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