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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" |
653eab61 | 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 | |
3571a6a2 DS |
40 | static uint32_t bgp_clist_hash_key_community_list(void *data) |
41 | { | |
42 | struct community_list *cl = data; | |
43 | ||
e237b0d2 DS |
44 | if (cl->name_hash) |
45 | return cl->name_hash; | |
46 | ||
47 | cl->name_hash = bgp_clist_hash_key(cl->name); | |
48 | return cl->name_hash; | |
3571a6a2 DS |
49 | } |
50 | ||
51 | static bool bgp_clist_hash_cmp_community_list(const void *a1, const void *a2) | |
52 | { | |
53 | const struct community_list *cl1 = a1; | |
54 | const struct community_list *cl2 = a2; | |
55 | ||
e237b0d2 DS |
56 | if (cl1->name_hash != cl2->name_hash) |
57 | return false; | |
58 | ||
3571a6a2 DS |
59 | if (strcmp(cl1->name, cl2->name) == 0) |
60 | return true; | |
61 | ||
62 | return false; | |
63 | } | |
64 | ||
718e3744 | 65 | /* Lookup master structure for community-list or |
66 | extcommunity-list. */ | |
67 | struct community_list_master * | |
d62a17ae | 68 | community_list_master_lookup(struct community_list_handler *ch, int master) |
718e3744 | 69 | { |
d62a17ae | 70 | if (ch) |
71 | switch (master) { | |
72 | case COMMUNITY_LIST_MASTER: | |
73 | return &ch->community_list; | |
74 | case EXTCOMMUNITY_LIST_MASTER: | |
75 | return &ch->extcommunity_list; | |
76 | case LARGE_COMMUNITY_LIST_MASTER: | |
77 | return &ch->lcommunity_list; | |
78 | } | |
79 | return NULL; | |
718e3744 | 80 | } |
81 | ||
82 | /* Allocate a new community list entry. */ | |
d62a17ae | 83 | static struct community_entry *community_entry_new(void) |
718e3744 | 84 | { |
d62a17ae | 85 | return XCALLOC(MTYPE_COMMUNITY_LIST_ENTRY, |
86 | sizeof(struct community_entry)); | |
718e3744 | 87 | } |
88 | ||
89 | /* Free community list entry. */ | |
d62a17ae | 90 | static void community_entry_free(struct community_entry *entry) |
718e3744 | 91 | { |
d62a17ae | 92 | switch (entry->style) { |
93 | case COMMUNITY_LIST_STANDARD: | |
94 | if (entry->u.com) | |
3c1f53de | 95 | community_free(&entry->u.com); |
d62a17ae | 96 | break; |
97 | case LARGE_COMMUNITY_LIST_STANDARD: | |
98 | if (entry->u.lcom) | |
99 | lcommunity_free(&entry->u.lcom); | |
100 | break; | |
101 | case EXTCOMMUNITY_LIST_STANDARD: | |
102 | /* In case of standard extcommunity-list, configuration string | |
103 | is made by ecommunity_ecom2str(). */ | |
0a22ddfb | 104 | XFREE(MTYPE_ECOMMUNITY_STR, entry->config); |
d62a17ae | 105 | if (entry->u.ecom) |
106 | ecommunity_free(&entry->u.ecom); | |
107 | break; | |
108 | case COMMUNITY_LIST_EXPANDED: | |
109 | case EXTCOMMUNITY_LIST_EXPANDED: | |
110 | case LARGE_COMMUNITY_LIST_EXPANDED: | |
0a22ddfb | 111 | XFREE(MTYPE_COMMUNITY_LIST_CONFIG, entry->config); |
d62a17ae | 112 | if (entry->reg) |
113 | bgp_regex_free(entry->reg); | |
114 | default: | |
115 | break; | |
116 | } | |
117 | XFREE(MTYPE_COMMUNITY_LIST_ENTRY, entry); | |
718e3744 | 118 | } |
119 | ||
120 | /* Allocate a new community-list. */ | |
d62a17ae | 121 | static struct community_list *community_list_new(void) |
718e3744 | 122 | { |
d62a17ae | 123 | return XCALLOC(MTYPE_COMMUNITY_LIST, sizeof(struct community_list)); |
718e3744 | 124 | } |
125 | ||
126 | /* Free community-list. */ | |
d62a17ae | 127 | static void community_list_free(struct community_list *list) |
718e3744 | 128 | { |
0a22ddfb | 129 | XFREE(MTYPE_COMMUNITY_LIST_NAME, list->name); |
d62a17ae | 130 | XFREE(MTYPE_COMMUNITY_LIST, list); |
718e3744 | 131 | } |
132 | ||
94f2b392 | 133 | static struct community_list * |
d62a17ae | 134 | community_list_insert(struct community_list_handler *ch, const char *name, |
135 | int master) | |
718e3744 | 136 | { |
d62a17ae | 137 | size_t i; |
138 | long number; | |
139 | struct community_list *new; | |
140 | struct community_list *point; | |
141 | struct community_list_list *list; | |
142 | struct community_list_master *cm; | |
143 | ||
144 | /* Lookup community-list master. */ | |
145 | cm = community_list_master_lookup(ch, master); | |
146 | if (!cm) | |
147 | return NULL; | |
148 | ||
149 | /* Allocate new community_list and copy given name. */ | |
150 | new = community_list_new(); | |
151 | new->name = XSTRDUP(MTYPE_COMMUNITY_LIST_NAME, name); | |
e237b0d2 | 152 | new->name_hash = bgp_clist_hash_key_community_list(new); |
d62a17ae | 153 | |
3571a6a2 DS |
154 | /* Save for later */ |
155 | hash_get(cm->hash, new, hash_alloc_intern); | |
156 | ||
d62a17ae | 157 | /* If name is made by all digit character. We treat it as |
158 | number. */ | |
159 | for (number = 0, i = 0; i < strlen(name); i++) { | |
160 | if (isdigit((int)name[i])) | |
161 | number = (number * 10) + (name[i] - '0'); | |
162 | else | |
163 | break; | |
164 | } | |
718e3744 | 165 | |
d62a17ae | 166 | /* In case of name is all digit character */ |
167 | if (i == strlen(name)) { | |
168 | new->sort = COMMUNITY_LIST_NUMBER; | |
718e3744 | 169 | |
d62a17ae | 170 | /* Set access_list to number list. */ |
171 | list = &cm->num; | |
718e3744 | 172 | |
d62a17ae | 173 | for (point = list->head; point; point = point->next) |
174 | if (atol(point->name) >= number) | |
175 | break; | |
176 | } else { | |
177 | new->sort = COMMUNITY_LIST_STRING; | |
718e3744 | 178 | |
d62a17ae | 179 | /* Set access_list to string list. */ |
180 | list = &cm->str; | |
718e3744 | 181 | |
d62a17ae | 182 | /* Set point to insertion point. */ |
183 | for (point = list->head; point; point = point->next) | |
184 | if (strcmp(point->name, name) >= 0) | |
185 | break; | |
186 | } | |
718e3744 | 187 | |
d62a17ae | 188 | /* Link to upper list. */ |
189 | new->parent = list; | |
718e3744 | 190 | |
d62a17ae | 191 | /* In case of this is the first element of master. */ |
192 | if (list->head == NULL) { | |
193 | list->head = list->tail = new; | |
194 | return new; | |
195 | } | |
718e3744 | 196 | |
d62a17ae | 197 | /* In case of insertion is made at the tail of access_list. */ |
198 | if (point == NULL) { | |
199 | new->prev = list->tail; | |
200 | list->tail->next = new; | |
201 | list->tail = new; | |
202 | return new; | |
203 | } | |
718e3744 | 204 | |
d62a17ae | 205 | /* In case of insertion is made at the head of access_list. */ |
206 | if (point == list->head) { | |
207 | new->next = list->head; | |
208 | list->head->prev = new; | |
209 | list->head = new; | |
210 | return new; | |
211 | } | |
718e3744 | 212 | |
d62a17ae | 213 | /* Insertion is made at middle of the access_list. */ |
214 | new->next = point; | |
215 | new->prev = point->prev; | |
718e3744 | 216 | |
d62a17ae | 217 | if (point->prev) |
218 | point->prev->next = new; | |
219 | point->prev = new; | |
718e3744 | 220 | |
d62a17ae | 221 | return new; |
718e3744 | 222 | } |
223 | ||
d62a17ae | 224 | struct community_list *community_list_lookup(struct community_list_handler *ch, |
e237b0d2 DS |
225 | const char *name, |
226 | uint32_t name_hash, | |
227 | int master) | |
718e3744 | 228 | { |
3571a6a2 | 229 | struct community_list lookup; |
d62a17ae | 230 | struct community_list_master *cm; |
718e3744 | 231 | |
d62a17ae | 232 | if (!name) |
233 | return NULL; | |
718e3744 | 234 | |
d62a17ae | 235 | cm = community_list_master_lookup(ch, master); |
236 | if (!cm) | |
237 | return NULL; | |
718e3744 | 238 | |
3571a6a2 | 239 | lookup.name = (char *)name; |
e237b0d2 | 240 | lookup.name_hash = name_hash; |
3571a6a2 | 241 | return hash_get(cm->hash, &lookup, NULL); |
718e3744 | 242 | } |
243 | ||
94f2b392 | 244 | static struct community_list * |
d62a17ae | 245 | community_list_get(struct community_list_handler *ch, const char *name, |
246 | int master) | |
718e3744 | 247 | { |
d62a17ae | 248 | struct community_list *list; |
718e3744 | 249 | |
e237b0d2 | 250 | list = community_list_lookup(ch, name, 0, master); |
d62a17ae | 251 | if (!list) |
252 | list = community_list_insert(ch, name, master); | |
253 | return list; | |
718e3744 | 254 | } |
255 | ||
3571a6a2 DS |
256 | static void community_list_delete(struct community_list_master *cm, |
257 | struct community_list *list) | |
718e3744 | 258 | { |
d62a17ae | 259 | struct community_list_list *clist; |
260 | struct community_entry *entry, *next; | |
718e3744 | 261 | |
d62a17ae | 262 | for (entry = list->head; entry; entry = next) { |
263 | next = entry->next; | |
264 | community_entry_free(entry); | |
265 | } | |
718e3744 | 266 | |
d62a17ae | 267 | clist = list->parent; |
718e3744 | 268 | |
d62a17ae | 269 | if (list->next) |
270 | list->next->prev = list->prev; | |
271 | else | |
272 | clist->tail = list->prev; | |
718e3744 | 273 | |
d62a17ae | 274 | if (list->prev) |
275 | list->prev->next = list->next; | |
276 | else | |
277 | clist->head = list->next; | |
718e3744 | 278 | |
3571a6a2 | 279 | hash_release(cm->hash, list); |
d62a17ae | 280 | community_list_free(list); |
718e3744 | 281 | } |
282 | ||
d62a17ae | 283 | static int community_list_empty_p(struct community_list *list) |
718e3744 | 284 | { |
d62a17ae | 285 | return (list->head == NULL && list->tail == NULL) ? 1 : 0; |
718e3744 | 286 | } |
6b0655a2 | 287 | |
718e3744 | 288 | /* Add community-list entry to the list. */ |
d62a17ae | 289 | static void community_list_entry_add(struct community_list *list, |
290 | struct community_entry *entry) | |
718e3744 | 291 | { |
d62a17ae | 292 | entry->next = NULL; |
293 | entry->prev = list->tail; | |
294 | ||
295 | if (list->tail) | |
296 | list->tail->next = entry; | |
297 | else | |
298 | list->head = entry; | |
299 | list->tail = entry; | |
718e3744 | 300 | } |
301 | ||
302 | /* Delete community-list entry from the list. */ | |
3571a6a2 DS |
303 | static void community_list_entry_delete(struct community_list_master *cm, |
304 | struct community_list *list, | |
3f54c705 | 305 | struct community_entry *entry) |
718e3744 | 306 | { |
d62a17ae | 307 | if (entry->next) |
308 | entry->next->prev = entry->prev; | |
309 | else | |
310 | list->tail = entry->prev; | |
718e3744 | 311 | |
d62a17ae | 312 | if (entry->prev) |
313 | entry->prev->next = entry->next; | |
314 | else | |
315 | list->head = entry->next; | |
718e3744 | 316 | |
d62a17ae | 317 | community_entry_free(entry); |
718e3744 | 318 | |
d62a17ae | 319 | if (community_list_empty_p(list)) |
3571a6a2 | 320 | community_list_delete(cm, list); |
718e3744 | 321 | } |
322 | ||
323 | /* Lookup community-list entry from the list. */ | |
324 | static struct community_entry * | |
d62a17ae | 325 | community_list_entry_lookup(struct community_list *list, const void *arg, |
326 | int direct) | |
718e3744 | 327 | { |
d62a17ae | 328 | struct community_entry *entry; |
329 | ||
330 | for (entry = list->head; entry; entry = entry->next) { | |
331 | switch (entry->style) { | |
332 | case COMMUNITY_LIST_STANDARD: | |
333 | if (entry->direct == direct | |
334 | && community_cmp(entry->u.com, arg)) | |
335 | return entry; | |
336 | break; | |
337 | case EXTCOMMUNITY_LIST_STANDARD: | |
338 | if (entry->direct == direct | |
339 | && ecommunity_cmp(entry->u.ecom, arg)) | |
340 | return entry; | |
341 | break; | |
342 | case LARGE_COMMUNITY_LIST_STANDARD: | |
343 | if (entry->direct == direct | |
344 | && lcommunity_cmp(entry->u.lcom, arg)) | |
345 | return entry; | |
346 | break; | |
347 | case COMMUNITY_LIST_EXPANDED: | |
348 | case EXTCOMMUNITY_LIST_EXPANDED: | |
349 | case LARGE_COMMUNITY_LIST_EXPANDED: | |
350 | if (entry->direct == direct | |
351 | && strcmp(entry->config, arg) == 0) | |
352 | return entry; | |
353 | break; | |
354 | default: | |
355 | break; | |
356 | } | |
357 | } | |
358 | return NULL; | |
718e3744 | 359 | } |
6b0655a2 | 360 | |
d62a17ae | 361 | static char *community_str_get(struct community *com, int i) |
5cbea288 | 362 | { |
d7c0a89a QY |
363 | uint32_t comval; |
364 | uint16_t as; | |
365 | uint16_t val; | |
d62a17ae | 366 | char *str; |
d62a17ae | 367 | |
d7c0a89a | 368 | memcpy(&comval, com_nthval(com, i), sizeof(uint32_t)); |
d62a17ae | 369 | comval = ntohl(comval); |
370 | ||
371 | switch (comval) { | |
372 | case COMMUNITY_INTERNET: | |
aeab4a80 | 373 | str = XSTRDUP(MTYPE_COMMUNITY_STR, "internet"); |
d62a17ae | 374 | break; |
aa861c10 | 375 | case COMMUNITY_GSHUT: |
aeab4a80 | 376 | str = XSTRDUP(MTYPE_COMMUNITY_STR, "graceful-shutdown"); |
aa861c10 C |
377 | break; |
378 | case COMMUNITY_ACCEPT_OWN: | |
aeab4a80 | 379 | str = XSTRDUP(MTYPE_COMMUNITY_STR, "accept-own"); |
aa861c10 C |
380 | break; |
381 | case COMMUNITY_ROUTE_FILTER_TRANSLATED_v4: | |
aeab4a80 QY |
382 | str = XSTRDUP(MTYPE_COMMUNITY_STR, |
383 | "route-filter-translated-v4"); | |
aa861c10 C |
384 | break; |
385 | case COMMUNITY_ROUTE_FILTER_v4: | |
aeab4a80 | 386 | str = XSTRDUP(MTYPE_COMMUNITY_STR, "route-filter-v4"); |
aa861c10 C |
387 | break; |
388 | case COMMUNITY_ROUTE_FILTER_TRANSLATED_v6: | |
aeab4a80 QY |
389 | str = XSTRDUP(MTYPE_COMMUNITY_STR, |
390 | "route-filter-translated-v6"); | |
aa861c10 C |
391 | break; |
392 | case COMMUNITY_ROUTE_FILTER_v6: | |
aeab4a80 | 393 | str = XSTRDUP(MTYPE_COMMUNITY_STR, "route-filter-v6"); |
aa861c10 C |
394 | break; |
395 | case COMMUNITY_LLGR_STALE: | |
aeab4a80 | 396 | str = XSTRDUP(MTYPE_COMMUNITY_STR, "llgr-stale"); |
aa861c10 C |
397 | break; |
398 | case COMMUNITY_NO_LLGR: | |
aeab4a80 | 399 | str = XSTRDUP(MTYPE_COMMUNITY_STR, "no-llgr"); |
aa861c10 C |
400 | break; |
401 | case COMMUNITY_ACCEPT_OWN_NEXTHOP: | |
aeab4a80 | 402 | str = XSTRDUP(MTYPE_COMMUNITY_STR, "accept-own-nexthop"); |
aa861c10 C |
403 | break; |
404 | case COMMUNITY_BLACKHOLE: | |
aeab4a80 | 405 | str = XSTRDUP(MTYPE_COMMUNITY_STR, "blackhole"); |
aa861c10 | 406 | break; |
d62a17ae | 407 | case COMMUNITY_NO_EXPORT: |
aeab4a80 | 408 | str = XSTRDUP(MTYPE_COMMUNITY_STR, "no-export"); |
d62a17ae | 409 | break; |
410 | case COMMUNITY_NO_ADVERTISE: | |
aeab4a80 | 411 | str = XSTRDUP(MTYPE_COMMUNITY_STR, "no-advertise"); |
d62a17ae | 412 | break; |
413 | case COMMUNITY_LOCAL_AS: | |
aeab4a80 | 414 | str = XSTRDUP(MTYPE_COMMUNITY_STR, "local-AS"); |
d62a17ae | 415 | break; |
aa861c10 | 416 | case COMMUNITY_NO_PEER: |
aeab4a80 | 417 | str = XSTRDUP(MTYPE_COMMUNITY_STR, "no-peer"); |
7f323236 | 418 | break; |
809d6365 | 419 | default: |
aeab4a80 | 420 | str = XSTRDUP(MTYPE_COMMUNITY_STR, "65536:65535"); |
d62a17ae | 421 | as = (comval >> 16) & 0xFFFF; |
422 | val = comval & 0xFFFF; | |
aeab4a80 | 423 | snprintf(str, strlen(str), "%u:%d", as, val); |
d62a17ae | 424 | break; |
425 | } | |
5cbea288 | 426 | |
d62a17ae | 427 | return str; |
5cbea288 DS |
428 | } |
429 | ||
430 | /* Internal function to perform regular expression match for | |
2acb4ac2 | 431 | * a single community. */ |
d62a17ae | 432 | static int community_regexp_include(regex_t *reg, struct community *com, int i) |
5cbea288 | 433 | { |
d62a17ae | 434 | char *str; |
435 | int rv; | |
5cbea288 | 436 | |
d62a17ae | 437 | /* When there is no communities attribute it is treated as empty string. |
438 | */ | |
439 | if (com == NULL || com->size == 0) | |
440 | str = XSTRDUP(MTYPE_COMMUNITY_STR, ""); | |
441 | else | |
442 | str = community_str_get(com, i); | |
5cbea288 | 443 | |
d62a17ae | 444 | /* Regular expression match. */ |
445 | rv = regexec(reg, str, 0, NULL, 0); | |
b84ee83b | 446 | |
d62a17ae | 447 | XFREE(MTYPE_COMMUNITY_STR, str); |
b84ee83b | 448 | |
d62a17ae | 449 | if (rv == 0) |
450 | return 1; | |
5cbea288 | 451 | |
d62a17ae | 452 | /* No match. */ |
453 | return 0; | |
5cbea288 DS |
454 | } |
455 | ||
718e3744 | 456 | /* Internal function to perform regular expression match for community |
457 | attribute. */ | |
d62a17ae | 458 | static int community_regexp_match(struct community *com, regex_t *reg) |
718e3744 | 459 | { |
d62a17ae | 460 | const char *str; |
718e3744 | 461 | |
d62a17ae | 462 | /* When there is no communities attribute it is treated as empty |
463 | string. */ | |
464 | if (com == NULL || com->size == 0) | |
465 | str = ""; | |
466 | else | |
a69ea8ae | 467 | str = community_str(com, false); |
718e3744 | 468 | |
d62a17ae | 469 | /* Regular expression match. */ |
470 | if (regexec(reg, str, 0, NULL, 0) == 0) | |
471 | return 1; | |
718e3744 | 472 | |
d62a17ae | 473 | /* No match. */ |
474 | return 0; | |
718e3744 | 475 | } |
476 | ||
d62a17ae | 477 | static char *lcommunity_str_get(struct lcommunity *lcom, int i) |
57d187bc | 478 | { |
d62a17ae | 479 | struct lcommunity_val lcomval; |
d7c0a89a QY |
480 | uint32_t globaladmin; |
481 | uint32_t localdata1; | |
482 | uint32_t localdata2; | |
d62a17ae | 483 | char *str; |
d7c0a89a | 484 | uint8_t *ptr; |
d62a17ae | 485 | char *pnt; |
486 | ||
ff9104a2 | 487 | ptr = lcom->val + (i * LCOMMUNITY_SIZE); |
d62a17ae | 488 | |
489 | memcpy(&lcomval, ptr, LCOMMUNITY_SIZE); | |
490 | ||
491 | /* Allocate memory. 48 bytes taken off bgp_lcommunity.c */ | |
492 | str = pnt = XMALLOC(MTYPE_LCOMMUNITY_STR, 48); | |
493 | ||
d7c0a89a | 494 | ptr = (uint8_t *)lcomval.val; |
937652c6 DL |
495 | ptr = ptr_get_be32(ptr, &globaladmin); |
496 | ptr = ptr_get_be32(ptr, &localdata1); | |
497 | ptr = ptr_get_be32(ptr, &localdata2); | |
498 | (void)ptr; /* consume value */ | |
d62a17ae | 499 | |
500 | sprintf(pnt, "%u:%u:%u", globaladmin, localdata1, localdata2); | |
501 | pnt += strlen(pnt); | |
502 | *pnt = '\0'; | |
503 | ||
504 | return str; | |
57d187bc JS |
505 | } |
506 | ||
507 | /* Internal function to perform regular expression match for | |
2acb4ac2 | 508 | * a single community. */ |
d62a17ae | 509 | static int lcommunity_regexp_include(regex_t *reg, struct lcommunity *lcom, |
510 | int i) | |
57d187bc | 511 | { |
d62a17ae | 512 | char *str; |
513 | ||
514 | /* When there is no communities attribute it is treated as empty string. | |
515 | */ | |
516 | if (lcom == NULL || lcom->size == 0) | |
517 | str = XSTRDUP(MTYPE_LCOMMUNITY_STR, ""); | |
518 | else | |
519 | str = lcommunity_str_get(lcom, i); | |
520 | ||
521 | /* Regular expression match. */ | |
522 | if (regexec(reg, str, 0, NULL, 0) == 0) { | |
523 | XFREE(MTYPE_LCOMMUNITY_STR, str); | |
524 | return 1; | |
525 | } | |
57d187bc | 526 | |
d62a17ae | 527 | XFREE(MTYPE_LCOMMUNITY_STR, str); |
528 | /* No match. */ | |
529 | return 0; | |
57d187bc JS |
530 | } |
531 | ||
d62a17ae | 532 | static int lcommunity_regexp_match(struct lcommunity *com, regex_t *reg) |
57d187bc | 533 | { |
d62a17ae | 534 | const char *str; |
57d187bc | 535 | |
d62a17ae | 536 | /* When there is no communities attribute it is treated as empty |
537 | string. */ | |
538 | if (com == NULL || com->size == 0) | |
539 | str = ""; | |
540 | else | |
8d9b8ed9 | 541 | str = lcommunity_str(com, false); |
57d187bc | 542 | |
d62a17ae | 543 | /* Regular expression match. */ |
544 | if (regexec(reg, str, 0, NULL, 0) == 0) | |
545 | return 1; | |
57d187bc | 546 | |
d62a17ae | 547 | /* No match. */ |
548 | return 0; | |
57d187bc JS |
549 | } |
550 | ||
551 | ||
d62a17ae | 552 | static int ecommunity_regexp_match(struct ecommunity *ecom, regex_t *reg) |
8708b74f | 553 | { |
d62a17ae | 554 | const char *str; |
8708b74f | 555 | |
d62a17ae | 556 | /* When there is no communities attribute it is treated as empty |
557 | string. */ | |
558 | if (ecom == NULL || ecom->size == 0) | |
559 | str = ""; | |
560 | else | |
561 | str = ecommunity_str(ecom); | |
8708b74f | 562 | |
d62a17ae | 563 | /* Regular expression match. */ |
564 | if (regexec(reg, str, 0, NULL, 0) == 0) | |
565 | return 1; | |
8708b74f | 566 | |
d62a17ae | 567 | /* No match. */ |
568 | return 0; | |
8708b74f | 569 | } |
570 | ||
ffd0c037 | 571 | #if 0 |
718e3744 | 572 | /* Delete community attribute using regular expression match. Return |
573 | modified communites attribute. */ | |
574 | static struct community * | |
8708b74f | 575 | community_regexp_delete (struct community *com, regex_t * reg) |
718e3744 | 576 | { |
aa861c10 C |
577 | int i; |
578 | uint32_t comval; | |
579 | /* Maximum is "65535:65535" + '\0'. */ | |
580 | char c[12]; | |
581 | const char *str; | |
582 | ||
583 | if (!com) | |
584 | return NULL; | |
585 | ||
586 | i = 0; | |
587 | while (i < com->size) | |
588 | { | |
589 | memcpy (&comval, com_nthval (com, i), sizeof (uint32_t)); | |
590 | comval = ntohl (comval); | |
591 | ||
592 | switch (comval) { | |
593 | case COMMUNITY_INTERNET: | |
594 | str = "internet"; | |
595 | break; | |
596 | case COMMUNITY_ACCEPT_OWN: | |
597 | str = "accept-own"; | |
598 | break; | |
599 | case COMMUNITY_ROUTE_FILTER_TRANSLATED_v4: | |
600 | str = "route-filter-translated-v4"; | |
601 | break; | |
602 | case COMMUNITY_ROUTE_FILTER_v4: | |
603 | str = "route-filter-v4"; | |
604 | break; | |
605 | case COMMUNITY_ROUTE_FILTER_TRANSLATED_v6: | |
606 | str = "route-filter-translated-v6"; | |
607 | break; | |
608 | case COMMUNITY_ROUTE_FILTER_v6: | |
609 | str = "route-filter-v6"; | |
610 | break; | |
611 | case COMMUNITY_LLGR_STALE: | |
612 | str = "llgr-stale"; | |
613 | break; | |
614 | case COMMUNITY_NO_LLGR: | |
615 | str = "no-llgr"; | |
616 | break; | |
617 | case COMMUNITY_ACCEPT_OWN_NEXTHOP: | |
618 | str = "accept-own-nexthop"; | |
619 | break; | |
620 | case COMMUNITY_BLACKHOLE: | |
621 | str = "blackhole"; | |
622 | break; | |
623 | case COMMUNITY_NO_EXPORT: | |
624 | str = "no-export"; | |
625 | break; | |
626 | case COMMUNITY_NO_ADVERTISE: | |
627 | str = "no-advertise"; | |
628 | break; | |
629 | case COMMUNITY_LOCAL_AS: | |
630 | str = "local-AS"; | |
631 | break; | |
632 | case COMMUNITY_NO_PEER: | |
633 | str = "no-peer"; | |
634 | break; | |
635 | default: | |
636 | sprintf (c, "%d:%d", (comval >> 16) & 0xFFFF, | |
637 | comval & 0xFFFF); | |
638 | str = c; | |
639 | break; | |
640 | } | |
641 | ||
642 | if (regexec (reg, str, 0, NULL, 0) == 0) | |
643 | community_del_val (com, com_nthval (com, i)); | |
644 | else | |
645 | i++; | |
646 | } | |
647 | return com; | |
718e3744 | 648 | } |
ffd0c037 | 649 | #endif |
718e3744 | 650 | |
651 | /* When given community attribute matches to the community-list return | |
652 | 1 else return 0. */ | |
d62a17ae | 653 | int community_list_match(struct community *com, struct community_list *list) |
718e3744 | 654 | { |
d62a17ae | 655 | struct community_entry *entry; |
656 | ||
657 | for (entry = list->head; entry; entry = entry->next) { | |
658 | if (entry->any) | |
659 | return entry->direct == COMMUNITY_PERMIT ? 1 : 0; | |
660 | ||
661 | if (entry->style == COMMUNITY_LIST_STANDARD) { | |
662 | if (community_include(entry->u.com, COMMUNITY_INTERNET)) | |
663 | return entry->direct == COMMUNITY_PERMIT ? 1 | |
664 | : 0; | |
665 | ||
666 | if (community_match(com, entry->u.com)) | |
667 | return entry->direct == COMMUNITY_PERMIT ? 1 | |
668 | : 0; | |
669 | } else if (entry->style == COMMUNITY_LIST_EXPANDED) { | |
670 | if (community_regexp_match(com, entry->reg)) | |
671 | return entry->direct == COMMUNITY_PERMIT ? 1 | |
672 | : 0; | |
673 | } | |
674 | } | |
675 | return 0; | |
8708b74f | 676 | } |
677 | ||
d62a17ae | 678 | int lcommunity_list_match(struct lcommunity *lcom, struct community_list *list) |
57d187bc | 679 | { |
d62a17ae | 680 | struct community_entry *entry; |
681 | ||
682 | for (entry = list->head; entry; entry = entry->next) { | |
683 | if (entry->any) | |
684 | return entry->direct == COMMUNITY_PERMIT ? 1 : 0; | |
685 | ||
686 | if (entry->style == LARGE_COMMUNITY_LIST_STANDARD) { | |
687 | if (lcommunity_match(lcom, entry->u.lcom)) | |
688 | return entry->direct == COMMUNITY_PERMIT ? 1 | |
689 | : 0; | |
690 | } else if (entry->style == LARGE_COMMUNITY_LIST_EXPANDED) { | |
691 | if (lcommunity_regexp_match(lcom, entry->reg)) | |
692 | return entry->direct == COMMUNITY_PERMIT ? 1 | |
693 | : 0; | |
694 | } | |
695 | } | |
696 | return 0; | |
57d187bc JS |
697 | } |
698 | ||
d62a17ae | 699 | int ecommunity_list_match(struct ecommunity *ecom, struct community_list *list) |
8708b74f | 700 | { |
d62a17ae | 701 | struct community_entry *entry; |
702 | ||
703 | for (entry = list->head; entry; entry = entry->next) { | |
704 | if (entry->any) | |
705 | return entry->direct == COMMUNITY_PERMIT ? 1 : 0; | |
706 | ||
707 | if (entry->style == EXTCOMMUNITY_LIST_STANDARD) { | |
708 | if (ecommunity_match(ecom, entry->u.ecom)) | |
709 | return entry->direct == COMMUNITY_PERMIT ? 1 | |
710 | : 0; | |
711 | } else if (entry->style == EXTCOMMUNITY_LIST_EXPANDED) { | |
712 | if (ecommunity_regexp_match(ecom, entry->reg)) | |
713 | return entry->direct == COMMUNITY_PERMIT ? 1 | |
714 | : 0; | |
715 | } | |
716 | } | |
717 | return 0; | |
718e3744 | 718 | } |
719 | ||
720 | /* Perform exact matching. In case of expanded community-list, do | |
721 | same thing as community_list_match(). */ | |
d62a17ae | 722 | int community_list_exact_match(struct community *com, |
723 | struct community_list *list) | |
718e3744 | 724 | { |
d62a17ae | 725 | struct community_entry *entry; |
726 | ||
727 | for (entry = list->head; entry; entry = entry->next) { | |
728 | if (entry->any) | |
729 | return entry->direct == COMMUNITY_PERMIT ? 1 : 0; | |
730 | ||
731 | if (entry->style == COMMUNITY_LIST_STANDARD) { | |
732 | if (community_include(entry->u.com, COMMUNITY_INTERNET)) | |
733 | return entry->direct == COMMUNITY_PERMIT ? 1 | |
734 | : 0; | |
735 | ||
736 | if (community_cmp(com, entry->u.com)) | |
737 | return entry->direct == COMMUNITY_PERMIT ? 1 | |
738 | : 0; | |
739 | } else if (entry->style == COMMUNITY_LIST_EXPANDED) { | |
740 | if (community_regexp_match(com, entry->reg)) | |
741 | return entry->direct == COMMUNITY_PERMIT ? 1 | |
742 | : 0; | |
743 | } | |
744 | } | |
745 | return 0; | |
718e3744 | 746 | } |
747 | ||
8708b74f | 748 | /* Delete all permitted communities in the list from com. */ |
d62a17ae | 749 | struct community *community_list_match_delete(struct community *com, |
750 | struct community_list *list) | |
718e3744 | 751 | { |
d62a17ae | 752 | struct community_entry *entry; |
d7c0a89a QY |
753 | uint32_t val; |
754 | uint32_t com_index_to_delete[com->size]; | |
d62a17ae | 755 | int delete_index = 0; |
756 | int i; | |
757 | ||
758 | /* Loop over each community value and evaluate each against the | |
759 | * community-list. If we need to delete a community value add its index | |
ceead39c | 760 | * to com_index_to_delete. |
d62a17ae | 761 | */ |
762 | for (i = 0; i < com->size; i++) { | |
763 | val = community_val_get(com, i); | |
764 | ||
765 | for (entry = list->head; entry; entry = entry->next) { | |
766 | if (entry->any) { | |
767 | if (entry->direct == COMMUNITY_PERMIT) { | |
768 | com_index_to_delete[delete_index] = i; | |
769 | delete_index++; | |
770 | } | |
771 | break; | |
772 | } | |
773 | ||
774 | else if ((entry->style == COMMUNITY_LIST_STANDARD) | |
775 | && (community_include(entry->u.com, | |
776 | COMMUNITY_INTERNET) | |
777 | || community_include(entry->u.com, val))) { | |
778 | if (entry->direct == COMMUNITY_PERMIT) { | |
779 | com_index_to_delete[delete_index] = i; | |
780 | delete_index++; | |
781 | } | |
782 | break; | |
783 | } | |
784 | ||
785 | else if ((entry->style == COMMUNITY_LIST_EXPANDED) | |
786 | && community_regexp_include(entry->reg, com, | |
787 | i)) { | |
788 | if (entry->direct == COMMUNITY_PERMIT) { | |
789 | com_index_to_delete[delete_index] = i; | |
790 | delete_index++; | |
791 | } | |
792 | break; | |
793 | } | |
794 | } | |
795 | } | |
5cbea288 | 796 | |
d62a17ae | 797 | /* Delete all of the communities we flagged for deletion */ |
798 | for (i = delete_index - 1; i >= 0; i--) { | |
799 | val = community_val_get(com, com_index_to_delete[i]); | |
21b729d1 | 800 | val = htonl(val); |
d62a17ae | 801 | community_del_val(com, &val); |
802 | } | |
5cbea288 | 803 | |
d62a17ae | 804 | return com; |
718e3744 | 805 | } |
806 | ||
807 | /* To avoid duplicated entry in the community-list, this function | |
808 | compares specified entry to existing entry. */ | |
d62a17ae | 809 | static int community_list_dup_check(struct community_list *list, |
810 | struct community_entry *new) | |
718e3744 | 811 | { |
d62a17ae | 812 | struct community_entry *entry; |
813 | ||
814 | for (entry = list->head; entry; entry = entry->next) { | |
815 | if (entry->style != new->style) | |
816 | continue; | |
817 | ||
818 | if (entry->direct != new->direct) | |
819 | continue; | |
820 | ||
821 | if (entry->any != new->any) | |
822 | continue; | |
823 | ||
824 | if (entry->any) | |
825 | return 1; | |
826 | ||
827 | switch (entry->style) { | |
828 | case COMMUNITY_LIST_STANDARD: | |
829 | if (community_cmp(entry->u.com, new->u.com)) | |
830 | return 1; | |
831 | break; | |
832 | case LARGE_COMMUNITY_LIST_STANDARD: | |
833 | if (lcommunity_cmp(entry->u.lcom, new->u.lcom)) | |
834 | return 1; | |
835 | break; | |
836 | case EXTCOMMUNITY_LIST_STANDARD: | |
837 | if (ecommunity_cmp(entry->u.ecom, new->u.ecom)) | |
838 | return 1; | |
839 | break; | |
840 | case COMMUNITY_LIST_EXPANDED: | |
841 | case EXTCOMMUNITY_LIST_EXPANDED: | |
842 | case LARGE_COMMUNITY_LIST_EXPANDED: | |
843 | if (strcmp(entry->config, new->config) == 0) | |
844 | return 1; | |
845 | break; | |
846 | default: | |
847 | break; | |
848 | } | |
849 | } | |
850 | return 0; | |
718e3744 | 851 | } |
6b0655a2 | 852 | |
718e3744 | 853 | /* Set community-list. */ |
d62a17ae | 854 | int community_list_set(struct community_list_handler *ch, const char *name, |
855 | const char *str, int direct, int style) | |
718e3744 | 856 | { |
d62a17ae | 857 | struct community_entry *entry = NULL; |
858 | struct community_list *list; | |
859 | struct community *com = NULL; | |
860 | regex_t *regex = NULL; | |
861 | ||
862 | /* Get community list. */ | |
863 | list = community_list_get(ch, name, COMMUNITY_LIST_MASTER); | |
864 | ||
865 | /* When community-list already has entry, new entry should have same | |
866 | style. If you want to have mixed style community-list, you can | |
867 | comment out this check. */ | |
868 | if (!community_list_empty_p(list)) { | |
869 | struct community_entry *first; | |
870 | ||
871 | first = list->head; | |
872 | ||
873 | if (style != first->style) { | |
874 | return (first->style == COMMUNITY_LIST_STANDARD | |
875 | ? COMMUNITY_LIST_ERR_STANDARD_CONFLICT | |
876 | : COMMUNITY_LIST_ERR_EXPANDED_CONFLICT); | |
877 | } | |
fee6e4e4 | 878 | } |
718e3744 | 879 | |
d62a17ae | 880 | if (str) { |
881 | if (style == COMMUNITY_LIST_STANDARD) | |
882 | com = community_str2com(str); | |
883 | else | |
884 | regex = bgp_regcomp(str); | |
8708b74f | 885 | |
d62a17ae | 886 | if (!com && !regex) |
887 | return COMMUNITY_LIST_ERR_MALFORMED_VAL; | |
888 | } | |
718e3744 | 889 | |
d62a17ae | 890 | entry = community_entry_new(); |
891 | entry->direct = direct; | |
892 | entry->style = style; | |
893 | entry->any = (str ? 0 : 1); | |
894 | entry->u.com = com; | |
895 | entry->reg = regex; | |
896 | entry->config = | |
897 | (regex ? XSTRDUP(MTYPE_COMMUNITY_LIST_CONFIG, str) : NULL); | |
898 | ||
899 | /* Do not put duplicated community entry. */ | |
900 | if (community_list_dup_check(list, entry)) | |
901 | community_entry_free(entry); | |
902 | else { | |
903 | community_list_entry_add(list, entry); | |
904 | route_map_notify_dependencies(name, RMAP_EVENT_CLIST_ADDED); | |
905 | } | |
718e3744 | 906 | |
d62a17ae | 907 | return 0; |
718e3744 | 908 | } |
909 | ||
813d4307 | 910 | /* Unset community-list */ |
d62a17ae | 911 | int community_list_unset(struct community_list_handler *ch, const char *name, |
7298a8e1 | 912 | const char *str, int direct, int style) |
718e3744 | 913 | { |
3571a6a2 | 914 | struct community_list_master *cm = NULL; |
d62a17ae | 915 | struct community_entry *entry = NULL; |
916 | struct community_list *list; | |
917 | struct community *com = NULL; | |
918 | ||
919 | /* Lookup community list. */ | |
e237b0d2 | 920 | list = community_list_lookup(ch, name, 0, COMMUNITY_LIST_MASTER); |
d62a17ae | 921 | if (list == NULL) |
922 | return COMMUNITY_LIST_ERR_CANT_FIND_LIST; | |
923 | ||
3571a6a2 | 924 | cm = community_list_master_lookup(ch, COMMUNITY_LIST_MASTER); |
d62a17ae | 925 | /* Delete all of entry belongs to this community-list. */ |
7298a8e1 | 926 | if (!str) { |
3571a6a2 | 927 | community_list_delete(cm, list); |
d62a17ae | 928 | route_map_notify_dependencies(name, RMAP_EVENT_CLIST_DELETED); |
929 | return 0; | |
930 | } | |
718e3744 | 931 | |
7298a8e1 QY |
932 | if (style == COMMUNITY_LIST_STANDARD) |
933 | com = community_str2com(str); | |
718e3744 | 934 | |
d62a17ae | 935 | if (com) { |
936 | entry = community_list_entry_lookup(list, com, direct); | |
3c1f53de | 937 | community_free(&com); |
d62a17ae | 938 | } else |
939 | entry = community_list_entry_lookup(list, str, direct); | |
fee6e4e4 | 940 | |
d62a17ae | 941 | if (!entry) |
942 | return COMMUNITY_LIST_ERR_CANT_FIND_LIST; | |
718e3744 | 943 | |
3571a6a2 | 944 | community_list_entry_delete(cm, list, entry); |
d62a17ae | 945 | route_map_notify_dependencies(name, RMAP_EVENT_CLIST_DELETED); |
718e3744 | 946 | |
d62a17ae | 947 | return 0; |
718e3744 | 948 | } |
949 | ||
57d187bc | 950 | /* Delete all permitted large communities in the list from com. */ |
d62a17ae | 951 | struct lcommunity *lcommunity_list_match_delete(struct lcommunity *lcom, |
952 | struct community_list *list) | |
57d187bc | 953 | { |
d62a17ae | 954 | struct community_entry *entry; |
d7c0a89a QY |
955 | uint32_t com_index_to_delete[lcom->size]; |
956 | uint8_t *ptr; | |
d62a17ae | 957 | int delete_index = 0; |
958 | int i; | |
959 | ||
960 | /* Loop over each lcommunity value and evaluate each against the | |
961 | * community-list. If we need to delete a community value add its index | |
ceead39c | 962 | * to com_index_to_delete. |
d62a17ae | 963 | */ |
d62a17ae | 964 | for (i = 0; i < lcom->size; i++) { |
534fc195 | 965 | ptr = lcom->val + (i * LCOMMUNITY_SIZE); |
d62a17ae | 966 | for (entry = list->head; entry; entry = entry->next) { |
967 | if (entry->any) { | |
968 | if (entry->direct == COMMUNITY_PERMIT) { | |
969 | com_index_to_delete[delete_index] = i; | |
970 | delete_index++; | |
971 | } | |
972 | break; | |
973 | } | |
974 | ||
975 | else if ((entry->style == LARGE_COMMUNITY_LIST_STANDARD) | |
976 | && lcommunity_include(entry->u.lcom, ptr)) { | |
977 | if (entry->direct == COMMUNITY_PERMIT) { | |
978 | com_index_to_delete[delete_index] = i; | |
979 | delete_index++; | |
980 | } | |
981 | break; | |
982 | } | |
983 | ||
cde8d696 | 984 | else if ((entry->style == LARGE_COMMUNITY_LIST_EXPANDED) |
d62a17ae | 985 | && lcommunity_regexp_include(entry->reg, lcom, |
986 | i)) { | |
987 | if (entry->direct == COMMUNITY_PERMIT) { | |
988 | com_index_to_delete[delete_index] = i; | |
989 | delete_index++; | |
990 | } | |
991 | break; | |
992 | } | |
993 | } | |
994 | } | |
57d187bc | 995 | |
d62a17ae | 996 | /* Delete all of the communities we flagged for deletion */ |
d62a17ae | 997 | for (i = delete_index - 1; i >= 0; i--) { |
0a7dce9b | 998 | ptr = lcom->val + (com_index_to_delete[i] * LCOMMUNITY_SIZE); |
d62a17ae | 999 | lcommunity_del_val(lcom, ptr); |
1000 | } | |
57d187bc | 1001 | |
d62a17ae | 1002 | return lcom; |
57d187bc JS |
1003 | } |
1004 | ||
653eab61 DA |
1005 | /* Helper to check if every octet do not exceed UINT_MAX */ |
1006 | static int lcommunity_list_valid(const char *community) | |
1007 | { | |
1008 | int octets = 0; | |
1009 | char **splits; | |
1010 | int num; | |
1011 | ||
1012 | frrstr_split(community, ":", &splits, &num); | |
1013 | ||
1014 | for (int i = 0; i < num; i++) { | |
1015 | if (strtoul(splits[i], NULL, 10) > UINT_MAX) | |
1016 | return 0; | |
1017 | ||
1018 | if (strlen(splits[i]) == 0) | |
1019 | return 0; | |
1020 | ||
1021 | octets++; | |
1022 | XFREE(MTYPE_TMP, splits[i]); | |
1023 | } | |
1024 | XFREE(MTYPE_TMP, splits); | |
1025 | ||
1026 | if (octets < 3) | |
1027 | return 0; | |
1028 | ||
1029 | return 1; | |
1030 | } | |
1031 | ||
57d187bc | 1032 | /* Set lcommunity-list. */ |
d62a17ae | 1033 | int lcommunity_list_set(struct community_list_handler *ch, const char *name, |
1034 | const char *str, int direct, int style) | |
57d187bc | 1035 | { |
d62a17ae | 1036 | struct community_entry *entry = NULL; |
1037 | struct community_list *list; | |
1038 | struct lcommunity *lcom = NULL; | |
1039 | regex_t *regex = NULL; | |
1040 | ||
1041 | /* Get community list. */ | |
1042 | list = community_list_get(ch, name, LARGE_COMMUNITY_LIST_MASTER); | |
1043 | ||
1044 | /* When community-list already has entry, new entry should have same | |
1045 | style. If you want to have mixed style community-list, you can | |
1046 | comment out this check. */ | |
1047 | if (!community_list_empty_p(list)) { | |
1048 | struct community_entry *first; | |
1049 | ||
1050 | first = list->head; | |
1051 | ||
1052 | if (style != first->style) { | |
1053 | return (first->style == COMMUNITY_LIST_STANDARD | |
1054 | ? COMMUNITY_LIST_ERR_STANDARD_CONFLICT | |
1055 | : COMMUNITY_LIST_ERR_EXPANDED_CONFLICT); | |
1056 | } | |
1057 | } | |
57d187bc | 1058 | |
d62a17ae | 1059 | if (str) { |
653eab61 DA |
1060 | if (!lcommunity_list_valid(str)) |
1061 | return COMMUNITY_LIST_ERR_MALFORMED_VAL; | |
1062 | ||
d62a17ae | 1063 | if (style == LARGE_COMMUNITY_LIST_STANDARD) |
1064 | lcom = lcommunity_str2com(str); | |
1065 | else | |
1066 | regex = bgp_regcomp(str); | |
57d187bc | 1067 | |
d62a17ae | 1068 | if (!lcom && !regex) |
1069 | return COMMUNITY_LIST_ERR_MALFORMED_VAL; | |
1070 | } | |
57d187bc | 1071 | |
d62a17ae | 1072 | entry = community_entry_new(); |
1073 | entry->direct = direct; | |
1074 | entry->style = style; | |
1075 | entry->any = (str ? 0 : 1); | |
1076 | entry->u.lcom = lcom; | |
1077 | entry->reg = regex; | |
8d9b8ed9 PM |
1078 | entry->config = |
1079 | (regex ? XSTRDUP(MTYPE_COMMUNITY_LIST_CONFIG, str) : NULL); | |
d62a17ae | 1080 | |
1081 | /* Do not put duplicated community entry. */ | |
1082 | if (community_list_dup_check(list, entry)) | |
1083 | community_entry_free(entry); | |
35f6f850 | 1084 | else { |
d62a17ae | 1085 | community_list_entry_add(list, entry); |
35f6f850 | 1086 | route_map_notify_dependencies(name, RMAP_EVENT_LLIST_ADDED); |
1087 | } | |
d62a17ae | 1088 | |
1089 | return 0; | |
57d187bc JS |
1090 | } |
1091 | ||
1092 | /* Unset community-list. When str is NULL, delete all of | |
1093 | community-list entry belongs to the specified name. */ | |
d62a17ae | 1094 | int lcommunity_list_unset(struct community_list_handler *ch, const char *name, |
1095 | const char *str, int direct, int style) | |
57d187bc | 1096 | { |
3571a6a2 | 1097 | struct community_list_master *cm = NULL; |
d62a17ae | 1098 | struct community_entry *entry = NULL; |
1099 | struct community_list *list; | |
1100 | struct lcommunity *lcom = NULL; | |
1101 | regex_t *regex = NULL; | |
1102 | ||
1103 | /* Lookup community list. */ | |
e237b0d2 | 1104 | list = community_list_lookup(ch, name, 0, LARGE_COMMUNITY_LIST_MASTER); |
d62a17ae | 1105 | if (list == NULL) |
1106 | return COMMUNITY_LIST_ERR_CANT_FIND_LIST; | |
1107 | ||
3571a6a2 | 1108 | cm = community_list_master_lookup(ch, LARGE_COMMUNITY_LIST_MASTER); |
d62a17ae | 1109 | /* Delete all of entry belongs to this community-list. */ |
1110 | if (!str) { | |
3571a6a2 | 1111 | community_list_delete(cm, list); |
35f6f850 | 1112 | route_map_notify_dependencies(name, RMAP_EVENT_LLIST_DELETED); |
d62a17ae | 1113 | return 0; |
1114 | } | |
57d187bc | 1115 | |
d62a17ae | 1116 | if (style == LARGE_COMMUNITY_LIST_STANDARD) |
1117 | lcom = lcommunity_str2com(str); | |
1118 | else | |
1119 | regex = bgp_regcomp(str); | |
57d187bc | 1120 | |
d62a17ae | 1121 | if (!lcom && !regex) |
1122 | return COMMUNITY_LIST_ERR_MALFORMED_VAL; | |
57d187bc | 1123 | |
d62a17ae | 1124 | if (lcom) |
1125 | entry = community_list_entry_lookup(list, lcom, direct); | |
1126 | else | |
1127 | entry = community_list_entry_lookup(list, str, direct); | |
57d187bc | 1128 | |
d62a17ae | 1129 | if (lcom) |
1130 | lcommunity_free(&lcom); | |
1131 | if (regex) | |
1132 | bgp_regex_free(regex); | |
57d187bc | 1133 | |
d62a17ae | 1134 | if (!entry) |
1135 | return COMMUNITY_LIST_ERR_CANT_FIND_LIST; | |
57d187bc | 1136 | |
3571a6a2 | 1137 | community_list_entry_delete(cm, list, entry); |
35f6f850 | 1138 | route_map_notify_dependencies(name, RMAP_EVENT_LLIST_DELETED); |
57d187bc | 1139 | |
d62a17ae | 1140 | return 0; |
57d187bc JS |
1141 | } |
1142 | ||
718e3744 | 1143 | /* Set extcommunity-list. */ |
d62a17ae | 1144 | int extcommunity_list_set(struct community_list_handler *ch, const char *name, |
1145 | const char *str, int direct, int style) | |
718e3744 | 1146 | { |
d62a17ae | 1147 | struct community_entry *entry = NULL; |
1148 | struct community_list *list; | |
1149 | struct ecommunity *ecom = NULL; | |
1150 | regex_t *regex = NULL; | |
718e3744 | 1151 | |
fa301630 | 1152 | if (str == NULL) |
1153 | return COMMUNITY_LIST_ERR_MALFORMED_VAL; | |
1154 | ||
d62a17ae | 1155 | /* Get community list. */ |
1156 | list = community_list_get(ch, name, EXTCOMMUNITY_LIST_MASTER); | |
718e3744 | 1157 | |
d62a17ae | 1158 | /* When community-list already has entry, new entry should have same |
1159 | style. If you want to have mixed style community-list, you can | |
1160 | comment out this check. */ | |
1161 | if (!community_list_empty_p(list)) { | |
1162 | struct community_entry *first; | |
718e3744 | 1163 | |
d62a17ae | 1164 | first = list->head; |
718e3744 | 1165 | |
d62a17ae | 1166 | if (style != first->style) { |
1167 | return (first->style == EXTCOMMUNITY_LIST_STANDARD | |
1168 | ? COMMUNITY_LIST_ERR_STANDARD_CONFLICT | |
1169 | : COMMUNITY_LIST_ERR_EXPANDED_CONFLICT); | |
1170 | } | |
fee6e4e4 | 1171 | } |
718e3744 | 1172 | |
d62a17ae | 1173 | if (style == EXTCOMMUNITY_LIST_STANDARD) |
1174 | ecom = ecommunity_str2com(str, 0, 1); | |
1175 | else | |
1176 | regex = bgp_regcomp(str); | |
1177 | ||
1178 | if (!ecom && !regex) | |
1179 | return COMMUNITY_LIST_ERR_MALFORMED_VAL; | |
1180 | ||
1181 | if (ecom) | |
1182 | ecom->str = | |
1183 | ecommunity_ecom2str(ecom, ECOMMUNITY_FORMAT_DISPLAY, 0); | |
1184 | ||
1185 | entry = community_entry_new(); | |
1186 | entry->direct = direct; | |
1187 | entry->style = style; | |
fa301630 | 1188 | entry->any = 0; |
d62a17ae | 1189 | if (ecom) |
1190 | entry->config = ecommunity_ecom2str( | |
1191 | ecom, ECOMMUNITY_FORMAT_COMMUNITY_LIST, 0); | |
1192 | else if (regex) | |
1193 | entry->config = XSTRDUP(MTYPE_COMMUNITY_LIST_CONFIG, str); | |
1194 | ||
1195 | entry->u.ecom = ecom; | |
1196 | entry->reg = regex; | |
1197 | ||
1198 | /* Do not put duplicated community entry. */ | |
1199 | if (community_list_dup_check(list, entry)) | |
1200 | community_entry_free(entry); | |
1201 | else { | |
1202 | community_list_entry_add(list, entry); | |
1203 | route_map_notify_dependencies(name, RMAP_EVENT_ECLIST_ADDED); | |
1204 | } | |
718e3744 | 1205 | |
d62a17ae | 1206 | return 0; |
718e3744 | 1207 | } |
1208 | ||
7298a8e1 QY |
1209 | /* Unset extcommunity-list. |
1210 | * | |
1211 | * When str is NULL, delete all extcommunity-list entries belonging to the | |
1212 | * specified name. | |
1213 | */ | |
d62a17ae | 1214 | int extcommunity_list_unset(struct community_list_handler *ch, const char *name, |
7298a8e1 | 1215 | const char *str, int direct, int style) |
718e3744 | 1216 | { |
3571a6a2 | 1217 | struct community_list_master *cm = NULL; |
d62a17ae | 1218 | struct community_entry *entry = NULL; |
1219 | struct community_list *list; | |
1220 | struct ecommunity *ecom = NULL; | |
1221 | ||
1222 | /* Lookup extcommunity list. */ | |
e237b0d2 | 1223 | list = community_list_lookup(ch, name, 0, EXTCOMMUNITY_LIST_MASTER); |
d62a17ae | 1224 | if (list == NULL) |
1225 | return COMMUNITY_LIST_ERR_CANT_FIND_LIST; | |
1226 | ||
3571a6a2 | 1227 | cm = community_list_master_lookup(ch, EXTCOMMUNITY_LIST_MASTER); |
d62a17ae | 1228 | /* Delete all of entry belongs to this extcommunity-list. */ |
7298a8e1 | 1229 | if (!str) { |
3571a6a2 | 1230 | community_list_delete(cm, list); |
d62a17ae | 1231 | route_map_notify_dependencies(name, RMAP_EVENT_ECLIST_DELETED); |
1232 | return 0; | |
1233 | } | |
718e3744 | 1234 | |
7298a8e1 QY |
1235 | if (style == EXTCOMMUNITY_LIST_STANDARD) |
1236 | ecom = ecommunity_str2com(str, 0, 1); | |
718e3744 | 1237 | |
d62a17ae | 1238 | if (ecom) { |
1239 | entry = community_list_entry_lookup(list, ecom, direct); | |
1240 | ecommunity_free(&ecom); | |
1241 | } else | |
1242 | entry = community_list_entry_lookup(list, str, direct); | |
fee6e4e4 | 1243 | |
d62a17ae | 1244 | if (!entry) |
1245 | return COMMUNITY_LIST_ERR_CANT_FIND_LIST; | |
718e3744 | 1246 | |
3571a6a2 | 1247 | community_list_entry_delete(cm, list, entry); |
d62a17ae | 1248 | route_map_notify_dependencies(name, RMAP_EVENT_ECLIST_DELETED); |
718e3744 | 1249 | |
d62a17ae | 1250 | return 0; |
718e3744 | 1251 | } |
1252 | ||
1253 | /* Initializa community-list. Return community-list handler. */ | |
d62a17ae | 1254 | struct community_list_handler *community_list_init(void) |
718e3744 | 1255 | { |
d62a17ae | 1256 | struct community_list_handler *ch; |
1257 | ch = XCALLOC(MTYPE_COMMUNITY_LIST_HANDLER, | |
1258 | sizeof(struct community_list_handler)); | |
3571a6a2 DS |
1259 | |
1260 | ch->community_list.hash = | |
1261 | hash_create_size(4, bgp_clist_hash_key_community_list, | |
1262 | bgp_clist_hash_cmp_community_list, | |
1263 | "Community List Number Quick Lookup"); | |
1264 | ||
1265 | ch->extcommunity_list.hash = | |
1266 | hash_create_size(4, bgp_clist_hash_key_community_list, | |
1267 | bgp_clist_hash_cmp_community_list, | |
1268 | "Extended Community List Quick Lookup"); | |
1269 | ||
1270 | ch->lcommunity_list.hash = | |
1271 | hash_create_size(4, bgp_clist_hash_key_community_list, | |
1272 | bgp_clist_hash_cmp_community_list, | |
1273 | "Large Community List Quick Lookup"); | |
1274 | ||
d62a17ae | 1275 | return ch; |
718e3744 | 1276 | } |
1277 | ||
1278 | /* Terminate community-list. */ | |
d62a17ae | 1279 | void community_list_terminate(struct community_list_handler *ch) |
718e3744 | 1280 | { |
d62a17ae | 1281 | struct community_list_master *cm; |
1282 | struct community_list *list; | |
1283 | ||
1284 | cm = &ch->community_list; | |
1285 | while ((list = cm->num.head) != NULL) | |
3571a6a2 | 1286 | community_list_delete(cm, list); |
d62a17ae | 1287 | while ((list = cm->str.head) != NULL) |
3571a6a2 DS |
1288 | community_list_delete(cm, list); |
1289 | hash_free(cm->hash); | |
d62a17ae | 1290 | |
1291 | cm = &ch->lcommunity_list; | |
1292 | while ((list = cm->num.head) != NULL) | |
3571a6a2 | 1293 | community_list_delete(cm, list); |
d62a17ae | 1294 | while ((list = cm->str.head) != NULL) |
3571a6a2 DS |
1295 | community_list_delete(cm, list); |
1296 | hash_free(cm->hash); | |
d62a17ae | 1297 | |
1298 | cm = &ch->extcommunity_list; | |
1299 | while ((list = cm->num.head) != NULL) | |
3571a6a2 | 1300 | community_list_delete(cm, list); |
d62a17ae | 1301 | while ((list = cm->str.head) != NULL) |
3571a6a2 DS |
1302 | community_list_delete(cm, list); |
1303 | hash_free(cm->hash); | |
d62a17ae | 1304 | |
1305 | XFREE(MTYPE_COMMUNITY_LIST_HANDLER, ch); | |
718e3744 | 1306 | } |