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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" |
718e3744 | 36 | #include "bgpd/bgp_aspath.h" |
37 | #include "bgpd/bgp_regex.h" | |
38 | #include "bgpd/bgp_clist.h" | |
6b0655a2 | 39 | |
2f8cc0e5 DA |
40 | /* Calculate new sequential number. */ |
41 | static int64_t bgp_clist_new_seq_get(struct community_list *list) | |
42 | { | |
43 | int64_t maxseq; | |
44 | int64_t newseq; | |
45 | struct community_entry *entry; | |
46 | ||
1bb379bf | 47 | maxseq = 0; |
2f8cc0e5 DA |
48 | |
49 | for (entry = list->head; entry; entry = entry->next) { | |
50 | if (maxseq < entry->seq) | |
51 | maxseq = entry->seq; | |
52 | } | |
53 | ||
54 | newseq = ((maxseq / 5) * 5) + 5; | |
55 | ||
56 | return (newseq > UINT_MAX) ? UINT_MAX : newseq; | |
57 | } | |
58 | ||
59 | /* Return community-list entry which has same seq number. */ | |
60 | static struct community_entry *bgp_clist_seq_check(struct community_list *list, | |
61 | int64_t seq) | |
62 | { | |
63 | struct community_entry *entry; | |
64 | ||
65 | for (entry = list->head; entry; entry = entry->next) | |
66 | if (entry->seq == seq) | |
67 | return entry; | |
68 | return NULL; | |
69 | } | |
70 | ||
d8b87afe | 71 | static uint32_t bgp_clist_hash_key_community_list(const void *data) |
3571a6a2 | 72 | { |
d8b87afe | 73 | struct community_list *cl = (struct community_list *) data; |
3571a6a2 | 74 | |
e237b0d2 DS |
75 | if (cl->name_hash) |
76 | return cl->name_hash; | |
77 | ||
78 | cl->name_hash = bgp_clist_hash_key(cl->name); | |
79 | return cl->name_hash; | |
3571a6a2 DS |
80 | } |
81 | ||
82 | static bool bgp_clist_hash_cmp_community_list(const void *a1, const void *a2) | |
83 | { | |
84 | const struct community_list *cl1 = a1; | |
85 | const struct community_list *cl2 = a2; | |
86 | ||
e237b0d2 DS |
87 | if (cl1->name_hash != cl2->name_hash) |
88 | return false; | |
89 | ||
3571a6a2 DS |
90 | if (strcmp(cl1->name, cl2->name) == 0) |
91 | return true; | |
92 | ||
93 | return false; | |
94 | } | |
95 | ||
718e3744 | 96 | /* Lookup master structure for community-list or |
97 | extcommunity-list. */ | |
98 | struct community_list_master * | |
d62a17ae | 99 | community_list_master_lookup(struct community_list_handler *ch, int master) |
718e3744 | 100 | { |
d62a17ae | 101 | if (ch) |
102 | switch (master) { | |
103 | case COMMUNITY_LIST_MASTER: | |
104 | return &ch->community_list; | |
105 | case EXTCOMMUNITY_LIST_MASTER: | |
106 | return &ch->extcommunity_list; | |
107 | case LARGE_COMMUNITY_LIST_MASTER: | |
108 | return &ch->lcommunity_list; | |
109 | } | |
110 | return NULL; | |
718e3744 | 111 | } |
112 | ||
113 | /* Allocate a new community list entry. */ | |
d62a17ae | 114 | static struct community_entry *community_entry_new(void) |
718e3744 | 115 | { |
d62a17ae | 116 | return XCALLOC(MTYPE_COMMUNITY_LIST_ENTRY, |
117 | sizeof(struct community_entry)); | |
718e3744 | 118 | } |
119 | ||
120 | /* Free community list entry. */ | |
d62a17ae | 121 | static void community_entry_free(struct community_entry *entry) |
718e3744 | 122 | { |
d62a17ae | 123 | switch (entry->style) { |
124 | case COMMUNITY_LIST_STANDARD: | |
125 | if (entry->u.com) | |
3c1f53de | 126 | community_free(&entry->u.com); |
d62a17ae | 127 | break; |
128 | case LARGE_COMMUNITY_LIST_STANDARD: | |
129 | if (entry->u.lcom) | |
130 | lcommunity_free(&entry->u.lcom); | |
131 | break; | |
132 | case EXTCOMMUNITY_LIST_STANDARD: | |
133 | /* In case of standard extcommunity-list, configuration string | |
134 | is made by ecommunity_ecom2str(). */ | |
0a22ddfb | 135 | XFREE(MTYPE_ECOMMUNITY_STR, entry->config); |
d62a17ae | 136 | if (entry->u.ecom) |
137 | ecommunity_free(&entry->u.ecom); | |
138 | break; | |
139 | case COMMUNITY_LIST_EXPANDED: | |
140 | case EXTCOMMUNITY_LIST_EXPANDED: | |
141 | case LARGE_COMMUNITY_LIST_EXPANDED: | |
0a22ddfb | 142 | XFREE(MTYPE_COMMUNITY_LIST_CONFIG, entry->config); |
d62a17ae | 143 | if (entry->reg) |
144 | bgp_regex_free(entry->reg); | |
145 | default: | |
146 | break; | |
147 | } | |
148 | XFREE(MTYPE_COMMUNITY_LIST_ENTRY, entry); | |
718e3744 | 149 | } |
150 | ||
151 | /* Allocate a new community-list. */ | |
d62a17ae | 152 | static struct community_list *community_list_new(void) |
718e3744 | 153 | { |
d62a17ae | 154 | return XCALLOC(MTYPE_COMMUNITY_LIST, sizeof(struct community_list)); |
718e3744 | 155 | } |
156 | ||
157 | /* Free community-list. */ | |
d62a17ae | 158 | static void community_list_free(struct community_list *list) |
718e3744 | 159 | { |
0a22ddfb | 160 | XFREE(MTYPE_COMMUNITY_LIST_NAME, list->name); |
d62a17ae | 161 | XFREE(MTYPE_COMMUNITY_LIST, list); |
718e3744 | 162 | } |
163 | ||
94f2b392 | 164 | static struct community_list * |
d62a17ae | 165 | community_list_insert(struct community_list_handler *ch, const char *name, |
166 | int master) | |
718e3744 | 167 | { |
d62a17ae | 168 | size_t i; |
169 | long number; | |
170 | struct community_list *new; | |
171 | struct community_list *point; | |
172 | struct community_list_list *list; | |
173 | struct community_list_master *cm; | |
174 | ||
175 | /* Lookup community-list master. */ | |
176 | cm = community_list_master_lookup(ch, master); | |
177 | if (!cm) | |
178 | return NULL; | |
179 | ||
180 | /* Allocate new community_list and copy given name. */ | |
181 | new = community_list_new(); | |
182 | new->name = XSTRDUP(MTYPE_COMMUNITY_LIST_NAME, name); | |
e237b0d2 | 183 | new->name_hash = bgp_clist_hash_key_community_list(new); |
d62a17ae | 184 | |
3571a6a2 DS |
185 | /* Save for later */ |
186 | hash_get(cm->hash, new, hash_alloc_intern); | |
187 | ||
d62a17ae | 188 | /* If name is made by all digit character. We treat it as |
189 | number. */ | |
190 | for (number = 0, i = 0; i < strlen(name); i++) { | |
fefa5e0f | 191 | if (isdigit((unsigned char)name[i])) |
d62a17ae | 192 | number = (number * 10) + (name[i] - '0'); |
193 | else | |
194 | break; | |
195 | } | |
718e3744 | 196 | |
d62a17ae | 197 | /* In case of name is all digit character */ |
198 | if (i == strlen(name)) { | |
199 | new->sort = COMMUNITY_LIST_NUMBER; | |
718e3744 | 200 | |
d62a17ae | 201 | /* Set access_list to number list. */ |
202 | list = &cm->num; | |
718e3744 | 203 | |
d62a17ae | 204 | for (point = list->head; point; point = point->next) |
205 | if (atol(point->name) >= number) | |
206 | break; | |
207 | } else { | |
208 | new->sort = COMMUNITY_LIST_STRING; | |
718e3744 | 209 | |
d62a17ae | 210 | /* Set access_list to string list. */ |
211 | list = &cm->str; | |
718e3744 | 212 | |
d62a17ae | 213 | /* Set point to insertion point. */ |
214 | for (point = list->head; point; point = point->next) | |
215 | if (strcmp(point->name, name) >= 0) | |
216 | break; | |
217 | } | |
718e3744 | 218 | |
d62a17ae | 219 | /* Link to upper list. */ |
220 | new->parent = list; | |
718e3744 | 221 | |
d62a17ae | 222 | /* In case of this is the first element of master. */ |
223 | if (list->head == NULL) { | |
224 | list->head = list->tail = new; | |
225 | return new; | |
226 | } | |
718e3744 | 227 | |
d62a17ae | 228 | /* In case of insertion is made at the tail of access_list. */ |
229 | if (point == NULL) { | |
230 | new->prev = list->tail; | |
231 | list->tail->next = new; | |
232 | list->tail = new; | |
233 | return new; | |
234 | } | |
718e3744 | 235 | |
d62a17ae | 236 | /* In case of insertion is made at the head of access_list. */ |
237 | if (point == list->head) { | |
238 | new->next = list->head; | |
239 | list->head->prev = new; | |
240 | list->head = new; | |
241 | return new; | |
242 | } | |
718e3744 | 243 | |
d62a17ae | 244 | /* Insertion is made at middle of the access_list. */ |
245 | new->next = point; | |
246 | new->prev = point->prev; | |
718e3744 | 247 | |
d62a17ae | 248 | if (point->prev) |
249 | point->prev->next = new; | |
250 | point->prev = new; | |
718e3744 | 251 | |
d62a17ae | 252 | return new; |
718e3744 | 253 | } |
254 | ||
d62a17ae | 255 | struct community_list *community_list_lookup(struct community_list_handler *ch, |
e237b0d2 DS |
256 | const char *name, |
257 | uint32_t name_hash, | |
258 | int master) | |
718e3744 | 259 | { |
3571a6a2 | 260 | struct community_list lookup; |
d62a17ae | 261 | struct community_list_master *cm; |
718e3744 | 262 | |
d62a17ae | 263 | if (!name) |
264 | return NULL; | |
718e3744 | 265 | |
d62a17ae | 266 | cm = community_list_master_lookup(ch, master); |
267 | if (!cm) | |
268 | return NULL; | |
718e3744 | 269 | |
3571a6a2 | 270 | lookup.name = (char *)name; |
e237b0d2 | 271 | lookup.name_hash = name_hash; |
3571a6a2 | 272 | return hash_get(cm->hash, &lookup, NULL); |
718e3744 | 273 | } |
274 | ||
94f2b392 | 275 | static struct community_list * |
d62a17ae | 276 | community_list_get(struct community_list_handler *ch, const char *name, |
277 | int master) | |
718e3744 | 278 | { |
d62a17ae | 279 | struct community_list *list; |
718e3744 | 280 | |
e237b0d2 | 281 | list = community_list_lookup(ch, name, 0, master); |
d62a17ae | 282 | if (!list) |
283 | list = community_list_insert(ch, name, master); | |
284 | return list; | |
718e3744 | 285 | } |
286 | ||
3571a6a2 DS |
287 | static void community_list_delete(struct community_list_master *cm, |
288 | struct community_list *list) | |
718e3744 | 289 | { |
d62a17ae | 290 | struct community_list_list *clist; |
291 | struct community_entry *entry, *next; | |
718e3744 | 292 | |
d62a17ae | 293 | for (entry = list->head; entry; entry = next) { |
294 | next = entry->next; | |
295 | community_entry_free(entry); | |
296 | } | |
718e3744 | 297 | |
d62a17ae | 298 | clist = list->parent; |
718e3744 | 299 | |
d62a17ae | 300 | if (list->next) |
301 | list->next->prev = list->prev; | |
302 | else | |
303 | clist->tail = list->prev; | |
718e3744 | 304 | |
d62a17ae | 305 | if (list->prev) |
306 | list->prev->next = list->next; | |
307 | else | |
308 | clist->head = list->next; | |
718e3744 | 309 | |
3571a6a2 | 310 | hash_release(cm->hash, list); |
d62a17ae | 311 | community_list_free(list); |
718e3744 | 312 | } |
313 | ||
88f1c947 | 314 | static bool community_list_empty_p(struct community_list *list) |
718e3744 | 315 | { |
88f1c947 | 316 | return list->head == NULL && list->tail == NULL; |
718e3744 | 317 | } |
6b0655a2 | 318 | |
718e3744 | 319 | /* Delete community-list entry from the list. */ |
3571a6a2 DS |
320 | static void community_list_entry_delete(struct community_list_master *cm, |
321 | struct community_list *list, | |
3f54c705 | 322 | struct community_entry *entry) |
718e3744 | 323 | { |
d62a17ae | 324 | if (entry->next) |
325 | entry->next->prev = entry->prev; | |
326 | else | |
327 | list->tail = entry->prev; | |
718e3744 | 328 | |
d62a17ae | 329 | if (entry->prev) |
330 | entry->prev->next = entry->next; | |
331 | else | |
332 | list->head = entry->next; | |
718e3744 | 333 | |
d62a17ae | 334 | community_entry_free(entry); |
718e3744 | 335 | |
d62a17ae | 336 | if (community_list_empty_p(list)) |
3571a6a2 | 337 | community_list_delete(cm, list); |
718e3744 | 338 | } |
339 | ||
2f8cc0e5 DA |
340 | /* Add community-list entry to the list. */ |
341 | static void community_list_entry_add(struct community_list *list, | |
342 | struct community_entry *entry, | |
343 | struct community_list_handler *ch, | |
344 | int master) | |
345 | { | |
346 | struct community_list_master *cm = NULL; | |
347 | struct community_entry *replace; | |
348 | struct community_entry *point; | |
349 | ||
350 | cm = community_list_master_lookup(ch, master); | |
351 | ||
352 | /* Automatic assignment of seq no. */ | |
353 | if (entry->seq == COMMUNITY_SEQ_NUMBER_AUTO) | |
354 | entry->seq = bgp_clist_new_seq_get(list); | |
355 | ||
356 | if (list->tail && entry->seq > list->tail->seq) | |
357 | point = NULL; | |
358 | else { | |
359 | replace = bgp_clist_seq_check(list, entry->seq); | |
360 | if (replace) | |
361 | community_list_entry_delete(cm, list, entry); | |
362 | ||
363 | /* Check insert point. */ | |
364 | for (point = list->head; point; point = point->next) | |
365 | if (point->seq >= entry->seq) | |
366 | break; | |
367 | } | |
368 | ||
369 | /* In case of this is the first element of the list. */ | |
370 | entry->next = point; | |
371 | ||
372 | if (point) { | |
373 | if (point->prev) | |
374 | point->prev->next = entry; | |
375 | else | |
376 | list->head = entry; | |
377 | ||
378 | entry->prev = point->prev; | |
379 | point->prev = entry; | |
380 | } else { | |
381 | if (list->tail) | |
382 | list->tail->next = entry; | |
383 | else | |
384 | list->head = entry; | |
385 | ||
386 | entry->prev = list->tail; | |
387 | list->tail = entry; | |
388 | } | |
389 | } | |
390 | ||
718e3744 | 391 | /* Lookup community-list entry from the list. */ |
392 | static struct community_entry * | |
d62a17ae | 393 | community_list_entry_lookup(struct community_list *list, const void *arg, |
394 | int direct) | |
718e3744 | 395 | { |
d62a17ae | 396 | struct community_entry *entry; |
397 | ||
398 | for (entry = list->head; entry; entry = entry->next) { | |
399 | switch (entry->style) { | |
400 | case COMMUNITY_LIST_STANDARD: | |
401 | if (entry->direct == direct | |
402 | && community_cmp(entry->u.com, arg)) | |
403 | return entry; | |
404 | break; | |
405 | case EXTCOMMUNITY_LIST_STANDARD: | |
406 | if (entry->direct == direct | |
407 | && ecommunity_cmp(entry->u.ecom, arg)) | |
408 | return entry; | |
409 | break; | |
410 | case LARGE_COMMUNITY_LIST_STANDARD: | |
411 | if (entry->direct == direct | |
412 | && lcommunity_cmp(entry->u.lcom, arg)) | |
413 | return entry; | |
414 | break; | |
415 | case COMMUNITY_LIST_EXPANDED: | |
416 | case EXTCOMMUNITY_LIST_EXPANDED: | |
417 | case LARGE_COMMUNITY_LIST_EXPANDED: | |
418 | if (entry->direct == direct | |
419 | && strcmp(entry->config, arg) == 0) | |
420 | return entry; | |
421 | break; | |
422 | default: | |
423 | break; | |
424 | } | |
425 | } | |
426 | return NULL; | |
718e3744 | 427 | } |
6b0655a2 | 428 | |
d62a17ae | 429 | static char *community_str_get(struct community *com, int i) |
5cbea288 | 430 | { |
d7c0a89a QY |
431 | uint32_t comval; |
432 | uint16_t as; | |
433 | uint16_t val; | |
d62a17ae | 434 | char *str; |
d62a17ae | 435 | |
d7c0a89a | 436 | memcpy(&comval, com_nthval(com, i), sizeof(uint32_t)); |
d62a17ae | 437 | comval = ntohl(comval); |
438 | ||
439 | switch (comval) { | |
440 | case COMMUNITY_INTERNET: | |
aeab4a80 | 441 | str = XSTRDUP(MTYPE_COMMUNITY_STR, "internet"); |
d62a17ae | 442 | break; |
aa861c10 | 443 | case COMMUNITY_GSHUT: |
aeab4a80 | 444 | str = XSTRDUP(MTYPE_COMMUNITY_STR, "graceful-shutdown"); |
aa861c10 C |
445 | break; |
446 | case COMMUNITY_ACCEPT_OWN: | |
aeab4a80 | 447 | str = XSTRDUP(MTYPE_COMMUNITY_STR, "accept-own"); |
aa861c10 C |
448 | break; |
449 | case COMMUNITY_ROUTE_FILTER_TRANSLATED_v4: | |
aeab4a80 QY |
450 | str = XSTRDUP(MTYPE_COMMUNITY_STR, |
451 | "route-filter-translated-v4"); | |
aa861c10 C |
452 | break; |
453 | case COMMUNITY_ROUTE_FILTER_v4: | |
aeab4a80 | 454 | str = XSTRDUP(MTYPE_COMMUNITY_STR, "route-filter-v4"); |
aa861c10 C |
455 | break; |
456 | case COMMUNITY_ROUTE_FILTER_TRANSLATED_v6: | |
aeab4a80 QY |
457 | str = XSTRDUP(MTYPE_COMMUNITY_STR, |
458 | "route-filter-translated-v6"); | |
aa861c10 C |
459 | break; |
460 | case COMMUNITY_ROUTE_FILTER_v6: | |
aeab4a80 | 461 | str = XSTRDUP(MTYPE_COMMUNITY_STR, "route-filter-v6"); |
aa861c10 C |
462 | break; |
463 | case COMMUNITY_LLGR_STALE: | |
aeab4a80 | 464 | str = XSTRDUP(MTYPE_COMMUNITY_STR, "llgr-stale"); |
aa861c10 C |
465 | break; |
466 | case COMMUNITY_NO_LLGR: | |
aeab4a80 | 467 | str = XSTRDUP(MTYPE_COMMUNITY_STR, "no-llgr"); |
aa861c10 C |
468 | break; |
469 | case COMMUNITY_ACCEPT_OWN_NEXTHOP: | |
aeab4a80 | 470 | str = XSTRDUP(MTYPE_COMMUNITY_STR, "accept-own-nexthop"); |
aa861c10 C |
471 | break; |
472 | case COMMUNITY_BLACKHOLE: | |
aeab4a80 | 473 | str = XSTRDUP(MTYPE_COMMUNITY_STR, "blackhole"); |
aa861c10 | 474 | break; |
d62a17ae | 475 | case COMMUNITY_NO_EXPORT: |
aeab4a80 | 476 | str = XSTRDUP(MTYPE_COMMUNITY_STR, "no-export"); |
d62a17ae | 477 | break; |
478 | case COMMUNITY_NO_ADVERTISE: | |
aeab4a80 | 479 | str = XSTRDUP(MTYPE_COMMUNITY_STR, "no-advertise"); |
d62a17ae | 480 | break; |
481 | case COMMUNITY_LOCAL_AS: | |
aeab4a80 | 482 | str = XSTRDUP(MTYPE_COMMUNITY_STR, "local-AS"); |
d62a17ae | 483 | break; |
aa861c10 | 484 | case COMMUNITY_NO_PEER: |
aeab4a80 | 485 | str = XSTRDUP(MTYPE_COMMUNITY_STR, "no-peer"); |
7f323236 | 486 | break; |
809d6365 | 487 | default: |
aeab4a80 | 488 | str = XSTRDUP(MTYPE_COMMUNITY_STR, "65536:65535"); |
d62a17ae | 489 | as = (comval >> 16) & 0xFFFF; |
490 | val = comval & 0xFFFF; | |
aeab4a80 | 491 | snprintf(str, strlen(str), "%u:%d", as, val); |
d62a17ae | 492 | break; |
493 | } | |
5cbea288 | 494 | |
d62a17ae | 495 | return str; |
5cbea288 DS |
496 | } |
497 | ||
498 | /* Internal function to perform regular expression match for | |
2acb4ac2 | 499 | * a single community. */ |
88f1c947 | 500 | static bool community_regexp_include(regex_t *reg, struct community *com, int i) |
5cbea288 | 501 | { |
d62a17ae | 502 | char *str; |
503 | int rv; | |
5cbea288 | 504 | |
d62a17ae | 505 | /* When there is no communities attribute it is treated as empty string. |
506 | */ | |
507 | if (com == NULL || com->size == 0) | |
508 | str = XSTRDUP(MTYPE_COMMUNITY_STR, ""); | |
509 | else | |
510 | str = community_str_get(com, i); | |
5cbea288 | 511 | |
d62a17ae | 512 | /* Regular expression match. */ |
513 | rv = regexec(reg, str, 0, NULL, 0); | |
b84ee83b | 514 | |
d62a17ae | 515 | XFREE(MTYPE_COMMUNITY_STR, str); |
b84ee83b | 516 | |
88f1c947 | 517 | return rv == 0; |
5cbea288 DS |
518 | } |
519 | ||
718e3744 | 520 | /* Internal function to perform regular expression match for community |
521 | attribute. */ | |
88f1c947 | 522 | static bool community_regexp_match(struct community *com, regex_t *reg) |
718e3744 | 523 | { |
d62a17ae | 524 | const char *str; |
718e3744 | 525 | |
d62a17ae | 526 | /* When there is no communities attribute it is treated as empty |
527 | string. */ | |
528 | if (com == NULL || com->size == 0) | |
529 | str = ""; | |
530 | else | |
a69ea8ae | 531 | str = community_str(com, false); |
718e3744 | 532 | |
d62a17ae | 533 | /* Regular expression match. */ |
534 | if (regexec(reg, str, 0, NULL, 0) == 0) | |
88f1c947 | 535 | return true; |
718e3744 | 536 | |
d62a17ae | 537 | /* No match. */ |
88f1c947 | 538 | return false; |
718e3744 | 539 | } |
540 | ||
d62a17ae | 541 | static char *lcommunity_str_get(struct lcommunity *lcom, int i) |
57d187bc | 542 | { |
d62a17ae | 543 | struct lcommunity_val lcomval; |
d7c0a89a QY |
544 | uint32_t globaladmin; |
545 | uint32_t localdata1; | |
546 | uint32_t localdata2; | |
d62a17ae | 547 | char *str; |
1be1693e | 548 | const uint8_t *ptr; |
d62a17ae | 549 | char *pnt; |
550 | ||
ff9104a2 | 551 | ptr = lcom->val + (i * LCOMMUNITY_SIZE); |
d62a17ae | 552 | |
553 | memcpy(&lcomval, ptr, LCOMMUNITY_SIZE); | |
554 | ||
555 | /* Allocate memory. 48 bytes taken off bgp_lcommunity.c */ | |
556 | str = pnt = XMALLOC(MTYPE_LCOMMUNITY_STR, 48); | |
557 | ||
d7c0a89a | 558 | ptr = (uint8_t *)lcomval.val; |
937652c6 DL |
559 | ptr = ptr_get_be32(ptr, &globaladmin); |
560 | ptr = ptr_get_be32(ptr, &localdata1); | |
561 | ptr = ptr_get_be32(ptr, &localdata2); | |
562 | (void)ptr; /* consume value */ | |
d62a17ae | 563 | |
564 | sprintf(pnt, "%u:%u:%u", globaladmin, localdata1, localdata2); | |
565 | pnt += strlen(pnt); | |
566 | *pnt = '\0'; | |
567 | ||
568 | return str; | |
57d187bc JS |
569 | } |
570 | ||
571 | /* Internal function to perform regular expression match for | |
2acb4ac2 | 572 | * a single community. */ |
88f1c947 DA |
573 | static bool lcommunity_regexp_include(regex_t *reg, struct lcommunity *lcom, |
574 | int i) | |
57d187bc | 575 | { |
d62a17ae | 576 | char *str; |
577 | ||
578 | /* When there is no communities attribute it is treated as empty string. | |
579 | */ | |
580 | if (lcom == NULL || lcom->size == 0) | |
581 | str = XSTRDUP(MTYPE_LCOMMUNITY_STR, ""); | |
582 | else | |
583 | str = lcommunity_str_get(lcom, i); | |
584 | ||
585 | /* Regular expression match. */ | |
586 | if (regexec(reg, str, 0, NULL, 0) == 0) { | |
587 | XFREE(MTYPE_LCOMMUNITY_STR, str); | |
88f1c947 | 588 | return true; |
d62a17ae | 589 | } |
57d187bc | 590 | |
d62a17ae | 591 | XFREE(MTYPE_LCOMMUNITY_STR, str); |
592 | /* No match. */ | |
88f1c947 | 593 | return false; |
57d187bc JS |
594 | } |
595 | ||
88f1c947 | 596 | static bool lcommunity_regexp_match(struct lcommunity *com, regex_t *reg) |
57d187bc | 597 | { |
d62a17ae | 598 | const char *str; |
57d187bc | 599 | |
d62a17ae | 600 | /* When there is no communities attribute it is treated as empty |
601 | string. */ | |
602 | if (com == NULL || com->size == 0) | |
603 | str = ""; | |
604 | else | |
8d9b8ed9 | 605 | str = lcommunity_str(com, false); |
57d187bc | 606 | |
d62a17ae | 607 | /* Regular expression match. */ |
608 | if (regexec(reg, str, 0, NULL, 0) == 0) | |
88f1c947 | 609 | return true; |
57d187bc | 610 | |
d62a17ae | 611 | /* No match. */ |
88f1c947 | 612 | return false; |
57d187bc JS |
613 | } |
614 | ||
615 | ||
88f1c947 | 616 | static bool ecommunity_regexp_match(struct ecommunity *ecom, regex_t *reg) |
8708b74f | 617 | { |
d62a17ae | 618 | const char *str; |
8708b74f | 619 | |
d62a17ae | 620 | /* When there is no communities attribute it is treated as empty |
621 | string. */ | |
622 | if (ecom == NULL || ecom->size == 0) | |
623 | str = ""; | |
624 | else | |
625 | str = ecommunity_str(ecom); | |
8708b74f | 626 | |
d62a17ae | 627 | /* Regular expression match. */ |
628 | if (regexec(reg, str, 0, NULL, 0) == 0) | |
88f1c947 | 629 | return true; |
8708b74f | 630 | |
d62a17ae | 631 | /* No match. */ |
88f1c947 | 632 | return false; |
8708b74f | 633 | } |
634 | ||
ffd0c037 | 635 | #if 0 |
718e3744 | 636 | /* Delete community attribute using regular expression match. Return |
637 | modified communites attribute. */ | |
638 | static struct community * | |
8708b74f | 639 | community_regexp_delete (struct community *com, regex_t * reg) |
718e3744 | 640 | { |
aa861c10 C |
641 | int i; |
642 | uint32_t comval; | |
643 | /* Maximum is "65535:65535" + '\0'. */ | |
644 | char c[12]; | |
645 | const char *str; | |
646 | ||
647 | if (!com) | |
648 | return NULL; | |
649 | ||
650 | i = 0; | |
651 | while (i < com->size) | |
652 | { | |
0d6f7fd6 | 653 | memcpy (&comval, com_nthval (com, i), sizeof(uint32_t)); |
aa861c10 C |
654 | comval = ntohl (comval); |
655 | ||
656 | switch (comval) { | |
657 | case COMMUNITY_INTERNET: | |
658 | str = "internet"; | |
659 | break; | |
660 | case COMMUNITY_ACCEPT_OWN: | |
661 | str = "accept-own"; | |
662 | break; | |
663 | case COMMUNITY_ROUTE_FILTER_TRANSLATED_v4: | |
664 | str = "route-filter-translated-v4"; | |
665 | break; | |
666 | case COMMUNITY_ROUTE_FILTER_v4: | |
667 | str = "route-filter-v4"; | |
668 | break; | |
669 | case COMMUNITY_ROUTE_FILTER_TRANSLATED_v6: | |
670 | str = "route-filter-translated-v6"; | |
671 | break; | |
672 | case COMMUNITY_ROUTE_FILTER_v6: | |
673 | str = "route-filter-v6"; | |
674 | break; | |
675 | case COMMUNITY_LLGR_STALE: | |
676 | str = "llgr-stale"; | |
677 | break; | |
678 | case COMMUNITY_NO_LLGR: | |
679 | str = "no-llgr"; | |
680 | break; | |
681 | case COMMUNITY_ACCEPT_OWN_NEXTHOP: | |
682 | str = "accept-own-nexthop"; | |
683 | break; | |
684 | case COMMUNITY_BLACKHOLE: | |
685 | str = "blackhole"; | |
686 | break; | |
687 | case COMMUNITY_NO_EXPORT: | |
688 | str = "no-export"; | |
689 | break; | |
690 | case COMMUNITY_NO_ADVERTISE: | |
691 | str = "no-advertise"; | |
692 | break; | |
693 | case COMMUNITY_LOCAL_AS: | |
694 | str = "local-AS"; | |
695 | break; | |
696 | case COMMUNITY_NO_PEER: | |
697 | str = "no-peer"; | |
698 | break; | |
699 | default: | |
700 | sprintf (c, "%d:%d", (comval >> 16) & 0xFFFF, | |
701 | comval & 0xFFFF); | |
702 | str = c; | |
703 | break; | |
704 | } | |
705 | ||
706 | if (regexec (reg, str, 0, NULL, 0) == 0) | |
707 | community_del_val (com, com_nthval (com, i)); | |
708 | else | |
709 | i++; | |
710 | } | |
711 | return com; | |
718e3744 | 712 | } |
ffd0c037 | 713 | #endif |
718e3744 | 714 | |
715 | /* When given community attribute matches to the community-list return | |
716 | 1 else return 0. */ | |
88f1c947 | 717 | bool community_list_match(struct community *com, struct community_list *list) |
718e3744 | 718 | { |
d62a17ae | 719 | struct community_entry *entry; |
720 | ||
721 | for (entry = list->head; entry; entry = entry->next) { | |
722 | if (entry->any) | |
88f1c947 | 723 | return entry->direct == COMMUNITY_PERMIT; |
d62a17ae | 724 | |
725 | if (entry->style == COMMUNITY_LIST_STANDARD) { | |
726 | if (community_include(entry->u.com, COMMUNITY_INTERNET)) | |
88f1c947 | 727 | return entry->direct == COMMUNITY_PERMIT; |
d62a17ae | 728 | |
729 | if (community_match(com, entry->u.com)) | |
88f1c947 | 730 | return entry->direct == COMMUNITY_PERMIT; |
d62a17ae | 731 | } else if (entry->style == COMMUNITY_LIST_EXPANDED) { |
732 | if (community_regexp_match(com, entry->reg)) | |
88f1c947 | 733 | return entry->direct == COMMUNITY_PERMIT; |
d62a17ae | 734 | } |
735 | } | |
88f1c947 | 736 | return false; |
8708b74f | 737 | } |
738 | ||
88f1c947 | 739 | bool lcommunity_list_match(struct lcommunity *lcom, struct community_list *list) |
57d187bc | 740 | { |
d62a17ae | 741 | struct community_entry *entry; |
742 | ||
743 | for (entry = list->head; entry; entry = entry->next) { | |
744 | if (entry->any) | |
88f1c947 | 745 | return entry->direct == COMMUNITY_PERMIT; |
d62a17ae | 746 | |
747 | if (entry->style == LARGE_COMMUNITY_LIST_STANDARD) { | |
748 | if (lcommunity_match(lcom, entry->u.lcom)) | |
88f1c947 | 749 | return entry->direct == COMMUNITY_PERMIT; |
d62a17ae | 750 | } else if (entry->style == LARGE_COMMUNITY_LIST_EXPANDED) { |
751 | if (lcommunity_regexp_match(lcom, entry->reg)) | |
88f1c947 | 752 | return entry->direct == COMMUNITY_PERMIT; |
d62a17ae | 753 | } |
754 | } | |
88f1c947 | 755 | return false; |
57d187bc JS |
756 | } |
757 | ||
f8463998 | 758 | |
759 | /* Perform exact matching. In case of expanded large-community-list, do | |
760 | * same thing as lcommunity_list_match(). | |
761 | */ | |
88f1c947 DA |
762 | bool lcommunity_list_exact_match(struct lcommunity *lcom, |
763 | struct community_list *list) | |
f8463998 | 764 | { |
765 | struct community_entry *entry; | |
766 | ||
767 | for (entry = list->head; entry; entry = entry->next) { | |
768 | if (entry->any) | |
88f1c947 | 769 | return entry->direct == COMMUNITY_PERMIT; |
f8463998 | 770 | |
771 | if (entry->style == LARGE_COMMUNITY_LIST_STANDARD) { | |
772 | if (lcommunity_cmp(lcom, entry->u.com)) | |
88f1c947 | 773 | return entry->direct == COMMUNITY_PERMIT; |
f8463998 | 774 | } else if (entry->style == LARGE_COMMUNITY_LIST_EXPANDED) { |
775 | if (lcommunity_regexp_match(lcom, entry->reg)) | |
88f1c947 | 776 | return entry->direct == COMMUNITY_PERMIT; |
f8463998 | 777 | } |
778 | } | |
88f1c947 | 779 | return false; |
f8463998 | 780 | } |
781 | ||
88f1c947 | 782 | bool ecommunity_list_match(struct ecommunity *ecom, struct community_list *list) |
8708b74f | 783 | { |
d62a17ae | 784 | struct community_entry *entry; |
785 | ||
786 | for (entry = list->head; entry; entry = entry->next) { | |
787 | if (entry->any) | |
88f1c947 | 788 | return entry->direct == COMMUNITY_PERMIT; |
d62a17ae | 789 | |
790 | if (entry->style == EXTCOMMUNITY_LIST_STANDARD) { | |
791 | if (ecommunity_match(ecom, entry->u.ecom)) | |
88f1c947 | 792 | return entry->direct == COMMUNITY_PERMIT; |
d62a17ae | 793 | } else if (entry->style == EXTCOMMUNITY_LIST_EXPANDED) { |
794 | if (ecommunity_regexp_match(ecom, entry->reg)) | |
88f1c947 | 795 | return entry->direct == COMMUNITY_PERMIT; |
d62a17ae | 796 | } |
797 | } | |
88f1c947 | 798 | return false; |
718e3744 | 799 | } |
800 | ||
801 | /* Perform exact matching. In case of expanded community-list, do | |
802 | same thing as community_list_match(). */ | |
88f1c947 DA |
803 | bool community_list_exact_match(struct community *com, |
804 | struct community_list *list) | |
718e3744 | 805 | { |
d62a17ae | 806 | struct community_entry *entry; |
807 | ||
808 | for (entry = list->head; entry; entry = entry->next) { | |
809 | if (entry->any) | |
88f1c947 | 810 | return entry->direct == COMMUNITY_PERMIT; |
d62a17ae | 811 | |
812 | if (entry->style == COMMUNITY_LIST_STANDARD) { | |
813 | if (community_include(entry->u.com, COMMUNITY_INTERNET)) | |
88f1c947 | 814 | return entry->direct == COMMUNITY_PERMIT; |
d62a17ae | 815 | |
816 | if (community_cmp(com, entry->u.com)) | |
88f1c947 | 817 | return entry->direct == COMMUNITY_PERMIT; |
d62a17ae | 818 | } else if (entry->style == COMMUNITY_LIST_EXPANDED) { |
819 | if (community_regexp_match(com, entry->reg)) | |
88f1c947 | 820 | return entry->direct == COMMUNITY_PERMIT; |
d62a17ae | 821 | } |
822 | } | |
88f1c947 | 823 | return false; |
718e3744 | 824 | } |
825 | ||
8708b74f | 826 | /* Delete all permitted communities in the list from com. */ |
d62a17ae | 827 | struct community *community_list_match_delete(struct community *com, |
828 | struct community_list *list) | |
718e3744 | 829 | { |
d62a17ae | 830 | struct community_entry *entry; |
d7c0a89a QY |
831 | uint32_t val; |
832 | uint32_t com_index_to_delete[com->size]; | |
d62a17ae | 833 | int delete_index = 0; |
834 | int i; | |
835 | ||
836 | /* Loop over each community value and evaluate each against the | |
837 | * community-list. If we need to delete a community value add its index | |
ceead39c | 838 | * to com_index_to_delete. |
d62a17ae | 839 | */ |
840 | for (i = 0; i < com->size; i++) { | |
841 | val = community_val_get(com, i); | |
842 | ||
843 | for (entry = list->head; entry; entry = entry->next) { | |
844 | if (entry->any) { | |
845 | if (entry->direct == COMMUNITY_PERMIT) { | |
846 | com_index_to_delete[delete_index] = i; | |
847 | delete_index++; | |
848 | } | |
849 | break; | |
850 | } | |
851 | ||
852 | else if ((entry->style == COMMUNITY_LIST_STANDARD) | |
853 | && (community_include(entry->u.com, | |
854 | COMMUNITY_INTERNET) | |
855 | || community_include(entry->u.com, val))) { | |
856 | if (entry->direct == COMMUNITY_PERMIT) { | |
857 | com_index_to_delete[delete_index] = i; | |
858 | delete_index++; | |
859 | } | |
860 | break; | |
861 | } | |
862 | ||
863 | else if ((entry->style == COMMUNITY_LIST_EXPANDED) | |
864 | && community_regexp_include(entry->reg, com, | |
865 | i)) { | |
866 | if (entry->direct == COMMUNITY_PERMIT) { | |
867 | com_index_to_delete[delete_index] = i; | |
868 | delete_index++; | |
869 | } | |
870 | break; | |
871 | } | |
872 | } | |
873 | } | |
5cbea288 | 874 | |
d62a17ae | 875 | /* Delete all of the communities we flagged for deletion */ |
876 | for (i = delete_index - 1; i >= 0; i--) { | |
877 | val = community_val_get(com, com_index_to_delete[i]); | |
0743b61d | 878 | val = htonl(val); |
d62a17ae | 879 | community_del_val(com, &val); |
880 | } | |
5cbea288 | 881 | |
d62a17ae | 882 | return com; |
718e3744 | 883 | } |
884 | ||
885 | /* To avoid duplicated entry in the community-list, this function | |
886 | compares specified entry to existing entry. */ | |
88f1c947 DA |
887 | static bool community_list_dup_check(struct community_list *list, |
888 | struct community_entry *new) | |
718e3744 | 889 | { |
d62a17ae | 890 | struct community_entry *entry; |
891 | ||
892 | for (entry = list->head; entry; entry = entry->next) { | |
893 | if (entry->style != new->style) | |
894 | continue; | |
895 | ||
896 | if (entry->direct != new->direct) | |
897 | continue; | |
898 | ||
899 | if (entry->any != new->any) | |
900 | continue; | |
901 | ||
902 | if (entry->any) | |
88f1c947 | 903 | return true; |
d62a17ae | 904 | |
905 | switch (entry->style) { | |
906 | case COMMUNITY_LIST_STANDARD: | |
907 | if (community_cmp(entry->u.com, new->u.com)) | |
88f1c947 | 908 | return true; |
d62a17ae | 909 | break; |
910 | case LARGE_COMMUNITY_LIST_STANDARD: | |
911 | if (lcommunity_cmp(entry->u.lcom, new->u.lcom)) | |
88f1c947 | 912 | return true; |
d62a17ae | 913 | break; |
914 | case EXTCOMMUNITY_LIST_STANDARD: | |
915 | if (ecommunity_cmp(entry->u.ecom, new->u.ecom)) | |
88f1c947 | 916 | return true; |
d62a17ae | 917 | break; |
918 | case COMMUNITY_LIST_EXPANDED: | |
919 | case EXTCOMMUNITY_LIST_EXPANDED: | |
920 | case LARGE_COMMUNITY_LIST_EXPANDED: | |
921 | if (strcmp(entry->config, new->config) == 0) | |
88f1c947 | 922 | return true; |
d62a17ae | 923 | break; |
924 | default: | |
925 | break; | |
926 | } | |
927 | } | |
88f1c947 | 928 | return false; |
718e3744 | 929 | } |
6b0655a2 | 930 | |
718e3744 | 931 | /* Set community-list. */ |
d62a17ae | 932 | int community_list_set(struct community_list_handler *ch, const char *name, |
2f8cc0e5 | 933 | const char *str, const char *seq, int direct, int style) |
718e3744 | 934 | { |
d62a17ae | 935 | struct community_entry *entry = NULL; |
936 | struct community_list *list; | |
937 | struct community *com = NULL; | |
938 | regex_t *regex = NULL; | |
2f8cc0e5 DA |
939 | int64_t seqnum = COMMUNITY_SEQ_NUMBER_AUTO; |
940 | ||
941 | if (seq) | |
942 | seqnum = (int64_t)atol(seq); | |
d62a17ae | 943 | |
944 | /* Get community list. */ | |
945 | list = community_list_get(ch, name, COMMUNITY_LIST_MASTER); | |
946 | ||
947 | /* When community-list already has entry, new entry should have same | |
948 | style. If you want to have mixed style community-list, you can | |
949 | comment out this check. */ | |
950 | if (!community_list_empty_p(list)) { | |
951 | struct community_entry *first; | |
952 | ||
953 | first = list->head; | |
954 | ||
955 | if (style != first->style) { | |
956 | return (first->style == COMMUNITY_LIST_STANDARD | |
957 | ? COMMUNITY_LIST_ERR_STANDARD_CONFLICT | |
958 | : COMMUNITY_LIST_ERR_EXPANDED_CONFLICT); | |
959 | } | |
fee6e4e4 | 960 | } |
718e3744 | 961 | |
d62a17ae | 962 | if (str) { |
963 | if (style == COMMUNITY_LIST_STANDARD) | |
964 | com = community_str2com(str); | |
965 | else | |
966 | regex = bgp_regcomp(str); | |
8708b74f | 967 | |
d62a17ae | 968 | if (!com && !regex) |
969 | return COMMUNITY_LIST_ERR_MALFORMED_VAL; | |
970 | } | |
718e3744 | 971 | |
d62a17ae | 972 | entry = community_entry_new(); |
973 | entry->direct = direct; | |
974 | entry->style = style; | |
d3f6c580 | 975 | entry->any = (str ? false : true); |
d62a17ae | 976 | entry->u.com = com; |
977 | entry->reg = regex; | |
2f8cc0e5 | 978 | entry->seq = seqnum; |
d62a17ae | 979 | entry->config = |
980 | (regex ? XSTRDUP(MTYPE_COMMUNITY_LIST_CONFIG, str) : NULL); | |
981 | ||
982 | /* Do not put duplicated community entry. */ | |
983 | if (community_list_dup_check(list, entry)) | |
984 | community_entry_free(entry); | |
985 | else { | |
2f8cc0e5 DA |
986 | community_list_entry_add(list, entry, ch, |
987 | COMMUNITY_LIST_MASTER); | |
d62a17ae | 988 | route_map_notify_dependencies(name, RMAP_EVENT_CLIST_ADDED); |
989 | } | |
718e3744 | 990 | |
d62a17ae | 991 | return 0; |
718e3744 | 992 | } |
993 | ||
813d4307 | 994 | /* Unset community-list */ |
d62a17ae | 995 | int community_list_unset(struct community_list_handler *ch, const char *name, |
2f8cc0e5 DA |
996 | const char *str, const char *seq, int direct, |
997 | int style) | |
718e3744 | 998 | { |
3571a6a2 | 999 | struct community_list_master *cm = NULL; |
d62a17ae | 1000 | struct community_entry *entry = NULL; |
1001 | struct community_list *list; | |
1002 | struct community *com = NULL; | |
1003 | ||
1004 | /* Lookup community list. */ | |
e237b0d2 | 1005 | list = community_list_lookup(ch, name, 0, COMMUNITY_LIST_MASTER); |
d62a17ae | 1006 | if (list == NULL) |
1007 | return COMMUNITY_LIST_ERR_CANT_FIND_LIST; | |
1008 | ||
3571a6a2 | 1009 | cm = community_list_master_lookup(ch, COMMUNITY_LIST_MASTER); |
d62a17ae | 1010 | /* Delete all of entry belongs to this community-list. */ |
7298a8e1 | 1011 | if (!str) { |
3571a6a2 | 1012 | community_list_delete(cm, list); |
d62a17ae | 1013 | route_map_notify_dependencies(name, RMAP_EVENT_CLIST_DELETED); |
1014 | return 0; | |
1015 | } | |
718e3744 | 1016 | |
7298a8e1 QY |
1017 | if (style == COMMUNITY_LIST_STANDARD) |
1018 | com = community_str2com(str); | |
718e3744 | 1019 | |
d62a17ae | 1020 | if (com) { |
1021 | entry = community_list_entry_lookup(list, com, direct); | |
3c1f53de | 1022 | community_free(&com); |
d62a17ae | 1023 | } else |
1024 | entry = community_list_entry_lookup(list, str, direct); | |
fee6e4e4 | 1025 | |
d62a17ae | 1026 | if (!entry) |
1027 | return COMMUNITY_LIST_ERR_CANT_FIND_LIST; | |
718e3744 | 1028 | |
3571a6a2 | 1029 | community_list_entry_delete(cm, list, entry); |
d62a17ae | 1030 | route_map_notify_dependencies(name, RMAP_EVENT_CLIST_DELETED); |
718e3744 | 1031 | |
d62a17ae | 1032 | return 0; |
718e3744 | 1033 | } |
1034 | ||
57d187bc | 1035 | /* Delete all permitted large communities in the list from com. */ |
d62a17ae | 1036 | struct lcommunity *lcommunity_list_match_delete(struct lcommunity *lcom, |
1037 | struct community_list *list) | |
57d187bc | 1038 | { |
d62a17ae | 1039 | struct community_entry *entry; |
d7c0a89a QY |
1040 | uint32_t com_index_to_delete[lcom->size]; |
1041 | uint8_t *ptr; | |
d62a17ae | 1042 | int delete_index = 0; |
1043 | int i; | |
1044 | ||
1045 | /* Loop over each lcommunity value and evaluate each against the | |
1046 | * community-list. If we need to delete a community value add its index | |
ceead39c | 1047 | * to com_index_to_delete. |
d62a17ae | 1048 | */ |
d62a17ae | 1049 | for (i = 0; i < lcom->size; i++) { |
534fc195 | 1050 | ptr = lcom->val + (i * LCOMMUNITY_SIZE); |
d62a17ae | 1051 | for (entry = list->head; entry; entry = entry->next) { |
1052 | if (entry->any) { | |
1053 | if (entry->direct == COMMUNITY_PERMIT) { | |
1054 | com_index_to_delete[delete_index] = i; | |
1055 | delete_index++; | |
1056 | } | |
1057 | break; | |
1058 | } | |
1059 | ||
1060 | else if ((entry->style == LARGE_COMMUNITY_LIST_STANDARD) | |
1061 | && lcommunity_include(entry->u.lcom, ptr)) { | |
1062 | if (entry->direct == COMMUNITY_PERMIT) { | |
1063 | com_index_to_delete[delete_index] = i; | |
1064 | delete_index++; | |
1065 | } | |
1066 | break; | |
1067 | } | |
1068 | ||
cde8d696 | 1069 | else if ((entry->style == LARGE_COMMUNITY_LIST_EXPANDED) |
d62a17ae | 1070 | && lcommunity_regexp_include(entry->reg, lcom, |
1071 | i)) { | |
1072 | if (entry->direct == COMMUNITY_PERMIT) { | |
1073 | com_index_to_delete[delete_index] = i; | |
1074 | delete_index++; | |
1075 | } | |
1076 | break; | |
1077 | } | |
1078 | } | |
1079 | } | |
57d187bc | 1080 | |
d62a17ae | 1081 | /* Delete all of the communities we flagged for deletion */ |
d62a17ae | 1082 | for (i = delete_index - 1; i >= 0; i--) { |
0a7dce9b | 1083 | ptr = lcom->val + (com_index_to_delete[i] * LCOMMUNITY_SIZE); |
d62a17ae | 1084 | lcommunity_del_val(lcom, ptr); |
1085 | } | |
57d187bc | 1086 | |
d62a17ae | 1087 | return lcom; |
57d187bc JS |
1088 | } |
1089 | ||
5bd66e2d | 1090 | /* Helper to check if every octet do not exceed UINT_MAX */ |
88f1c947 | 1091 | static bool lcommunity_list_valid(const char *community) |
5bd66e2d | 1092 | { |
bc2c9ae6 DA |
1093 | int octets; |
1094 | char **splits, **communities; | |
1095 | int num, num_communities; | |
5bd66e2d | 1096 | |
bc2c9ae6 | 1097 | frrstr_split(community, " ", &communities, &num_communities); |
5bd66e2d | 1098 | |
bc2c9ae6 DA |
1099 | for (int j = 0; j < num_communities; j++) { |
1100 | octets = 0; | |
1101 | frrstr_split(communities[j], ":", &splits, &num); | |
1102 | ||
1103 | for (int i = 0; i < num; i++) { | |
1104 | if (strtoul(splits[i], NULL, 10) > UINT_MAX) | |
1105 | return false; | |
5bd66e2d | 1106 | |
bc2c9ae6 DA |
1107 | if (strlen(splits[i]) == 0) |
1108 | return false; | |
1109 | ||
1110 | octets++; | |
1111 | XFREE(MTYPE_TMP, splits[i]); | |
1112 | } | |
1113 | XFREE(MTYPE_TMP, splits); | |
1114 | ||
1115 | if (octets < 3) | |
88f1c947 | 1116 | return false; |
5bd66e2d | 1117 | |
bc2c9ae6 | 1118 | XFREE(MTYPE_TMP, communities[j]); |
5bd66e2d | 1119 | } |
bc2c9ae6 | 1120 | XFREE(MTYPE_TMP, communities); |
5bd66e2d | 1121 | |
88f1c947 | 1122 | return true; |
5bd66e2d DA |
1123 | } |
1124 | ||
57d187bc | 1125 | /* Set lcommunity-list. */ |
d62a17ae | 1126 | int lcommunity_list_set(struct community_list_handler *ch, const char *name, |
2f8cc0e5 | 1127 | const char *str, const char *seq, int direct, int style) |
57d187bc | 1128 | { |
d62a17ae | 1129 | struct community_entry *entry = NULL; |
1130 | struct community_list *list; | |
1131 | struct lcommunity *lcom = NULL; | |
1132 | regex_t *regex = NULL; | |
2f8cc0e5 DA |
1133 | int64_t seqnum = COMMUNITY_SEQ_NUMBER_AUTO; |
1134 | ||
1135 | if (seq) | |
1136 | seqnum = (int64_t)atol(seq); | |
d62a17ae | 1137 | |
1138 | /* Get community list. */ | |
1139 | list = community_list_get(ch, name, LARGE_COMMUNITY_LIST_MASTER); | |
1140 | ||
1141 | /* When community-list already has entry, new entry should have same | |
1142 | style. If you want to have mixed style community-list, you can | |
1143 | comment out this check. */ | |
1144 | if (!community_list_empty_p(list)) { | |
1145 | struct community_entry *first; | |
1146 | ||
1147 | first = list->head; | |
1148 | ||
1149 | if (style != first->style) { | |
1150 | return (first->style == COMMUNITY_LIST_STANDARD | |
1151 | ? COMMUNITY_LIST_ERR_STANDARD_CONFLICT | |
1152 | : COMMUNITY_LIST_ERR_EXPANDED_CONFLICT); | |
1153 | } | |
1154 | } | |
57d187bc | 1155 | |
d62a17ae | 1156 | if (str) { |
5bd66e2d DA |
1157 | if (!lcommunity_list_valid(str)) |
1158 | return COMMUNITY_LIST_ERR_MALFORMED_VAL; | |
1159 | ||
d62a17ae | 1160 | if (style == LARGE_COMMUNITY_LIST_STANDARD) |
1161 | lcom = lcommunity_str2com(str); | |
1162 | else | |
1163 | regex = bgp_regcomp(str); | |
57d187bc | 1164 | |
d62a17ae | 1165 | if (!lcom && !regex) |
1166 | return COMMUNITY_LIST_ERR_MALFORMED_VAL; | |
1167 | } | |
57d187bc | 1168 | |
d62a17ae | 1169 | entry = community_entry_new(); |
1170 | entry->direct = direct; | |
1171 | entry->style = style; | |
d3f6c580 | 1172 | entry->any = (str ? false : true); |
d62a17ae | 1173 | entry->u.lcom = lcom; |
1174 | entry->reg = regex; | |
2f8cc0e5 | 1175 | entry->seq = seqnum; |
8d9b8ed9 PM |
1176 | entry->config = |
1177 | (regex ? XSTRDUP(MTYPE_COMMUNITY_LIST_CONFIG, str) : NULL); | |
d62a17ae | 1178 | |
1179 | /* Do not put duplicated community entry. */ | |
1180 | if (community_list_dup_check(list, entry)) | |
1181 | community_entry_free(entry); | |
35f6f850 | 1182 | else { |
2f8cc0e5 DA |
1183 | community_list_entry_add(list, entry, ch, |
1184 | LARGE_COMMUNITY_LIST_MASTER); | |
35f6f850 | 1185 | route_map_notify_dependencies(name, RMAP_EVENT_LLIST_ADDED); |
1186 | } | |
d62a17ae | 1187 | |
1188 | return 0; | |
57d187bc JS |
1189 | } |
1190 | ||
1191 | /* Unset community-list. When str is NULL, delete all of | |
1192 | community-list entry belongs to the specified name. */ | |
d62a17ae | 1193 | int lcommunity_list_unset(struct community_list_handler *ch, const char *name, |
2f8cc0e5 DA |
1194 | const char *str, const char *seq, int direct, |
1195 | int style) | |
57d187bc | 1196 | { |
3571a6a2 | 1197 | struct community_list_master *cm = NULL; |
d62a17ae | 1198 | struct community_entry *entry = NULL; |
1199 | struct community_list *list; | |
1200 | struct lcommunity *lcom = NULL; | |
1201 | regex_t *regex = NULL; | |
1202 | ||
1203 | /* Lookup community list. */ | |
e237b0d2 | 1204 | list = community_list_lookup(ch, name, 0, LARGE_COMMUNITY_LIST_MASTER); |
d62a17ae | 1205 | if (list == NULL) |
1206 | return COMMUNITY_LIST_ERR_CANT_FIND_LIST; | |
1207 | ||
3571a6a2 | 1208 | cm = community_list_master_lookup(ch, LARGE_COMMUNITY_LIST_MASTER); |
d62a17ae | 1209 | /* Delete all of entry belongs to this community-list. */ |
1210 | if (!str) { | |
3571a6a2 | 1211 | community_list_delete(cm, list); |
35f6f850 | 1212 | route_map_notify_dependencies(name, RMAP_EVENT_LLIST_DELETED); |
d62a17ae | 1213 | return 0; |
1214 | } | |
57d187bc | 1215 | |
d62a17ae | 1216 | if (style == LARGE_COMMUNITY_LIST_STANDARD) |
1217 | lcom = lcommunity_str2com(str); | |
1218 | else | |
1219 | regex = bgp_regcomp(str); | |
57d187bc | 1220 | |
d62a17ae | 1221 | if (!lcom && !regex) |
1222 | return COMMUNITY_LIST_ERR_MALFORMED_VAL; | |
57d187bc | 1223 | |
d62a17ae | 1224 | if (lcom) |
1225 | entry = community_list_entry_lookup(list, lcom, direct); | |
1226 | else | |
1227 | entry = community_list_entry_lookup(list, str, direct); | |
57d187bc | 1228 | |
d62a17ae | 1229 | if (lcom) |
1230 | lcommunity_free(&lcom); | |
1231 | if (regex) | |
1232 | bgp_regex_free(regex); | |
57d187bc | 1233 | |
d62a17ae | 1234 | if (!entry) |
1235 | return COMMUNITY_LIST_ERR_CANT_FIND_LIST; | |
57d187bc | 1236 | |
3571a6a2 | 1237 | community_list_entry_delete(cm, list, entry); |
35f6f850 | 1238 | route_map_notify_dependencies(name, RMAP_EVENT_LLIST_DELETED); |
57d187bc | 1239 | |
d62a17ae | 1240 | return 0; |
57d187bc JS |
1241 | } |
1242 | ||
718e3744 | 1243 | /* Set extcommunity-list. */ |
d62a17ae | 1244 | int extcommunity_list_set(struct community_list_handler *ch, const char *name, |
2f8cc0e5 DA |
1245 | const char *str, const char *seq, int direct, |
1246 | int style) | |
718e3744 | 1247 | { |
d62a17ae | 1248 | struct community_entry *entry = NULL; |
1249 | struct community_list *list; | |
1250 | struct ecommunity *ecom = NULL; | |
1251 | regex_t *regex = NULL; | |
2f8cc0e5 DA |
1252 | int64_t seqnum = COMMUNITY_SEQ_NUMBER_AUTO; |
1253 | ||
1254 | if (seq) | |
1255 | seqnum = (int64_t)atol(seq); | |
718e3744 | 1256 | |
fa301630 | 1257 | if (str == NULL) |
1258 | return COMMUNITY_LIST_ERR_MALFORMED_VAL; | |
1259 | ||
d62a17ae | 1260 | /* Get community list. */ |
1261 | list = community_list_get(ch, name, EXTCOMMUNITY_LIST_MASTER); | |
718e3744 | 1262 | |
d62a17ae | 1263 | /* When community-list already has entry, new entry should have same |
1264 | style. If you want to have mixed style community-list, you can | |
1265 | comment out this check. */ | |
1266 | if (!community_list_empty_p(list)) { | |
1267 | struct community_entry *first; | |
718e3744 | 1268 | |
d62a17ae | 1269 | first = list->head; |
718e3744 | 1270 | |
d62a17ae | 1271 | if (style != first->style) { |
1272 | return (first->style == EXTCOMMUNITY_LIST_STANDARD | |
1273 | ? COMMUNITY_LIST_ERR_STANDARD_CONFLICT | |
1274 | : COMMUNITY_LIST_ERR_EXPANDED_CONFLICT); | |
1275 | } | |
fee6e4e4 | 1276 | } |
718e3744 | 1277 | |
d62a17ae | 1278 | if (style == EXTCOMMUNITY_LIST_STANDARD) |
1279 | ecom = ecommunity_str2com(str, 0, 1); | |
1280 | else | |
1281 | regex = bgp_regcomp(str); | |
1282 | ||
1283 | if (!ecom && !regex) | |
1284 | return COMMUNITY_LIST_ERR_MALFORMED_VAL; | |
1285 | ||
1286 | if (ecom) | |
1287 | ecom->str = | |
1288 | ecommunity_ecom2str(ecom, ECOMMUNITY_FORMAT_DISPLAY, 0); | |
1289 | ||
1290 | entry = community_entry_new(); | |
1291 | entry->direct = direct; | |
1292 | entry->style = style; | |
d3f6c580 | 1293 | entry->any = false; |
d62a17ae | 1294 | if (ecom) |
1295 | entry->config = ecommunity_ecom2str( | |
1296 | ecom, ECOMMUNITY_FORMAT_COMMUNITY_LIST, 0); | |
1297 | else if (regex) | |
1298 | entry->config = XSTRDUP(MTYPE_COMMUNITY_LIST_CONFIG, str); | |
1299 | ||
1300 | entry->u.ecom = ecom; | |
1301 | entry->reg = regex; | |
2f8cc0e5 | 1302 | entry->seq = seqnum; |
d62a17ae | 1303 | |
1304 | /* Do not put duplicated community entry. */ | |
1305 | if (community_list_dup_check(list, entry)) | |
1306 | community_entry_free(entry); | |
1307 | else { | |
2f8cc0e5 DA |
1308 | community_list_entry_add(list, entry, ch, |
1309 | EXTCOMMUNITY_LIST_MASTER); | |
d62a17ae | 1310 | route_map_notify_dependencies(name, RMAP_EVENT_ECLIST_ADDED); |
1311 | } | |
718e3744 | 1312 | |
d62a17ae | 1313 | return 0; |
718e3744 | 1314 | } |
1315 | ||
7298a8e1 QY |
1316 | /* Unset extcommunity-list. |
1317 | * | |
1318 | * When str is NULL, delete all extcommunity-list entries belonging to the | |
1319 | * specified name. | |
1320 | */ | |
d62a17ae | 1321 | int extcommunity_list_unset(struct community_list_handler *ch, const char *name, |
2f8cc0e5 DA |
1322 | const char *str, const char *seq, int direct, |
1323 | int style) | |
718e3744 | 1324 | { |
3571a6a2 | 1325 | struct community_list_master *cm = NULL; |
d62a17ae | 1326 | struct community_entry *entry = NULL; |
1327 | struct community_list *list; | |
1328 | struct ecommunity *ecom = NULL; | |
1329 | ||
1330 | /* Lookup extcommunity list. */ | |
e237b0d2 | 1331 | list = community_list_lookup(ch, name, 0, EXTCOMMUNITY_LIST_MASTER); |
d62a17ae | 1332 | if (list == NULL) |
1333 | return COMMUNITY_LIST_ERR_CANT_FIND_LIST; | |
1334 | ||
3571a6a2 | 1335 | cm = community_list_master_lookup(ch, EXTCOMMUNITY_LIST_MASTER); |
d62a17ae | 1336 | /* Delete all of entry belongs to this extcommunity-list. */ |
7298a8e1 | 1337 | if (!str) { |
3571a6a2 | 1338 | community_list_delete(cm, list); |
d62a17ae | 1339 | route_map_notify_dependencies(name, RMAP_EVENT_ECLIST_DELETED); |
1340 | return 0; | |
1341 | } | |
718e3744 | 1342 | |
7298a8e1 QY |
1343 | if (style == EXTCOMMUNITY_LIST_STANDARD) |
1344 | ecom = ecommunity_str2com(str, 0, 1); | |
718e3744 | 1345 | |
d62a17ae | 1346 | if (ecom) { |
1347 | entry = community_list_entry_lookup(list, ecom, direct); | |
1348 | ecommunity_free(&ecom); | |
1349 | } else | |
1350 | entry = community_list_entry_lookup(list, str, direct); | |
fee6e4e4 | 1351 | |
d62a17ae | 1352 | if (!entry) |
1353 | return COMMUNITY_LIST_ERR_CANT_FIND_LIST; | |
718e3744 | 1354 | |
3571a6a2 | 1355 | community_list_entry_delete(cm, list, entry); |
d62a17ae | 1356 | route_map_notify_dependencies(name, RMAP_EVENT_ECLIST_DELETED); |
718e3744 | 1357 | |
d62a17ae | 1358 | return 0; |
718e3744 | 1359 | } |
1360 | ||
1361 | /* Initializa community-list. Return community-list handler. */ | |
d62a17ae | 1362 | struct community_list_handler *community_list_init(void) |
718e3744 | 1363 | { |
d62a17ae | 1364 | struct community_list_handler *ch; |
1365 | ch = XCALLOC(MTYPE_COMMUNITY_LIST_HANDLER, | |
1366 | sizeof(struct community_list_handler)); | |
3571a6a2 DS |
1367 | |
1368 | ch->community_list.hash = | |
1369 | hash_create_size(4, bgp_clist_hash_key_community_list, | |
1370 | bgp_clist_hash_cmp_community_list, | |
1371 | "Community List Number Quick Lookup"); | |
1372 | ||
1373 | ch->extcommunity_list.hash = | |
1374 | hash_create_size(4, bgp_clist_hash_key_community_list, | |
1375 | bgp_clist_hash_cmp_community_list, | |
1376 | "Extended Community List Quick Lookup"); | |
1377 | ||
1378 | ch->lcommunity_list.hash = | |
1379 | hash_create_size(4, bgp_clist_hash_key_community_list, | |
1380 | bgp_clist_hash_cmp_community_list, | |
1381 | "Large Community List Quick Lookup"); | |
1382 | ||
d62a17ae | 1383 | return ch; |
718e3744 | 1384 | } |
1385 | ||
1386 | /* Terminate community-list. */ | |
d62a17ae | 1387 | void community_list_terminate(struct community_list_handler *ch) |
718e3744 | 1388 | { |
d62a17ae | 1389 | struct community_list_master *cm; |
1390 | struct community_list *list; | |
1391 | ||
1392 | cm = &ch->community_list; | |
1393 | while ((list = cm->num.head) != NULL) | |
3571a6a2 | 1394 | community_list_delete(cm, list); |
d62a17ae | 1395 | while ((list = cm->str.head) != NULL) |
3571a6a2 DS |
1396 | community_list_delete(cm, list); |
1397 | hash_free(cm->hash); | |
d62a17ae | 1398 | |
1399 | cm = &ch->lcommunity_list; | |
1400 | while ((list = cm->num.head) != NULL) | |
3571a6a2 | 1401 | community_list_delete(cm, list); |
d62a17ae | 1402 | while ((list = cm->str.head) != NULL) |
3571a6a2 DS |
1403 | community_list_delete(cm, list); |
1404 | hash_free(cm->hash); | |
d62a17ae | 1405 | |
1406 | cm = &ch->extcommunity_list; | |
1407 | while ((list = cm->num.head) != NULL) | |
3571a6a2 | 1408 | community_list_delete(cm, list); |
d62a17ae | 1409 | while ((list = cm->str.head) != NULL) |
3571a6a2 DS |
1410 | community_list_delete(cm, list); |
1411 | hash_free(cm->hash); | |
d62a17ae | 1412 | |
1413 | XFREE(MTYPE_COMMUNITY_LIST_HANDLER, ch); | |
718e3744 | 1414 | } |