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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 | ||
47 | maxseq = newseq = 0; | |
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 | ||
d62a17ae | 314 | static int community_list_empty_p(struct community_list *list) |
718e3744 | 315 | { |
d62a17ae | 316 | return (list->head == NULL && list->tail == NULL) ? 1 : 0; |
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. */ |
d62a17ae | 500 | static int 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 | |
d62a17ae | 517 | if (rv == 0) |
518 | return 1; | |
5cbea288 | 519 | |
d62a17ae | 520 | /* No match. */ |
521 | return 0; | |
5cbea288 DS |
522 | } |
523 | ||
718e3744 | 524 | /* Internal function to perform regular expression match for community |
525 | attribute. */ | |
d62a17ae | 526 | static int community_regexp_match(struct community *com, regex_t *reg) |
718e3744 | 527 | { |
d62a17ae | 528 | const char *str; |
718e3744 | 529 | |
d62a17ae | 530 | /* When there is no communities attribute it is treated as empty |
531 | string. */ | |
532 | if (com == NULL || com->size == 0) | |
533 | str = ""; | |
534 | else | |
a69ea8ae | 535 | str = community_str(com, false); |
718e3744 | 536 | |
d62a17ae | 537 | /* Regular expression match. */ |
538 | if (regexec(reg, str, 0, NULL, 0) == 0) | |
539 | return 1; | |
718e3744 | 540 | |
d62a17ae | 541 | /* No match. */ |
542 | return 0; | |
718e3744 | 543 | } |
544 | ||
d62a17ae | 545 | static char *lcommunity_str_get(struct lcommunity *lcom, int i) |
57d187bc | 546 | { |
d62a17ae | 547 | struct lcommunity_val lcomval; |
d7c0a89a QY |
548 | uint32_t globaladmin; |
549 | uint32_t localdata1; | |
550 | uint32_t localdata2; | |
d62a17ae | 551 | char *str; |
d7c0a89a | 552 | uint8_t *ptr; |
d62a17ae | 553 | char *pnt; |
554 | ||
ff9104a2 | 555 | ptr = lcom->val + (i * LCOMMUNITY_SIZE); |
d62a17ae | 556 | |
557 | memcpy(&lcomval, ptr, LCOMMUNITY_SIZE); | |
558 | ||
559 | /* Allocate memory. 48 bytes taken off bgp_lcommunity.c */ | |
560 | str = pnt = XMALLOC(MTYPE_LCOMMUNITY_STR, 48); | |
561 | ||
d7c0a89a | 562 | ptr = (uint8_t *)lcomval.val; |
937652c6 DL |
563 | ptr = ptr_get_be32(ptr, &globaladmin); |
564 | ptr = ptr_get_be32(ptr, &localdata1); | |
565 | ptr = ptr_get_be32(ptr, &localdata2); | |
566 | (void)ptr; /* consume value */ | |
d62a17ae | 567 | |
568 | sprintf(pnt, "%u:%u:%u", globaladmin, localdata1, localdata2); | |
569 | pnt += strlen(pnt); | |
570 | *pnt = '\0'; | |
571 | ||
572 | return str; | |
57d187bc JS |
573 | } |
574 | ||
575 | /* Internal function to perform regular expression match for | |
2acb4ac2 | 576 | * a single community. */ |
d62a17ae | 577 | static int lcommunity_regexp_include(regex_t *reg, struct lcommunity *lcom, |
578 | int i) | |
57d187bc | 579 | { |
d62a17ae | 580 | char *str; |
581 | ||
582 | /* When there is no communities attribute it is treated as empty string. | |
583 | */ | |
584 | if (lcom == NULL || lcom->size == 0) | |
585 | str = XSTRDUP(MTYPE_LCOMMUNITY_STR, ""); | |
586 | else | |
587 | str = lcommunity_str_get(lcom, i); | |
588 | ||
589 | /* Regular expression match. */ | |
590 | if (regexec(reg, str, 0, NULL, 0) == 0) { | |
591 | XFREE(MTYPE_LCOMMUNITY_STR, str); | |
592 | return 1; | |
593 | } | |
57d187bc | 594 | |
d62a17ae | 595 | XFREE(MTYPE_LCOMMUNITY_STR, str); |
596 | /* No match. */ | |
597 | return 0; | |
57d187bc JS |
598 | } |
599 | ||
d62a17ae | 600 | static int lcommunity_regexp_match(struct lcommunity *com, regex_t *reg) |
57d187bc | 601 | { |
d62a17ae | 602 | const char *str; |
57d187bc | 603 | |
d62a17ae | 604 | /* When there is no communities attribute it is treated as empty |
605 | string. */ | |
606 | if (com == NULL || com->size == 0) | |
607 | str = ""; | |
608 | else | |
8d9b8ed9 | 609 | str = lcommunity_str(com, false); |
57d187bc | 610 | |
d62a17ae | 611 | /* Regular expression match. */ |
612 | if (regexec(reg, str, 0, NULL, 0) == 0) | |
613 | return 1; | |
57d187bc | 614 | |
d62a17ae | 615 | /* No match. */ |
616 | return 0; | |
57d187bc JS |
617 | } |
618 | ||
619 | ||
d62a17ae | 620 | static int ecommunity_regexp_match(struct ecommunity *ecom, regex_t *reg) |
8708b74f | 621 | { |
d62a17ae | 622 | const char *str; |
8708b74f | 623 | |
d62a17ae | 624 | /* When there is no communities attribute it is treated as empty |
625 | string. */ | |
626 | if (ecom == NULL || ecom->size == 0) | |
627 | str = ""; | |
628 | else | |
629 | str = ecommunity_str(ecom); | |
8708b74f | 630 | |
d62a17ae | 631 | /* Regular expression match. */ |
632 | if (regexec(reg, str, 0, NULL, 0) == 0) | |
633 | return 1; | |
8708b74f | 634 | |
d62a17ae | 635 | /* No match. */ |
636 | return 0; | |
8708b74f | 637 | } |
638 | ||
ffd0c037 | 639 | #if 0 |
718e3744 | 640 | /* Delete community attribute using regular expression match. Return |
641 | modified communites attribute. */ | |
642 | static struct community * | |
8708b74f | 643 | community_regexp_delete (struct community *com, regex_t * reg) |
718e3744 | 644 | { |
aa861c10 C |
645 | int i; |
646 | uint32_t comval; | |
647 | /* Maximum is "65535:65535" + '\0'. */ | |
648 | char c[12]; | |
649 | const char *str; | |
650 | ||
651 | if (!com) | |
652 | return NULL; | |
653 | ||
654 | i = 0; | |
655 | while (i < com->size) | |
656 | { | |
657 | memcpy (&comval, com_nthval (com, i), sizeof (uint32_t)); | |
658 | comval = ntohl (comval); | |
659 | ||
660 | switch (comval) { | |
661 | case COMMUNITY_INTERNET: | |
662 | str = "internet"; | |
663 | break; | |
664 | case COMMUNITY_ACCEPT_OWN: | |
665 | str = "accept-own"; | |
666 | break; | |
667 | case COMMUNITY_ROUTE_FILTER_TRANSLATED_v4: | |
668 | str = "route-filter-translated-v4"; | |
669 | break; | |
670 | case COMMUNITY_ROUTE_FILTER_v4: | |
671 | str = "route-filter-v4"; | |
672 | break; | |
673 | case COMMUNITY_ROUTE_FILTER_TRANSLATED_v6: | |
674 | str = "route-filter-translated-v6"; | |
675 | break; | |
676 | case COMMUNITY_ROUTE_FILTER_v6: | |
677 | str = "route-filter-v6"; | |
678 | break; | |
679 | case COMMUNITY_LLGR_STALE: | |
680 | str = "llgr-stale"; | |
681 | break; | |
682 | case COMMUNITY_NO_LLGR: | |
683 | str = "no-llgr"; | |
684 | break; | |
685 | case COMMUNITY_ACCEPT_OWN_NEXTHOP: | |
686 | str = "accept-own-nexthop"; | |
687 | break; | |
688 | case COMMUNITY_BLACKHOLE: | |
689 | str = "blackhole"; | |
690 | break; | |
691 | case COMMUNITY_NO_EXPORT: | |
692 | str = "no-export"; | |
693 | break; | |
694 | case COMMUNITY_NO_ADVERTISE: | |
695 | str = "no-advertise"; | |
696 | break; | |
697 | case COMMUNITY_LOCAL_AS: | |
698 | str = "local-AS"; | |
699 | break; | |
700 | case COMMUNITY_NO_PEER: | |
701 | str = "no-peer"; | |
702 | break; | |
703 | default: | |
704 | sprintf (c, "%d:%d", (comval >> 16) & 0xFFFF, | |
705 | comval & 0xFFFF); | |
706 | str = c; | |
707 | break; | |
708 | } | |
709 | ||
710 | if (regexec (reg, str, 0, NULL, 0) == 0) | |
711 | community_del_val (com, com_nthval (com, i)); | |
712 | else | |
713 | i++; | |
714 | } | |
715 | return com; | |
718e3744 | 716 | } |
ffd0c037 | 717 | #endif |
718e3744 | 718 | |
719 | /* When given community attribute matches to the community-list return | |
720 | 1 else return 0. */ | |
d62a17ae | 721 | int community_list_match(struct community *com, struct community_list *list) |
718e3744 | 722 | { |
d62a17ae | 723 | struct community_entry *entry; |
724 | ||
725 | for (entry = list->head; entry; entry = entry->next) { | |
726 | if (entry->any) | |
727 | return entry->direct == COMMUNITY_PERMIT ? 1 : 0; | |
728 | ||
729 | if (entry->style == COMMUNITY_LIST_STANDARD) { | |
730 | if (community_include(entry->u.com, COMMUNITY_INTERNET)) | |
731 | return entry->direct == COMMUNITY_PERMIT ? 1 | |
732 | : 0; | |
733 | ||
734 | if (community_match(com, entry->u.com)) | |
735 | return entry->direct == COMMUNITY_PERMIT ? 1 | |
736 | : 0; | |
737 | } else if (entry->style == COMMUNITY_LIST_EXPANDED) { | |
738 | if (community_regexp_match(com, entry->reg)) | |
739 | return entry->direct == COMMUNITY_PERMIT ? 1 | |
740 | : 0; | |
741 | } | |
742 | } | |
743 | return 0; | |
8708b74f | 744 | } |
745 | ||
d62a17ae | 746 | int lcommunity_list_match(struct lcommunity *lcom, struct community_list *list) |
57d187bc | 747 | { |
d62a17ae | 748 | struct community_entry *entry; |
749 | ||
750 | for (entry = list->head; entry; entry = entry->next) { | |
751 | if (entry->any) | |
752 | return entry->direct == COMMUNITY_PERMIT ? 1 : 0; | |
753 | ||
754 | if (entry->style == LARGE_COMMUNITY_LIST_STANDARD) { | |
755 | if (lcommunity_match(lcom, entry->u.lcom)) | |
756 | return entry->direct == COMMUNITY_PERMIT ? 1 | |
757 | : 0; | |
758 | } else if (entry->style == LARGE_COMMUNITY_LIST_EXPANDED) { | |
759 | if (lcommunity_regexp_match(lcom, entry->reg)) | |
760 | return entry->direct == COMMUNITY_PERMIT ? 1 | |
761 | : 0; | |
762 | } | |
763 | } | |
764 | return 0; | |
57d187bc JS |
765 | } |
766 | ||
f8463998 | 767 | |
768 | /* Perform exact matching. In case of expanded large-community-list, do | |
769 | * same thing as lcommunity_list_match(). | |
770 | */ | |
771 | int lcommunity_list_exact_match(struct lcommunity *lcom, | |
772 | struct community_list *list) | |
773 | { | |
774 | struct community_entry *entry; | |
775 | ||
776 | for (entry = list->head; entry; entry = entry->next) { | |
777 | if (entry->any) | |
778 | return entry->direct == COMMUNITY_PERMIT ? 1 : 0; | |
779 | ||
780 | if (entry->style == LARGE_COMMUNITY_LIST_STANDARD) { | |
781 | if (lcommunity_cmp(lcom, entry->u.com)) | |
782 | return entry->direct == COMMUNITY_PERMIT ? 1 | |
783 | : 0; | |
784 | } else if (entry->style == LARGE_COMMUNITY_LIST_EXPANDED) { | |
785 | if (lcommunity_regexp_match(lcom, entry->reg)) | |
786 | return entry->direct == COMMUNITY_PERMIT ? 1 | |
787 | : 0; | |
788 | } | |
789 | } | |
790 | return 0; | |
791 | } | |
792 | ||
d62a17ae | 793 | int ecommunity_list_match(struct ecommunity *ecom, struct community_list *list) |
8708b74f | 794 | { |
d62a17ae | 795 | struct community_entry *entry; |
796 | ||
797 | for (entry = list->head; entry; entry = entry->next) { | |
798 | if (entry->any) | |
799 | return entry->direct == COMMUNITY_PERMIT ? 1 : 0; | |
800 | ||
801 | if (entry->style == EXTCOMMUNITY_LIST_STANDARD) { | |
802 | if (ecommunity_match(ecom, entry->u.ecom)) | |
803 | return entry->direct == COMMUNITY_PERMIT ? 1 | |
804 | : 0; | |
805 | } else if (entry->style == EXTCOMMUNITY_LIST_EXPANDED) { | |
806 | if (ecommunity_regexp_match(ecom, entry->reg)) | |
807 | return entry->direct == COMMUNITY_PERMIT ? 1 | |
808 | : 0; | |
809 | } | |
810 | } | |
811 | return 0; | |
718e3744 | 812 | } |
813 | ||
814 | /* Perform exact matching. In case of expanded community-list, do | |
815 | same thing as community_list_match(). */ | |
d62a17ae | 816 | int community_list_exact_match(struct community *com, |
817 | struct community_list *list) | |
718e3744 | 818 | { |
d62a17ae | 819 | struct community_entry *entry; |
820 | ||
821 | for (entry = list->head; entry; entry = entry->next) { | |
822 | if (entry->any) | |
823 | return entry->direct == COMMUNITY_PERMIT ? 1 : 0; | |
824 | ||
825 | if (entry->style == COMMUNITY_LIST_STANDARD) { | |
826 | if (community_include(entry->u.com, COMMUNITY_INTERNET)) | |
827 | return entry->direct == COMMUNITY_PERMIT ? 1 | |
828 | : 0; | |
829 | ||
830 | if (community_cmp(com, entry->u.com)) | |
831 | return entry->direct == COMMUNITY_PERMIT ? 1 | |
832 | : 0; | |
833 | } else if (entry->style == COMMUNITY_LIST_EXPANDED) { | |
834 | if (community_regexp_match(com, entry->reg)) | |
835 | return entry->direct == COMMUNITY_PERMIT ? 1 | |
836 | : 0; | |
837 | } | |
838 | } | |
839 | return 0; | |
718e3744 | 840 | } |
841 | ||
8708b74f | 842 | /* Delete all permitted communities in the list from com. */ |
d62a17ae | 843 | struct community *community_list_match_delete(struct community *com, |
844 | struct community_list *list) | |
718e3744 | 845 | { |
d62a17ae | 846 | struct community_entry *entry; |
d7c0a89a QY |
847 | uint32_t val; |
848 | uint32_t com_index_to_delete[com->size]; | |
d62a17ae | 849 | int delete_index = 0; |
850 | int i; | |
851 | ||
852 | /* Loop over each community value and evaluate each against the | |
853 | * community-list. If we need to delete a community value add its index | |
ceead39c | 854 | * to com_index_to_delete. |
d62a17ae | 855 | */ |
856 | for (i = 0; i < com->size; i++) { | |
857 | val = community_val_get(com, i); | |
858 | ||
859 | for (entry = list->head; entry; entry = entry->next) { | |
860 | if (entry->any) { | |
861 | if (entry->direct == COMMUNITY_PERMIT) { | |
862 | com_index_to_delete[delete_index] = i; | |
863 | delete_index++; | |
864 | } | |
865 | break; | |
866 | } | |
867 | ||
868 | else if ((entry->style == COMMUNITY_LIST_STANDARD) | |
869 | && (community_include(entry->u.com, | |
870 | COMMUNITY_INTERNET) | |
871 | || community_include(entry->u.com, val))) { | |
872 | if (entry->direct == COMMUNITY_PERMIT) { | |
873 | com_index_to_delete[delete_index] = i; | |
874 | delete_index++; | |
875 | } | |
876 | break; | |
877 | } | |
878 | ||
879 | else if ((entry->style == COMMUNITY_LIST_EXPANDED) | |
880 | && community_regexp_include(entry->reg, com, | |
881 | i)) { | |
882 | if (entry->direct == COMMUNITY_PERMIT) { | |
883 | com_index_to_delete[delete_index] = i; | |
884 | delete_index++; | |
885 | } | |
886 | break; | |
887 | } | |
888 | } | |
889 | } | |
5cbea288 | 890 | |
d62a17ae | 891 | /* Delete all of the communities we flagged for deletion */ |
892 | for (i = delete_index - 1; i >= 0; i--) { | |
893 | val = community_val_get(com, com_index_to_delete[i]); | |
0743b61d | 894 | val = htonl(val); |
d62a17ae | 895 | community_del_val(com, &val); |
896 | } | |
5cbea288 | 897 | |
d62a17ae | 898 | return com; |
718e3744 | 899 | } |
900 | ||
901 | /* To avoid duplicated entry in the community-list, this function | |
902 | compares specified entry to existing entry. */ | |
d62a17ae | 903 | static int community_list_dup_check(struct community_list *list, |
904 | struct community_entry *new) | |
718e3744 | 905 | { |
d62a17ae | 906 | struct community_entry *entry; |
907 | ||
908 | for (entry = list->head; entry; entry = entry->next) { | |
909 | if (entry->style != new->style) | |
910 | continue; | |
911 | ||
912 | if (entry->direct != new->direct) | |
913 | continue; | |
914 | ||
915 | if (entry->any != new->any) | |
916 | continue; | |
917 | ||
918 | if (entry->any) | |
919 | return 1; | |
920 | ||
921 | switch (entry->style) { | |
922 | case COMMUNITY_LIST_STANDARD: | |
923 | if (community_cmp(entry->u.com, new->u.com)) | |
924 | return 1; | |
925 | break; | |
926 | case LARGE_COMMUNITY_LIST_STANDARD: | |
927 | if (lcommunity_cmp(entry->u.lcom, new->u.lcom)) | |
928 | return 1; | |
929 | break; | |
930 | case EXTCOMMUNITY_LIST_STANDARD: | |
931 | if (ecommunity_cmp(entry->u.ecom, new->u.ecom)) | |
932 | return 1; | |
933 | break; | |
934 | case COMMUNITY_LIST_EXPANDED: | |
935 | case EXTCOMMUNITY_LIST_EXPANDED: | |
936 | case LARGE_COMMUNITY_LIST_EXPANDED: | |
937 | if (strcmp(entry->config, new->config) == 0) | |
938 | return 1; | |
939 | break; | |
940 | default: | |
941 | break; | |
942 | } | |
943 | } | |
944 | return 0; | |
718e3744 | 945 | } |
6b0655a2 | 946 | |
718e3744 | 947 | /* Set community-list. */ |
d62a17ae | 948 | int community_list_set(struct community_list_handler *ch, const char *name, |
2f8cc0e5 | 949 | const char *str, const char *seq, int direct, int style) |
718e3744 | 950 | { |
d62a17ae | 951 | struct community_entry *entry = NULL; |
952 | struct community_list *list; | |
953 | struct community *com = NULL; | |
954 | regex_t *regex = NULL; | |
2f8cc0e5 DA |
955 | int64_t seqnum = COMMUNITY_SEQ_NUMBER_AUTO; |
956 | ||
957 | if (seq) | |
958 | seqnum = (int64_t)atol(seq); | |
d62a17ae | 959 | |
960 | /* Get community list. */ | |
961 | list = community_list_get(ch, name, COMMUNITY_LIST_MASTER); | |
962 | ||
963 | /* When community-list already has entry, new entry should have same | |
964 | style. If you want to have mixed style community-list, you can | |
965 | comment out this check. */ | |
966 | if (!community_list_empty_p(list)) { | |
967 | struct community_entry *first; | |
968 | ||
969 | first = list->head; | |
970 | ||
971 | if (style != first->style) { | |
972 | return (first->style == COMMUNITY_LIST_STANDARD | |
973 | ? COMMUNITY_LIST_ERR_STANDARD_CONFLICT | |
974 | : COMMUNITY_LIST_ERR_EXPANDED_CONFLICT); | |
975 | } | |
fee6e4e4 | 976 | } |
718e3744 | 977 | |
d62a17ae | 978 | if (str) { |
979 | if (style == COMMUNITY_LIST_STANDARD) | |
980 | com = community_str2com(str); | |
981 | else | |
982 | regex = bgp_regcomp(str); | |
8708b74f | 983 | |
d62a17ae | 984 | if (!com && !regex) |
985 | return COMMUNITY_LIST_ERR_MALFORMED_VAL; | |
986 | } | |
718e3744 | 987 | |
d62a17ae | 988 | entry = community_entry_new(); |
989 | entry->direct = direct; | |
990 | entry->style = style; | |
991 | entry->any = (str ? 0 : 1); | |
992 | entry->u.com = com; | |
993 | entry->reg = regex; | |
2f8cc0e5 | 994 | entry->seq = seqnum; |
d62a17ae | 995 | entry->config = |
996 | (regex ? XSTRDUP(MTYPE_COMMUNITY_LIST_CONFIG, str) : NULL); | |
997 | ||
998 | /* Do not put duplicated community entry. */ | |
999 | if (community_list_dup_check(list, entry)) | |
1000 | community_entry_free(entry); | |
1001 | else { | |
2f8cc0e5 DA |
1002 | community_list_entry_add(list, entry, ch, |
1003 | COMMUNITY_LIST_MASTER); | |
d62a17ae | 1004 | route_map_notify_dependencies(name, RMAP_EVENT_CLIST_ADDED); |
1005 | } | |
718e3744 | 1006 | |
d62a17ae | 1007 | return 0; |
718e3744 | 1008 | } |
1009 | ||
813d4307 | 1010 | /* Unset community-list */ |
d62a17ae | 1011 | int community_list_unset(struct community_list_handler *ch, const char *name, |
2f8cc0e5 DA |
1012 | const char *str, const char *seq, int direct, |
1013 | int style) | |
718e3744 | 1014 | { |
3571a6a2 | 1015 | struct community_list_master *cm = NULL; |
d62a17ae | 1016 | struct community_entry *entry = NULL; |
1017 | struct community_list *list; | |
1018 | struct community *com = NULL; | |
1019 | ||
1020 | /* Lookup community list. */ | |
e237b0d2 | 1021 | list = community_list_lookup(ch, name, 0, COMMUNITY_LIST_MASTER); |
d62a17ae | 1022 | if (list == NULL) |
1023 | return COMMUNITY_LIST_ERR_CANT_FIND_LIST; | |
1024 | ||
3571a6a2 | 1025 | cm = community_list_master_lookup(ch, COMMUNITY_LIST_MASTER); |
d62a17ae | 1026 | /* Delete all of entry belongs to this community-list. */ |
7298a8e1 | 1027 | if (!str) { |
3571a6a2 | 1028 | community_list_delete(cm, list); |
d62a17ae | 1029 | route_map_notify_dependencies(name, RMAP_EVENT_CLIST_DELETED); |
1030 | return 0; | |
1031 | } | |
718e3744 | 1032 | |
7298a8e1 QY |
1033 | if (style == COMMUNITY_LIST_STANDARD) |
1034 | com = community_str2com(str); | |
718e3744 | 1035 | |
d62a17ae | 1036 | if (com) { |
1037 | entry = community_list_entry_lookup(list, com, direct); | |
3c1f53de | 1038 | community_free(&com); |
d62a17ae | 1039 | } else |
1040 | entry = community_list_entry_lookup(list, str, direct); | |
fee6e4e4 | 1041 | |
d62a17ae | 1042 | if (!entry) |
1043 | return COMMUNITY_LIST_ERR_CANT_FIND_LIST; | |
718e3744 | 1044 | |
3571a6a2 | 1045 | community_list_entry_delete(cm, list, entry); |
d62a17ae | 1046 | route_map_notify_dependencies(name, RMAP_EVENT_CLIST_DELETED); |
718e3744 | 1047 | |
d62a17ae | 1048 | return 0; |
718e3744 | 1049 | } |
1050 | ||
57d187bc | 1051 | /* Delete all permitted large communities in the list from com. */ |
d62a17ae | 1052 | struct lcommunity *lcommunity_list_match_delete(struct lcommunity *lcom, |
1053 | struct community_list *list) | |
57d187bc | 1054 | { |
d62a17ae | 1055 | struct community_entry *entry; |
d7c0a89a QY |
1056 | uint32_t com_index_to_delete[lcom->size]; |
1057 | uint8_t *ptr; | |
d62a17ae | 1058 | int delete_index = 0; |
1059 | int i; | |
1060 | ||
1061 | /* Loop over each lcommunity value and evaluate each against the | |
1062 | * community-list. If we need to delete a community value add its index | |
ceead39c | 1063 | * to com_index_to_delete. |
d62a17ae | 1064 | */ |
d62a17ae | 1065 | for (i = 0; i < lcom->size; i++) { |
534fc195 | 1066 | ptr = lcom->val + (i * LCOMMUNITY_SIZE); |
d62a17ae | 1067 | for (entry = list->head; entry; entry = entry->next) { |
1068 | if (entry->any) { | |
1069 | if (entry->direct == COMMUNITY_PERMIT) { | |
1070 | com_index_to_delete[delete_index] = i; | |
1071 | delete_index++; | |
1072 | } | |
1073 | break; | |
1074 | } | |
1075 | ||
1076 | else if ((entry->style == LARGE_COMMUNITY_LIST_STANDARD) | |
1077 | && lcommunity_include(entry->u.lcom, ptr)) { | |
1078 | if (entry->direct == COMMUNITY_PERMIT) { | |
1079 | com_index_to_delete[delete_index] = i; | |
1080 | delete_index++; | |
1081 | } | |
1082 | break; | |
1083 | } | |
1084 | ||
cde8d696 | 1085 | else if ((entry->style == LARGE_COMMUNITY_LIST_EXPANDED) |
d62a17ae | 1086 | && lcommunity_regexp_include(entry->reg, lcom, |
1087 | i)) { | |
1088 | if (entry->direct == COMMUNITY_PERMIT) { | |
1089 | com_index_to_delete[delete_index] = i; | |
1090 | delete_index++; | |
1091 | } | |
1092 | break; | |
1093 | } | |
1094 | } | |
1095 | } | |
57d187bc | 1096 | |
d62a17ae | 1097 | /* Delete all of the communities we flagged for deletion */ |
d62a17ae | 1098 | for (i = delete_index - 1; i >= 0; i--) { |
0a7dce9b | 1099 | ptr = lcom->val + (com_index_to_delete[i] * LCOMMUNITY_SIZE); |
d62a17ae | 1100 | lcommunity_del_val(lcom, ptr); |
1101 | } | |
57d187bc | 1102 | |
d62a17ae | 1103 | return lcom; |
57d187bc JS |
1104 | } |
1105 | ||
5bd66e2d DA |
1106 | /* Helper to check if every octet do not exceed UINT_MAX */ |
1107 | static int lcommunity_list_valid(const char *community) | |
1108 | { | |
1109 | int octets = 0; | |
1110 | char **splits; | |
1111 | int num; | |
1112 | ||
1113 | frrstr_split(community, ":", &splits, &num); | |
1114 | ||
1115 | for (int i = 0; i < num; i++) { | |
1116 | if (strtoul(splits[i], NULL, 10) > UINT_MAX) | |
1117 | return 0; | |
1118 | ||
1119 | if (strlen(splits[i]) == 0) | |
1120 | return 0; | |
1121 | ||
1122 | octets++; | |
1123 | XFREE(MTYPE_TMP, splits[i]); | |
1124 | } | |
1125 | XFREE(MTYPE_TMP, splits); | |
1126 | ||
1127 | if (octets < 3) | |
1128 | return 0; | |
1129 | ||
1130 | return 1; | |
1131 | } | |
1132 | ||
57d187bc | 1133 | /* Set lcommunity-list. */ |
d62a17ae | 1134 | int lcommunity_list_set(struct community_list_handler *ch, const char *name, |
2f8cc0e5 | 1135 | const char *str, const char *seq, int direct, int style) |
57d187bc | 1136 | { |
d62a17ae | 1137 | struct community_entry *entry = NULL; |
1138 | struct community_list *list; | |
1139 | struct lcommunity *lcom = NULL; | |
1140 | regex_t *regex = NULL; | |
2f8cc0e5 DA |
1141 | int64_t seqnum = COMMUNITY_SEQ_NUMBER_AUTO; |
1142 | ||
1143 | if (seq) | |
1144 | seqnum = (int64_t)atol(seq); | |
d62a17ae | 1145 | |
1146 | /* Get community list. */ | |
1147 | list = community_list_get(ch, name, LARGE_COMMUNITY_LIST_MASTER); | |
1148 | ||
1149 | /* When community-list already has entry, new entry should have same | |
1150 | style. If you want to have mixed style community-list, you can | |
1151 | comment out this check. */ | |
1152 | if (!community_list_empty_p(list)) { | |
1153 | struct community_entry *first; | |
1154 | ||
1155 | first = list->head; | |
1156 | ||
1157 | if (style != first->style) { | |
1158 | return (first->style == COMMUNITY_LIST_STANDARD | |
1159 | ? COMMUNITY_LIST_ERR_STANDARD_CONFLICT | |
1160 | : COMMUNITY_LIST_ERR_EXPANDED_CONFLICT); | |
1161 | } | |
1162 | } | |
57d187bc | 1163 | |
d62a17ae | 1164 | if (str) { |
5bd66e2d DA |
1165 | if (!lcommunity_list_valid(str)) |
1166 | return COMMUNITY_LIST_ERR_MALFORMED_VAL; | |
1167 | ||
d62a17ae | 1168 | if (style == LARGE_COMMUNITY_LIST_STANDARD) |
1169 | lcom = lcommunity_str2com(str); | |
1170 | else | |
1171 | regex = bgp_regcomp(str); | |
57d187bc | 1172 | |
d62a17ae | 1173 | if (!lcom && !regex) |
1174 | return COMMUNITY_LIST_ERR_MALFORMED_VAL; | |
1175 | } | |
57d187bc | 1176 | |
d62a17ae | 1177 | entry = community_entry_new(); |
1178 | entry->direct = direct; | |
1179 | entry->style = style; | |
1180 | entry->any = (str ? 0 : 1); | |
1181 | entry->u.lcom = lcom; | |
1182 | entry->reg = regex; | |
2f8cc0e5 | 1183 | entry->seq = seqnum; |
8d9b8ed9 PM |
1184 | entry->config = |
1185 | (regex ? XSTRDUP(MTYPE_COMMUNITY_LIST_CONFIG, str) : NULL); | |
d62a17ae | 1186 | |
1187 | /* Do not put duplicated community entry. */ | |
1188 | if (community_list_dup_check(list, entry)) | |
1189 | community_entry_free(entry); | |
35f6f850 | 1190 | else { |
2f8cc0e5 DA |
1191 | community_list_entry_add(list, entry, ch, |
1192 | LARGE_COMMUNITY_LIST_MASTER); | |
35f6f850 | 1193 | route_map_notify_dependencies(name, RMAP_EVENT_LLIST_ADDED); |
1194 | } | |
d62a17ae | 1195 | |
1196 | return 0; | |
57d187bc JS |
1197 | } |
1198 | ||
1199 | /* Unset community-list. When str is NULL, delete all of | |
1200 | community-list entry belongs to the specified name. */ | |
d62a17ae | 1201 | int lcommunity_list_unset(struct community_list_handler *ch, const char *name, |
2f8cc0e5 DA |
1202 | const char *str, const char *seq, int direct, |
1203 | int style) | |
57d187bc | 1204 | { |
3571a6a2 | 1205 | struct community_list_master *cm = NULL; |
d62a17ae | 1206 | struct community_entry *entry = NULL; |
1207 | struct community_list *list; | |
1208 | struct lcommunity *lcom = NULL; | |
1209 | regex_t *regex = NULL; | |
1210 | ||
1211 | /* Lookup community list. */ | |
e237b0d2 | 1212 | list = community_list_lookup(ch, name, 0, LARGE_COMMUNITY_LIST_MASTER); |
d62a17ae | 1213 | if (list == NULL) |
1214 | return COMMUNITY_LIST_ERR_CANT_FIND_LIST; | |
1215 | ||
3571a6a2 | 1216 | cm = community_list_master_lookup(ch, LARGE_COMMUNITY_LIST_MASTER); |
d62a17ae | 1217 | /* Delete all of entry belongs to this community-list. */ |
1218 | if (!str) { | |
3571a6a2 | 1219 | community_list_delete(cm, list); |
35f6f850 | 1220 | route_map_notify_dependencies(name, RMAP_EVENT_LLIST_DELETED); |
d62a17ae | 1221 | return 0; |
1222 | } | |
57d187bc | 1223 | |
d62a17ae | 1224 | if (style == LARGE_COMMUNITY_LIST_STANDARD) |
1225 | lcom = lcommunity_str2com(str); | |
1226 | else | |
1227 | regex = bgp_regcomp(str); | |
57d187bc | 1228 | |
d62a17ae | 1229 | if (!lcom && !regex) |
1230 | return COMMUNITY_LIST_ERR_MALFORMED_VAL; | |
57d187bc | 1231 | |
d62a17ae | 1232 | if (lcom) |
1233 | entry = community_list_entry_lookup(list, lcom, direct); | |
1234 | else | |
1235 | entry = community_list_entry_lookup(list, str, direct); | |
57d187bc | 1236 | |
d62a17ae | 1237 | if (lcom) |
1238 | lcommunity_free(&lcom); | |
1239 | if (regex) | |
1240 | bgp_regex_free(regex); | |
57d187bc | 1241 | |
d62a17ae | 1242 | if (!entry) |
1243 | return COMMUNITY_LIST_ERR_CANT_FIND_LIST; | |
57d187bc | 1244 | |
3571a6a2 | 1245 | community_list_entry_delete(cm, list, entry); |
35f6f850 | 1246 | route_map_notify_dependencies(name, RMAP_EVENT_LLIST_DELETED); |
57d187bc | 1247 | |
d62a17ae | 1248 | return 0; |
57d187bc JS |
1249 | } |
1250 | ||
718e3744 | 1251 | /* Set extcommunity-list. */ |
d62a17ae | 1252 | int extcommunity_list_set(struct community_list_handler *ch, const char *name, |
2f8cc0e5 DA |
1253 | const char *str, const char *seq, int direct, |
1254 | int style) | |
718e3744 | 1255 | { |
d62a17ae | 1256 | struct community_entry *entry = NULL; |
1257 | struct community_list *list; | |
1258 | struct ecommunity *ecom = NULL; | |
1259 | regex_t *regex = NULL; | |
2f8cc0e5 DA |
1260 | int64_t seqnum = COMMUNITY_SEQ_NUMBER_AUTO; |
1261 | ||
1262 | if (seq) | |
1263 | seqnum = (int64_t)atol(seq); | |
718e3744 | 1264 | |
fa301630 | 1265 | if (str == NULL) |
1266 | return COMMUNITY_LIST_ERR_MALFORMED_VAL; | |
1267 | ||
d62a17ae | 1268 | /* Get community list. */ |
1269 | list = community_list_get(ch, name, EXTCOMMUNITY_LIST_MASTER); | |
718e3744 | 1270 | |
d62a17ae | 1271 | /* When community-list already has entry, new entry should have same |
1272 | style. If you want to have mixed style community-list, you can | |
1273 | comment out this check. */ | |
1274 | if (!community_list_empty_p(list)) { | |
1275 | struct community_entry *first; | |
718e3744 | 1276 | |
d62a17ae | 1277 | first = list->head; |
718e3744 | 1278 | |
d62a17ae | 1279 | if (style != first->style) { |
1280 | return (first->style == EXTCOMMUNITY_LIST_STANDARD | |
1281 | ? COMMUNITY_LIST_ERR_STANDARD_CONFLICT | |
1282 | : COMMUNITY_LIST_ERR_EXPANDED_CONFLICT); | |
1283 | } | |
fee6e4e4 | 1284 | } |
718e3744 | 1285 | |
d62a17ae | 1286 | if (style == EXTCOMMUNITY_LIST_STANDARD) |
1287 | ecom = ecommunity_str2com(str, 0, 1); | |
1288 | else | |
1289 | regex = bgp_regcomp(str); | |
1290 | ||
1291 | if (!ecom && !regex) | |
1292 | return COMMUNITY_LIST_ERR_MALFORMED_VAL; | |
1293 | ||
1294 | if (ecom) | |
1295 | ecom->str = | |
1296 | ecommunity_ecom2str(ecom, ECOMMUNITY_FORMAT_DISPLAY, 0); | |
1297 | ||
1298 | entry = community_entry_new(); | |
1299 | entry->direct = direct; | |
1300 | entry->style = style; | |
fa301630 | 1301 | entry->any = 0; |
d62a17ae | 1302 | if (ecom) |
1303 | entry->config = ecommunity_ecom2str( | |
1304 | ecom, ECOMMUNITY_FORMAT_COMMUNITY_LIST, 0); | |
1305 | else if (regex) | |
1306 | entry->config = XSTRDUP(MTYPE_COMMUNITY_LIST_CONFIG, str); | |
1307 | ||
1308 | entry->u.ecom = ecom; | |
1309 | entry->reg = regex; | |
2f8cc0e5 | 1310 | entry->seq = seqnum; |
d62a17ae | 1311 | |
1312 | /* Do not put duplicated community entry. */ | |
1313 | if (community_list_dup_check(list, entry)) | |
1314 | community_entry_free(entry); | |
1315 | else { | |
2f8cc0e5 DA |
1316 | community_list_entry_add(list, entry, ch, |
1317 | EXTCOMMUNITY_LIST_MASTER); | |
d62a17ae | 1318 | route_map_notify_dependencies(name, RMAP_EVENT_ECLIST_ADDED); |
1319 | } | |
718e3744 | 1320 | |
d62a17ae | 1321 | return 0; |
718e3744 | 1322 | } |
1323 | ||
7298a8e1 QY |
1324 | /* Unset extcommunity-list. |
1325 | * | |
1326 | * When str is NULL, delete all extcommunity-list entries belonging to the | |
1327 | * specified name. | |
1328 | */ | |
d62a17ae | 1329 | int extcommunity_list_unset(struct community_list_handler *ch, const char *name, |
2f8cc0e5 DA |
1330 | const char *str, const char *seq, int direct, |
1331 | int style) | |
718e3744 | 1332 | { |
3571a6a2 | 1333 | struct community_list_master *cm = NULL; |
d62a17ae | 1334 | struct community_entry *entry = NULL; |
1335 | struct community_list *list; | |
1336 | struct ecommunity *ecom = NULL; | |
1337 | ||
1338 | /* Lookup extcommunity list. */ | |
e237b0d2 | 1339 | list = community_list_lookup(ch, name, 0, EXTCOMMUNITY_LIST_MASTER); |
d62a17ae | 1340 | if (list == NULL) |
1341 | return COMMUNITY_LIST_ERR_CANT_FIND_LIST; | |
1342 | ||
3571a6a2 | 1343 | cm = community_list_master_lookup(ch, EXTCOMMUNITY_LIST_MASTER); |
d62a17ae | 1344 | /* Delete all of entry belongs to this extcommunity-list. */ |
7298a8e1 | 1345 | if (!str) { |
3571a6a2 | 1346 | community_list_delete(cm, list); |
d62a17ae | 1347 | route_map_notify_dependencies(name, RMAP_EVENT_ECLIST_DELETED); |
1348 | return 0; | |
1349 | } | |
718e3744 | 1350 | |
7298a8e1 QY |
1351 | if (style == EXTCOMMUNITY_LIST_STANDARD) |
1352 | ecom = ecommunity_str2com(str, 0, 1); | |
718e3744 | 1353 | |
d62a17ae | 1354 | if (ecom) { |
1355 | entry = community_list_entry_lookup(list, ecom, direct); | |
1356 | ecommunity_free(&ecom); | |
1357 | } else | |
1358 | entry = community_list_entry_lookup(list, str, direct); | |
fee6e4e4 | 1359 | |
d62a17ae | 1360 | if (!entry) |
1361 | return COMMUNITY_LIST_ERR_CANT_FIND_LIST; | |
718e3744 | 1362 | |
3571a6a2 | 1363 | community_list_entry_delete(cm, list, entry); |
d62a17ae | 1364 | route_map_notify_dependencies(name, RMAP_EVENT_ECLIST_DELETED); |
718e3744 | 1365 | |
d62a17ae | 1366 | return 0; |
718e3744 | 1367 | } |
1368 | ||
1369 | /* Initializa community-list. Return community-list handler. */ | |
d62a17ae | 1370 | struct community_list_handler *community_list_init(void) |
718e3744 | 1371 | { |
d62a17ae | 1372 | struct community_list_handler *ch; |
1373 | ch = XCALLOC(MTYPE_COMMUNITY_LIST_HANDLER, | |
1374 | sizeof(struct community_list_handler)); | |
3571a6a2 DS |
1375 | |
1376 | ch->community_list.hash = | |
1377 | hash_create_size(4, bgp_clist_hash_key_community_list, | |
1378 | bgp_clist_hash_cmp_community_list, | |
1379 | "Community List Number Quick Lookup"); | |
1380 | ||
1381 | ch->extcommunity_list.hash = | |
1382 | hash_create_size(4, bgp_clist_hash_key_community_list, | |
1383 | bgp_clist_hash_cmp_community_list, | |
1384 | "Extended Community List Quick Lookup"); | |
1385 | ||
1386 | ch->lcommunity_list.hash = | |
1387 | hash_create_size(4, bgp_clist_hash_key_community_list, | |
1388 | bgp_clist_hash_cmp_community_list, | |
1389 | "Large Community List Quick Lookup"); | |
1390 | ||
d62a17ae | 1391 | return ch; |
718e3744 | 1392 | } |
1393 | ||
1394 | /* Terminate community-list. */ | |
d62a17ae | 1395 | void community_list_terminate(struct community_list_handler *ch) |
718e3744 | 1396 | { |
d62a17ae | 1397 | struct community_list_master *cm; |
1398 | struct community_list *list; | |
1399 | ||
1400 | cm = &ch->community_list; | |
1401 | while ((list = cm->num.head) != NULL) | |
3571a6a2 | 1402 | community_list_delete(cm, list); |
d62a17ae | 1403 | while ((list = cm->str.head) != NULL) |
3571a6a2 DS |
1404 | community_list_delete(cm, list); |
1405 | hash_free(cm->hash); | |
d62a17ae | 1406 | |
1407 | cm = &ch->lcommunity_list; | |
1408 | while ((list = cm->num.head) != NULL) | |
3571a6a2 | 1409 | community_list_delete(cm, list); |
d62a17ae | 1410 | while ((list = cm->str.head) != NULL) |
3571a6a2 DS |
1411 | community_list_delete(cm, list); |
1412 | hash_free(cm->hash); | |
d62a17ae | 1413 | |
1414 | cm = &ch->extcommunity_list; | |
1415 | while ((list = cm->num.head) != NULL) | |
3571a6a2 | 1416 | community_list_delete(cm, list); |
d62a17ae | 1417 | while ((list = cm->str.head) != NULL) |
3571a6a2 DS |
1418 | community_list_delete(cm, list); |
1419 | hash_free(cm->hash); | |
d62a17ae | 1420 | |
1421 | XFREE(MTYPE_COMMUNITY_LIST_HANDLER, ch); | |
718e3744 | 1422 | } |