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Commit | Line | Data |
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718e3744 | 1 | /* BGP community-list and extcommunity-list. |
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 "command.h" | |
24 | #include "prefix.h" | |
25 | #include "memory.h" | |
3f9c7369 | 26 | #include "queue.h" |
039f3a34 | 27 | #include "filter.h" |
937652c6 | 28 | #include "stream.h" |
3571a6a2 | 29 | #include "jhash.h" |
5bd66e2d | 30 | #include "frrstr.h" |
718e3744 | 31 | |
32 | #include "bgpd/bgpd.h" | |
33 | #include "bgpd/bgp_community.h" | |
34 | #include "bgpd/bgp_ecommunity.h" | |
57d187bc | 35 | #include "bgpd/bgp_lcommunity.h" |
f4dd8296 | 36 | #include "bgpd/bgp_community_alias.h" |
718e3744 | 37 | #include "bgpd/bgp_aspath.h" |
38 | #include "bgpd/bgp_regex.h" | |
39 | #include "bgpd/bgp_clist.h" | |
6b0655a2 | 40 | |
2f8cc0e5 DA |
41 | /* Calculate new sequential number. */ |
42 | static int64_t bgp_clist_new_seq_get(struct community_list *list) | |
43 | { | |
44 | int64_t maxseq; | |
45 | int64_t newseq; | |
46 | struct community_entry *entry; | |
47 | ||
1bb379bf | 48 | maxseq = 0; |
2f8cc0e5 DA |
49 | |
50 | for (entry = list->head; entry; entry = entry->next) { | |
51 | if (maxseq < entry->seq) | |
52 | maxseq = entry->seq; | |
53 | } | |
54 | ||
55 | newseq = ((maxseq / 5) * 5) + 5; | |
56 | ||
57 | return (newseq > UINT_MAX) ? UINT_MAX : newseq; | |
58 | } | |
59 | ||
60 | /* Return community-list entry which has same seq number. */ | |
61 | static struct community_entry *bgp_clist_seq_check(struct community_list *list, | |
62 | int64_t seq) | |
63 | { | |
64 | struct community_entry *entry; | |
65 | ||
66 | for (entry = list->head; entry; entry = entry->next) | |
67 | if (entry->seq == seq) | |
68 | return entry; | |
69 | return NULL; | |
70 | } | |
71 | ||
d8b87afe | 72 | static uint32_t bgp_clist_hash_key_community_list(const void *data) |
3571a6a2 | 73 | { |
d8b87afe | 74 | struct community_list *cl = (struct community_list *) data; |
3571a6a2 | 75 | |
e237b0d2 DS |
76 | if (cl->name_hash) |
77 | return cl->name_hash; | |
78 | ||
79 | cl->name_hash = bgp_clist_hash_key(cl->name); | |
80 | return cl->name_hash; | |
3571a6a2 DS |
81 | } |
82 | ||
83 | static bool bgp_clist_hash_cmp_community_list(const void *a1, const void *a2) | |
84 | { | |
85 | const struct community_list *cl1 = a1; | |
86 | const struct community_list *cl2 = a2; | |
87 | ||
e237b0d2 DS |
88 | if (cl1->name_hash != cl2->name_hash) |
89 | return false; | |
90 | ||
3571a6a2 DS |
91 | if (strcmp(cl1->name, cl2->name) == 0) |
92 | return true; | |
93 | ||
94 | return false; | |
95 | } | |
96 | ||
718e3744 | 97 | /* Lookup master structure for community-list or |
98 | extcommunity-list. */ | |
99 | struct community_list_master * | |
d62a17ae | 100 | community_list_master_lookup(struct community_list_handler *ch, int master) |
718e3744 | 101 | { |
d62a17ae | 102 | if (ch) |
103 | switch (master) { | |
104 | case COMMUNITY_LIST_MASTER: | |
105 | return &ch->community_list; | |
106 | case EXTCOMMUNITY_LIST_MASTER: | |
107 | return &ch->extcommunity_list; | |
108 | case LARGE_COMMUNITY_LIST_MASTER: | |
109 | return &ch->lcommunity_list; | |
110 | } | |
111 | return NULL; | |
718e3744 | 112 | } |
113 | ||
114 | /* Allocate a new community list entry. */ | |
d62a17ae | 115 | static struct community_entry *community_entry_new(void) |
718e3744 | 116 | { |
d62a17ae | 117 | return XCALLOC(MTYPE_COMMUNITY_LIST_ENTRY, |
118 | sizeof(struct community_entry)); | |
718e3744 | 119 | } |
120 | ||
121 | /* Free community list entry. */ | |
d62a17ae | 122 | static void community_entry_free(struct community_entry *entry) |
718e3744 | 123 | { |
d62a17ae | 124 | switch (entry->style) { |
125 | case COMMUNITY_LIST_STANDARD: | |
126 | if (entry->u.com) | |
3c1f53de | 127 | community_free(&entry->u.com); |
d62a17ae | 128 | break; |
129 | case LARGE_COMMUNITY_LIST_STANDARD: | |
130 | if (entry->u.lcom) | |
131 | lcommunity_free(&entry->u.lcom); | |
132 | break; | |
133 | case EXTCOMMUNITY_LIST_STANDARD: | |
134 | /* In case of standard extcommunity-list, configuration string | |
135 | is made by ecommunity_ecom2str(). */ | |
0a22ddfb | 136 | XFREE(MTYPE_ECOMMUNITY_STR, entry->config); |
d62a17ae | 137 | if (entry->u.ecom) |
138 | ecommunity_free(&entry->u.ecom); | |
139 | break; | |
140 | case COMMUNITY_LIST_EXPANDED: | |
141 | case EXTCOMMUNITY_LIST_EXPANDED: | |
142 | case LARGE_COMMUNITY_LIST_EXPANDED: | |
0a22ddfb | 143 | XFREE(MTYPE_COMMUNITY_LIST_CONFIG, entry->config); |
d62a17ae | 144 | if (entry->reg) |
145 | bgp_regex_free(entry->reg); | |
146 | default: | |
147 | break; | |
148 | } | |
149 | XFREE(MTYPE_COMMUNITY_LIST_ENTRY, entry); | |
718e3744 | 150 | } |
151 | ||
152 | /* Allocate a new community-list. */ | |
d62a17ae | 153 | static struct community_list *community_list_new(void) |
718e3744 | 154 | { |
d62a17ae | 155 | return XCALLOC(MTYPE_COMMUNITY_LIST, sizeof(struct community_list)); |
718e3744 | 156 | } |
157 | ||
158 | /* Free community-list. */ | |
d62a17ae | 159 | static void community_list_free(struct community_list *list) |
718e3744 | 160 | { |
0a22ddfb | 161 | XFREE(MTYPE_COMMUNITY_LIST_NAME, list->name); |
d62a17ae | 162 | XFREE(MTYPE_COMMUNITY_LIST, list); |
718e3744 | 163 | } |
164 | ||
94f2b392 | 165 | static struct community_list * |
d62a17ae | 166 | community_list_insert(struct community_list_handler *ch, const char *name, |
167 | int master) | |
718e3744 | 168 | { |
d62a17ae | 169 | size_t i; |
170 | long number; | |
171 | struct community_list *new; | |
172 | struct community_list *point; | |
173 | struct community_list_list *list; | |
174 | struct community_list_master *cm; | |
175 | ||
176 | /* Lookup community-list master. */ | |
177 | cm = community_list_master_lookup(ch, master); | |
178 | if (!cm) | |
179 | return NULL; | |
180 | ||
181 | /* Allocate new community_list and copy given name. */ | |
182 | new = community_list_new(); | |
183 | new->name = XSTRDUP(MTYPE_COMMUNITY_LIST_NAME, name); | |
e237b0d2 | 184 | new->name_hash = bgp_clist_hash_key_community_list(new); |
d62a17ae | 185 | |
3571a6a2 DS |
186 | /* Save for later */ |
187 | hash_get(cm->hash, new, hash_alloc_intern); | |
188 | ||
d62a17ae | 189 | /* If name is made by all digit character. We treat it as |
190 | number. */ | |
191 | for (number = 0, i = 0; i < strlen(name); i++) { | |
fefa5e0f | 192 | if (isdigit((unsigned char)name[i])) |
d62a17ae | 193 | number = (number * 10) + (name[i] - '0'); |
194 | else | |
195 | break; | |
196 | } | |
718e3744 | 197 | |
d62a17ae | 198 | /* In case of name is all digit character */ |
199 | if (i == strlen(name)) { | |
200 | new->sort = COMMUNITY_LIST_NUMBER; | |
718e3744 | 201 | |
d62a17ae | 202 | /* Set access_list to number list. */ |
203 | list = &cm->num; | |
718e3744 | 204 | |
d62a17ae | 205 | for (point = list->head; point; point = point->next) |
206 | if (atol(point->name) >= number) | |
207 | break; | |
208 | } else { | |
209 | new->sort = COMMUNITY_LIST_STRING; | |
718e3744 | 210 | |
d62a17ae | 211 | /* Set access_list to string list. */ |
212 | list = &cm->str; | |
718e3744 | 213 | |
d62a17ae | 214 | /* Set point to insertion point. */ |
215 | for (point = list->head; point; point = point->next) | |
216 | if (strcmp(point->name, name) >= 0) | |
217 | break; | |
218 | } | |
718e3744 | 219 | |
d62a17ae | 220 | /* Link to upper list. */ |
221 | new->parent = list; | |
718e3744 | 222 | |
d62a17ae | 223 | /* In case of this is the first element of master. */ |
224 | if (list->head == NULL) { | |
225 | list->head = list->tail = new; | |
226 | return new; | |
227 | } | |
718e3744 | 228 | |
d62a17ae | 229 | /* In case of insertion is made at the tail of access_list. */ |
230 | if (point == NULL) { | |
231 | new->prev = list->tail; | |
232 | list->tail->next = new; | |
233 | list->tail = new; | |
234 | return new; | |
235 | } | |
718e3744 | 236 | |
d62a17ae | 237 | /* In case of insertion is made at the head of access_list. */ |
238 | if (point == list->head) { | |
239 | new->next = list->head; | |
240 | list->head->prev = new; | |
241 | list->head = new; | |
242 | return new; | |
243 | } | |
718e3744 | 244 | |
d62a17ae | 245 | /* Insertion is made at middle of the access_list. */ |
246 | new->next = point; | |
247 | new->prev = point->prev; | |
718e3744 | 248 | |
d62a17ae | 249 | if (point->prev) |
250 | point->prev->next = new; | |
251 | point->prev = new; | |
718e3744 | 252 | |
d62a17ae | 253 | return new; |
718e3744 | 254 | } |
255 | ||
d62a17ae | 256 | struct community_list *community_list_lookup(struct community_list_handler *ch, |
e237b0d2 DS |
257 | const char *name, |
258 | uint32_t name_hash, | |
259 | int master) | |
718e3744 | 260 | { |
3571a6a2 | 261 | struct community_list lookup; |
d62a17ae | 262 | struct community_list_master *cm; |
718e3744 | 263 | |
d62a17ae | 264 | if (!name) |
265 | return NULL; | |
718e3744 | 266 | |
d62a17ae | 267 | cm = community_list_master_lookup(ch, master); |
268 | if (!cm) | |
269 | return NULL; | |
718e3744 | 270 | |
3571a6a2 | 271 | lookup.name = (char *)name; |
e237b0d2 | 272 | lookup.name_hash = name_hash; |
3571a6a2 | 273 | return hash_get(cm->hash, &lookup, NULL); |
718e3744 | 274 | } |
275 | ||
94f2b392 | 276 | static struct community_list * |
d62a17ae | 277 | community_list_get(struct community_list_handler *ch, const char *name, |
278 | int master) | |
718e3744 | 279 | { |
d62a17ae | 280 | struct community_list *list; |
718e3744 | 281 | |
e237b0d2 | 282 | list = community_list_lookup(ch, name, 0, master); |
d62a17ae | 283 | if (!list) |
284 | list = community_list_insert(ch, name, master); | |
285 | return list; | |
718e3744 | 286 | } |
287 | ||
3571a6a2 DS |
288 | static void community_list_delete(struct community_list_master *cm, |
289 | struct community_list *list) | |
718e3744 | 290 | { |
d62a17ae | 291 | struct community_list_list *clist; |
292 | struct community_entry *entry, *next; | |
718e3744 | 293 | |
d62a17ae | 294 | for (entry = list->head; entry; entry = next) { |
295 | next = entry->next; | |
296 | community_entry_free(entry); | |
297 | } | |
718e3744 | 298 | |
d62a17ae | 299 | clist = list->parent; |
718e3744 | 300 | |
d62a17ae | 301 | if (list->next) |
302 | list->next->prev = list->prev; | |
303 | else | |
304 | clist->tail = list->prev; | |
718e3744 | 305 | |
d62a17ae | 306 | if (list->prev) |
307 | list->prev->next = list->next; | |
308 | else | |
309 | clist->head = list->next; | |
718e3744 | 310 | |
3571a6a2 | 311 | hash_release(cm->hash, list); |
d62a17ae | 312 | community_list_free(list); |
718e3744 | 313 | } |
314 | ||
88f1c947 | 315 | static bool community_list_empty_p(struct community_list *list) |
718e3744 | 316 | { |
88f1c947 | 317 | return list->head == NULL && list->tail == NULL; |
718e3744 | 318 | } |
6b0655a2 | 319 | |
718e3744 | 320 | /* Delete community-list entry from the list. */ |
3571a6a2 DS |
321 | static void community_list_entry_delete(struct community_list_master *cm, |
322 | struct community_list *list, | |
3f54c705 | 323 | struct community_entry *entry) |
718e3744 | 324 | { |
d62a17ae | 325 | if (entry->next) |
326 | entry->next->prev = entry->prev; | |
327 | else | |
328 | list->tail = entry->prev; | |
718e3744 | 329 | |
d62a17ae | 330 | if (entry->prev) |
331 | entry->prev->next = entry->next; | |
332 | else | |
333 | list->head = entry->next; | |
718e3744 | 334 | |
d62a17ae | 335 | community_entry_free(entry); |
718e3744 | 336 | |
d62a17ae | 337 | if (community_list_empty_p(list)) |
3571a6a2 | 338 | community_list_delete(cm, list); |
718e3744 | 339 | } |
340 | ||
96e2fd25 DS |
341 | /* |
342 | * Replace community-list entry in the list. Note that entry is the new one | |
343 | * and replace is one one being replaced. | |
344 | */ | |
345 | static void community_list_entry_replace(struct community_list *list, | |
346 | struct community_entry *replace, | |
347 | struct community_entry *entry) | |
348 | { | |
349 | if (replace->next) { | |
350 | entry->next = replace->next; | |
351 | replace->next->prev = entry; | |
352 | } else { | |
353 | entry->next = NULL; | |
354 | list->tail = entry; | |
355 | } | |
356 | ||
357 | if (replace->prev) { | |
358 | entry->prev = replace->prev; | |
359 | replace->prev->next = entry; | |
360 | } else { | |
361 | entry->prev = NULL; | |
362 | list->head = entry; | |
363 | } | |
364 | ||
365 | community_entry_free(replace); | |
366 | } | |
367 | ||
2f8cc0e5 DA |
368 | /* Add community-list entry to the list. */ |
369 | static void community_list_entry_add(struct community_list *list, | |
370 | struct community_entry *entry, | |
371 | struct community_list_handler *ch, | |
372 | int master) | |
373 | { | |
2f8cc0e5 DA |
374 | struct community_entry *replace; |
375 | struct community_entry *point; | |
376 | ||
2f8cc0e5 DA |
377 | /* Automatic assignment of seq no. */ |
378 | if (entry->seq == COMMUNITY_SEQ_NUMBER_AUTO) | |
379 | entry->seq = bgp_clist_new_seq_get(list); | |
380 | ||
381 | if (list->tail && entry->seq > list->tail->seq) | |
382 | point = NULL; | |
383 | else { | |
384 | replace = bgp_clist_seq_check(list, entry->seq); | |
96e2fd25 DS |
385 | if (replace) { |
386 | community_list_entry_replace(list, replace, entry); | |
387 | return; | |
388 | } | |
2f8cc0e5 DA |
389 | |
390 | /* Check insert point. */ | |
391 | for (point = list->head; point; point = point->next) | |
392 | if (point->seq >= entry->seq) | |
393 | break; | |
394 | } | |
395 | ||
396 | /* In case of this is the first element of the list. */ | |
397 | entry->next = point; | |
398 | ||
399 | if (point) { | |
400 | if (point->prev) | |
401 | point->prev->next = entry; | |
402 | else | |
403 | list->head = entry; | |
404 | ||
405 | entry->prev = point->prev; | |
406 | point->prev = entry; | |
407 | } else { | |
408 | if (list->tail) | |
409 | list->tail->next = entry; | |
410 | else | |
411 | list->head = entry; | |
412 | ||
413 | entry->prev = list->tail; | |
414 | list->tail = entry; | |
415 | } | |
416 | } | |
417 | ||
718e3744 | 418 | /* Lookup community-list entry from the list. */ |
419 | static struct community_entry * | |
d62a17ae | 420 | community_list_entry_lookup(struct community_list *list, const void *arg, |
421 | int direct) | |
718e3744 | 422 | { |
d62a17ae | 423 | struct community_entry *entry; |
424 | ||
425 | for (entry = list->head; entry; entry = entry->next) { | |
426 | switch (entry->style) { | |
427 | case COMMUNITY_LIST_STANDARD: | |
428 | if (entry->direct == direct | |
429 | && community_cmp(entry->u.com, arg)) | |
430 | return entry; | |
431 | break; | |
432 | case EXTCOMMUNITY_LIST_STANDARD: | |
433 | if (entry->direct == direct | |
434 | && ecommunity_cmp(entry->u.ecom, arg)) | |
435 | return entry; | |
436 | break; | |
437 | case LARGE_COMMUNITY_LIST_STANDARD: | |
438 | if (entry->direct == direct | |
439 | && lcommunity_cmp(entry->u.lcom, arg)) | |
440 | return entry; | |
441 | break; | |
442 | case COMMUNITY_LIST_EXPANDED: | |
443 | case EXTCOMMUNITY_LIST_EXPANDED: | |
444 | case LARGE_COMMUNITY_LIST_EXPANDED: | |
445 | if (entry->direct == direct | |
446 | && strcmp(entry->config, arg) == 0) | |
447 | return entry; | |
448 | break; | |
449 | default: | |
450 | break; | |
451 | } | |
452 | } | |
453 | return NULL; | |
718e3744 | 454 | } |
6b0655a2 | 455 | |
d62a17ae | 456 | static char *community_str_get(struct community *com, int i) |
5cbea288 | 457 | { |
d7c0a89a QY |
458 | uint32_t comval; |
459 | uint16_t as; | |
460 | uint16_t val; | |
d62a17ae | 461 | char *str; |
d62a17ae | 462 | |
d7c0a89a | 463 | memcpy(&comval, com_nthval(com, i), sizeof(uint32_t)); |
d62a17ae | 464 | comval = ntohl(comval); |
465 | ||
466 | switch (comval) { | |
467 | case COMMUNITY_INTERNET: | |
aeab4a80 | 468 | str = XSTRDUP(MTYPE_COMMUNITY_STR, "internet"); |
d62a17ae | 469 | break; |
aa861c10 | 470 | case COMMUNITY_GSHUT: |
aeab4a80 | 471 | str = XSTRDUP(MTYPE_COMMUNITY_STR, "graceful-shutdown"); |
aa861c10 C |
472 | break; |
473 | case COMMUNITY_ACCEPT_OWN: | |
aeab4a80 | 474 | str = XSTRDUP(MTYPE_COMMUNITY_STR, "accept-own"); |
aa861c10 C |
475 | break; |
476 | case COMMUNITY_ROUTE_FILTER_TRANSLATED_v4: | |
aeab4a80 QY |
477 | str = XSTRDUP(MTYPE_COMMUNITY_STR, |
478 | "route-filter-translated-v4"); | |
aa861c10 C |
479 | break; |
480 | case COMMUNITY_ROUTE_FILTER_v4: | |
aeab4a80 | 481 | str = XSTRDUP(MTYPE_COMMUNITY_STR, "route-filter-v4"); |
aa861c10 C |
482 | break; |
483 | case COMMUNITY_ROUTE_FILTER_TRANSLATED_v6: | |
aeab4a80 QY |
484 | str = XSTRDUP(MTYPE_COMMUNITY_STR, |
485 | "route-filter-translated-v6"); | |
aa861c10 C |
486 | break; |
487 | case COMMUNITY_ROUTE_FILTER_v6: | |
aeab4a80 | 488 | str = XSTRDUP(MTYPE_COMMUNITY_STR, "route-filter-v6"); |
aa861c10 C |
489 | break; |
490 | case COMMUNITY_LLGR_STALE: | |
aeab4a80 | 491 | str = XSTRDUP(MTYPE_COMMUNITY_STR, "llgr-stale"); |
aa861c10 C |
492 | break; |
493 | case COMMUNITY_NO_LLGR: | |
aeab4a80 | 494 | str = XSTRDUP(MTYPE_COMMUNITY_STR, "no-llgr"); |
aa861c10 C |
495 | break; |
496 | case COMMUNITY_ACCEPT_OWN_NEXTHOP: | |
aeab4a80 | 497 | str = XSTRDUP(MTYPE_COMMUNITY_STR, "accept-own-nexthop"); |
aa861c10 C |
498 | break; |
499 | case COMMUNITY_BLACKHOLE: | |
aeab4a80 | 500 | str = XSTRDUP(MTYPE_COMMUNITY_STR, "blackhole"); |
aa861c10 | 501 | break; |
d62a17ae | 502 | case COMMUNITY_NO_EXPORT: |
aeab4a80 | 503 | str = XSTRDUP(MTYPE_COMMUNITY_STR, "no-export"); |
d62a17ae | 504 | break; |
505 | case COMMUNITY_NO_ADVERTISE: | |
aeab4a80 | 506 | str = XSTRDUP(MTYPE_COMMUNITY_STR, "no-advertise"); |
d62a17ae | 507 | break; |
508 | case COMMUNITY_LOCAL_AS: | |
aeab4a80 | 509 | str = XSTRDUP(MTYPE_COMMUNITY_STR, "local-AS"); |
d62a17ae | 510 | break; |
aa861c10 | 511 | case COMMUNITY_NO_PEER: |
aeab4a80 | 512 | str = XSTRDUP(MTYPE_COMMUNITY_STR, "no-peer"); |
7f323236 | 513 | break; |
809d6365 | 514 | default: |
aeab4a80 | 515 | str = XSTRDUP(MTYPE_COMMUNITY_STR, "65536:65535"); |
d62a17ae | 516 | as = (comval >> 16) & 0xFFFF; |
517 | val = comval & 0xFFFF; | |
aeab4a80 | 518 | snprintf(str, strlen(str), "%u:%d", as, val); |
d62a17ae | 519 | break; |
520 | } | |
5cbea288 | 521 | |
d62a17ae | 522 | return str; |
5cbea288 DS |
523 | } |
524 | ||
525 | /* Internal function to perform regular expression match for | |
2acb4ac2 | 526 | * a single community. */ |
88f1c947 | 527 | static bool community_regexp_include(regex_t *reg, struct community *com, int i) |
5cbea288 | 528 | { |
d62a17ae | 529 | char *str; |
530 | int rv; | |
5cbea288 | 531 | |
d62a17ae | 532 | /* When there is no communities attribute it is treated as empty string. |
533 | */ | |
534 | if (com == NULL || com->size == 0) | |
535 | str = XSTRDUP(MTYPE_COMMUNITY_STR, ""); | |
536 | else | |
537 | str = community_str_get(com, i); | |
5cbea288 | 538 | |
d62a17ae | 539 | /* Regular expression match. */ |
540 | rv = regexec(reg, str, 0, NULL, 0); | |
b84ee83b | 541 | |
d62a17ae | 542 | XFREE(MTYPE_COMMUNITY_STR, str); |
b84ee83b | 543 | |
88f1c947 | 544 | return rv == 0; |
5cbea288 DS |
545 | } |
546 | ||
718e3744 | 547 | /* Internal function to perform regular expression match for community |
548 | attribute. */ | |
88f1c947 | 549 | static bool community_regexp_match(struct community *com, regex_t *reg) |
718e3744 | 550 | { |
d62a17ae | 551 | const char *str; |
718e3744 | 552 | |
d62a17ae | 553 | /* When there is no communities attribute it is treated as empty |
554 | string. */ | |
555 | if (com == NULL || com->size == 0) | |
556 | str = ""; | |
557 | else | |
a69ea8ae | 558 | str = community_str(com, false); |
718e3744 | 559 | |
d62a17ae | 560 | /* Regular expression match. */ |
f4dd8296 | 561 | if (regexec(reg, bgp_alias2community_str(str), 0, NULL, 0) == 0) |
88f1c947 | 562 | return true; |
718e3744 | 563 | |
d62a17ae | 564 | /* No match. */ |
88f1c947 | 565 | return false; |
718e3744 | 566 | } |
567 | ||
d62a17ae | 568 | static char *lcommunity_str_get(struct lcommunity *lcom, int i) |
57d187bc | 569 | { |
d62a17ae | 570 | struct lcommunity_val lcomval; |
d7c0a89a QY |
571 | uint32_t globaladmin; |
572 | uint32_t localdata1; | |
573 | uint32_t localdata2; | |
d62a17ae | 574 | char *str; |
1be1693e | 575 | const uint8_t *ptr; |
d62a17ae | 576 | |
ff9104a2 | 577 | ptr = lcom->val + (i * LCOMMUNITY_SIZE); |
d62a17ae | 578 | |
579 | memcpy(&lcomval, ptr, LCOMMUNITY_SIZE); | |
580 | ||
581 | /* Allocate memory. 48 bytes taken off bgp_lcommunity.c */ | |
d7c0a89a | 582 | ptr = (uint8_t *)lcomval.val; |
937652c6 DL |
583 | ptr = ptr_get_be32(ptr, &globaladmin); |
584 | ptr = ptr_get_be32(ptr, &localdata1); | |
585 | ptr = ptr_get_be32(ptr, &localdata2); | |
586 | (void)ptr; /* consume value */ | |
d62a17ae | 587 | |
fc746f1c QY |
588 | str = XMALLOC(MTYPE_LCOMMUNITY_STR, 48); |
589 | snprintf(str, 48, "%u:%u:%u", globaladmin, localdata1, localdata2); | |
d62a17ae | 590 | |
591 | return str; | |
57d187bc JS |
592 | } |
593 | ||
594 | /* Internal function to perform regular expression match for | |
2acb4ac2 | 595 | * a single community. */ |
88f1c947 DA |
596 | static bool lcommunity_regexp_include(regex_t *reg, struct lcommunity *lcom, |
597 | int i) | |
57d187bc | 598 | { |
d62a17ae | 599 | char *str; |
600 | ||
601 | /* When there is no communities attribute it is treated as empty string. | |
602 | */ | |
603 | if (lcom == NULL || lcom->size == 0) | |
604 | str = XSTRDUP(MTYPE_LCOMMUNITY_STR, ""); | |
605 | else | |
606 | str = lcommunity_str_get(lcom, i); | |
607 | ||
608 | /* Regular expression match. */ | |
609 | if (regexec(reg, str, 0, NULL, 0) == 0) { | |
610 | XFREE(MTYPE_LCOMMUNITY_STR, str); | |
88f1c947 | 611 | return true; |
d62a17ae | 612 | } |
57d187bc | 613 | |
d62a17ae | 614 | XFREE(MTYPE_LCOMMUNITY_STR, str); |
615 | /* No match. */ | |
88f1c947 | 616 | return false; |
57d187bc JS |
617 | } |
618 | ||
88f1c947 | 619 | static bool lcommunity_regexp_match(struct lcommunity *com, regex_t *reg) |
57d187bc | 620 | { |
d62a17ae | 621 | const char *str; |
57d187bc | 622 | |
d62a17ae | 623 | /* When there is no communities attribute it is treated as empty |
624 | string. */ | |
625 | if (com == NULL || com->size == 0) | |
626 | str = ""; | |
627 | else | |
8d9b8ed9 | 628 | str = lcommunity_str(com, false); |
57d187bc | 629 | |
d62a17ae | 630 | /* Regular expression match. */ |
f4dd8296 | 631 | if (regexec(reg, bgp_alias2community_str(str), 0, NULL, 0) == 0) |
88f1c947 | 632 | return true; |
57d187bc | 633 | |
d62a17ae | 634 | /* No match. */ |
88f1c947 | 635 | return false; |
57d187bc JS |
636 | } |
637 | ||
638 | ||
88f1c947 | 639 | static bool ecommunity_regexp_match(struct ecommunity *ecom, regex_t *reg) |
8708b74f | 640 | { |
d62a17ae | 641 | const char *str; |
8708b74f | 642 | |
d62a17ae | 643 | /* When there is no communities attribute it is treated as empty |
644 | string. */ | |
645 | if (ecom == NULL || ecom->size == 0) | |
646 | str = ""; | |
647 | else | |
648 | str = ecommunity_str(ecom); | |
8708b74f | 649 | |
d62a17ae | 650 | /* Regular expression match. */ |
651 | if (regexec(reg, str, 0, NULL, 0) == 0) | |
88f1c947 | 652 | return true; |
8708b74f | 653 | |
d62a17ae | 654 | /* No match. */ |
88f1c947 | 655 | return false; |
8708b74f | 656 | } |
657 | ||
718e3744 | 658 | /* When given community attribute matches to the community-list return |
659 | 1 else return 0. */ | |
88f1c947 | 660 | bool community_list_match(struct community *com, struct community_list *list) |
718e3744 | 661 | { |
d62a17ae | 662 | struct community_entry *entry; |
663 | ||
664 | for (entry = list->head; entry; entry = entry->next) { | |
665 | if (entry->any) | |
88f1c947 | 666 | return entry->direct == COMMUNITY_PERMIT; |
d62a17ae | 667 | |
668 | if (entry->style == COMMUNITY_LIST_STANDARD) { | |
669 | if (community_include(entry->u.com, COMMUNITY_INTERNET)) | |
88f1c947 | 670 | return entry->direct == COMMUNITY_PERMIT; |
d62a17ae | 671 | |
672 | if (community_match(com, entry->u.com)) | |
88f1c947 | 673 | return entry->direct == COMMUNITY_PERMIT; |
d62a17ae | 674 | } else if (entry->style == COMMUNITY_LIST_EXPANDED) { |
675 | if (community_regexp_match(com, entry->reg)) | |
88f1c947 | 676 | return entry->direct == COMMUNITY_PERMIT; |
d62a17ae | 677 | } |
678 | } | |
88f1c947 | 679 | return false; |
8708b74f | 680 | } |
681 | ||
88f1c947 | 682 | bool lcommunity_list_match(struct lcommunity *lcom, struct community_list *list) |
57d187bc | 683 | { |
d62a17ae | 684 | struct community_entry *entry; |
685 | ||
686 | for (entry = list->head; entry; entry = entry->next) { | |
687 | if (entry->any) | |
88f1c947 | 688 | return entry->direct == COMMUNITY_PERMIT; |
d62a17ae | 689 | |
690 | if (entry->style == LARGE_COMMUNITY_LIST_STANDARD) { | |
691 | if (lcommunity_match(lcom, entry->u.lcom)) | |
88f1c947 | 692 | return entry->direct == COMMUNITY_PERMIT; |
d62a17ae | 693 | } else if (entry->style == LARGE_COMMUNITY_LIST_EXPANDED) { |
694 | if (lcommunity_regexp_match(lcom, entry->reg)) | |
88f1c947 | 695 | return entry->direct == COMMUNITY_PERMIT; |
d62a17ae | 696 | } |
697 | } | |
88f1c947 | 698 | return false; |
57d187bc JS |
699 | } |
700 | ||
f8463998 | 701 | |
702 | /* Perform exact matching. In case of expanded large-community-list, do | |
703 | * same thing as lcommunity_list_match(). | |
704 | */ | |
88f1c947 DA |
705 | bool lcommunity_list_exact_match(struct lcommunity *lcom, |
706 | struct community_list *list) | |
f8463998 | 707 | { |
708 | struct community_entry *entry; | |
709 | ||
710 | for (entry = list->head; entry; entry = entry->next) { | |
711 | if (entry->any) | |
88f1c947 | 712 | return entry->direct == COMMUNITY_PERMIT; |
f8463998 | 713 | |
714 | if (entry->style == LARGE_COMMUNITY_LIST_STANDARD) { | |
715 | if (lcommunity_cmp(lcom, entry->u.com)) | |
88f1c947 | 716 | return entry->direct == COMMUNITY_PERMIT; |
f8463998 | 717 | } else if (entry->style == LARGE_COMMUNITY_LIST_EXPANDED) { |
718 | if (lcommunity_regexp_match(lcom, entry->reg)) | |
88f1c947 | 719 | return entry->direct == COMMUNITY_PERMIT; |
f8463998 | 720 | } |
721 | } | |
88f1c947 | 722 | return false; |
f8463998 | 723 | } |
724 | ||
88f1c947 | 725 | bool ecommunity_list_match(struct ecommunity *ecom, struct community_list *list) |
8708b74f | 726 | { |
d62a17ae | 727 | struct community_entry *entry; |
728 | ||
729 | for (entry = list->head; entry; entry = entry->next) { | |
730 | if (entry->any) | |
88f1c947 | 731 | return entry->direct == COMMUNITY_PERMIT; |
d62a17ae | 732 | |
733 | if (entry->style == EXTCOMMUNITY_LIST_STANDARD) { | |
734 | if (ecommunity_match(ecom, entry->u.ecom)) | |
88f1c947 | 735 | return entry->direct == COMMUNITY_PERMIT; |
d62a17ae | 736 | } else if (entry->style == EXTCOMMUNITY_LIST_EXPANDED) { |
737 | if (ecommunity_regexp_match(ecom, entry->reg)) | |
88f1c947 | 738 | return entry->direct == COMMUNITY_PERMIT; |
d62a17ae | 739 | } |
740 | } | |
88f1c947 | 741 | return false; |
718e3744 | 742 | } |
743 | ||
744 | /* Perform exact matching. In case of expanded community-list, do | |
745 | same thing as community_list_match(). */ | |
88f1c947 DA |
746 | bool community_list_exact_match(struct community *com, |
747 | struct community_list *list) | |
718e3744 | 748 | { |
d62a17ae | 749 | struct community_entry *entry; |
750 | ||
751 | for (entry = list->head; entry; entry = entry->next) { | |
752 | if (entry->any) | |
88f1c947 | 753 | return entry->direct == COMMUNITY_PERMIT; |
d62a17ae | 754 | |
755 | if (entry->style == COMMUNITY_LIST_STANDARD) { | |
756 | if (community_include(entry->u.com, COMMUNITY_INTERNET)) | |
88f1c947 | 757 | return entry->direct == COMMUNITY_PERMIT; |
d62a17ae | 758 | |
759 | if (community_cmp(com, entry->u.com)) | |
88f1c947 | 760 | return entry->direct == COMMUNITY_PERMIT; |
d62a17ae | 761 | } else if (entry->style == COMMUNITY_LIST_EXPANDED) { |
762 | if (community_regexp_match(com, entry->reg)) | |
88f1c947 | 763 | return entry->direct == COMMUNITY_PERMIT; |
d62a17ae | 764 | } |
765 | } | |
88f1c947 | 766 | return false; |
718e3744 | 767 | } |
768 | ||
8708b74f | 769 | /* Delete all permitted communities in the list from com. */ |
d62a17ae | 770 | struct community *community_list_match_delete(struct community *com, |
771 | struct community_list *list) | |
718e3744 | 772 | { |
d62a17ae | 773 | struct community_entry *entry; |
d7c0a89a QY |
774 | uint32_t val; |
775 | uint32_t com_index_to_delete[com->size]; | |
d62a17ae | 776 | int delete_index = 0; |
777 | int i; | |
778 | ||
779 | /* Loop over each community value and evaluate each against the | |
780 | * community-list. If we need to delete a community value add its index | |
ceead39c | 781 | * to com_index_to_delete. |
d62a17ae | 782 | */ |
783 | for (i = 0; i < com->size; i++) { | |
784 | val = community_val_get(com, i); | |
785 | ||
786 | for (entry = list->head; entry; entry = entry->next) { | |
787 | if (entry->any) { | |
788 | if (entry->direct == COMMUNITY_PERMIT) { | |
789 | com_index_to_delete[delete_index] = i; | |
790 | delete_index++; | |
791 | } | |
792 | break; | |
793 | } | |
794 | ||
795 | else if ((entry->style == COMMUNITY_LIST_STANDARD) | |
796 | && (community_include(entry->u.com, | |
797 | COMMUNITY_INTERNET) | |
798 | || community_include(entry->u.com, val))) { | |
799 | if (entry->direct == COMMUNITY_PERMIT) { | |
800 | com_index_to_delete[delete_index] = i; | |
801 | delete_index++; | |
802 | } | |
803 | break; | |
804 | } | |
805 | ||
806 | else if ((entry->style == COMMUNITY_LIST_EXPANDED) | |
807 | && community_regexp_include(entry->reg, com, | |
808 | i)) { | |
809 | if (entry->direct == COMMUNITY_PERMIT) { | |
810 | com_index_to_delete[delete_index] = i; | |
811 | delete_index++; | |
812 | } | |
813 | break; | |
814 | } | |
815 | } | |
816 | } | |
5cbea288 | 817 | |
d62a17ae | 818 | /* Delete all of the communities we flagged for deletion */ |
819 | for (i = delete_index - 1; i >= 0; i--) { | |
820 | val = community_val_get(com, com_index_to_delete[i]); | |
0743b61d | 821 | val = htonl(val); |
d62a17ae | 822 | community_del_val(com, &val); |
823 | } | |
5cbea288 | 824 | |
d62a17ae | 825 | return com; |
718e3744 | 826 | } |
827 | ||
828 | /* To avoid duplicated entry in the community-list, this function | |
829 | compares specified entry to existing entry. */ | |
88f1c947 DA |
830 | static bool community_list_dup_check(struct community_list *list, |
831 | struct community_entry *new) | |
718e3744 | 832 | { |
d62a17ae | 833 | struct community_entry *entry; |
834 | ||
835 | for (entry = list->head; entry; entry = entry->next) { | |
836 | if (entry->style != new->style) | |
837 | continue; | |
838 | ||
839 | if (entry->direct != new->direct) | |
840 | continue; | |
841 | ||
842 | if (entry->any != new->any) | |
843 | continue; | |
844 | ||
845 | if (entry->any) | |
88f1c947 | 846 | return true; |
d62a17ae | 847 | |
848 | switch (entry->style) { | |
849 | case COMMUNITY_LIST_STANDARD: | |
850 | if (community_cmp(entry->u.com, new->u.com)) | |
88f1c947 | 851 | return true; |
d62a17ae | 852 | break; |
853 | case LARGE_COMMUNITY_LIST_STANDARD: | |
854 | if (lcommunity_cmp(entry->u.lcom, new->u.lcom)) | |
88f1c947 | 855 | return true; |
d62a17ae | 856 | break; |
857 | case EXTCOMMUNITY_LIST_STANDARD: | |
858 | if (ecommunity_cmp(entry->u.ecom, new->u.ecom)) | |
88f1c947 | 859 | return true; |
d62a17ae | 860 | break; |
861 | case COMMUNITY_LIST_EXPANDED: | |
862 | case EXTCOMMUNITY_LIST_EXPANDED: | |
863 | case LARGE_COMMUNITY_LIST_EXPANDED: | |
864 | if (strcmp(entry->config, new->config) == 0) | |
88f1c947 | 865 | return true; |
d62a17ae | 866 | break; |
867 | default: | |
868 | break; | |
869 | } | |
870 | } | |
88f1c947 | 871 | return false; |
718e3744 | 872 | } |
6b0655a2 | 873 | |
718e3744 | 874 | /* Set community-list. */ |
d62a17ae | 875 | int community_list_set(struct community_list_handler *ch, const char *name, |
2f8cc0e5 | 876 | const char *str, const char *seq, int direct, int style) |
718e3744 | 877 | { |
d62a17ae | 878 | struct community_entry *entry = NULL; |
879 | struct community_list *list; | |
880 | struct community *com = NULL; | |
881 | regex_t *regex = NULL; | |
2f8cc0e5 DA |
882 | int64_t seqnum = COMMUNITY_SEQ_NUMBER_AUTO; |
883 | ||
884 | if (seq) | |
885 | seqnum = (int64_t)atol(seq); | |
d62a17ae | 886 | |
887 | /* Get community list. */ | |
888 | list = community_list_get(ch, name, COMMUNITY_LIST_MASTER); | |
889 | ||
890 | /* When community-list already has entry, new entry should have same | |
891 | style. If you want to have mixed style community-list, you can | |
892 | comment out this check. */ | |
893 | if (!community_list_empty_p(list)) { | |
894 | struct community_entry *first; | |
895 | ||
896 | first = list->head; | |
897 | ||
898 | if (style != first->style) { | |
899 | return (first->style == COMMUNITY_LIST_STANDARD | |
900 | ? COMMUNITY_LIST_ERR_STANDARD_CONFLICT | |
901 | : COMMUNITY_LIST_ERR_EXPANDED_CONFLICT); | |
902 | } | |
fee6e4e4 | 903 | } |
718e3744 | 904 | |
d62a17ae | 905 | if (str) { |
906 | if (style == COMMUNITY_LIST_STANDARD) | |
907 | com = community_str2com(str); | |
908 | else | |
909 | regex = bgp_regcomp(str); | |
8708b74f | 910 | |
d62a17ae | 911 | if (!com && !regex) |
912 | return COMMUNITY_LIST_ERR_MALFORMED_VAL; | |
913 | } | |
718e3744 | 914 | |
d62a17ae | 915 | entry = community_entry_new(); |
916 | entry->direct = direct; | |
917 | entry->style = style; | |
d3f6c580 | 918 | entry->any = (str ? false : true); |
d62a17ae | 919 | entry->u.com = com; |
920 | entry->reg = regex; | |
2f8cc0e5 | 921 | entry->seq = seqnum; |
d62a17ae | 922 | entry->config = |
923 | (regex ? XSTRDUP(MTYPE_COMMUNITY_LIST_CONFIG, str) : NULL); | |
924 | ||
925 | /* Do not put duplicated community entry. */ | |
926 | if (community_list_dup_check(list, entry)) | |
927 | community_entry_free(entry); | |
928 | else { | |
2f8cc0e5 DA |
929 | community_list_entry_add(list, entry, ch, |
930 | COMMUNITY_LIST_MASTER); | |
d62a17ae | 931 | route_map_notify_dependencies(name, RMAP_EVENT_CLIST_ADDED); |
932 | } | |
718e3744 | 933 | |
d62a17ae | 934 | return 0; |
718e3744 | 935 | } |
936 | ||
813d4307 | 937 | /* Unset community-list */ |
d62a17ae | 938 | int community_list_unset(struct community_list_handler *ch, const char *name, |
2f8cc0e5 DA |
939 | const char *str, const char *seq, int direct, |
940 | int style) | |
718e3744 | 941 | { |
3571a6a2 | 942 | struct community_list_master *cm = NULL; |
d62a17ae | 943 | struct community_entry *entry = NULL; |
944 | struct community_list *list; | |
945 | struct community *com = NULL; | |
946 | ||
947 | /* Lookup community list. */ | |
e237b0d2 | 948 | list = community_list_lookup(ch, name, 0, COMMUNITY_LIST_MASTER); |
d62a17ae | 949 | if (list == NULL) |
950 | return COMMUNITY_LIST_ERR_CANT_FIND_LIST; | |
951 | ||
3571a6a2 | 952 | cm = community_list_master_lookup(ch, COMMUNITY_LIST_MASTER); |
d62a17ae | 953 | /* Delete all of entry belongs to this community-list. */ |
7298a8e1 | 954 | if (!str) { |
3571a6a2 | 955 | community_list_delete(cm, list); |
d62a17ae | 956 | route_map_notify_dependencies(name, RMAP_EVENT_CLIST_DELETED); |
957 | return 0; | |
958 | } | |
718e3744 | 959 | |
7298a8e1 QY |
960 | if (style == COMMUNITY_LIST_STANDARD) |
961 | com = community_str2com(str); | |
718e3744 | 962 | |
d62a17ae | 963 | if (com) { |
964 | entry = community_list_entry_lookup(list, com, direct); | |
3c1f53de | 965 | community_free(&com); |
d62a17ae | 966 | } else |
967 | entry = community_list_entry_lookup(list, str, direct); | |
fee6e4e4 | 968 | |
d62a17ae | 969 | if (!entry) |
970 | return COMMUNITY_LIST_ERR_CANT_FIND_LIST; | |
718e3744 | 971 | |
3571a6a2 | 972 | community_list_entry_delete(cm, list, entry); |
d62a17ae | 973 | route_map_notify_dependencies(name, RMAP_EVENT_CLIST_DELETED); |
718e3744 | 974 | |
d62a17ae | 975 | return 0; |
718e3744 | 976 | } |
977 | ||
57d187bc | 978 | /* Delete all permitted large communities in the list from com. */ |
d62a17ae | 979 | struct lcommunity *lcommunity_list_match_delete(struct lcommunity *lcom, |
980 | struct community_list *list) | |
57d187bc | 981 | { |
d62a17ae | 982 | struct community_entry *entry; |
d7c0a89a QY |
983 | uint32_t com_index_to_delete[lcom->size]; |
984 | uint8_t *ptr; | |
d62a17ae | 985 | int delete_index = 0; |
986 | int i; | |
987 | ||
988 | /* Loop over each lcommunity value and evaluate each against the | |
989 | * community-list. If we need to delete a community value add its index | |
ceead39c | 990 | * to com_index_to_delete. |
d62a17ae | 991 | */ |
d62a17ae | 992 | for (i = 0; i < lcom->size; i++) { |
534fc195 | 993 | ptr = lcom->val + (i * LCOMMUNITY_SIZE); |
d62a17ae | 994 | for (entry = list->head; entry; entry = entry->next) { |
995 | if (entry->any) { | |
996 | if (entry->direct == COMMUNITY_PERMIT) { | |
997 | com_index_to_delete[delete_index] = i; | |
998 | delete_index++; | |
999 | } | |
1000 | break; | |
1001 | } | |
1002 | ||
1003 | else if ((entry->style == LARGE_COMMUNITY_LIST_STANDARD) | |
1004 | && lcommunity_include(entry->u.lcom, ptr)) { | |
1005 | if (entry->direct == COMMUNITY_PERMIT) { | |
1006 | com_index_to_delete[delete_index] = i; | |
1007 | delete_index++; | |
1008 | } | |
1009 | break; | |
1010 | } | |
1011 | ||
cde8d696 | 1012 | else if ((entry->style == LARGE_COMMUNITY_LIST_EXPANDED) |
d62a17ae | 1013 | && lcommunity_regexp_include(entry->reg, lcom, |
1014 | i)) { | |
1015 | if (entry->direct == COMMUNITY_PERMIT) { | |
1016 | com_index_to_delete[delete_index] = i; | |
1017 | delete_index++; | |
1018 | } | |
1019 | break; | |
1020 | } | |
1021 | } | |
1022 | } | |
57d187bc | 1023 | |
d62a17ae | 1024 | /* Delete all of the communities we flagged for deletion */ |
d62a17ae | 1025 | for (i = delete_index - 1; i >= 0; i--) { |
0a7dce9b | 1026 | ptr = lcom->val + (com_index_to_delete[i] * LCOMMUNITY_SIZE); |
d62a17ae | 1027 | lcommunity_del_val(lcom, ptr); |
1028 | } | |
57d187bc | 1029 | |
d62a17ae | 1030 | return lcom; |
57d187bc JS |
1031 | } |
1032 | ||
5bd66e2d | 1033 | /* Helper to check if every octet do not exceed UINT_MAX */ |
c850908b | 1034 | bool lcommunity_list_valid(const char *community, int style) |
5bd66e2d | 1035 | { |
bc2c9ae6 DA |
1036 | int octets; |
1037 | char **splits, **communities; | |
c850908b | 1038 | char *endptr; |
bc2c9ae6 | 1039 | int num, num_communities; |
c850908b WC |
1040 | regex_t *regres; |
1041 | int invalid = 0; | |
5bd66e2d | 1042 | |
bc2c9ae6 | 1043 | frrstr_split(community, " ", &communities, &num_communities); |
5bd66e2d | 1044 | |
bc2c9ae6 DA |
1045 | for (int j = 0; j < num_communities; j++) { |
1046 | octets = 0; | |
1047 | frrstr_split(communities[j], ":", &splits, &num); | |
1048 | ||
1049 | for (int i = 0; i < num; i++) { | |
bc2c9ae6 | 1050 | if (strlen(splits[i]) == 0) |
c850908b WC |
1051 | /* There is no digit to check */ |
1052 | invalid++; | |
1053 | ||
1054 | if (style == LARGE_COMMUNITY_LIST_STANDARD) { | |
1055 | if (*splits[i] == '-') | |
1056 | /* Must not be negative */ | |
1057 | invalid++; | |
1058 | else if (strtoul(splits[i], &endptr, 10) | |
1059 | > UINT_MAX) | |
1060 | /* Larger than 4 octets */ | |
1061 | invalid++; | |
1062 | else if (*endptr) | |
1063 | /* Not all characters were digits */ | |
1064 | invalid++; | |
1065 | } else { | |
1066 | regres = bgp_regcomp(communities[j]); | |
1067 | if (!regres) | |
1068 | /* malformed regex */ | |
1069 | invalid++; | |
1070 | else | |
1071 | bgp_regex_free(regres); | |
1072 | } | |
bc2c9ae6 DA |
1073 | |
1074 | octets++; | |
1075 | XFREE(MTYPE_TMP, splits[i]); | |
1076 | } | |
1077 | XFREE(MTYPE_TMP, splits); | |
1078 | ||
c850908b WC |
1079 | if (octets != 3) |
1080 | invalid++; | |
5bd66e2d | 1081 | |
bc2c9ae6 | 1082 | XFREE(MTYPE_TMP, communities[j]); |
5bd66e2d | 1083 | } |
bc2c9ae6 | 1084 | XFREE(MTYPE_TMP, communities); |
5bd66e2d | 1085 | |
c850908b | 1086 | return (invalid > 0) ? false : true; |
5bd66e2d DA |
1087 | } |
1088 | ||
57d187bc | 1089 | /* Set lcommunity-list. */ |
d62a17ae | 1090 | int lcommunity_list_set(struct community_list_handler *ch, const char *name, |
2f8cc0e5 | 1091 | const char *str, const char *seq, int direct, int style) |
57d187bc | 1092 | { |
d62a17ae | 1093 | struct community_entry *entry = NULL; |
1094 | struct community_list *list; | |
1095 | struct lcommunity *lcom = NULL; | |
1096 | regex_t *regex = NULL; | |
2f8cc0e5 DA |
1097 | int64_t seqnum = COMMUNITY_SEQ_NUMBER_AUTO; |
1098 | ||
1099 | if (seq) | |
1100 | seqnum = (int64_t)atol(seq); | |
d62a17ae | 1101 | |
1102 | /* Get community list. */ | |
1103 | list = community_list_get(ch, name, LARGE_COMMUNITY_LIST_MASTER); | |
1104 | ||
1105 | /* When community-list already has entry, new entry should have same | |
1106 | style. If you want to have mixed style community-list, you can | |
1107 | comment out this check. */ | |
1108 | if (!community_list_empty_p(list)) { | |
1109 | struct community_entry *first; | |
1110 | ||
1111 | first = list->head; | |
1112 | ||
1113 | if (style != first->style) { | |
1114 | return (first->style == COMMUNITY_LIST_STANDARD | |
1115 | ? COMMUNITY_LIST_ERR_STANDARD_CONFLICT | |
1116 | : COMMUNITY_LIST_ERR_EXPANDED_CONFLICT); | |
1117 | } | |
1118 | } | |
57d187bc | 1119 | |
d62a17ae | 1120 | if (str) { |
1121 | if (style == LARGE_COMMUNITY_LIST_STANDARD) | |
1122 | lcom = lcommunity_str2com(str); | |
1123 | else | |
1124 | regex = bgp_regcomp(str); | |
57d187bc | 1125 | |
d62a17ae | 1126 | if (!lcom && !regex) |
1127 | return COMMUNITY_LIST_ERR_MALFORMED_VAL; | |
1128 | } | |
57d187bc | 1129 | |
d62a17ae | 1130 | entry = community_entry_new(); |
1131 | entry->direct = direct; | |
1132 | entry->style = style; | |
d3f6c580 | 1133 | entry->any = (str ? false : true); |
d62a17ae | 1134 | entry->u.lcom = lcom; |
1135 | entry->reg = regex; | |
2f8cc0e5 | 1136 | entry->seq = seqnum; |
8d9b8ed9 PM |
1137 | entry->config = |
1138 | (regex ? XSTRDUP(MTYPE_COMMUNITY_LIST_CONFIG, str) : NULL); | |
d62a17ae | 1139 | |
1140 | /* Do not put duplicated community entry. */ | |
1141 | if (community_list_dup_check(list, entry)) | |
1142 | community_entry_free(entry); | |
35f6f850 | 1143 | else { |
2f8cc0e5 DA |
1144 | community_list_entry_add(list, entry, ch, |
1145 | LARGE_COMMUNITY_LIST_MASTER); | |
35f6f850 | 1146 | route_map_notify_dependencies(name, RMAP_EVENT_LLIST_ADDED); |
1147 | } | |
d62a17ae | 1148 | |
1149 | return 0; | |
57d187bc JS |
1150 | } |
1151 | ||
1152 | /* Unset community-list. When str is NULL, delete all of | |
1153 | community-list entry belongs to the specified name. */ | |
d62a17ae | 1154 | int lcommunity_list_unset(struct community_list_handler *ch, const char *name, |
2f8cc0e5 DA |
1155 | const char *str, const char *seq, int direct, |
1156 | int style) | |
57d187bc | 1157 | { |
3571a6a2 | 1158 | struct community_list_master *cm = NULL; |
d62a17ae | 1159 | struct community_entry *entry = NULL; |
1160 | struct community_list *list; | |
1161 | struct lcommunity *lcom = NULL; | |
1162 | regex_t *regex = NULL; | |
1163 | ||
1164 | /* Lookup community list. */ | |
e237b0d2 | 1165 | list = community_list_lookup(ch, name, 0, LARGE_COMMUNITY_LIST_MASTER); |
d62a17ae | 1166 | if (list == NULL) |
1167 | return COMMUNITY_LIST_ERR_CANT_FIND_LIST; | |
1168 | ||
3571a6a2 | 1169 | cm = community_list_master_lookup(ch, LARGE_COMMUNITY_LIST_MASTER); |
d62a17ae | 1170 | /* Delete all of entry belongs to this community-list. */ |
1171 | if (!str) { | |
3571a6a2 | 1172 | community_list_delete(cm, list); |
35f6f850 | 1173 | route_map_notify_dependencies(name, RMAP_EVENT_LLIST_DELETED); |
d62a17ae | 1174 | return 0; |
1175 | } | |
57d187bc | 1176 | |
d62a17ae | 1177 | if (style == LARGE_COMMUNITY_LIST_STANDARD) |
1178 | lcom = lcommunity_str2com(str); | |
1179 | else | |
1180 | regex = bgp_regcomp(str); | |
57d187bc | 1181 | |
d62a17ae | 1182 | if (!lcom && !regex) |
1183 | return COMMUNITY_LIST_ERR_MALFORMED_VAL; | |
57d187bc | 1184 | |
d62a17ae | 1185 | if (lcom) |
1186 | entry = community_list_entry_lookup(list, lcom, direct); | |
1187 | else | |
1188 | entry = community_list_entry_lookup(list, str, direct); | |
57d187bc | 1189 | |
d62a17ae | 1190 | if (lcom) |
1191 | lcommunity_free(&lcom); | |
1192 | if (regex) | |
1193 | bgp_regex_free(regex); | |
57d187bc | 1194 | |
d62a17ae | 1195 | if (!entry) |
1196 | return COMMUNITY_LIST_ERR_CANT_FIND_LIST; | |
57d187bc | 1197 | |
3571a6a2 | 1198 | community_list_entry_delete(cm, list, entry); |
35f6f850 | 1199 | route_map_notify_dependencies(name, RMAP_EVENT_LLIST_DELETED); |
57d187bc | 1200 | |
d62a17ae | 1201 | return 0; |
57d187bc JS |
1202 | } |
1203 | ||
718e3744 | 1204 | /* Set extcommunity-list. */ |
d62a17ae | 1205 | int extcommunity_list_set(struct community_list_handler *ch, const char *name, |
2f8cc0e5 DA |
1206 | const char *str, const char *seq, int direct, |
1207 | int style) | |
718e3744 | 1208 | { |
d62a17ae | 1209 | struct community_entry *entry = NULL; |
1210 | struct community_list *list; | |
1211 | struct ecommunity *ecom = NULL; | |
1212 | regex_t *regex = NULL; | |
2f8cc0e5 DA |
1213 | int64_t seqnum = COMMUNITY_SEQ_NUMBER_AUTO; |
1214 | ||
1215 | if (seq) | |
1216 | seqnum = (int64_t)atol(seq); | |
718e3744 | 1217 | |
fa301630 | 1218 | if (str == NULL) |
1219 | return COMMUNITY_LIST_ERR_MALFORMED_VAL; | |
1220 | ||
d62a17ae | 1221 | /* Get community list. */ |
1222 | list = community_list_get(ch, name, EXTCOMMUNITY_LIST_MASTER); | |
718e3744 | 1223 | |
d62a17ae | 1224 | /* When community-list already has entry, new entry should have same |
1225 | style. If you want to have mixed style community-list, you can | |
1226 | comment out this check. */ | |
1227 | if (!community_list_empty_p(list)) { | |
1228 | struct community_entry *first; | |
718e3744 | 1229 | |
d62a17ae | 1230 | first = list->head; |
718e3744 | 1231 | |
d62a17ae | 1232 | if (style != first->style) { |
1233 | return (first->style == EXTCOMMUNITY_LIST_STANDARD | |
1234 | ? COMMUNITY_LIST_ERR_STANDARD_CONFLICT | |
1235 | : COMMUNITY_LIST_ERR_EXPANDED_CONFLICT); | |
1236 | } | |
fee6e4e4 | 1237 | } |
718e3744 | 1238 | |
d62a17ae | 1239 | if (style == EXTCOMMUNITY_LIST_STANDARD) |
1240 | ecom = ecommunity_str2com(str, 0, 1); | |
1241 | else | |
1242 | regex = bgp_regcomp(str); | |
1243 | ||
1244 | if (!ecom && !regex) | |
1245 | return COMMUNITY_LIST_ERR_MALFORMED_VAL; | |
1246 | ||
1247 | if (ecom) | |
1248 | ecom->str = | |
1249 | ecommunity_ecom2str(ecom, ECOMMUNITY_FORMAT_DISPLAY, 0); | |
1250 | ||
1251 | entry = community_entry_new(); | |
1252 | entry->direct = direct; | |
1253 | entry->style = style; | |
d3f6c580 | 1254 | entry->any = false; |
d62a17ae | 1255 | if (ecom) |
1256 | entry->config = ecommunity_ecom2str( | |
1257 | ecom, ECOMMUNITY_FORMAT_COMMUNITY_LIST, 0); | |
1258 | else if (regex) | |
1259 | entry->config = XSTRDUP(MTYPE_COMMUNITY_LIST_CONFIG, str); | |
1260 | ||
1261 | entry->u.ecom = ecom; | |
1262 | entry->reg = regex; | |
2f8cc0e5 | 1263 | entry->seq = seqnum; |
d62a17ae | 1264 | |
1265 | /* Do not put duplicated community entry. */ | |
1266 | if (community_list_dup_check(list, entry)) | |
1267 | community_entry_free(entry); | |
1268 | else { | |
2f8cc0e5 DA |
1269 | community_list_entry_add(list, entry, ch, |
1270 | EXTCOMMUNITY_LIST_MASTER); | |
d62a17ae | 1271 | route_map_notify_dependencies(name, RMAP_EVENT_ECLIST_ADDED); |
1272 | } | |
718e3744 | 1273 | |
d62a17ae | 1274 | return 0; |
718e3744 | 1275 | } |
1276 | ||
7298a8e1 QY |
1277 | /* Unset extcommunity-list. |
1278 | * | |
1279 | * When str is NULL, delete all extcommunity-list entries belonging to the | |
1280 | * specified name. | |
1281 | */ | |
d62a17ae | 1282 | int extcommunity_list_unset(struct community_list_handler *ch, const char *name, |
2f8cc0e5 DA |
1283 | const char *str, const char *seq, int direct, |
1284 | int style) | |
718e3744 | 1285 | { |
3571a6a2 | 1286 | struct community_list_master *cm = NULL; |
d62a17ae | 1287 | struct community_entry *entry = NULL; |
1288 | struct community_list *list; | |
1289 | struct ecommunity *ecom = NULL; | |
1290 | ||
1291 | /* Lookup extcommunity list. */ | |
e237b0d2 | 1292 | list = community_list_lookup(ch, name, 0, EXTCOMMUNITY_LIST_MASTER); |
d62a17ae | 1293 | if (list == NULL) |
1294 | return COMMUNITY_LIST_ERR_CANT_FIND_LIST; | |
1295 | ||
3571a6a2 | 1296 | cm = community_list_master_lookup(ch, EXTCOMMUNITY_LIST_MASTER); |
d62a17ae | 1297 | /* Delete all of entry belongs to this extcommunity-list. */ |
7298a8e1 | 1298 | if (!str) { |
3571a6a2 | 1299 | community_list_delete(cm, list); |
d62a17ae | 1300 | route_map_notify_dependencies(name, RMAP_EVENT_ECLIST_DELETED); |
1301 | return 0; | |
1302 | } | |
718e3744 | 1303 | |
7298a8e1 QY |
1304 | if (style == EXTCOMMUNITY_LIST_STANDARD) |
1305 | ecom = ecommunity_str2com(str, 0, 1); | |
718e3744 | 1306 | |
d62a17ae | 1307 | if (ecom) { |
1308 | entry = community_list_entry_lookup(list, ecom, direct); | |
1309 | ecommunity_free(&ecom); | |
1310 | } else | |
1311 | entry = community_list_entry_lookup(list, str, direct); | |
fee6e4e4 | 1312 | |
d62a17ae | 1313 | if (!entry) |
1314 | return COMMUNITY_LIST_ERR_CANT_FIND_LIST; | |
718e3744 | 1315 | |
3571a6a2 | 1316 | community_list_entry_delete(cm, list, entry); |
d62a17ae | 1317 | route_map_notify_dependencies(name, RMAP_EVENT_ECLIST_DELETED); |
718e3744 | 1318 | |
d62a17ae | 1319 | return 0; |
718e3744 | 1320 | } |
1321 | ||
1322 | /* Initializa community-list. Return community-list handler. */ | |
d62a17ae | 1323 | struct community_list_handler *community_list_init(void) |
718e3744 | 1324 | { |
d62a17ae | 1325 | struct community_list_handler *ch; |
1326 | ch = XCALLOC(MTYPE_COMMUNITY_LIST_HANDLER, | |
1327 | sizeof(struct community_list_handler)); | |
3571a6a2 DS |
1328 | |
1329 | ch->community_list.hash = | |
1330 | hash_create_size(4, bgp_clist_hash_key_community_list, | |
1331 | bgp_clist_hash_cmp_community_list, | |
1332 | "Community List Number Quick Lookup"); | |
1333 | ||
1334 | ch->extcommunity_list.hash = | |
1335 | hash_create_size(4, bgp_clist_hash_key_community_list, | |
1336 | bgp_clist_hash_cmp_community_list, | |
1337 | "Extended Community List Quick Lookup"); | |
1338 | ||
1339 | ch->lcommunity_list.hash = | |
1340 | hash_create_size(4, bgp_clist_hash_key_community_list, | |
1341 | bgp_clist_hash_cmp_community_list, | |
1342 | "Large Community List Quick Lookup"); | |
1343 | ||
d62a17ae | 1344 | return ch; |
718e3744 | 1345 | } |
1346 | ||
1347 | /* Terminate community-list. */ | |
d62a17ae | 1348 | void community_list_terminate(struct community_list_handler *ch) |
718e3744 | 1349 | { |
d62a17ae | 1350 | struct community_list_master *cm; |
1351 | struct community_list *list; | |
1352 | ||
1353 | cm = &ch->community_list; | |
1354 | while ((list = cm->num.head) != NULL) | |
3571a6a2 | 1355 | community_list_delete(cm, list); |
d62a17ae | 1356 | while ((list = cm->str.head) != NULL) |
3571a6a2 DS |
1357 | community_list_delete(cm, list); |
1358 | hash_free(cm->hash); | |
d62a17ae | 1359 | |
1360 | cm = &ch->lcommunity_list; | |
1361 | while ((list = cm->num.head) != NULL) | |
3571a6a2 | 1362 | community_list_delete(cm, list); |
d62a17ae | 1363 | while ((list = cm->str.head) != NULL) |
3571a6a2 DS |
1364 | community_list_delete(cm, list); |
1365 | hash_free(cm->hash); | |
d62a17ae | 1366 | |
1367 | cm = &ch->extcommunity_list; | |
1368 | while ((list = cm->num.head) != NULL) | |
3571a6a2 | 1369 | community_list_delete(cm, list); |
d62a17ae | 1370 | while ((list = cm->str.head) != NULL) |
3571a6a2 DS |
1371 | community_list_delete(cm, list); |
1372 | hash_free(cm->hash); | |
d62a17ae | 1373 | |
1374 | XFREE(MTYPE_COMMUNITY_LIST_HANDLER, ch); | |
718e3744 | 1375 | } |