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acddc0ed | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
718e3744 | 2 | /* BGP community-list and extcommunity-list. |
896014f4 | 3 | * Copyright (C) 1999 Kunihiro Ishiguro |
896014f4 | 4 | */ |
718e3744 | 5 | |
6 | #include <zebra.h> | |
7 | ||
8 | #include "command.h" | |
9 | #include "prefix.h" | |
10 | #include "memory.h" | |
3f9c7369 | 11 | #include "queue.h" |
039f3a34 | 12 | #include "filter.h" |
937652c6 | 13 | #include "stream.h" |
3571a6a2 | 14 | #include "jhash.h" |
5bd66e2d | 15 | #include "frrstr.h" |
718e3744 | 16 | |
17 | #include "bgpd/bgpd.h" | |
18 | #include "bgpd/bgp_community.h" | |
19 | #include "bgpd/bgp_ecommunity.h" | |
57d187bc | 20 | #include "bgpd/bgp_lcommunity.h" |
f4dd8296 | 21 | #include "bgpd/bgp_community_alias.h" |
718e3744 | 22 | #include "bgpd/bgp_aspath.h" |
23 | #include "bgpd/bgp_regex.h" | |
24 | #include "bgpd/bgp_clist.h" | |
6b0655a2 | 25 | |
2f8cc0e5 DA |
26 | /* Calculate new sequential number. */ |
27 | static int64_t bgp_clist_new_seq_get(struct community_list *list) | |
28 | { | |
29 | int64_t maxseq; | |
30 | int64_t newseq; | |
31 | struct community_entry *entry; | |
32 | ||
1bb379bf | 33 | maxseq = 0; |
2f8cc0e5 DA |
34 | |
35 | for (entry = list->head; entry; entry = entry->next) { | |
36 | if (maxseq < entry->seq) | |
37 | maxseq = entry->seq; | |
38 | } | |
39 | ||
40 | newseq = ((maxseq / 5) * 5) + 5; | |
41 | ||
42 | return (newseq > UINT_MAX) ? UINT_MAX : newseq; | |
43 | } | |
44 | ||
45 | /* Return community-list entry which has same seq number. */ | |
46 | static struct community_entry *bgp_clist_seq_check(struct community_list *list, | |
47 | int64_t seq) | |
48 | { | |
49 | struct community_entry *entry; | |
50 | ||
51 | for (entry = list->head; entry; entry = entry->next) | |
52 | if (entry->seq == seq) | |
53 | return entry; | |
54 | return NULL; | |
55 | } | |
56 | ||
d8b87afe | 57 | static uint32_t bgp_clist_hash_key_community_list(const void *data) |
3571a6a2 | 58 | { |
d8b87afe | 59 | struct community_list *cl = (struct community_list *) data; |
3571a6a2 | 60 | |
e237b0d2 DS |
61 | if (cl->name_hash) |
62 | return cl->name_hash; | |
63 | ||
64 | cl->name_hash = bgp_clist_hash_key(cl->name); | |
65 | return cl->name_hash; | |
3571a6a2 DS |
66 | } |
67 | ||
68 | static bool bgp_clist_hash_cmp_community_list(const void *a1, const void *a2) | |
69 | { | |
70 | const struct community_list *cl1 = a1; | |
71 | const struct community_list *cl2 = a2; | |
72 | ||
e237b0d2 DS |
73 | if (cl1->name_hash != cl2->name_hash) |
74 | return false; | |
75 | ||
3571a6a2 DS |
76 | if (strcmp(cl1->name, cl2->name) == 0) |
77 | return true; | |
78 | ||
79 | return false; | |
80 | } | |
81 | ||
718e3744 | 82 | /* Lookup master structure for community-list or |
83 | extcommunity-list. */ | |
84 | struct community_list_master * | |
d62a17ae | 85 | community_list_master_lookup(struct community_list_handler *ch, int master) |
718e3744 | 86 | { |
d62a17ae | 87 | if (ch) |
88 | switch (master) { | |
89 | case COMMUNITY_LIST_MASTER: | |
90 | return &ch->community_list; | |
91 | case EXTCOMMUNITY_LIST_MASTER: | |
92 | return &ch->extcommunity_list; | |
93 | case LARGE_COMMUNITY_LIST_MASTER: | |
94 | return &ch->lcommunity_list; | |
95 | } | |
96 | return NULL; | |
718e3744 | 97 | } |
98 | ||
99 | /* Allocate a new community list entry. */ | |
d62a17ae | 100 | static struct community_entry *community_entry_new(void) |
718e3744 | 101 | { |
d62a17ae | 102 | return XCALLOC(MTYPE_COMMUNITY_LIST_ENTRY, |
103 | sizeof(struct community_entry)); | |
718e3744 | 104 | } |
105 | ||
106 | /* Free community list entry. */ | |
d62a17ae | 107 | static void community_entry_free(struct community_entry *entry) |
718e3744 | 108 | { |
d62a17ae | 109 | switch (entry->style) { |
110 | case COMMUNITY_LIST_STANDARD: | |
111 | if (entry->u.com) | |
3c1f53de | 112 | community_free(&entry->u.com); |
d62a17ae | 113 | break; |
114 | case LARGE_COMMUNITY_LIST_STANDARD: | |
115 | if (entry->u.lcom) | |
116 | lcommunity_free(&entry->u.lcom); | |
117 | break; | |
118 | case EXTCOMMUNITY_LIST_STANDARD: | |
119 | /* In case of standard extcommunity-list, configuration string | |
120 | is made by ecommunity_ecom2str(). */ | |
0a22ddfb | 121 | XFREE(MTYPE_ECOMMUNITY_STR, entry->config); |
d62a17ae | 122 | if (entry->u.ecom) |
123 | ecommunity_free(&entry->u.ecom); | |
124 | break; | |
125 | case COMMUNITY_LIST_EXPANDED: | |
126 | case EXTCOMMUNITY_LIST_EXPANDED: | |
127 | case LARGE_COMMUNITY_LIST_EXPANDED: | |
0a22ddfb | 128 | XFREE(MTYPE_COMMUNITY_LIST_CONFIG, entry->config); |
d62a17ae | 129 | if (entry->reg) |
130 | bgp_regex_free(entry->reg); | |
131 | default: | |
132 | break; | |
133 | } | |
134 | XFREE(MTYPE_COMMUNITY_LIST_ENTRY, entry); | |
718e3744 | 135 | } |
136 | ||
137 | /* Allocate a new community-list. */ | |
d62a17ae | 138 | static struct community_list *community_list_new(void) |
718e3744 | 139 | { |
d62a17ae | 140 | return XCALLOC(MTYPE_COMMUNITY_LIST, sizeof(struct community_list)); |
718e3744 | 141 | } |
142 | ||
143 | /* Free community-list. */ | |
d62a17ae | 144 | static void community_list_free(struct community_list *list) |
718e3744 | 145 | { |
0a22ddfb | 146 | XFREE(MTYPE_COMMUNITY_LIST_NAME, list->name); |
d62a17ae | 147 | XFREE(MTYPE_COMMUNITY_LIST, list); |
718e3744 | 148 | } |
149 | ||
94f2b392 | 150 | static struct community_list * |
d62a17ae | 151 | community_list_insert(struct community_list_handler *ch, const char *name, |
152 | int master) | |
718e3744 | 153 | { |
d62a17ae | 154 | size_t i; |
155 | long number; | |
156 | struct community_list *new; | |
157 | struct community_list *point; | |
158 | struct community_list_list *list; | |
159 | struct community_list_master *cm; | |
160 | ||
161 | /* Lookup community-list master. */ | |
162 | cm = community_list_master_lookup(ch, master); | |
163 | if (!cm) | |
164 | return NULL; | |
165 | ||
166 | /* Allocate new community_list and copy given name. */ | |
167 | new = community_list_new(); | |
168 | new->name = XSTRDUP(MTYPE_COMMUNITY_LIST_NAME, name); | |
e237b0d2 | 169 | new->name_hash = bgp_clist_hash_key_community_list(new); |
d62a17ae | 170 | |
3571a6a2 | 171 | /* Save for later */ |
8e3aae66 | 172 | (void)hash_get(cm->hash, new, hash_alloc_intern); |
3571a6a2 | 173 | |
d62a17ae | 174 | /* If name is made by all digit character. We treat it as |
175 | number. */ | |
176 | for (number = 0, i = 0; i < strlen(name); i++) { | |
fefa5e0f | 177 | if (isdigit((unsigned char)name[i])) |
d62a17ae | 178 | number = (number * 10) + (name[i] - '0'); |
179 | else | |
180 | break; | |
181 | } | |
718e3744 | 182 | |
d62a17ae | 183 | /* In case of name is all digit character */ |
184 | if (i == strlen(name)) { | |
185 | new->sort = COMMUNITY_LIST_NUMBER; | |
718e3744 | 186 | |
d62a17ae | 187 | /* Set access_list to number list. */ |
188 | list = &cm->num; | |
718e3744 | 189 | |
d62a17ae | 190 | for (point = list->head; point; point = point->next) |
191 | if (atol(point->name) >= number) | |
192 | break; | |
193 | } else { | |
194 | new->sort = COMMUNITY_LIST_STRING; | |
718e3744 | 195 | |
d62a17ae | 196 | /* Set access_list to string list. */ |
197 | list = &cm->str; | |
718e3744 | 198 | |
d62a17ae | 199 | /* Set point to insertion point. */ |
200 | for (point = list->head; point; point = point->next) | |
201 | if (strcmp(point->name, name) >= 0) | |
202 | break; | |
203 | } | |
718e3744 | 204 | |
d62a17ae | 205 | /* Link to upper list. */ |
206 | new->parent = list; | |
718e3744 | 207 | |
d62a17ae | 208 | /* In case of this is the first element of master. */ |
209 | if (list->head == NULL) { | |
210 | list->head = list->tail = new; | |
211 | return new; | |
212 | } | |
718e3744 | 213 | |
d62a17ae | 214 | /* In case of insertion is made at the tail of access_list. */ |
215 | if (point == NULL) { | |
216 | new->prev = list->tail; | |
217 | list->tail->next = new; | |
218 | list->tail = new; | |
219 | return new; | |
220 | } | |
718e3744 | 221 | |
d62a17ae | 222 | /* In case of insertion is made at the head of access_list. */ |
223 | if (point == list->head) { | |
224 | new->next = list->head; | |
225 | list->head->prev = new; | |
226 | list->head = new; | |
227 | return new; | |
228 | } | |
718e3744 | 229 | |
d62a17ae | 230 | /* Insertion is made at middle of the access_list. */ |
231 | new->next = point; | |
232 | new->prev = point->prev; | |
718e3744 | 233 | |
d62a17ae | 234 | if (point->prev) |
235 | point->prev->next = new; | |
236 | point->prev = new; | |
718e3744 | 237 | |
d62a17ae | 238 | return new; |
718e3744 | 239 | } |
240 | ||
d62a17ae | 241 | struct community_list *community_list_lookup(struct community_list_handler *ch, |
e237b0d2 DS |
242 | const char *name, |
243 | uint32_t name_hash, | |
244 | int master) | |
718e3744 | 245 | { |
3571a6a2 | 246 | struct community_list lookup; |
d62a17ae | 247 | struct community_list_master *cm; |
718e3744 | 248 | |
d62a17ae | 249 | if (!name) |
250 | return NULL; | |
718e3744 | 251 | |
d62a17ae | 252 | cm = community_list_master_lookup(ch, master); |
253 | if (!cm) | |
254 | return NULL; | |
718e3744 | 255 | |
3571a6a2 | 256 | lookup.name = (char *)name; |
e237b0d2 | 257 | lookup.name_hash = name_hash; |
3571a6a2 | 258 | return hash_get(cm->hash, &lookup, NULL); |
718e3744 | 259 | } |
260 | ||
94f2b392 | 261 | static struct community_list * |
d62a17ae | 262 | community_list_get(struct community_list_handler *ch, const char *name, |
263 | int master) | |
718e3744 | 264 | { |
d62a17ae | 265 | struct community_list *list; |
718e3744 | 266 | |
e237b0d2 | 267 | list = community_list_lookup(ch, name, 0, master); |
d62a17ae | 268 | if (!list) |
269 | list = community_list_insert(ch, name, master); | |
270 | return list; | |
718e3744 | 271 | } |
272 | ||
3571a6a2 DS |
273 | static void community_list_delete(struct community_list_master *cm, |
274 | struct community_list *list) | |
718e3744 | 275 | { |
d62a17ae | 276 | struct community_list_list *clist; |
277 | struct community_entry *entry, *next; | |
718e3744 | 278 | |
d62a17ae | 279 | for (entry = list->head; entry; entry = next) { |
280 | next = entry->next; | |
281 | community_entry_free(entry); | |
282 | } | |
718e3744 | 283 | |
d62a17ae | 284 | clist = list->parent; |
718e3744 | 285 | |
d62a17ae | 286 | if (list->next) |
287 | list->next->prev = list->prev; | |
288 | else | |
289 | clist->tail = list->prev; | |
718e3744 | 290 | |
d62a17ae | 291 | if (list->prev) |
292 | list->prev->next = list->next; | |
293 | else | |
294 | clist->head = list->next; | |
718e3744 | 295 | |
3571a6a2 | 296 | hash_release(cm->hash, list); |
d62a17ae | 297 | community_list_free(list); |
718e3744 | 298 | } |
299 | ||
88f1c947 | 300 | static bool community_list_empty_p(struct community_list *list) |
718e3744 | 301 | { |
88f1c947 | 302 | return list->head == NULL && list->tail == NULL; |
718e3744 | 303 | } |
6b0655a2 | 304 | |
718e3744 | 305 | /* Delete community-list entry from the list. */ |
3571a6a2 DS |
306 | static void community_list_entry_delete(struct community_list_master *cm, |
307 | struct community_list *list, | |
3f54c705 | 308 | struct community_entry *entry) |
718e3744 | 309 | { |
d62a17ae | 310 | if (entry->next) |
311 | entry->next->prev = entry->prev; | |
312 | else | |
313 | list->tail = entry->prev; | |
718e3744 | 314 | |
d62a17ae | 315 | if (entry->prev) |
316 | entry->prev->next = entry->next; | |
317 | else | |
318 | list->head = entry->next; | |
718e3744 | 319 | |
d62a17ae | 320 | community_entry_free(entry); |
718e3744 | 321 | |
d62a17ae | 322 | if (community_list_empty_p(list)) |
3571a6a2 | 323 | community_list_delete(cm, list); |
718e3744 | 324 | } |
325 | ||
96e2fd25 DS |
326 | /* |
327 | * Replace community-list entry in the list. Note that entry is the new one | |
328 | * and replace is one one being replaced. | |
329 | */ | |
330 | static void community_list_entry_replace(struct community_list *list, | |
331 | struct community_entry *replace, | |
332 | struct community_entry *entry) | |
333 | { | |
334 | if (replace->next) { | |
335 | entry->next = replace->next; | |
336 | replace->next->prev = entry; | |
337 | } else { | |
338 | entry->next = NULL; | |
339 | list->tail = entry; | |
340 | } | |
341 | ||
342 | if (replace->prev) { | |
343 | entry->prev = replace->prev; | |
344 | replace->prev->next = entry; | |
345 | } else { | |
346 | entry->prev = NULL; | |
347 | list->head = entry; | |
348 | } | |
349 | ||
350 | community_entry_free(replace); | |
351 | } | |
352 | ||
2f8cc0e5 DA |
353 | /* Add community-list entry to the list. */ |
354 | static void community_list_entry_add(struct community_list *list, | |
355 | struct community_entry *entry, | |
356 | struct community_list_handler *ch, | |
357 | int master) | |
358 | { | |
2f8cc0e5 DA |
359 | struct community_entry *replace; |
360 | struct community_entry *point; | |
361 | ||
2f8cc0e5 DA |
362 | /* Automatic assignment of seq no. */ |
363 | if (entry->seq == COMMUNITY_SEQ_NUMBER_AUTO) | |
364 | entry->seq = bgp_clist_new_seq_get(list); | |
365 | ||
366 | if (list->tail && entry->seq > list->tail->seq) | |
367 | point = NULL; | |
368 | else { | |
369 | replace = bgp_clist_seq_check(list, entry->seq); | |
96e2fd25 DS |
370 | if (replace) { |
371 | community_list_entry_replace(list, replace, entry); | |
372 | return; | |
373 | } | |
2f8cc0e5 DA |
374 | |
375 | /* Check insert point. */ | |
376 | for (point = list->head; point; point = point->next) | |
377 | if (point->seq >= entry->seq) | |
378 | break; | |
379 | } | |
380 | ||
381 | /* In case of this is the first element of the list. */ | |
382 | entry->next = point; | |
383 | ||
384 | if (point) { | |
385 | if (point->prev) | |
386 | point->prev->next = entry; | |
387 | else | |
388 | list->head = entry; | |
389 | ||
390 | entry->prev = point->prev; | |
391 | point->prev = entry; | |
392 | } else { | |
393 | if (list->tail) | |
394 | list->tail->next = entry; | |
395 | else | |
396 | list->head = entry; | |
397 | ||
398 | entry->prev = list->tail; | |
399 | list->tail = entry; | |
400 | } | |
401 | } | |
402 | ||
718e3744 | 403 | /* Lookup community-list entry from the list. */ |
404 | static struct community_entry * | |
d62a17ae | 405 | community_list_entry_lookup(struct community_list *list, const void *arg, |
406 | int direct) | |
718e3744 | 407 | { |
d62a17ae | 408 | struct community_entry *entry; |
409 | ||
410 | for (entry = list->head; entry; entry = entry->next) { | |
411 | switch (entry->style) { | |
412 | case COMMUNITY_LIST_STANDARD: | |
413 | if (entry->direct == direct | |
414 | && community_cmp(entry->u.com, arg)) | |
415 | return entry; | |
416 | break; | |
417 | case EXTCOMMUNITY_LIST_STANDARD: | |
418 | if (entry->direct == direct | |
419 | && ecommunity_cmp(entry->u.ecom, arg)) | |
420 | return entry; | |
421 | break; | |
422 | case LARGE_COMMUNITY_LIST_STANDARD: | |
423 | if (entry->direct == direct | |
424 | && lcommunity_cmp(entry->u.lcom, arg)) | |
425 | return entry; | |
426 | break; | |
427 | case COMMUNITY_LIST_EXPANDED: | |
428 | case EXTCOMMUNITY_LIST_EXPANDED: | |
429 | case LARGE_COMMUNITY_LIST_EXPANDED: | |
430 | if (entry->direct == direct | |
431 | && strcmp(entry->config, arg) == 0) | |
432 | return entry; | |
433 | break; | |
434 | default: | |
435 | break; | |
436 | } | |
437 | } | |
438 | return NULL; | |
718e3744 | 439 | } |
6b0655a2 | 440 | |
d62a17ae | 441 | static char *community_str_get(struct community *com, int i) |
5cbea288 | 442 | { |
d7c0a89a QY |
443 | uint32_t comval; |
444 | uint16_t as; | |
445 | uint16_t val; | |
d62a17ae | 446 | char *str; |
d62a17ae | 447 | |
d7c0a89a | 448 | memcpy(&comval, com_nthval(com, i), sizeof(uint32_t)); |
d62a17ae | 449 | comval = ntohl(comval); |
450 | ||
451 | switch (comval) { | |
81a57d81 DA |
452 | #if CONFDATE > 20230801 |
453 | CPP_NOTICE("Deprecate COMMUNITY_INTERNET BGP community") | |
454 | #endif | |
d62a17ae | 455 | case COMMUNITY_INTERNET: |
aeab4a80 | 456 | str = XSTRDUP(MTYPE_COMMUNITY_STR, "internet"); |
81a57d81 | 457 | zlog_warn("`internet` community is deprecated"); |
d62a17ae | 458 | break; |
aa861c10 | 459 | case COMMUNITY_GSHUT: |
aeab4a80 | 460 | str = XSTRDUP(MTYPE_COMMUNITY_STR, "graceful-shutdown"); |
aa861c10 C |
461 | break; |
462 | case COMMUNITY_ACCEPT_OWN: | |
aeab4a80 | 463 | str = XSTRDUP(MTYPE_COMMUNITY_STR, "accept-own"); |
aa861c10 C |
464 | break; |
465 | case COMMUNITY_ROUTE_FILTER_TRANSLATED_v4: | |
aeab4a80 QY |
466 | str = XSTRDUP(MTYPE_COMMUNITY_STR, |
467 | "route-filter-translated-v4"); | |
aa861c10 C |
468 | break; |
469 | case COMMUNITY_ROUTE_FILTER_v4: | |
aeab4a80 | 470 | str = XSTRDUP(MTYPE_COMMUNITY_STR, "route-filter-v4"); |
aa861c10 C |
471 | break; |
472 | case COMMUNITY_ROUTE_FILTER_TRANSLATED_v6: | |
aeab4a80 QY |
473 | str = XSTRDUP(MTYPE_COMMUNITY_STR, |
474 | "route-filter-translated-v6"); | |
aa861c10 C |
475 | break; |
476 | case COMMUNITY_ROUTE_FILTER_v6: | |
aeab4a80 | 477 | str = XSTRDUP(MTYPE_COMMUNITY_STR, "route-filter-v6"); |
aa861c10 C |
478 | break; |
479 | case COMMUNITY_LLGR_STALE: | |
aeab4a80 | 480 | str = XSTRDUP(MTYPE_COMMUNITY_STR, "llgr-stale"); |
aa861c10 C |
481 | break; |
482 | case COMMUNITY_NO_LLGR: | |
aeab4a80 | 483 | str = XSTRDUP(MTYPE_COMMUNITY_STR, "no-llgr"); |
aa861c10 C |
484 | break; |
485 | case COMMUNITY_ACCEPT_OWN_NEXTHOP: | |
aeab4a80 | 486 | str = XSTRDUP(MTYPE_COMMUNITY_STR, "accept-own-nexthop"); |
aa861c10 C |
487 | break; |
488 | case COMMUNITY_BLACKHOLE: | |
aeab4a80 | 489 | str = XSTRDUP(MTYPE_COMMUNITY_STR, "blackhole"); |
aa861c10 | 490 | break; |
d62a17ae | 491 | case COMMUNITY_NO_EXPORT: |
aeab4a80 | 492 | str = XSTRDUP(MTYPE_COMMUNITY_STR, "no-export"); |
d62a17ae | 493 | break; |
494 | case COMMUNITY_NO_ADVERTISE: | |
aeab4a80 | 495 | str = XSTRDUP(MTYPE_COMMUNITY_STR, "no-advertise"); |
d62a17ae | 496 | break; |
497 | case COMMUNITY_LOCAL_AS: | |
aeab4a80 | 498 | str = XSTRDUP(MTYPE_COMMUNITY_STR, "local-AS"); |
d62a17ae | 499 | break; |
aa861c10 | 500 | case COMMUNITY_NO_PEER: |
aeab4a80 | 501 | str = XSTRDUP(MTYPE_COMMUNITY_STR, "no-peer"); |
7f323236 | 502 | break; |
809d6365 | 503 | default: |
aeab4a80 | 504 | str = XSTRDUP(MTYPE_COMMUNITY_STR, "65536:65535"); |
d62a17ae | 505 | as = (comval >> 16) & 0xFFFF; |
506 | val = comval & 0xFFFF; | |
aeab4a80 | 507 | snprintf(str, strlen(str), "%u:%d", as, val); |
d62a17ae | 508 | break; |
509 | } | |
5cbea288 | 510 | |
d62a17ae | 511 | return str; |
5cbea288 DS |
512 | } |
513 | ||
514 | /* Internal function to perform regular expression match for | |
2acb4ac2 | 515 | * a single community. */ |
88f1c947 | 516 | static bool community_regexp_include(regex_t *reg, struct community *com, int i) |
5cbea288 | 517 | { |
d62a17ae | 518 | char *str; |
519 | int rv; | |
5cbea288 | 520 | |
d62a17ae | 521 | /* When there is no communities attribute it is treated as empty string. |
522 | */ | |
523 | if (com == NULL || com->size == 0) | |
524 | str = XSTRDUP(MTYPE_COMMUNITY_STR, ""); | |
525 | else | |
526 | str = community_str_get(com, i); | |
5cbea288 | 527 | |
d62a17ae | 528 | /* Regular expression match. */ |
529 | rv = regexec(reg, str, 0, NULL, 0); | |
b84ee83b | 530 | |
d62a17ae | 531 | XFREE(MTYPE_COMMUNITY_STR, str); |
b84ee83b | 532 | |
88f1c947 | 533 | return rv == 0; |
5cbea288 DS |
534 | } |
535 | ||
718e3744 | 536 | /* Internal function to perform regular expression match for community |
537 | attribute. */ | |
88f1c947 | 538 | static bool community_regexp_match(struct community *com, regex_t *reg) |
718e3744 | 539 | { |
d62a17ae | 540 | const char *str; |
15bc6a40 IR |
541 | char *regstr; |
542 | int rv; | |
718e3744 | 543 | |
d62a17ae | 544 | /* When there is no communities attribute it is treated as empty |
545 | string. */ | |
546 | if (com == NULL || com->size == 0) | |
547 | str = ""; | |
548 | else | |
c0945b78 | 549 | str = community_str(com, false, true); |
718e3744 | 550 | |
15bc6a40 IR |
551 | regstr = bgp_alias2community_str(str); |
552 | ||
d62a17ae | 553 | /* Regular expression match. */ |
15bc6a40 | 554 | rv = regexec(reg, regstr, 0, NULL, 0); |
718e3744 | 555 | |
15bc6a40 IR |
556 | XFREE(MTYPE_TMP, regstr); |
557 | ||
558 | return rv == 0; | |
718e3744 | 559 | } |
560 | ||
d62a17ae | 561 | static char *lcommunity_str_get(struct lcommunity *lcom, int i) |
57d187bc | 562 | { |
d62a17ae | 563 | struct lcommunity_val lcomval; |
d7c0a89a QY |
564 | uint32_t globaladmin; |
565 | uint32_t localdata1; | |
566 | uint32_t localdata2; | |
d62a17ae | 567 | char *str; |
1be1693e | 568 | const uint8_t *ptr; |
d62a17ae | 569 | |
ff9104a2 | 570 | ptr = lcom->val + (i * LCOMMUNITY_SIZE); |
d62a17ae | 571 | |
572 | memcpy(&lcomval, ptr, LCOMMUNITY_SIZE); | |
573 | ||
574 | /* Allocate memory. 48 bytes taken off bgp_lcommunity.c */ | |
d7c0a89a | 575 | ptr = (uint8_t *)lcomval.val; |
937652c6 DL |
576 | ptr = ptr_get_be32(ptr, &globaladmin); |
577 | ptr = ptr_get_be32(ptr, &localdata1); | |
578 | ptr = ptr_get_be32(ptr, &localdata2); | |
579 | (void)ptr; /* consume value */ | |
d62a17ae | 580 | |
fc746f1c QY |
581 | str = XMALLOC(MTYPE_LCOMMUNITY_STR, 48); |
582 | snprintf(str, 48, "%u:%u:%u", globaladmin, localdata1, localdata2); | |
d62a17ae | 583 | |
584 | return str; | |
57d187bc JS |
585 | } |
586 | ||
587 | /* Internal function to perform regular expression match for | |
2acb4ac2 | 588 | * a single community. */ |
88f1c947 DA |
589 | static bool lcommunity_regexp_include(regex_t *reg, struct lcommunity *lcom, |
590 | int i) | |
57d187bc | 591 | { |
d62a17ae | 592 | char *str; |
593 | ||
594 | /* When there is no communities attribute it is treated as empty string. | |
595 | */ | |
596 | if (lcom == NULL || lcom->size == 0) | |
597 | str = XSTRDUP(MTYPE_LCOMMUNITY_STR, ""); | |
598 | else | |
599 | str = lcommunity_str_get(lcom, i); | |
600 | ||
601 | /* Regular expression match. */ | |
602 | if (regexec(reg, str, 0, NULL, 0) == 0) { | |
603 | XFREE(MTYPE_LCOMMUNITY_STR, str); | |
88f1c947 | 604 | return true; |
d62a17ae | 605 | } |
57d187bc | 606 | |
d62a17ae | 607 | XFREE(MTYPE_LCOMMUNITY_STR, str); |
608 | /* No match. */ | |
88f1c947 | 609 | return false; |
57d187bc JS |
610 | } |
611 | ||
88f1c947 | 612 | static bool lcommunity_regexp_match(struct lcommunity *com, regex_t *reg) |
57d187bc | 613 | { |
d62a17ae | 614 | const char *str; |
15bc6a40 IR |
615 | char *regstr; |
616 | int rv; | |
57d187bc | 617 | |
d62a17ae | 618 | /* When there is no communities attribute it is treated as empty |
619 | string. */ | |
620 | if (com == NULL || com->size == 0) | |
621 | str = ""; | |
622 | else | |
c0945b78 | 623 | str = lcommunity_str(com, false, true); |
57d187bc | 624 | |
15bc6a40 IR |
625 | regstr = bgp_alias2community_str(str); |
626 | ||
d62a17ae | 627 | /* Regular expression match. */ |
15bc6a40 | 628 | rv = regexec(reg, regstr, 0, NULL, 0); |
57d187bc | 629 | |
15bc6a40 IR |
630 | XFREE(MTYPE_TMP, regstr); |
631 | ||
632 | return rv == 0; | |
57d187bc JS |
633 | } |
634 | ||
635 | ||
88f1c947 | 636 | static bool ecommunity_regexp_match(struct ecommunity *ecom, regex_t *reg) |
8708b74f | 637 | { |
d62a17ae | 638 | const char *str; |
8708b74f | 639 | |
d62a17ae | 640 | /* When there is no communities attribute it is treated as empty |
641 | string. */ | |
642 | if (ecom == NULL || ecom->size == 0) | |
643 | str = ""; | |
644 | else | |
645 | str = ecommunity_str(ecom); | |
8708b74f | 646 | |
d62a17ae | 647 | /* Regular expression match. */ |
648 | if (regexec(reg, str, 0, NULL, 0) == 0) | |
88f1c947 | 649 | return true; |
8708b74f | 650 | |
d62a17ae | 651 | /* No match. */ |
88f1c947 | 652 | return false; |
8708b74f | 653 | } |
654 | ||
718e3744 | 655 | /* When given community attribute matches to the community-list return |
656 | 1 else return 0. */ | |
88f1c947 | 657 | bool community_list_match(struct community *com, struct community_list *list) |
718e3744 | 658 | { |
d62a17ae | 659 | struct community_entry *entry; |
660 | ||
661 | for (entry = list->head; entry; entry = entry->next) { | |
662 | if (entry->any) | |
88f1c947 | 663 | return entry->direct == COMMUNITY_PERMIT; |
d62a17ae | 664 | |
665 | if (entry->style == COMMUNITY_LIST_STANDARD) { | |
b6dbdee5 DA |
666 | if (community_include(entry->u.com, COMMUNITY_INTERNET)) |
667 | return entry->direct == COMMUNITY_PERMIT; | |
668 | ||
d62a17ae | 669 | if (community_match(com, entry->u.com)) |
88f1c947 | 670 | return entry->direct == COMMUNITY_PERMIT; |
d62a17ae | 671 | } else if (entry->style == COMMUNITY_LIST_EXPANDED) { |
672 | if (community_regexp_match(com, entry->reg)) | |
88f1c947 | 673 | return entry->direct == COMMUNITY_PERMIT; |
d62a17ae | 674 | } |
675 | } | |
88f1c947 | 676 | return false; |
8708b74f | 677 | } |
678 | ||
88f1c947 | 679 | bool lcommunity_list_match(struct lcommunity *lcom, struct community_list *list) |
57d187bc | 680 | { |
d62a17ae | 681 | struct community_entry *entry; |
682 | ||
683 | for (entry = list->head; entry; entry = entry->next) { | |
684 | if (entry->any) | |
88f1c947 | 685 | return entry->direct == COMMUNITY_PERMIT; |
d62a17ae | 686 | |
687 | if (entry->style == LARGE_COMMUNITY_LIST_STANDARD) { | |
688 | if (lcommunity_match(lcom, entry->u.lcom)) | |
88f1c947 | 689 | return entry->direct == COMMUNITY_PERMIT; |
d62a17ae | 690 | } else if (entry->style == LARGE_COMMUNITY_LIST_EXPANDED) { |
691 | if (lcommunity_regexp_match(lcom, entry->reg)) | |
88f1c947 | 692 | return entry->direct == COMMUNITY_PERMIT; |
d62a17ae | 693 | } |
694 | } | |
88f1c947 | 695 | return false; |
57d187bc JS |
696 | } |
697 | ||
f8463998 | 698 | |
699 | /* Perform exact matching. In case of expanded large-community-list, do | |
700 | * same thing as lcommunity_list_match(). | |
701 | */ | |
88f1c947 DA |
702 | bool lcommunity_list_exact_match(struct lcommunity *lcom, |
703 | struct community_list *list) | |
f8463998 | 704 | { |
705 | struct community_entry *entry; | |
706 | ||
707 | for (entry = list->head; entry; entry = entry->next) { | |
708 | if (entry->any) | |
88f1c947 | 709 | return entry->direct == COMMUNITY_PERMIT; |
f8463998 | 710 | |
711 | if (entry->style == LARGE_COMMUNITY_LIST_STANDARD) { | |
0d5b3cb9 | 712 | if (lcommunity_cmp(lcom, entry->u.lcom)) |
88f1c947 | 713 | return entry->direct == COMMUNITY_PERMIT; |
f8463998 | 714 | } else if (entry->style == LARGE_COMMUNITY_LIST_EXPANDED) { |
715 | if (lcommunity_regexp_match(lcom, entry->reg)) | |
88f1c947 | 716 | return entry->direct == COMMUNITY_PERMIT; |
f8463998 | 717 | } |
718 | } | |
88f1c947 | 719 | return false; |
f8463998 | 720 | } |
721 | ||
88f1c947 | 722 | bool ecommunity_list_match(struct ecommunity *ecom, struct community_list *list) |
8708b74f | 723 | { |
d62a17ae | 724 | struct community_entry *entry; |
725 | ||
726 | for (entry = list->head; entry; entry = entry->next) { | |
727 | if (entry->any) | |
88f1c947 | 728 | return entry->direct == COMMUNITY_PERMIT; |
d62a17ae | 729 | |
730 | if (entry->style == EXTCOMMUNITY_LIST_STANDARD) { | |
731 | if (ecommunity_match(ecom, entry->u.ecom)) | |
88f1c947 | 732 | return entry->direct == COMMUNITY_PERMIT; |
d62a17ae | 733 | } else if (entry->style == EXTCOMMUNITY_LIST_EXPANDED) { |
734 | if (ecommunity_regexp_match(ecom, entry->reg)) | |
88f1c947 | 735 | return entry->direct == COMMUNITY_PERMIT; |
d62a17ae | 736 | } |
737 | } | |
88f1c947 | 738 | return false; |
718e3744 | 739 | } |
740 | ||
741 | /* Perform exact matching. In case of expanded community-list, do | |
742 | same thing as community_list_match(). */ | |
88f1c947 DA |
743 | bool community_list_exact_match(struct community *com, |
744 | struct community_list *list) | |
718e3744 | 745 | { |
d62a17ae | 746 | struct community_entry *entry; |
747 | ||
748 | for (entry = list->head; entry; entry = entry->next) { | |
749 | if (entry->any) | |
88f1c947 | 750 | return entry->direct == COMMUNITY_PERMIT; |
d62a17ae | 751 | |
752 | if (entry->style == COMMUNITY_LIST_STANDARD) { | |
753 | if (community_include(entry->u.com, COMMUNITY_INTERNET)) | |
88f1c947 | 754 | return entry->direct == COMMUNITY_PERMIT; |
d62a17ae | 755 | |
756 | if (community_cmp(com, entry->u.com)) | |
88f1c947 | 757 | return entry->direct == COMMUNITY_PERMIT; |
d62a17ae | 758 | } else if (entry->style == COMMUNITY_LIST_EXPANDED) { |
759 | if (community_regexp_match(com, entry->reg)) | |
88f1c947 | 760 | return entry->direct == COMMUNITY_PERMIT; |
d62a17ae | 761 | } |
762 | } | |
88f1c947 | 763 | return false; |
718e3744 | 764 | } |
765 | ||
8708b74f | 766 | /* Delete all permitted communities in the list from com. */ |
d62a17ae | 767 | struct community *community_list_match_delete(struct community *com, |
768 | struct community_list *list) | |
718e3744 | 769 | { |
d62a17ae | 770 | struct community_entry *entry; |
d7c0a89a QY |
771 | uint32_t val; |
772 | uint32_t com_index_to_delete[com->size]; | |
d62a17ae | 773 | int delete_index = 0; |
774 | int i; | |
775 | ||
776 | /* Loop over each community value and evaluate each against the | |
777 | * community-list. If we need to delete a community value add its index | |
ceead39c | 778 | * to com_index_to_delete. |
d62a17ae | 779 | */ |
780 | for (i = 0; i < com->size; i++) { | |
781 | val = community_val_get(com, i); | |
782 | ||
783 | for (entry = list->head; entry; entry = entry->next) { | |
784 | if (entry->any) { | |
785 | if (entry->direct == COMMUNITY_PERMIT) { | |
786 | com_index_to_delete[delete_index] = i; | |
787 | delete_index++; | |
788 | } | |
789 | break; | |
790 | } | |
791 | ||
792 | else if ((entry->style == COMMUNITY_LIST_STANDARD) | |
793 | && (community_include(entry->u.com, | |
794 | COMMUNITY_INTERNET) | |
795 | || community_include(entry->u.com, val))) { | |
796 | if (entry->direct == COMMUNITY_PERMIT) { | |
797 | com_index_to_delete[delete_index] = i; | |
798 | delete_index++; | |
799 | } | |
800 | break; | |
801 | } | |
802 | ||
803 | else if ((entry->style == COMMUNITY_LIST_EXPANDED) | |
804 | && community_regexp_include(entry->reg, com, | |
805 | i)) { | |
806 | if (entry->direct == COMMUNITY_PERMIT) { | |
807 | com_index_to_delete[delete_index] = i; | |
808 | delete_index++; | |
809 | } | |
810 | break; | |
811 | } | |
812 | } | |
813 | } | |
5cbea288 | 814 | |
d62a17ae | 815 | /* Delete all of the communities we flagged for deletion */ |
816 | for (i = delete_index - 1; i >= 0; i--) { | |
817 | val = community_val_get(com, com_index_to_delete[i]); | |
0743b61d | 818 | val = htonl(val); |
d62a17ae | 819 | community_del_val(com, &val); |
820 | } | |
5cbea288 | 821 | |
d62a17ae | 822 | return com; |
718e3744 | 823 | } |
824 | ||
825 | /* To avoid duplicated entry in the community-list, this function | |
826 | compares specified entry to existing entry. */ | |
88f1c947 DA |
827 | static bool community_list_dup_check(struct community_list *list, |
828 | struct community_entry *new) | |
718e3744 | 829 | { |
d62a17ae | 830 | struct community_entry *entry; |
831 | ||
832 | for (entry = list->head; entry; entry = entry->next) { | |
833 | if (entry->style != new->style) | |
834 | continue; | |
835 | ||
836 | if (entry->direct != new->direct) | |
837 | continue; | |
838 | ||
839 | if (entry->any != new->any) | |
840 | continue; | |
841 | ||
842 | if (entry->any) | |
88f1c947 | 843 | return true; |
d62a17ae | 844 | |
845 | switch (entry->style) { | |
846 | case COMMUNITY_LIST_STANDARD: | |
847 | if (community_cmp(entry->u.com, new->u.com)) | |
88f1c947 | 848 | return true; |
d62a17ae | 849 | break; |
850 | case LARGE_COMMUNITY_LIST_STANDARD: | |
851 | if (lcommunity_cmp(entry->u.lcom, new->u.lcom)) | |
88f1c947 | 852 | return true; |
d62a17ae | 853 | break; |
854 | case EXTCOMMUNITY_LIST_STANDARD: | |
855 | if (ecommunity_cmp(entry->u.ecom, new->u.ecom)) | |
88f1c947 | 856 | return true; |
d62a17ae | 857 | break; |
858 | case COMMUNITY_LIST_EXPANDED: | |
859 | case EXTCOMMUNITY_LIST_EXPANDED: | |
860 | case LARGE_COMMUNITY_LIST_EXPANDED: | |
861 | if (strcmp(entry->config, new->config) == 0) | |
88f1c947 | 862 | return true; |
d62a17ae | 863 | break; |
864 | default: | |
865 | break; | |
866 | } | |
867 | } | |
88f1c947 | 868 | return false; |
718e3744 | 869 | } |
6b0655a2 | 870 | |
718e3744 | 871 | /* Set community-list. */ |
d62a17ae | 872 | int community_list_set(struct community_list_handler *ch, const char *name, |
2f8cc0e5 | 873 | const char *str, const char *seq, int direct, int style) |
718e3744 | 874 | { |
d62a17ae | 875 | struct community_entry *entry = NULL; |
876 | struct community_list *list; | |
877 | struct community *com = NULL; | |
878 | regex_t *regex = NULL; | |
2f8cc0e5 DA |
879 | int64_t seqnum = COMMUNITY_SEQ_NUMBER_AUTO; |
880 | ||
881 | if (seq) | |
882 | seqnum = (int64_t)atol(seq); | |
d62a17ae | 883 | |
884 | /* Get community list. */ | |
885 | list = community_list_get(ch, name, COMMUNITY_LIST_MASTER); | |
886 | ||
887 | /* When community-list already has entry, new entry should have same | |
888 | style. If you want to have mixed style community-list, you can | |
889 | comment out this check. */ | |
890 | if (!community_list_empty_p(list)) { | |
891 | struct community_entry *first; | |
892 | ||
893 | first = list->head; | |
894 | ||
895 | if (style != first->style) { | |
896 | return (first->style == COMMUNITY_LIST_STANDARD | |
897 | ? COMMUNITY_LIST_ERR_STANDARD_CONFLICT | |
898 | : COMMUNITY_LIST_ERR_EXPANDED_CONFLICT); | |
899 | } | |
fee6e4e4 | 900 | } |
718e3744 | 901 | |
d62a17ae | 902 | if (str) { |
903 | if (style == COMMUNITY_LIST_STANDARD) | |
904 | com = community_str2com(str); | |
905 | else | |
906 | regex = bgp_regcomp(str); | |
8708b74f | 907 | |
d62a17ae | 908 | if (!com && !regex) |
909 | return COMMUNITY_LIST_ERR_MALFORMED_VAL; | |
910 | } | |
718e3744 | 911 | |
d62a17ae | 912 | entry = community_entry_new(); |
913 | entry->direct = direct; | |
914 | entry->style = style; | |
d3f6c580 | 915 | entry->any = (str ? false : true); |
d62a17ae | 916 | entry->u.com = com; |
917 | entry->reg = regex; | |
2f8cc0e5 | 918 | entry->seq = seqnum; |
d62a17ae | 919 | entry->config = |
920 | (regex ? XSTRDUP(MTYPE_COMMUNITY_LIST_CONFIG, str) : NULL); | |
921 | ||
922 | /* Do not put duplicated community entry. */ | |
923 | if (community_list_dup_check(list, entry)) | |
924 | community_entry_free(entry); | |
925 | else { | |
2f8cc0e5 DA |
926 | community_list_entry_add(list, entry, ch, |
927 | COMMUNITY_LIST_MASTER); | |
d62a17ae | 928 | route_map_notify_dependencies(name, RMAP_EVENT_CLIST_ADDED); |
929 | } | |
718e3744 | 930 | |
d62a17ae | 931 | return 0; |
718e3744 | 932 | } |
933 | ||
813d4307 | 934 | /* Unset community-list */ |
d62a17ae | 935 | int community_list_unset(struct community_list_handler *ch, const char *name, |
2f8cc0e5 DA |
936 | const char *str, const char *seq, int direct, |
937 | int style) | |
718e3744 | 938 | { |
3571a6a2 | 939 | struct community_list_master *cm = NULL; |
d62a17ae | 940 | struct community_entry *entry = NULL; |
941 | struct community_list *list; | |
942 | struct community *com = NULL; | |
943 | ||
944 | /* Lookup community list. */ | |
e237b0d2 | 945 | list = community_list_lookup(ch, name, 0, COMMUNITY_LIST_MASTER); |
d62a17ae | 946 | if (list == NULL) |
947 | return COMMUNITY_LIST_ERR_CANT_FIND_LIST; | |
948 | ||
3571a6a2 | 949 | cm = community_list_master_lookup(ch, COMMUNITY_LIST_MASTER); |
d62a17ae | 950 | /* Delete all of entry belongs to this community-list. */ |
7298a8e1 | 951 | if (!str) { |
3571a6a2 | 952 | community_list_delete(cm, list); |
d62a17ae | 953 | route_map_notify_dependencies(name, RMAP_EVENT_CLIST_DELETED); |
954 | return 0; | |
955 | } | |
718e3744 | 956 | |
7298a8e1 QY |
957 | if (style == COMMUNITY_LIST_STANDARD) |
958 | com = community_str2com(str); | |
718e3744 | 959 | |
d62a17ae | 960 | if (com) { |
961 | entry = community_list_entry_lookup(list, com, direct); | |
3c1f53de | 962 | community_free(&com); |
d62a17ae | 963 | } else |
964 | entry = community_list_entry_lookup(list, str, direct); | |
fee6e4e4 | 965 | |
d62a17ae | 966 | if (!entry) |
967 | return COMMUNITY_LIST_ERR_CANT_FIND_LIST; | |
718e3744 | 968 | |
3571a6a2 | 969 | community_list_entry_delete(cm, list, entry); |
d62a17ae | 970 | route_map_notify_dependencies(name, RMAP_EVENT_CLIST_DELETED); |
718e3744 | 971 | |
d62a17ae | 972 | return 0; |
718e3744 | 973 | } |
974 | ||
57d187bc | 975 | /* Delete all permitted large communities in the list from com. */ |
d62a17ae | 976 | struct lcommunity *lcommunity_list_match_delete(struct lcommunity *lcom, |
977 | struct community_list *list) | |
57d187bc | 978 | { |
d62a17ae | 979 | struct community_entry *entry; |
d7c0a89a QY |
980 | uint32_t com_index_to_delete[lcom->size]; |
981 | uint8_t *ptr; | |
d62a17ae | 982 | int delete_index = 0; |
983 | int i; | |
984 | ||
985 | /* Loop over each lcommunity value and evaluate each against the | |
986 | * community-list. If we need to delete a community value add its index | |
ceead39c | 987 | * to com_index_to_delete. |
d62a17ae | 988 | */ |
d62a17ae | 989 | for (i = 0; i < lcom->size; i++) { |
534fc195 | 990 | ptr = lcom->val + (i * LCOMMUNITY_SIZE); |
d62a17ae | 991 | for (entry = list->head; entry; entry = entry->next) { |
992 | if (entry->any) { | |
993 | if (entry->direct == COMMUNITY_PERMIT) { | |
994 | com_index_to_delete[delete_index] = i; | |
995 | delete_index++; | |
996 | } | |
997 | break; | |
998 | } | |
999 | ||
1000 | else if ((entry->style == LARGE_COMMUNITY_LIST_STANDARD) | |
1001 | && lcommunity_include(entry->u.lcom, ptr)) { | |
1002 | if (entry->direct == COMMUNITY_PERMIT) { | |
1003 | com_index_to_delete[delete_index] = i; | |
1004 | delete_index++; | |
1005 | } | |
1006 | break; | |
1007 | } | |
1008 | ||
cde8d696 | 1009 | else if ((entry->style == LARGE_COMMUNITY_LIST_EXPANDED) |
d62a17ae | 1010 | && lcommunity_regexp_include(entry->reg, lcom, |
1011 | i)) { | |
1012 | if (entry->direct == COMMUNITY_PERMIT) { | |
1013 | com_index_to_delete[delete_index] = i; | |
1014 | delete_index++; | |
1015 | } | |
1016 | break; | |
1017 | } | |
1018 | } | |
1019 | } | |
57d187bc | 1020 | |
d62a17ae | 1021 | /* Delete all of the communities we flagged for deletion */ |
d62a17ae | 1022 | for (i = delete_index - 1; i >= 0; i--) { |
0a7dce9b | 1023 | ptr = lcom->val + (com_index_to_delete[i] * LCOMMUNITY_SIZE); |
d62a17ae | 1024 | lcommunity_del_val(lcom, ptr); |
1025 | } | |
57d187bc | 1026 | |
d62a17ae | 1027 | return lcom; |
57d187bc JS |
1028 | } |
1029 | ||
5bd66e2d | 1030 | /* Helper to check if every octet do not exceed UINT_MAX */ |
c850908b | 1031 | bool lcommunity_list_valid(const char *community, int style) |
5bd66e2d | 1032 | { |
bc2c9ae6 DA |
1033 | int octets; |
1034 | char **splits, **communities; | |
c850908b | 1035 | char *endptr; |
bc2c9ae6 | 1036 | int num, num_communities; |
c850908b WC |
1037 | regex_t *regres; |
1038 | int invalid = 0; | |
5bd66e2d | 1039 | |
bc2c9ae6 | 1040 | frrstr_split(community, " ", &communities, &num_communities); |
5bd66e2d | 1041 | |
bc2c9ae6 DA |
1042 | for (int j = 0; j < num_communities; j++) { |
1043 | octets = 0; | |
1044 | frrstr_split(communities[j], ":", &splits, &num); | |
1045 | ||
1046 | for (int i = 0; i < num; i++) { | |
bc2c9ae6 | 1047 | if (strlen(splits[i]) == 0) |
c850908b WC |
1048 | /* There is no digit to check */ |
1049 | invalid++; | |
1050 | ||
1051 | if (style == LARGE_COMMUNITY_LIST_STANDARD) { | |
1052 | if (*splits[i] == '-') | |
1053 | /* Must not be negative */ | |
1054 | invalid++; | |
1055 | else if (strtoul(splits[i], &endptr, 10) | |
1056 | > UINT_MAX) | |
1057 | /* Larger than 4 octets */ | |
1058 | invalid++; | |
1059 | else if (*endptr) | |
1060 | /* Not all characters were digits */ | |
1061 | invalid++; | |
1062 | } else { | |
1063 | regres = bgp_regcomp(communities[j]); | |
1064 | if (!regres) | |
1065 | /* malformed regex */ | |
1066 | invalid++; | |
1067 | else | |
1068 | bgp_regex_free(regres); | |
1069 | } | |
bc2c9ae6 DA |
1070 | |
1071 | octets++; | |
1072 | XFREE(MTYPE_TMP, splits[i]); | |
1073 | } | |
1074 | XFREE(MTYPE_TMP, splits); | |
1075 | ||
c850908b WC |
1076 | if (octets != 3) |
1077 | invalid++; | |
5bd66e2d | 1078 | |
bc2c9ae6 | 1079 | XFREE(MTYPE_TMP, communities[j]); |
5bd66e2d | 1080 | } |
bc2c9ae6 | 1081 | XFREE(MTYPE_TMP, communities); |
5bd66e2d | 1082 | |
c850908b | 1083 | return (invalid > 0) ? false : true; |
5bd66e2d DA |
1084 | } |
1085 | ||
57d187bc | 1086 | /* Set lcommunity-list. */ |
d62a17ae | 1087 | int lcommunity_list_set(struct community_list_handler *ch, const char *name, |
2f8cc0e5 | 1088 | const char *str, const char *seq, int direct, int style) |
57d187bc | 1089 | { |
d62a17ae | 1090 | struct community_entry *entry = NULL; |
1091 | struct community_list *list; | |
1092 | struct lcommunity *lcom = NULL; | |
1093 | regex_t *regex = NULL; | |
2f8cc0e5 DA |
1094 | int64_t seqnum = COMMUNITY_SEQ_NUMBER_AUTO; |
1095 | ||
1096 | if (seq) | |
1097 | seqnum = (int64_t)atol(seq); | |
d62a17ae | 1098 | |
1099 | /* Get community list. */ | |
1100 | list = community_list_get(ch, name, LARGE_COMMUNITY_LIST_MASTER); | |
1101 | ||
1102 | /* When community-list already has entry, new entry should have same | |
1103 | style. If you want to have mixed style community-list, you can | |
1104 | comment out this check. */ | |
1105 | if (!community_list_empty_p(list)) { | |
1106 | struct community_entry *first; | |
1107 | ||
1108 | first = list->head; | |
1109 | ||
1110 | if (style != first->style) { | |
1111 | return (first->style == COMMUNITY_LIST_STANDARD | |
1112 | ? COMMUNITY_LIST_ERR_STANDARD_CONFLICT | |
1113 | : COMMUNITY_LIST_ERR_EXPANDED_CONFLICT); | |
1114 | } | |
1115 | } | |
57d187bc | 1116 | |
d62a17ae | 1117 | if (str) { |
1118 | if (style == LARGE_COMMUNITY_LIST_STANDARD) | |
1119 | lcom = lcommunity_str2com(str); | |
1120 | else | |
1121 | regex = bgp_regcomp(str); | |
57d187bc | 1122 | |
d62a17ae | 1123 | if (!lcom && !regex) |
1124 | return COMMUNITY_LIST_ERR_MALFORMED_VAL; | |
1125 | } | |
57d187bc | 1126 | |
d62a17ae | 1127 | entry = community_entry_new(); |
1128 | entry->direct = direct; | |
1129 | entry->style = style; | |
d3f6c580 | 1130 | entry->any = (str ? false : true); |
d62a17ae | 1131 | entry->u.lcom = lcom; |
1132 | entry->reg = regex; | |
2f8cc0e5 | 1133 | entry->seq = seqnum; |
8d9b8ed9 PM |
1134 | entry->config = |
1135 | (regex ? XSTRDUP(MTYPE_COMMUNITY_LIST_CONFIG, str) : NULL); | |
d62a17ae | 1136 | |
1137 | /* Do not put duplicated community entry. */ | |
1138 | if (community_list_dup_check(list, entry)) | |
1139 | community_entry_free(entry); | |
35f6f850 | 1140 | else { |
2f8cc0e5 DA |
1141 | community_list_entry_add(list, entry, ch, |
1142 | LARGE_COMMUNITY_LIST_MASTER); | |
35f6f850 | 1143 | route_map_notify_dependencies(name, RMAP_EVENT_LLIST_ADDED); |
1144 | } | |
d62a17ae | 1145 | |
1146 | return 0; | |
57d187bc JS |
1147 | } |
1148 | ||
1149 | /* Unset community-list. When str is NULL, delete all of | |
1150 | community-list entry belongs to the specified name. */ | |
d62a17ae | 1151 | int lcommunity_list_unset(struct community_list_handler *ch, const char *name, |
2f8cc0e5 DA |
1152 | const char *str, const char *seq, int direct, |
1153 | int style) | |
57d187bc | 1154 | { |
3571a6a2 | 1155 | struct community_list_master *cm = NULL; |
d62a17ae | 1156 | struct community_entry *entry = NULL; |
1157 | struct community_list *list; | |
1158 | struct lcommunity *lcom = NULL; | |
1159 | regex_t *regex = NULL; | |
1160 | ||
1161 | /* Lookup community list. */ | |
e237b0d2 | 1162 | list = community_list_lookup(ch, name, 0, LARGE_COMMUNITY_LIST_MASTER); |
d62a17ae | 1163 | if (list == NULL) |
1164 | return COMMUNITY_LIST_ERR_CANT_FIND_LIST; | |
1165 | ||
3571a6a2 | 1166 | cm = community_list_master_lookup(ch, LARGE_COMMUNITY_LIST_MASTER); |
d62a17ae | 1167 | /* Delete all of entry belongs to this community-list. */ |
1168 | if (!str) { | |
3571a6a2 | 1169 | community_list_delete(cm, list); |
35f6f850 | 1170 | route_map_notify_dependencies(name, RMAP_EVENT_LLIST_DELETED); |
d62a17ae | 1171 | return 0; |
1172 | } | |
57d187bc | 1173 | |
d62a17ae | 1174 | if (style == LARGE_COMMUNITY_LIST_STANDARD) |
1175 | lcom = lcommunity_str2com(str); | |
1176 | else | |
1177 | regex = bgp_regcomp(str); | |
57d187bc | 1178 | |
d62a17ae | 1179 | if (!lcom && !regex) |
1180 | return COMMUNITY_LIST_ERR_MALFORMED_VAL; | |
57d187bc | 1181 | |
d62a17ae | 1182 | if (lcom) |
1183 | entry = community_list_entry_lookup(list, lcom, direct); | |
1184 | else | |
1185 | entry = community_list_entry_lookup(list, str, direct); | |
57d187bc | 1186 | |
d62a17ae | 1187 | if (lcom) |
1188 | lcommunity_free(&lcom); | |
1189 | if (regex) | |
1190 | bgp_regex_free(regex); | |
57d187bc | 1191 | |
d62a17ae | 1192 | if (!entry) |
1193 | return COMMUNITY_LIST_ERR_CANT_FIND_LIST; | |
57d187bc | 1194 | |
3571a6a2 | 1195 | community_list_entry_delete(cm, list, entry); |
35f6f850 | 1196 | route_map_notify_dependencies(name, RMAP_EVENT_LLIST_DELETED); |
57d187bc | 1197 | |
d62a17ae | 1198 | return 0; |
57d187bc JS |
1199 | } |
1200 | ||
718e3744 | 1201 | /* Set extcommunity-list. */ |
d62a17ae | 1202 | int extcommunity_list_set(struct community_list_handler *ch, const char *name, |
2f8cc0e5 DA |
1203 | const char *str, const char *seq, int direct, |
1204 | int style) | |
718e3744 | 1205 | { |
d62a17ae | 1206 | struct community_entry *entry = NULL; |
1207 | struct community_list *list; | |
1208 | struct ecommunity *ecom = NULL; | |
1209 | regex_t *regex = NULL; | |
2f8cc0e5 DA |
1210 | int64_t seqnum = COMMUNITY_SEQ_NUMBER_AUTO; |
1211 | ||
1212 | if (seq) | |
1213 | seqnum = (int64_t)atol(seq); | |
718e3744 | 1214 | |
fa301630 | 1215 | if (str == NULL) |
1216 | return COMMUNITY_LIST_ERR_MALFORMED_VAL; | |
1217 | ||
d62a17ae | 1218 | /* Get community list. */ |
1219 | list = community_list_get(ch, name, EXTCOMMUNITY_LIST_MASTER); | |
718e3744 | 1220 | |
d62a17ae | 1221 | /* When community-list already has entry, new entry should have same |
1222 | style. If you want to have mixed style community-list, you can | |
1223 | comment out this check. */ | |
1224 | if (!community_list_empty_p(list)) { | |
1225 | struct community_entry *first; | |
718e3744 | 1226 | |
d62a17ae | 1227 | first = list->head; |
718e3744 | 1228 | |
d62a17ae | 1229 | if (style != first->style) { |
1230 | return (first->style == EXTCOMMUNITY_LIST_STANDARD | |
1231 | ? COMMUNITY_LIST_ERR_STANDARD_CONFLICT | |
1232 | : COMMUNITY_LIST_ERR_EXPANDED_CONFLICT); | |
1233 | } | |
fee6e4e4 | 1234 | } |
718e3744 | 1235 | |
d62a17ae | 1236 | if (style == EXTCOMMUNITY_LIST_STANDARD) |
1237 | ecom = ecommunity_str2com(str, 0, 1); | |
1238 | else | |
1239 | regex = bgp_regcomp(str); | |
1240 | ||
1241 | if (!ecom && !regex) | |
1242 | return COMMUNITY_LIST_ERR_MALFORMED_VAL; | |
1243 | ||
1244 | if (ecom) | |
1245 | ecom->str = | |
1246 | ecommunity_ecom2str(ecom, ECOMMUNITY_FORMAT_DISPLAY, 0); | |
1247 | ||
1248 | entry = community_entry_new(); | |
1249 | entry->direct = direct; | |
1250 | entry->style = style; | |
d3f6c580 | 1251 | entry->any = false; |
d62a17ae | 1252 | if (ecom) |
1253 | entry->config = ecommunity_ecom2str( | |
1254 | ecom, ECOMMUNITY_FORMAT_COMMUNITY_LIST, 0); | |
1255 | else if (regex) | |
1256 | entry->config = XSTRDUP(MTYPE_COMMUNITY_LIST_CONFIG, str); | |
1257 | ||
1258 | entry->u.ecom = ecom; | |
1259 | entry->reg = regex; | |
2f8cc0e5 | 1260 | entry->seq = seqnum; |
d62a17ae | 1261 | |
1262 | /* Do not put duplicated community entry. */ | |
1263 | if (community_list_dup_check(list, entry)) | |
1264 | community_entry_free(entry); | |
1265 | else { | |
2f8cc0e5 DA |
1266 | community_list_entry_add(list, entry, ch, |
1267 | EXTCOMMUNITY_LIST_MASTER); | |
d62a17ae | 1268 | route_map_notify_dependencies(name, RMAP_EVENT_ECLIST_ADDED); |
1269 | } | |
718e3744 | 1270 | |
d62a17ae | 1271 | return 0; |
718e3744 | 1272 | } |
1273 | ||
7298a8e1 QY |
1274 | /* Unset extcommunity-list. |
1275 | * | |
1276 | * When str is NULL, delete all extcommunity-list entries belonging to the | |
1277 | * specified name. | |
1278 | */ | |
d62a17ae | 1279 | int extcommunity_list_unset(struct community_list_handler *ch, const char *name, |
2f8cc0e5 DA |
1280 | const char *str, const char *seq, int direct, |
1281 | int style) | |
718e3744 | 1282 | { |
3571a6a2 | 1283 | struct community_list_master *cm = NULL; |
d62a17ae | 1284 | struct community_entry *entry = NULL; |
1285 | struct community_list *list; | |
1286 | struct ecommunity *ecom = NULL; | |
1287 | ||
1288 | /* Lookup extcommunity list. */ | |
e237b0d2 | 1289 | list = community_list_lookup(ch, name, 0, EXTCOMMUNITY_LIST_MASTER); |
d62a17ae | 1290 | if (list == NULL) |
1291 | return COMMUNITY_LIST_ERR_CANT_FIND_LIST; | |
1292 | ||
3571a6a2 | 1293 | cm = community_list_master_lookup(ch, EXTCOMMUNITY_LIST_MASTER); |
d62a17ae | 1294 | /* Delete all of entry belongs to this extcommunity-list. */ |
7298a8e1 | 1295 | if (!str) { |
3571a6a2 | 1296 | community_list_delete(cm, list); |
d62a17ae | 1297 | route_map_notify_dependencies(name, RMAP_EVENT_ECLIST_DELETED); |
1298 | return 0; | |
1299 | } | |
718e3744 | 1300 | |
7298a8e1 QY |
1301 | if (style == EXTCOMMUNITY_LIST_STANDARD) |
1302 | ecom = ecommunity_str2com(str, 0, 1); | |
718e3744 | 1303 | |
d62a17ae | 1304 | if (ecom) { |
1305 | entry = community_list_entry_lookup(list, ecom, direct); | |
1306 | ecommunity_free(&ecom); | |
1307 | } else | |
1308 | entry = community_list_entry_lookup(list, str, direct); | |
fee6e4e4 | 1309 | |
d62a17ae | 1310 | if (!entry) |
1311 | return COMMUNITY_LIST_ERR_CANT_FIND_LIST; | |
718e3744 | 1312 | |
3571a6a2 | 1313 | community_list_entry_delete(cm, list, entry); |
d62a17ae | 1314 | route_map_notify_dependencies(name, RMAP_EVENT_ECLIST_DELETED); |
718e3744 | 1315 | |
d62a17ae | 1316 | return 0; |
718e3744 | 1317 | } |
1318 | ||
1319 | /* Initializa community-list. Return community-list handler. */ | |
d62a17ae | 1320 | struct community_list_handler *community_list_init(void) |
718e3744 | 1321 | { |
d62a17ae | 1322 | struct community_list_handler *ch; |
1323 | ch = XCALLOC(MTYPE_COMMUNITY_LIST_HANDLER, | |
1324 | sizeof(struct community_list_handler)); | |
3571a6a2 DS |
1325 | |
1326 | ch->community_list.hash = | |
1327 | hash_create_size(4, bgp_clist_hash_key_community_list, | |
1328 | bgp_clist_hash_cmp_community_list, | |
1329 | "Community List Number Quick Lookup"); | |
1330 | ||
1331 | ch->extcommunity_list.hash = | |
1332 | hash_create_size(4, bgp_clist_hash_key_community_list, | |
1333 | bgp_clist_hash_cmp_community_list, | |
1334 | "Extended Community List Quick Lookup"); | |
1335 | ||
1336 | ch->lcommunity_list.hash = | |
1337 | hash_create_size(4, bgp_clist_hash_key_community_list, | |
1338 | bgp_clist_hash_cmp_community_list, | |
1339 | "Large Community List Quick Lookup"); | |
1340 | ||
d62a17ae | 1341 | return ch; |
718e3744 | 1342 | } |
1343 | ||
1344 | /* Terminate community-list. */ | |
d62a17ae | 1345 | void community_list_terminate(struct community_list_handler *ch) |
718e3744 | 1346 | { |
d62a17ae | 1347 | struct community_list_master *cm; |
1348 | struct community_list *list; | |
1349 | ||
1350 | cm = &ch->community_list; | |
1351 | while ((list = cm->num.head) != NULL) | |
3571a6a2 | 1352 | community_list_delete(cm, list); |
d62a17ae | 1353 | while ((list = cm->str.head) != NULL) |
3571a6a2 DS |
1354 | community_list_delete(cm, list); |
1355 | hash_free(cm->hash); | |
d62a17ae | 1356 | |
1357 | cm = &ch->lcommunity_list; | |
1358 | while ((list = cm->num.head) != NULL) | |
3571a6a2 | 1359 | community_list_delete(cm, list); |
d62a17ae | 1360 | while ((list = cm->str.head) != NULL) |
3571a6a2 DS |
1361 | community_list_delete(cm, list); |
1362 | hash_free(cm->hash); | |
d62a17ae | 1363 | |
1364 | cm = &ch->extcommunity_list; | |
1365 | while ((list = cm->num.head) != NULL) | |
3571a6a2 | 1366 | community_list_delete(cm, list); |
d62a17ae | 1367 | while ((list = cm->str.head) != NULL) |
3571a6a2 DS |
1368 | community_list_delete(cm, list); |
1369 | hash_free(cm->hash); | |
d62a17ae | 1370 | |
1371 | XFREE(MTYPE_COMMUNITY_LIST_HANDLER, ch); | |
718e3744 | 1372 | } |
225096bc DA |
1373 | |
1374 | static int bgp_community_list_vector_walker(struct hash_bucket *bucket, | |
1375 | void *data) | |
1376 | { | |
1377 | vector *comps = data; | |
1378 | struct community_list *list = bucket->data; | |
1379 | ||
1380 | vector_set(*comps, XSTRDUP(MTYPE_COMPLETION, list->name)); | |
1381 | ||
1382 | return 1; | |
1383 | } | |
1384 | ||
1385 | static void bgp_community_list_cmd_completion(vector comps, | |
1386 | struct cmd_token *token) | |
1387 | { | |
1388 | struct community_list_master *cm; | |
1389 | ||
1390 | cm = community_list_master_lookup(bgp_clist, COMMUNITY_LIST_MASTER); | |
1391 | ||
1392 | hash_walk(cm->hash, bgp_community_list_vector_walker, &comps); | |
1393 | } | |
1394 | ||
1395 | static void bgp_lcommunity_list_cmd_completion(vector comps, | |
1396 | struct cmd_token *token) | |
1397 | { | |
1398 | struct community_list_master *cm; | |
1399 | ||
1400 | cm = community_list_master_lookup(bgp_clist, | |
1401 | LARGE_COMMUNITY_LIST_MASTER); | |
1402 | ||
1403 | hash_walk(cm->hash, bgp_community_list_vector_walker, &comps); | |
1404 | } | |
1405 | ||
1406 | static void bgp_extcommunity_list_cmd_completion(vector comps, | |
1407 | struct cmd_token *token) | |
1408 | { | |
1409 | struct community_list_master *cm; | |
1410 | ||
1411 | cm = community_list_master_lookup(bgp_clist, EXTCOMMUNITY_LIST_MASTER); | |
1412 | ||
1413 | hash_walk(cm->hash, bgp_community_list_vector_walker, &comps); | |
1414 | } | |
1415 | ||
1416 | static const struct cmd_variable_handler community_list_handlers[] = { | |
1417 | {.tokenname = "COMMUNITY_LIST_NAME", | |
1418 | .completions = bgp_community_list_cmd_completion}, | |
1419 | {.completions = NULL}}; | |
1420 | ||
1421 | static const struct cmd_variable_handler lcommunity_list_handlers[] = { | |
1422 | {.tokenname = "LCOMMUNITY_LIST_NAME", | |
1423 | .completions = bgp_lcommunity_list_cmd_completion}, | |
1424 | {.completions = NULL}}; | |
1425 | ||
1426 | static const struct cmd_variable_handler extcommunity_list_handlers[] = { | |
1427 | {.tokenname = "EXTCOMMUNITY_LIST_NAME", | |
1428 | .completions = bgp_extcommunity_list_cmd_completion}, | |
1429 | {.completions = NULL}}; | |
1430 | ||
1431 | void bgp_community_list_command_completion_setup(void) | |
1432 | { | |
1433 | cmd_variable_handler_register(community_list_handlers); | |
1434 | cmd_variable_handler_register(lcommunity_list_handlers); | |
1435 | cmd_variable_handler_register(extcommunity_list_handlers); | |
1436 | } |