | |
482 | } else if (peer->su.sa.sa_family == AF_INET6) { | |
483 | /* Interface Index and Address family. */ | |
194a4f2c | 484 | stream_putw(obuf, peer->ifp ? peer->ifp->ifindex : 0); |
d62a17ae | 485 | stream_putw(obuf, AFI_IP6); |
486 | ||
487 | /* Source IP Address and Destination IP Address. */ | |
488 | stream_put(obuf, &peer->su.sin6.sin6_addr, IPV6_MAX_BYTELEN); | |
489 | ||
490 | if (peer->su_local) | |
491 | stream_put(obuf, &peer->su_local->sin6.sin6_addr, | |
492 | IPV6_MAX_BYTELEN); | |
493 | else | |
494 | stream_put(obuf, empty, IPV6_MAX_BYTELEN); | |
495 | } | |
718e3744 | 496 | } |
497 | ||
498 | /* Dump BGP status change. */ | |
7d8d0eab | 499 | int bgp_dump_state(struct peer *peer) |
718e3744 | 500 | { |
d62a17ae | 501 | struct stream *obuf; |
718e3744 | 502 | |
d62a17ae | 503 | /* If dump file pointer is disabled return immediately. */ |
504 | if (bgp_dump_all.fp == NULL) | |
7d8d0eab | 505 | return 0; |
718e3744 | 506 | |
d62a17ae | 507 | /* Make dump stream. */ |
508 | obuf = bgp_dump_obuf; | |
509 | stream_reset(obuf); | |
718e3744 | 510 | |
d62a17ae | 511 | bgp_dump_header(obuf, MSG_PROTOCOL_BGP4MP, BGP4MP_STATE_CHANGE_AS4, |
512 | bgp_dump_all.type); | |
513 | bgp_dump_common(obuf, peer, 1); /* force this in as4speak*/ | |
718e3744 | 514 | |
7d8d0eab MKS |
515 | stream_putw(obuf, peer->ostatus); |
516 | stream_putw(obuf, peer->status); | |
718e3744 | 517 | |
d62a17ae | 518 | /* Set length. */ |
519 | bgp_dump_set_size(obuf, MSG_PROTOCOL_BGP4MP); | |
718e3744 | 520 | |
d62a17ae | 521 | /* Write to the stream. */ |
522 | fwrite(STREAM_DATA(obuf), stream_get_endp(obuf), 1, bgp_dump_all.fp); | |
523 | fflush(bgp_dump_all.fp); | |
7d8d0eab | 524 | return 0; |
718e3744 | 525 | } |
526 | ||
d62a17ae | 527 | static void bgp_dump_packet_func(struct bgp_dump *bgp_dump, struct peer *peer, |
528 | struct stream *packet) | |
718e3744 | 529 | { |
d62a17ae | 530 | struct stream *obuf; |
531 | ||
532 | /* If dump file pointer is disabled return immediately. */ | |
533 | if (bgp_dump->fp == NULL) | |
534 | return; | |
535 | ||
536 | /* Make dump stream. */ | |
537 | obuf = bgp_dump_obuf; | |
538 | stream_reset(obuf); | |
539 | ||
540 | /* Dump header and common part. */ | |
541 | if (CHECK_FLAG(peer->cap, PEER_CAP_AS4_RCV)) { | |
542 | bgp_dump_header(obuf, MSG_PROTOCOL_BGP4MP, BGP4MP_MESSAGE_AS4, | |
543 | bgp_dump->type); | |
544 | } else { | |
545 | bgp_dump_header(obuf, MSG_PROTOCOL_BGP4MP, BGP4MP_MESSAGE, | |
546 | bgp_dump->type); | |
547 | } | |
548 | bgp_dump_common(obuf, peer, 0); | |
718e3744 | 549 | |
d62a17ae | 550 | /* Packet contents. */ |
551 | stream_put(obuf, STREAM_DATA(packet), stream_get_endp(packet)); | |
718e3744 | 552 | |
d62a17ae | 553 | /* Set length. */ |
554 | bgp_dump_set_size(obuf, MSG_PROTOCOL_BGP4MP); | |
718e3744 | 555 | |
d62a17ae | 556 | /* Write to the stream. */ |
557 | fwrite(STREAM_DATA(obuf), stream_get_endp(obuf), 1, bgp_dump->fp); | |
558 | fflush(bgp_dump->fp); | |
718e3744 | 559 | } |
560 | ||
561 | /* Called from bgp_packet.c when BGP packet is received. */ | |
584470fb DL |
562 | static int bgp_dump_packet(struct peer *peer, uint8_t type, bgp_size_t size, |
563 | struct stream *packet) | |
718e3744 | 564 | { |
d62a17ae | 565 | /* bgp_dump_all. */ |
566 | bgp_dump_packet_func(&bgp_dump_all, peer, packet); | |
718e3744 | 567 | |
d62a17ae | 568 | /* bgp_dump_updates. */ |
569 | if (type == BGP_MSG_UPDATE) | |
570 | bgp_dump_packet_func(&bgp_dump_updates, peer, packet); | |
584470fb | 571 | return 0; |
718e3744 | 572 | } |
6b0655a2 | 573 | |
d62a17ae | 574 | static unsigned int bgp_dump_parse_time(const char *str) |
718e3744 | 575 | { |
d62a17ae | 576 | int i; |
577 | int len; | |
578 | int seen_h; | |
579 | int seen_m; | |
580 | int time; | |
581 | unsigned int total; | |
582 | ||
583 | time = 0; | |
584 | total = 0; | |
585 | seen_h = 0; | |
586 | seen_m = 0; | |
587 | len = strlen(str); | |
588 | ||
589 | for (i = 0; i < len; i++) { | |
fefa5e0f | 590 | if (isdigit((unsigned char)str[i])) { |
d62a17ae | 591 | time *= 10; |
592 | time += str[i] - '0'; | |
593 | } else if (str[i] == 'H' || str[i] == 'h') { | |
594 | if (seen_h) | |
595 | return 0; | |
596 | if (seen_m) | |
597 | return 0; | |
598 | total += time * 60 * 60; | |
599 | time = 0; | |
600 | seen_h = 1; | |
601 | } else if (str[i] == 'M' || str[i] == 'm') { | |
602 | if (seen_m) | |
603 | return 0; | |
604 | total += time * 60; | |
605 | time = 0; | |
606 | seen_m = 1; | |
607 | } else | |
608 | return 0; | |
718e3744 | 609 | } |
d62a17ae | 610 | return total + time; |
718e3744 | 611 | } |
612 | ||
d62a17ae | 613 | static int bgp_dump_set(struct vty *vty, struct bgp_dump *bgp_dump, |
614 | enum bgp_dump_type type, const char *path, | |
615 | const char *interval_str) | |
718e3744 | 616 | { |
d62a17ae | 617 | unsigned int interval; |
618 | ||
619 | /* Don't schedule duplicate dumps if the dump command is given twice */ | |
620 | if (bgp_dump->filename && strcmp(path, bgp_dump->filename) == 0 | |
621 | && type == bgp_dump->type) { | |
622 | if (interval_str) { | |
623 | if (bgp_dump->interval_str | |
624 | && strcmp(bgp_dump->interval_str, interval_str) | |
625 | == 0) | |
626 | return CMD_SUCCESS; | |
627 | } else { | |
628 | if (!bgp_dump->interval_str) | |
629 | return CMD_SUCCESS; | |
630 | } | |
718e3744 | 631 | } |
45ad592e | 632 | |
d62a17ae | 633 | /* Removing previous config */ |
634 | bgp_dump_unset(bgp_dump); | |
635 | ||
636 | if (interval_str) { | |
637 | /* Check interval string. */ | |
638 | interval = bgp_dump_parse_time(interval_str); | |
639 | if (interval == 0) { | |
640 | vty_out(vty, "Malformed interval string\n"); | |
641 | return CMD_WARNING_CONFIG_FAILED; | |
642 | } | |
643 | ||
644 | /* Setting interval string */ | |
645 | bgp_dump->interval_str = | |
646 | XSTRDUP(MTYPE_BGP_DUMP_STR, interval_str); | |
647 | } else { | |
648 | interval = 0; | |
649 | } | |
718e3744 | 650 | |
d62a17ae | 651 | /* Set type. */ |
652 | bgp_dump->type = type; | |
718e3744 | 653 | |
d62a17ae | 654 | /* Set interval */ |
655 | bgp_dump->interval = interval; | |
4db5d90a | 656 | |
d62a17ae | 657 | /* Set file name. */ |
658 | bgp_dump->filename = XSTRDUP(MTYPE_BGP_DUMP_STR, path); | |
4db5d90a | 659 | |
d62a17ae | 660 | /* Create interval thread. */ |
661 | bgp_dump_interval_add(bgp_dump, interval); | |
718e3744 | 662 | |
d62a17ae | 663 | /* This should be called when interval is expired. */ |
664 | bgp_dump_open_file(bgp_dump); | |
718e3744 | 665 | |
d62a17ae | 666 | return CMD_SUCCESS; |
718e3744 | 667 | } |
668 | ||
d62a17ae | 669 | static int bgp_dump_unset(struct bgp_dump *bgp_dump) |
718e3744 | 670 | { |
d62a17ae | 671 | /* Removing file name. */ |
e1b36e13 | 672 | XFREE(MTYPE_BGP_DUMP_STR, bgp_dump->filename); |
718e3744 | 673 | |
d62a17ae | 674 | /* Closing file. */ |
675 | if (bgp_dump->fp) { | |
676 | fclose(bgp_dump->fp); | |
677 | bgp_dump->fp = NULL; | |
678 | } | |
718e3744 | 679 | |
d62a17ae | 680 | /* Removing interval thread. */ |
681 | if (bgp_dump->t_interval) { | |
682 | thread_cancel(bgp_dump->t_interval); | |
683 | bgp_dump->t_interval = NULL; | |
684 | } | |
718e3744 | 685 | |
d62a17ae | 686 | bgp_dump->interval = 0; |
718e3744 | 687 | |
d62a17ae | 688 | /* Removing interval string. */ |
e1b36e13 | 689 | XFREE(MTYPE_BGP_DUMP_STR, bgp_dump->interval_str); |
d62a17ae | 690 | |
691 | return CMD_SUCCESS; | |
718e3744 | 692 | } |
693 | ||
694 | DEFUN (dump_bgp_all, | |
695 | dump_bgp_all_cmd, | |
6147e2c6 | 696 | "dump bgp <all|all-et|updates|updates-et|routes-mrt> PATH [INTERVAL]", |
718e3744 | 697 | "Dump packet\n" |
698 | "BGP packet dump\n" | |
cbac2b1b EU |
699 | "Dump all BGP packets\nDump all BGP packets (Extended Timestamp Header)\n" |
700 | "Dump BGP updates only\nDump BGP updates only (Extended Timestamp Header)\n" | |
4db5d90a | 701 | "Dump whole BGP routing table\n" |
718e3744 | 702 | "Output filename\n" |
703 | "Interval of output\n") | |
704 | { | |
d62a17ae | 705 | int idx_dump_routes = 2; |
706 | int idx_path = 3; | |
707 | int idx_interval = 4; | |
708 | int bgp_dump_type = 0; | |
709 | const char *interval = NULL; | |
710 | struct bgp_dump *bgp_dump_struct = NULL; | |
711 | const struct bgp_dump_type_map *map = NULL; | |
712 | ||
713 | for (map = bgp_dump_type_map; map->str; map++) | |
714 | if (strmatch(argv[idx_dump_routes]->text, map->str)) | |
715 | bgp_dump_type = map->type; | |
716 | ||
717 | switch (bgp_dump_type) { | |
718 | case BGP_DUMP_ALL: | |
719 | case BGP_DUMP_ALL_ET: | |
720 | bgp_dump_struct = &bgp_dump_all; | |
721 | break; | |
722 | case BGP_DUMP_UPDATES: | |
723 | case BGP_DUMP_UPDATES_ET: | |
724 | bgp_dump_struct = &bgp_dump_updates; | |
725 | break; | |
726 | case BGP_DUMP_ROUTES: | |
727 | default: | |
728 | bgp_dump_struct = &bgp_dump_routes; | |
729 | break; | |
730 | } | |
718e3744 | 731 | |
d62a17ae | 732 | /* When an interval is given */ |
733 | if (argc == idx_interval + 1) | |
734 | interval = argv[idx_interval]->arg; | |
718e3744 | 735 | |
d62a17ae | 736 | return bgp_dump_set(vty, bgp_dump_struct, bgp_dump_type, |
737 | argv[idx_path]->arg, interval); | |
718e3744 | 738 | } |
739 | ||
4db5d90a AF |
740 | DEFUN (no_dump_bgp_all, |
741 | no_dump_bgp_all_cmd, | |
37bc45eb | 742 | "no dump bgp <all|all-et|updates|updates-et|routes-mrt> [PATH [INTERVAL]]", |
718e3744 | 743 | NO_STR |
4db5d90a AF |
744 | "Stop dump packet\n" |
745 | "Stop BGP packet dump\n" | |
ca492402 DS |
746 | "Stop dump process all\n" |
747 | "Stop dump process all-et\n" | |
748 | "Stop dump process updates\n" | |
749 | "Stop dump process updates-et\n" | |
3a2d747c QY |
750 | "Stop dump process route-mrt\n" |
751 | "Output filename\n" | |
752 | "Interval of output\n") | |
718e3744 | 753 | { |
d62a17ae | 754 | int idx_dump_routes = 3; |
755 | int bgp_dump_type = 0; | |
756 | const struct bgp_dump_type_map *map = NULL; | |
757 | struct bgp_dump *bgp_dump_struct = NULL; | |
758 | ||
759 | for (map = bgp_dump_type_map; map->str; map++) | |
760 | if (strmatch(argv[idx_dump_routes]->text, map->str)) | |
761 | bgp_dump_type = map->type; | |
762 | ||
763 | switch (bgp_dump_type) { | |
764 | case BGP_DUMP_ALL: | |
765 | case BGP_DUMP_ALL_ET: | |
766 | bgp_dump_struct = &bgp_dump_all; | |
767 | break; | |
768 | case BGP_DUMP_UPDATES: | |
769 | case BGP_DUMP_UPDATES_ET: | |
770 | bgp_dump_struct = &bgp_dump_updates; | |
771 | break; | |
772 | case BGP_DUMP_ROUTES: | |
773 | default: | |
774 | bgp_dump_struct = &bgp_dump_routes; | |
775 | break; | |
776 | } | |
ca492402 | 777 | |
d62a17ae | 778 | return bgp_dump_unset(bgp_dump_struct); |
718e3744 | 779 | } |
780 | ||
612c2c15 | 781 | static int config_write_bgp_dump(struct vty *vty); |
718e3744 | 782 | /* BGP node structure. */ |
62b346ee | 783 | static struct cmd_node bgp_dump_node = { |
f4b8291f | 784 | .name = "dump", |
62b346ee DL |
785 | .node = DUMP_NODE, |
786 | .prompt = "", | |
612c2c15 | 787 | .config_write = config_write_bgp_dump, |
62b346ee | 788 | }; |
718e3744 | 789 | |
d62a17ae | 790 | static int config_write_bgp_dump(struct vty *vty) |
718e3744 | 791 | { |
d62a17ae | 792 | if (bgp_dump_all.filename) { |
793 | const char *type_str = "all"; | |
794 | if (bgp_dump_all.type == BGP_DUMP_ALL_ET) | |
795 | type_str = "all-et"; | |
796 | ||
797 | if (bgp_dump_all.interval_str) | |
798 | vty_out(vty, "dump bgp %s %s %s\n", type_str, | |
799 | bgp_dump_all.filename, | |
800 | bgp_dump_all.interval_str); | |
801 | else | |
802 | vty_out(vty, "dump bgp %s %s\n", type_str, | |
803 | bgp_dump_all.filename); | |
804 | } | |
805 | if (bgp_dump_updates.filename) { | |
806 | const char *type_str = "updates"; | |
807 | if (bgp_dump_updates.type == BGP_DUMP_UPDATES_ET) | |
808 | type_str = "updates-et"; | |
809 | ||
810 | if (bgp_dump_updates.interval_str) | |
811 | vty_out(vty, "dump bgp %s %s %s\n", type_str, | |
812 | bgp_dump_updates.filename, | |
813 | bgp_dump_updates.interval_str); | |
814 | else | |
815 | vty_out(vty, "dump bgp %s %s\n", type_str, | |
816 | bgp_dump_updates.filename); | |
817 | } | |
818 | if (bgp_dump_routes.filename) { | |
819 | if (bgp_dump_routes.interval_str) | |
820 | vty_out(vty, "dump bgp routes-mrt %s %s\n", | |
821 | bgp_dump_routes.filename, | |
822 | bgp_dump_routes.interval_str); | |
823 | else | |
824 | vty_out(vty, "dump bgp routes-mrt %s\n", | |
825 | bgp_dump_routes.filename); | |
826 | } | |
827 | return 0; | |
718e3744 | 828 | } |
6b0655a2 | 829 | |
718e3744 | 830 | /* Initialize BGP packet dump functionality. */ |
d62a17ae | 831 | void bgp_dump_init(void) |
718e3744 | 832 | { |
d62a17ae | 833 | memset(&bgp_dump_all, 0, sizeof(struct bgp_dump)); |
834 | memset(&bgp_dump_updates, 0, sizeof(struct bgp_dump)); | |
835 | memset(&bgp_dump_routes, 0, sizeof(struct bgp_dump)); | |
718e3744 | 836 | |
d62a17ae | 837 | bgp_dump_obuf = |
838 | stream_new((BGP_MAX_PACKET_SIZE << 1) + BGP_DUMP_MSG_HEADER | |
839 | + BGP_DUMP_HEADER_SIZE); | |
718e3744 | 840 | |
612c2c15 | 841 | install_node(&bgp_dump_node); |
718e3744 | 842 | |
d62a17ae | 843 | install_element(CONFIG_NODE, &dump_bgp_all_cmd); |
844 | install_element(CONFIG_NODE, &no_dump_bgp_all_cmd); | |
584470fb DL |
845 | |
846 | hook_register(bgp_packet_dump, bgp_dump_packet); | |
7d8d0eab | 847 | hook_register(peer_status_changed, bgp_dump_state); |
718e3744 | 848 | } |
228da428 | 849 | |
d62a17ae | 850 | void bgp_dump_finish(void) |
228da428 | 851 | { |
d62a17ae | 852 | bgp_dump_unset(&bgp_dump_all); |
853 | bgp_dump_unset(&bgp_dump_updates); | |
854 | bgp_dump_unset(&bgp_dump_routes); | |
b8438f6d | 855 | |
d62a17ae | 856 | stream_free(bgp_dump_obuf); |
857 | bgp_dump_obuf = NULL; | |
376d7c50 | 858 | hook_unregister(bgp_packet_dump, bgp_dump_packet); |
7d8d0eab | 859 | hook_unregister(peer_status_changed, bgp_dump_state); |
228da428 | 860 | } |