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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); |
cc9f21da | 91 | static void 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); | |
c84e5187 DL |
120 | #pragma GCC diagnostic push |
121 | #pragma GCC diagnostic ignored "-Wformat-nonliteral" | |
122 | /* user supplied date/time format string */ | |
a2700b50 | 123 | ret = strftime(realpath, MAXPATHLEN, fullpath, &tm); |
d62a17ae | 124 | } else |
a2700b50 | 125 | ret = strftime(realpath, MAXPATHLEN, bgp_dump->filename, &tm); |
c84e5187 | 126 | #pragma GCC diagnostic pop |
d62a17ae | 127 | |
128 | if (ret == 0) { | |
a10c2872 | 129 | flog_warn(EC_BGP_DUMP, "%s: strftime error", __func__); |
d62a17ae | 130 | return NULL; |
131 | } | |
718e3744 | 132 | |
d62a17ae | 133 | if (bgp_dump->fp) |
134 | fclose(bgp_dump->fp); | |
718e3744 | 135 | |
136 | ||
d62a17ae | 137 | oldumask = umask(0777 & ~LOGFILE_MASK); |
138 | bgp_dump->fp = fopen(realpath, "w"); | |
718e3744 | 139 | |
d62a17ae | 140 | if (bgp_dump->fp == NULL) { |
a10c2872 | 141 | flog_warn(EC_BGP_DUMP, "%s: %s: %s", __func__, realpath, |
d62a17ae | 142 | strerror(errno)); |
143 | umask(oldumask); | |
144 | return NULL; | |
145 | } | |
146 | umask(oldumask); | |
718e3744 | 147 | |
d62a17ae | 148 | return bgp_dump->fp; |
718e3744 | 149 | } |
150 | ||
d62a17ae | 151 | static int bgp_dump_interval_add(struct bgp_dump *bgp_dump, int interval) |
718e3744 | 152 | { |
d62a17ae | 153 | int secs_into_day; |
154 | time_t t; | |
a2700b50 | 155 | struct tm tm; |
d62a17ae | 156 | |
157 | if (interval > 0) { | |
158 | /* Periodic dump every interval seconds */ | |
159 | if ((interval < 86400) && ((86400 % interval) == 0)) { | |
160 | /* Dump at predictable times: if a day has a whole | |
161 | * number of | |
162 | * intervals, dump every interval seconds starting from | |
163 | * midnight | |
164 | */ | |
165 | (void)time(&t); | |
a2700b50 MS |
166 | localtime_r(&t, &tm); |
167 | secs_into_day = tm.tm_sec + 60 * tm.tm_min | |
168 | + 60 * 60 * tm.tm_hour; | |
d62a17ae | 169 | interval = interval |
170 | - secs_into_day % interval; /* always > 0 */ | |
171 | } | |
d62a17ae | 172 | thread_add_timer(bm->master, bgp_dump_interval_func, bgp_dump, |
173 | interval, &bgp_dump->t_interval); | |
174 | } else { | |
175 | /* One-off dump: execute immediately, don't affect any scheduled | |
176 | * dumps */ | |
d62a17ae | 177 | thread_add_event(bm->master, bgp_dump_interval_func, bgp_dump, |
178 | 0, &bgp_dump->t_interval); | |
9834cd0f | 179 | } |
fba3d22b | 180 | |
d62a17ae | 181 | return 0; |
718e3744 | 182 | } |
183 | ||
184 | /* Dump common header. */ | |
d62a17ae | 185 | static void bgp_dump_header(struct stream *obuf, int type, int subtype, |
186 | int dump_type) | |
718e3744 | 187 | { |
d62a17ae | 188 | struct timeval clock; |
189 | long msecs; | |
190 | time_t secs; | |
4db5d90a | 191 | |
d62a17ae | 192 | if ((dump_type == BGP_DUMP_ALL_ET || dump_type == BGP_DUMP_UPDATES_ET) |
193 | && type == MSG_PROTOCOL_BGP4MP) | |
194 | type = MSG_PROTOCOL_BGP4MP_ET; | |
4db5d90a | 195 | |
d62a17ae | 196 | gettimeofday(&clock, NULL); |
718e3744 | 197 | |
d62a17ae | 198 | secs = clock.tv_sec; |
199 | msecs = clock.tv_usec; | |
718e3744 | 200 | |
d62a17ae | 201 | /* Put dump packet header. */ |
202 | stream_putl(obuf, secs); | |
203 | stream_putw(obuf, type); | |
204 | stream_putw(obuf, subtype); | |
205 | stream_putl(obuf, 0); /* len */ | |
4db5d90a | 206 | |
d62a17ae | 207 | /* Adding microseconds for the MRT Extended Header */ |
208 | if (type == MSG_PROTOCOL_BGP4MP_ET) | |
209 | stream_putl(obuf, msecs); | |
718e3744 | 210 | } |
211 | ||
d62a17ae | 212 | static void bgp_dump_set_size(struct stream *s, int type) |
718e3744 | 213 | { |
d62a17ae | 214 | /* |
215 | * The BGP_DUMP_HEADER_SIZE stay at 12 event when ET: | |
216 | * "The Microsecond Timestamp is included in the computation | |
217 | * of the Length field value." (RFC6396 2011) | |
218 | */ | |
219 | stream_putl_at(s, 8, stream_get_endp(s) - BGP_DUMP_HEADER_SIZE); | |
718e3744 | 220 | } |
221 | ||
d62a17ae | 222 | static void bgp_dump_routes_index_table(struct bgp *bgp) |
718e3744 | 223 | { |
d62a17ae | 224 | struct peer *peer; |
225 | struct listnode *node; | |
226 | uint16_t peerno = 1; | |
227 | struct stream *obuf; | |
228 | ||
229 | obuf = bgp_dump_obuf; | |
230 | stream_reset(obuf); | |
231 | ||
232 | /* MRT header */ | |
233 | bgp_dump_header(obuf, MSG_TABLE_DUMP_V2, TABLE_DUMP_V2_PEER_INDEX_TABLE, | |
234 | BGP_DUMP_ROUTES); | |
235 | ||
236 | /* Collector BGP ID */ | |
237 | stream_put_in_addr(obuf, &bgp->router_id); | |
238 | ||
239 | /* View name */ | |
8c1a4c10 DS |
240 | if (bgp->name_pretty) { |
241 | stream_putw(obuf, strlen(bgp->name_pretty)); | |
242 | stream_put(obuf, bgp->name_pretty, strlen(bgp->name_pretty)); | |
d62a17ae | 243 | } else { |
244 | stream_putw(obuf, 0); | |
245 | } | |
718e3744 | 246 | |
d62a17ae | 247 | /* Peer count ( plus one extra internal peer ) */ |
248 | stream_putw(obuf, listcount(bgp->peer) + 1); | |
249 | ||
250 | /* Populate fake peer at index 0, for locally originated routes */ | |
251 | /* Peer type (IPv4) */ | |
9d303b37 DL |
252 | stream_putc(obuf, |
253 | TABLE_DUMP_V2_PEER_INDEX_TABLE_AS4 | |
254 | + TABLE_DUMP_V2_PEER_INDEX_TABLE_IP); | |
d62a17ae | 255 | /* Peer BGP ID (0.0.0.0) */ |
256 | stream_putl(obuf, 0); | |
257 | /* Peer IP address (0.0.0.0) */ | |
258 | stream_putl(obuf, 0); | |
259 | /* Peer ASN (0) */ | |
260 | stream_putl(obuf, 0); | |
261 | ||
262 | /* Walk down all peers */ | |
263 | for (ALL_LIST_ELEMENTS_RO(bgp->peer, node, peer)) { | |
264 | ||
265 | /* Peer's type */ | |
266 | if (sockunion_family(&peer->su) == AF_INET) { | |
267 | stream_putc( | |
268 | obuf, | |
269 | TABLE_DUMP_V2_PEER_INDEX_TABLE_AS4 | |
270 | + TABLE_DUMP_V2_PEER_INDEX_TABLE_IP); | |
271 | } else if (sockunion_family(&peer->su) == AF_INET6) { | |
272 | stream_putc( | |
273 | obuf, | |
274 | TABLE_DUMP_V2_PEER_INDEX_TABLE_AS4 | |
275 | + TABLE_DUMP_V2_PEER_INDEX_TABLE_IP6); | |
276 | } | |
277 | ||
278 | /* Peer's BGP ID */ | |
279 | stream_put_in_addr(obuf, &peer->remote_id); | |
280 | ||
281 | /* Peer's IP address */ | |
282 | if (sockunion_family(&peer->su) == AF_INET) { | |
283 | stream_put_in_addr(obuf, &peer->su.sin.sin_addr); | |
284 | } else if (sockunion_family(&peer->su) == AF_INET6) { | |
d7c0a89a | 285 | stream_write(obuf, (uint8_t *)&peer->su.sin6.sin6_addr, |
d62a17ae | 286 | IPV6_MAX_BYTELEN); |
287 | } | |
288 | ||
289 | /* Peer's AS number. */ | |
290 | /* Note that, as this is an AS4 compliant quagga, the RIB is | |
291 | * always AS4 */ | |
292 | stream_putl(obuf, peer->as); | |
293 | ||
294 | /* Store the peer number for this peer */ | |
295 | peer->table_dump_index = peerno; | |
296 | peerno++; | |
297 | } | |
718e3744 | 298 | |
d62a17ae | 299 | bgp_dump_set_size(obuf, MSG_TABLE_DUMP_V2); |
718e3744 | 300 | |
d62a17ae | 301 | fwrite(STREAM_DATA(obuf), stream_get_endp(obuf), 1, bgp_dump_routes.fp); |
302 | fflush(bgp_dump_routes.fp); | |
718e3744 | 303 | } |
304 | ||
4b7e6066 | 305 | static struct bgp_path_info * |
9bcb3eef | 306 | bgp_dump_route_node_record(int afi, struct bgp_dest *dest, |
40381db7 | 307 | struct bgp_path_info *path, unsigned int seq) |
246556b5 | 308 | { |
d62a17ae | 309 | struct stream *obuf; |
310 | size_t sizep; | |
311 | size_t endp; | |
be92fc9f | 312 | bool addpath_capable; |
9bcb3eef | 313 | const struct prefix *p = bgp_dest_get_prefix(dest); |
d62a17ae | 314 | |
315 | obuf = bgp_dump_obuf; | |
316 | stream_reset(obuf); | |
317 | ||
be92fc9f | 318 | addpath_capable = bgp_addpath_encode_rx(path->peer, afi, SAFI_UNICAST); |
1073f44d | 319 | |
d62a17ae | 320 | /* MRT header */ |
be92fc9f | 321 | if (afi == AFI_IP && addpath_capable) |
1073f44d DT |
322 | bgp_dump_header(obuf, MSG_TABLE_DUMP_V2, |
323 | TABLE_DUMP_V2_RIB_IPV4_UNICAST_ADDPATH, | |
324 | BGP_DUMP_ROUTES); | |
325 | else if (afi == AFI_IP) | |
d62a17ae | 326 | bgp_dump_header(obuf, MSG_TABLE_DUMP_V2, |
327 | TABLE_DUMP_V2_RIB_IPV4_UNICAST, | |
328 | BGP_DUMP_ROUTES); | |
be92fc9f | 329 | else if (afi == AFI_IP6 && addpath_capable) |
1073f44d DT |
330 | bgp_dump_header(obuf, MSG_TABLE_DUMP_V2, |
331 | TABLE_DUMP_V2_RIB_IPV6_UNICAST_ADDPATH, | |
332 | BGP_DUMP_ROUTES); | |
d62a17ae | 333 | else if (afi == AFI_IP6) |
334 | bgp_dump_header(obuf, MSG_TABLE_DUMP_V2, | |
335 | TABLE_DUMP_V2_RIB_IPV6_UNICAST, | |
336 | BGP_DUMP_ROUTES); | |
337 | ||
338 | /* Sequence number */ | |
339 | stream_putl(obuf, seq); | |
340 | ||
341 | /* Prefix length */ | |
b54892e0 | 342 | stream_putc(obuf, p->prefixlen); |
d62a17ae | 343 | |
344 | /* Prefix */ | |
345 | if (afi == AFI_IP) { | |
346 | /* We'll dump only the useful bits (those not 0), but have to | |
347 | * align on 8 bits */ | |
b54892e0 DS |
348 | stream_write(obuf, (uint8_t *)&p->u.prefix4, |
349 | (p->prefixlen + 7) / 8); | |
d62a17ae | 350 | } else if (afi == AFI_IP6) { |
351 | /* We'll dump only the useful bits (those not 0), but have to | |
352 | * align on 8 bits */ | |
b54892e0 DS |
353 | stream_write(obuf, (uint8_t *)&p->u.prefix6, |
354 | (p->prefixlen + 7) / 8); | |
d62a17ae | 355 | } |
246556b5 | 356 | |
d62a17ae | 357 | /* Save where we are now, so we can overwride the entry count later */ |
358 | sizep = stream_get_endp(obuf); | |
246556b5 | 359 | |
d62a17ae | 360 | /* Entry count */ |
361 | uint16_t entry_count = 0; | |
246556b5 | 362 | |
d62a17ae | 363 | /* Entry count, note that this is overwritten later */ |
364 | stream_putw(obuf, 0); | |
246556b5 | 365 | |
d62a17ae | 366 | endp = stream_get_endp(obuf); |
40381db7 | 367 | for (; path; path = path->next) { |
d62a17ae | 368 | size_t cur_endp; |
246556b5 | 369 | |
d62a17ae | 370 | /* Peer index */ |
40381db7 | 371 | stream_putw(obuf, path->peer->table_dump_index); |
246556b5 | 372 | |
d62a17ae | 373 | /* Originated */ |
083ec940 | 374 | stream_putl(obuf, time(NULL) - (monotime(NULL) - path->uptime)); |
246556b5 | 375 | |
1073f44d | 376 | /*Path Identifier*/ |
be92fc9f | 377 | if (addpath_capable) { |
1073f44d DT |
378 | stream_putl(obuf, path->addpath_rx_id); |
379 | } | |
380 | ||
d62a17ae | 381 | /* Dump attribute. */ |
382 | /* Skip prefix & AFI/SAFI for MP_NLRI */ | |
97a52c82 | 383 | bgp_dump_routes_attr(obuf, path, p); |
246556b5 | 384 | |
d62a17ae | 385 | cur_endp = stream_get_endp(obuf); |
556beacf QY |
386 | if (cur_endp > BGP_STANDARD_MESSAGE_MAX_PACKET_SIZE |
387 | + BGP_DUMP_MSG_HEADER | |
d62a17ae | 388 | + BGP_DUMP_HEADER_SIZE) { |
389 | stream_set_endp(obuf, endp); | |
390 | break; | |
391 | } | |
246556b5 | 392 | |
d62a17ae | 393 | entry_count++; |
394 | endp = cur_endp; | |
395 | } | |
246556b5 | 396 | |
d62a17ae | 397 | /* Overwrite the entry count, now that we know the right number */ |
398 | stream_putw_at(obuf, sizep, entry_count); | |
246556b5 | 399 | |
d62a17ae | 400 | bgp_dump_set_size(obuf, MSG_TABLE_DUMP_V2); |
401 | fwrite(STREAM_DATA(obuf), stream_get_endp(obuf), 1, bgp_dump_routes.fp); | |
246556b5 | 402 | |
40381db7 | 403 | return path; |
246556b5 EU |
404 | } |
405 | ||
406 | ||
718e3744 | 407 | /* Runs under child process. */ |
d62a17ae | 408 | static unsigned int bgp_dump_routes_func(int afi, int first_run, |
409 | unsigned int seq) | |
718e3744 | 410 | { |
40381db7 | 411 | struct bgp_path_info *path; |
9bcb3eef | 412 | struct bgp_dest *dest; |
d62a17ae | 413 | struct bgp *bgp; |
414 | struct bgp_table *table; | |
415 | ||
416 | bgp = bgp_get_default(); | |
417 | if (!bgp) | |
418 | return seq; | |
419 | ||
420 | if (bgp_dump_routes.fp == NULL) | |
421 | return seq; | |
422 | ||
423 | /* Note that bgp_dump_routes_index_table will do ipv4 and ipv6 peers, | |
424 | so this should only be done on the first call to | |
425 | bgp_dump_routes_func. | |
426 | ( this function will be called once for ipv4 and once for ipv6 ) */ | |
427 | if (first_run) | |
428 | bgp_dump_routes_index_table(bgp); | |
429 | ||
430 | /* Walk down each BGP route. */ | |
431 | table = bgp->rib[afi][SAFI_UNICAST]; | |
432 | ||
9bcb3eef DS |
433 | for (dest = bgp_table_top(table); dest; dest = bgp_route_next(dest)) { |
434 | path = bgp_dest_get_bgp_path_info(dest); | |
40381db7 | 435 | while (path) { |
9bcb3eef | 436 | path = bgp_dump_route_node_record(afi, dest, path, seq); |
d62a17ae | 437 | seq++; |
438 | } | |
439 | } | |
0b2aa3a0 | 440 | |
d62a17ae | 441 | fflush(bgp_dump_routes.fp); |
0b2aa3a0 | 442 | |
d62a17ae | 443 | return seq; |
718e3744 | 444 | } |
445 | ||
cc9f21da | 446 | static void bgp_dump_interval_func(struct thread *t) |
718e3744 | 447 | { |
d62a17ae | 448 | struct bgp_dump *bgp_dump; |
449 | bgp_dump = THREAD_ARG(t); | |
d62a17ae | 450 | |
451 | /* Reschedule dump even if file couldn't be opened this time... */ | |
452 | if (bgp_dump_open_file(bgp_dump) != NULL) { | |
453 | /* In case of bgp_dump_routes, we need special route dump | |
454 | * function. */ | |
455 | if (bgp_dump->type == BGP_DUMP_ROUTES) { | |
456 | unsigned int seq = bgp_dump_routes_func(AFI_IP, 1, 0); | |
457 | bgp_dump_routes_func(AFI_IP6, 0, seq); | |
458 | /* Close the file now. For a RIB dump there's no point | |
459 | * in leaving | |
460 | * it open until the next scheduled dump starts. */ | |
461 | fclose(bgp_dump->fp); | |
462 | bgp_dump->fp = NULL; | |
463 | } | |
9834cd0f | 464 | } |
718e3744 | 465 | |
d62a17ae | 466 | /* if interval is set reschedule */ |
467 | if (bgp_dump->interval > 0) | |
468 | bgp_dump_interval_add(bgp_dump, bgp_dump->interval); | |
718e3744 | 469 | } |
470 | ||
471 | /* Dump common information. */ | |
d62a17ae | 472 | static void bgp_dump_common(struct stream *obuf, struct peer *peer, |
473 | int forceas4) | |
718e3744 | 474 | { |
d62a17ae | 475 | char empty[16] = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}; |
476 | ||
477 | /* Source AS number and Destination AS number. */ | |
478 | if (forceas4 || CHECK_FLAG(peer->cap, PEER_CAP_AS4_RCV)) { | |
479 | stream_putl(obuf, peer->as); | |
480 | stream_putl(obuf, peer->local_as); | |
481 | } else { | |
482 | stream_putw(obuf, peer->as); | |
483 | stream_putw(obuf, peer->local_as); | |
484 | } | |
718e3744 | 485 | |
d62a17ae | 486 | if (peer->su.sa.sa_family == AF_INET) { |
194a4f2c | 487 | stream_putw(obuf, peer->ifp ? peer->ifp->ifindex : 0); |
d62a17ae | 488 | stream_putw(obuf, AFI_IP); |
489 | ||
490 | stream_put(obuf, &peer->su.sin.sin_addr, IPV4_MAX_BYTELEN); | |
491 | ||
492 | if (peer->su_local) | |
493 | stream_put(obuf, &peer->su_local->sin.sin_addr, | |
494 | IPV4_MAX_BYTELEN); | |
495 | else | |
496 | stream_put(obuf, empty, IPV4_MAX_BYTELEN); | |
497 | } else if (peer->su.sa.sa_family == AF_INET6) { | |
498 | /* Interface Index and Address family. */ | |
194a4f2c | 499 | stream_putw(obuf, peer->ifp ? peer->ifp->ifindex : 0); |
d62a17ae | 500 | stream_putw(obuf, AFI_IP6); |
501 | ||
502 | /* Source IP Address and Destination IP Address. */ | |
503 | stream_put(obuf, &peer->su.sin6.sin6_addr, IPV6_MAX_BYTELEN); | |
504 | ||
505 | if (peer->su_local) | |
506 | stream_put(obuf, &peer->su_local->sin6.sin6_addr, | |
507 | IPV6_MAX_BYTELEN); | |
508 | else | |
509 | stream_put(obuf, empty, IPV6_MAX_BYTELEN); | |
510 | } | |
718e3744 | 511 | } |
512 | ||
513 | /* Dump BGP status change. */ | |
7d8d0eab | 514 | int bgp_dump_state(struct peer *peer) |
718e3744 | 515 | { |
d62a17ae | 516 | struct stream *obuf; |
718e3744 | 517 | |
d62a17ae | 518 | /* If dump file pointer is disabled return immediately. */ |
519 | if (bgp_dump_all.fp == NULL) | |
7d8d0eab | 520 | return 0; |
718e3744 | 521 | |
d62a17ae | 522 | /* Make dump stream. */ |
523 | obuf = bgp_dump_obuf; | |
524 | stream_reset(obuf); | |
718e3744 | 525 | |
d62a17ae | 526 | bgp_dump_header(obuf, MSG_PROTOCOL_BGP4MP, BGP4MP_STATE_CHANGE_AS4, |
527 | bgp_dump_all.type); | |
528 | bgp_dump_common(obuf, peer, 1); /* force this in as4speak*/ | |
718e3744 | 529 | |
7d8d0eab MKS |
530 | stream_putw(obuf, peer->ostatus); |
531 | stream_putw(obuf, peer->status); | |
718e3744 | 532 | |
d62a17ae | 533 | /* Set length. */ |
534 | bgp_dump_set_size(obuf, MSG_PROTOCOL_BGP4MP); | |
718e3744 | 535 | |
d62a17ae | 536 | /* Write to the stream. */ |
537 | fwrite(STREAM_DATA(obuf), stream_get_endp(obuf), 1, bgp_dump_all.fp); | |
538 | fflush(bgp_dump_all.fp); | |
7d8d0eab | 539 | return 0; |
718e3744 | 540 | } |
541 | ||
d62a17ae | 542 | static void bgp_dump_packet_func(struct bgp_dump *bgp_dump, struct peer *peer, |
543 | struct stream *packet) | |
718e3744 | 544 | { |
d62a17ae | 545 | struct stream *obuf; |
be92fc9f | 546 | bool addpath_capable = false; |
d62a17ae | 547 | /* If dump file pointer is disabled return immediately. */ |
548 | if (bgp_dump->fp == NULL) | |
549 | return; | |
1073f44d | 550 | if (peer->su.sa.sa_family == AF_INET) { |
be92fc9f | 551 | addpath_capable = |
1073f44d DT |
552 | bgp_addpath_encode_rx(peer, AFI_IP, SAFI_UNICAST); |
553 | } else if (peer->su.sa.sa_family == AF_INET6) { | |
be92fc9f | 554 | addpath_capable = |
1073f44d DT |
555 | bgp_addpath_encode_rx(peer, AFI_IP6, SAFI_UNICAST); |
556 | } | |
d62a17ae | 557 | |
558 | /* Make dump stream. */ | |
559 | obuf = bgp_dump_obuf; | |
560 | stream_reset(obuf); | |
561 | ||
562 | /* Dump header and common part. */ | |
be92fc9f | 563 | if (CHECK_FLAG(peer->cap, PEER_CAP_AS4_RCV) && addpath_capable) { |
1073f44d DT |
564 | bgp_dump_header(obuf, MSG_PROTOCOL_BGP4MP, |
565 | BGP4MP_MESSAGE_AS4_ADDPATH, bgp_dump->type); | |
566 | } else if (CHECK_FLAG(peer->cap, PEER_CAP_AS4_RCV)) { | |
d62a17ae | 567 | bgp_dump_header(obuf, MSG_PROTOCOL_BGP4MP, BGP4MP_MESSAGE_AS4, |
568 | bgp_dump->type); | |
be92fc9f | 569 | } else if (addpath_capable) { |
1073f44d DT |
570 | bgp_dump_header(obuf, MSG_PROTOCOL_BGP4MP, |
571 | BGP4MP_MESSAGE_ADDPATH, bgp_dump->type); | |
d62a17ae | 572 | } else { |
573 | bgp_dump_header(obuf, MSG_PROTOCOL_BGP4MP, BGP4MP_MESSAGE, | |
574 | bgp_dump->type); | |
575 | } | |
576 | bgp_dump_common(obuf, peer, 0); | |
718e3744 | 577 | |
d62a17ae | 578 | /* Packet contents. */ |
579 | stream_put(obuf, STREAM_DATA(packet), stream_get_endp(packet)); | |
718e3744 | 580 | |
d62a17ae | 581 | /* Set length. */ |
582 | bgp_dump_set_size(obuf, MSG_PROTOCOL_BGP4MP); | |
718e3744 | 583 | |
d62a17ae | 584 | /* Write to the stream. */ |
585 | fwrite(STREAM_DATA(obuf), stream_get_endp(obuf), 1, bgp_dump->fp); | |
586 | fflush(bgp_dump->fp); | |
718e3744 | 587 | } |
588 | ||
589 | /* Called from bgp_packet.c when BGP packet is received. */ | |
584470fb DL |
590 | static int bgp_dump_packet(struct peer *peer, uint8_t type, bgp_size_t size, |
591 | struct stream *packet) | |
718e3744 | 592 | { |
d62a17ae | 593 | /* bgp_dump_all. */ |
594 | bgp_dump_packet_func(&bgp_dump_all, peer, packet); | |
718e3744 | 595 | |
d62a17ae | 596 | /* bgp_dump_updates. */ |
597 | if (type == BGP_MSG_UPDATE) | |
598 | bgp_dump_packet_func(&bgp_dump_updates, peer, packet); | |
584470fb | 599 | return 0; |
718e3744 | 600 | } |
6b0655a2 | 601 | |
d62a17ae | 602 | static unsigned int bgp_dump_parse_time(const char *str) |
718e3744 | 603 | { |
d62a17ae | 604 | int i; |
605 | int len; | |
606 | int seen_h; | |
607 | int seen_m; | |
608 | int time; | |
609 | unsigned int total; | |
610 | ||
611 | time = 0; | |
612 | total = 0; | |
613 | seen_h = 0; | |
614 | seen_m = 0; | |
615 | len = strlen(str); | |
616 | ||
617 | for (i = 0; i < len; i++) { | |
fefa5e0f | 618 | if (isdigit((unsigned char)str[i])) { |
d62a17ae | 619 | time *= 10; |
620 | time += str[i] - '0'; | |
621 | } else if (str[i] == 'H' || str[i] == 'h') { | |
622 | if (seen_h) | |
623 | return 0; | |
624 | if (seen_m) | |
625 | return 0; | |
626 | total += time * 60 * 60; | |
627 | time = 0; | |
628 | seen_h = 1; | |
629 | } else if (str[i] == 'M' || str[i] == 'm') { | |
630 | if (seen_m) | |
631 | return 0; | |
632 | total += time * 60; | |
633 | time = 0; | |
634 | seen_m = 1; | |
635 | } else | |
636 | return 0; | |
718e3744 | 637 | } |
d62a17ae | 638 | return total + time; |
718e3744 | 639 | } |
640 | ||
d62a17ae | 641 | static int bgp_dump_set(struct vty *vty, struct bgp_dump *bgp_dump, |
642 | enum bgp_dump_type type, const char *path, | |
643 | const char *interval_str) | |
718e3744 | 644 | { |
d62a17ae | 645 | unsigned int interval; |
646 | ||
647 | /* Don't schedule duplicate dumps if the dump command is given twice */ | |
648 | if (bgp_dump->filename && strcmp(path, bgp_dump->filename) == 0 | |
649 | && type == bgp_dump->type) { | |
650 | if (interval_str) { | |
651 | if (bgp_dump->interval_str | |
652 | && strcmp(bgp_dump->interval_str, interval_str) | |
653 | == 0) | |
654 | return CMD_SUCCESS; | |
655 | } else { | |
656 | if (!bgp_dump->interval_str) | |
657 | return CMD_SUCCESS; | |
658 | } | |
718e3744 | 659 | } |
45ad592e | 660 | |
d62a17ae | 661 | /* Removing previous config */ |
662 | bgp_dump_unset(bgp_dump); | |
663 | ||
664 | if (interval_str) { | |
665 | /* Check interval string. */ | |
666 | interval = bgp_dump_parse_time(interval_str); | |
667 | if (interval == 0) { | |
668 | vty_out(vty, "Malformed interval string\n"); | |
669 | return CMD_WARNING_CONFIG_FAILED; | |
670 | } | |
671 | ||
672 | /* Setting interval string */ | |
673 | bgp_dump->interval_str = | |
674 | XSTRDUP(MTYPE_BGP_DUMP_STR, interval_str); | |
675 | } else { | |
676 | interval = 0; | |
677 | } | |
718e3744 | 678 | |
d62a17ae | 679 | /* Set type. */ |
680 | bgp_dump->type = type; | |
718e3744 | 681 | |
d62a17ae | 682 | /* Set interval */ |
683 | bgp_dump->interval = interval; | |
4db5d90a | 684 | |
d62a17ae | 685 | /* Set file name. */ |
686 | bgp_dump->filename = XSTRDUP(MTYPE_BGP_DUMP_STR, path); | |
4db5d90a | 687 | |
d62a17ae | 688 | /* Create interval thread. */ |
689 | bgp_dump_interval_add(bgp_dump, interval); | |
718e3744 | 690 | |
d62a17ae | 691 | /* This should be called when interval is expired. */ |
692 | bgp_dump_open_file(bgp_dump); | |
718e3744 | 693 | |
d62a17ae | 694 | return CMD_SUCCESS; |
718e3744 | 695 | } |
696 | ||
d62a17ae | 697 | static int bgp_dump_unset(struct bgp_dump *bgp_dump) |
718e3744 | 698 | { |
d62a17ae | 699 | /* Removing file name. */ |
e1b36e13 | 700 | XFREE(MTYPE_BGP_DUMP_STR, bgp_dump->filename); |
718e3744 | 701 | |
d62a17ae | 702 | /* Closing file. */ |
703 | if (bgp_dump->fp) { | |
704 | fclose(bgp_dump->fp); | |
705 | bgp_dump->fp = NULL; | |
706 | } | |
718e3744 | 707 | |
b3d6bc6e | 708 | /* Removing interval event. */ |
c3aaa89a | 709 | THREAD_OFF(bgp_dump->t_interval); |
718e3744 | 710 | |
d62a17ae | 711 | bgp_dump->interval = 0; |
718e3744 | 712 | |
d62a17ae | 713 | /* Removing interval string. */ |
e1b36e13 | 714 | XFREE(MTYPE_BGP_DUMP_STR, bgp_dump->interval_str); |
d62a17ae | 715 | |
716 | return CMD_SUCCESS; | |
718e3744 | 717 | } |
718 | ||
719 | DEFUN (dump_bgp_all, | |
720 | dump_bgp_all_cmd, | |
6147e2c6 | 721 | "dump bgp <all|all-et|updates|updates-et|routes-mrt> PATH [INTERVAL]", |
718e3744 | 722 | "Dump packet\n" |
723 | "BGP packet dump\n" | |
cbac2b1b EU |
724 | "Dump all BGP packets\nDump all BGP packets (Extended Timestamp Header)\n" |
725 | "Dump BGP updates only\nDump BGP updates only (Extended Timestamp Header)\n" | |
4db5d90a | 726 | "Dump whole BGP routing table\n" |
718e3744 | 727 | "Output filename\n" |
728 | "Interval of output\n") | |
729 | { | |
d62a17ae | 730 | int idx_dump_routes = 2; |
731 | int idx_path = 3; | |
732 | int idx_interval = 4; | |
733 | int bgp_dump_type = 0; | |
734 | const char *interval = NULL; | |
735 | struct bgp_dump *bgp_dump_struct = NULL; | |
736 | const struct bgp_dump_type_map *map = NULL; | |
737 | ||
738 | for (map = bgp_dump_type_map; map->str; map++) | |
739 | if (strmatch(argv[idx_dump_routes]->text, map->str)) | |
740 | bgp_dump_type = map->type; | |
741 | ||
742 | switch (bgp_dump_type) { | |
743 | case BGP_DUMP_ALL: | |
744 | case BGP_DUMP_ALL_ET: | |
745 | bgp_dump_struct = &bgp_dump_all; | |
746 | break; | |
747 | case BGP_DUMP_UPDATES: | |
748 | case BGP_DUMP_UPDATES_ET: | |
749 | bgp_dump_struct = &bgp_dump_updates; | |
750 | break; | |
751 | case BGP_DUMP_ROUTES: | |
752 | default: | |
753 | bgp_dump_struct = &bgp_dump_routes; | |
754 | break; | |
755 | } | |
718e3744 | 756 | |
d62a17ae | 757 | /* When an interval is given */ |
758 | if (argc == idx_interval + 1) | |
759 | interval = argv[idx_interval]->arg; | |
718e3744 | 760 | |
d62a17ae | 761 | return bgp_dump_set(vty, bgp_dump_struct, bgp_dump_type, |
762 | argv[idx_path]->arg, interval); | |
718e3744 | 763 | } |
764 | ||
4db5d90a AF |
765 | DEFUN (no_dump_bgp_all, |
766 | no_dump_bgp_all_cmd, | |
37bc45eb | 767 | "no dump bgp <all|all-et|updates|updates-et|routes-mrt> [PATH [INTERVAL]]", |
718e3744 | 768 | NO_STR |
4db5d90a AF |
769 | "Stop dump packet\n" |
770 | "Stop BGP packet dump\n" | |
ca492402 DS |
771 | "Stop dump process all\n" |
772 | "Stop dump process all-et\n" | |
773 | "Stop dump process updates\n" | |
774 | "Stop dump process updates-et\n" | |
3a2d747c QY |
775 | "Stop dump process route-mrt\n" |
776 | "Output filename\n" | |
777 | "Interval of output\n") | |
718e3744 | 778 | { |
d62a17ae | 779 | int idx_dump_routes = 3; |
780 | int bgp_dump_type = 0; | |
781 | const struct bgp_dump_type_map *map = NULL; | |
782 | struct bgp_dump *bgp_dump_struct = NULL; | |
783 | ||
784 | for (map = bgp_dump_type_map; map->str; map++) | |
785 | if (strmatch(argv[idx_dump_routes]->text, map->str)) | |
786 | bgp_dump_type = map->type; | |
787 | ||
788 | switch (bgp_dump_type) { | |
789 | case BGP_DUMP_ALL: | |
790 | case BGP_DUMP_ALL_ET: | |
791 | bgp_dump_struct = &bgp_dump_all; | |
792 | break; | |
793 | case BGP_DUMP_UPDATES: | |
794 | case BGP_DUMP_UPDATES_ET: | |
795 | bgp_dump_struct = &bgp_dump_updates; | |
796 | break; | |
797 | case BGP_DUMP_ROUTES: | |
798 | default: | |
799 | bgp_dump_struct = &bgp_dump_routes; | |
800 | break; | |
801 | } | |
ca492402 | 802 | |
d62a17ae | 803 | return bgp_dump_unset(bgp_dump_struct); |
718e3744 | 804 | } |
805 | ||
612c2c15 | 806 | static int config_write_bgp_dump(struct vty *vty); |
718e3744 | 807 | /* BGP node structure. */ |
62b346ee | 808 | static struct cmd_node bgp_dump_node = { |
f4b8291f | 809 | .name = "dump", |
62b346ee DL |
810 | .node = DUMP_NODE, |
811 | .prompt = "", | |
612c2c15 | 812 | .config_write = config_write_bgp_dump, |
62b346ee | 813 | }; |
718e3744 | 814 | |
d62a17ae | 815 | static int config_write_bgp_dump(struct vty *vty) |
718e3744 | 816 | { |
d62a17ae | 817 | if (bgp_dump_all.filename) { |
818 | const char *type_str = "all"; | |
819 | if (bgp_dump_all.type == BGP_DUMP_ALL_ET) | |
820 | type_str = "all-et"; | |
821 | ||
822 | if (bgp_dump_all.interval_str) | |
823 | vty_out(vty, "dump bgp %s %s %s\n", type_str, | |
824 | bgp_dump_all.filename, | |
825 | bgp_dump_all.interval_str); | |
826 | else | |
827 | vty_out(vty, "dump bgp %s %s\n", type_str, | |
828 | bgp_dump_all.filename); | |
829 | } | |
830 | if (bgp_dump_updates.filename) { | |
831 | const char *type_str = "updates"; | |
832 | if (bgp_dump_updates.type == BGP_DUMP_UPDATES_ET) | |
833 | type_str = "updates-et"; | |
834 | ||
835 | if (bgp_dump_updates.interval_str) | |
836 | vty_out(vty, "dump bgp %s %s %s\n", type_str, | |
837 | bgp_dump_updates.filename, | |
838 | bgp_dump_updates.interval_str); | |
839 | else | |
840 | vty_out(vty, "dump bgp %s %s\n", type_str, | |
841 | bgp_dump_updates.filename); | |
842 | } | |
843 | if (bgp_dump_routes.filename) { | |
844 | if (bgp_dump_routes.interval_str) | |
845 | vty_out(vty, "dump bgp routes-mrt %s %s\n", | |
846 | bgp_dump_routes.filename, | |
847 | bgp_dump_routes.interval_str); | |
848 | else | |
849 | vty_out(vty, "dump bgp routes-mrt %s\n", | |
850 | bgp_dump_routes.filename); | |
851 | } | |
852 | return 0; | |
718e3744 | 853 | } |
6b0655a2 | 854 | |
718e3744 | 855 | /* Initialize BGP packet dump functionality. */ |
d62a17ae | 856 | void bgp_dump_init(void) |
718e3744 | 857 | { |
6006b807 DA |
858 | memset(&bgp_dump_all, 0, sizeof(bgp_dump_all)); |
859 | memset(&bgp_dump_updates, 0, sizeof(bgp_dump_updates)); | |
860 | memset(&bgp_dump_routes, 0, sizeof(bgp_dump_routes)); | |
718e3744 | 861 | |
d62a17ae | 862 | bgp_dump_obuf = |
556beacf QY |
863 | stream_new((BGP_STANDARD_MESSAGE_MAX_PACKET_SIZE * 2) |
864 | + BGP_DUMP_MSG_HEADER + BGP_DUMP_HEADER_SIZE); | |
718e3744 | 865 | |
612c2c15 | 866 | install_node(&bgp_dump_node); |
718e3744 | 867 | |
d62a17ae | 868 | install_element(CONFIG_NODE, &dump_bgp_all_cmd); |
869 | install_element(CONFIG_NODE, &no_dump_bgp_all_cmd); | |
584470fb DL |
870 | |
871 | hook_register(bgp_packet_dump, bgp_dump_packet); | |
7d8d0eab | 872 | hook_register(peer_status_changed, bgp_dump_state); |
718e3744 | 873 | } |
228da428 | 874 | |
d62a17ae | 875 | void bgp_dump_finish(void) |
228da428 | 876 | { |
d62a17ae | 877 | bgp_dump_unset(&bgp_dump_all); |
878 | bgp_dump_unset(&bgp_dump_updates); | |
879 | bgp_dump_unset(&bgp_dump_routes); | |
b8438f6d | 880 | |
d62a17ae | 881 | stream_free(bgp_dump_obuf); |
882 | bgp_dump_obuf = NULL; | |
376d7c50 | 883 | hook_unregister(bgp_packet_dump, bgp_dump_packet); |
7d8d0eab | 884 | hook_unregister(peer_status_changed, bgp_dump_state); |
228da428 | 885 | } |