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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" |
718e3744 | 29 | |
30 | #include "bgpd/bgpd.h" | |
31 | #include "bgpd/bgp_community.h" | |
32 | #include "bgpd/bgp_ecommunity.h" | |
57d187bc | 33 | #include "bgpd/bgp_lcommunity.h" |
718e3744 | 34 | #include "bgpd/bgp_aspath.h" |
35 | #include "bgpd/bgp_regex.h" | |
36 | #include "bgpd/bgp_clist.h" | |
6b0655a2 | 37 | |
718e3744 | 38 | /* Lookup master structure for community-list or |
39 | extcommunity-list. */ | |
40 | struct community_list_master * | |
d62a17ae | 41 | community_list_master_lookup(struct community_list_handler *ch, int master) |
718e3744 | 42 | { |
d62a17ae | 43 | if (ch) |
44 | switch (master) { | |
45 | case COMMUNITY_LIST_MASTER: | |
46 | return &ch->community_list; | |
47 | case EXTCOMMUNITY_LIST_MASTER: | |
48 | return &ch->extcommunity_list; | |
49 | case LARGE_COMMUNITY_LIST_MASTER: | |
50 | return &ch->lcommunity_list; | |
51 | } | |
52 | return NULL; | |
718e3744 | 53 | } |
54 | ||
55 | /* Allocate a new community list entry. */ | |
d62a17ae | 56 | static struct community_entry *community_entry_new(void) |
718e3744 | 57 | { |
d62a17ae | 58 | return XCALLOC(MTYPE_COMMUNITY_LIST_ENTRY, |
59 | sizeof(struct community_entry)); | |
718e3744 | 60 | } |
61 | ||
62 | /* Free community list entry. */ | |
d62a17ae | 63 | static void community_entry_free(struct community_entry *entry) |
718e3744 | 64 | { |
d62a17ae | 65 | switch (entry->style) { |
66 | case COMMUNITY_LIST_STANDARD: | |
67 | if (entry->u.com) | |
68 | community_free(entry->u.com); | |
69 | break; | |
70 | case LARGE_COMMUNITY_LIST_STANDARD: | |
71 | if (entry->u.lcom) | |
72 | lcommunity_free(&entry->u.lcom); | |
73 | break; | |
74 | case EXTCOMMUNITY_LIST_STANDARD: | |
75 | /* In case of standard extcommunity-list, configuration string | |
76 | is made by ecommunity_ecom2str(). */ | |
77 | if (entry->config) | |
78 | XFREE(MTYPE_ECOMMUNITY_STR, entry->config); | |
79 | if (entry->u.ecom) | |
80 | ecommunity_free(&entry->u.ecom); | |
81 | break; | |
82 | case COMMUNITY_LIST_EXPANDED: | |
83 | case EXTCOMMUNITY_LIST_EXPANDED: | |
84 | case LARGE_COMMUNITY_LIST_EXPANDED: | |
85 | if (entry->config) | |
86 | XFREE(MTYPE_COMMUNITY_LIST_CONFIG, entry->config); | |
87 | if (entry->reg) | |
88 | bgp_regex_free(entry->reg); | |
89 | default: | |
90 | break; | |
91 | } | |
92 | XFREE(MTYPE_COMMUNITY_LIST_ENTRY, entry); | |
718e3744 | 93 | } |
94 | ||
95 | /* Allocate a new community-list. */ | |
d62a17ae | 96 | static struct community_list *community_list_new(void) |
718e3744 | 97 | { |
d62a17ae | 98 | return XCALLOC(MTYPE_COMMUNITY_LIST, sizeof(struct community_list)); |
718e3744 | 99 | } |
100 | ||
101 | /* Free community-list. */ | |
d62a17ae | 102 | static void community_list_free(struct community_list *list) |
718e3744 | 103 | { |
d62a17ae | 104 | if (list->name) |
105 | XFREE(MTYPE_COMMUNITY_LIST_NAME, list->name); | |
106 | XFREE(MTYPE_COMMUNITY_LIST, list); | |
718e3744 | 107 | } |
108 | ||
94f2b392 | 109 | static struct community_list * |
d62a17ae | 110 | community_list_insert(struct community_list_handler *ch, const char *name, |
111 | int master) | |
718e3744 | 112 | { |
d62a17ae | 113 | size_t i; |
114 | long number; | |
115 | struct community_list *new; | |
116 | struct community_list *point; | |
117 | struct community_list_list *list; | |
118 | struct community_list_master *cm; | |
119 | ||
120 | /* Lookup community-list master. */ | |
121 | cm = community_list_master_lookup(ch, master); | |
122 | if (!cm) | |
123 | return NULL; | |
124 | ||
125 | /* Allocate new community_list and copy given name. */ | |
126 | new = community_list_new(); | |
127 | new->name = XSTRDUP(MTYPE_COMMUNITY_LIST_NAME, name); | |
128 | ||
129 | /* If name is made by all digit character. We treat it as | |
130 | number. */ | |
131 | for (number = 0, i = 0; i < strlen(name); i++) { | |
132 | if (isdigit((int)name[i])) | |
133 | number = (number * 10) + (name[i] - '0'); | |
134 | else | |
135 | break; | |
136 | } | |
718e3744 | 137 | |
d62a17ae | 138 | /* In case of name is all digit character */ |
139 | if (i == strlen(name)) { | |
140 | new->sort = COMMUNITY_LIST_NUMBER; | |
718e3744 | 141 | |
d62a17ae | 142 | /* Set access_list to number list. */ |
143 | list = &cm->num; | |
718e3744 | 144 | |
d62a17ae | 145 | for (point = list->head; point; point = point->next) |
146 | if (atol(point->name) >= number) | |
147 | break; | |
148 | } else { | |
149 | new->sort = COMMUNITY_LIST_STRING; | |
718e3744 | 150 | |
d62a17ae | 151 | /* Set access_list to string list. */ |
152 | list = &cm->str; | |
718e3744 | 153 | |
d62a17ae | 154 | /* Set point to insertion point. */ |
155 | for (point = list->head; point; point = point->next) | |
156 | if (strcmp(point->name, name) >= 0) | |
157 | break; | |
158 | } | |
718e3744 | 159 | |
d62a17ae | 160 | /* Link to upper list. */ |
161 | new->parent = list; | |
718e3744 | 162 | |
d62a17ae | 163 | /* In case of this is the first element of master. */ |
164 | if (list->head == NULL) { | |
165 | list->head = list->tail = new; | |
166 | return new; | |
167 | } | |
718e3744 | 168 | |
d62a17ae | 169 | /* In case of insertion is made at the tail of access_list. */ |
170 | if (point == NULL) { | |
171 | new->prev = list->tail; | |
172 | list->tail->next = new; | |
173 | list->tail = new; | |
174 | return new; | |
175 | } | |
718e3744 | 176 | |
d62a17ae | 177 | /* In case of insertion is made at the head of access_list. */ |
178 | if (point == list->head) { | |
179 | new->next = list->head; | |
180 | list->head->prev = new; | |
181 | list->head = new; | |
182 | return new; | |
183 | } | |
718e3744 | 184 | |
d62a17ae | 185 | /* Insertion is made at middle of the access_list. */ |
186 | new->next = point; | |
187 | new->prev = point->prev; | |
718e3744 | 188 | |
d62a17ae | 189 | if (point->prev) |
190 | point->prev->next = new; | |
191 | point->prev = new; | |
718e3744 | 192 | |
d62a17ae | 193 | return new; |
718e3744 | 194 | } |
195 | ||
d62a17ae | 196 | struct community_list *community_list_lookup(struct community_list_handler *ch, |
197 | const char *name, int master) | |
718e3744 | 198 | { |
d62a17ae | 199 | struct community_list *list; |
200 | struct community_list_master *cm; | |
718e3744 | 201 | |
d62a17ae | 202 | if (!name) |
203 | return NULL; | |
718e3744 | 204 | |
d62a17ae | 205 | cm = community_list_master_lookup(ch, master); |
206 | if (!cm) | |
207 | return NULL; | |
718e3744 | 208 | |
d62a17ae | 209 | for (list = cm->num.head; list; list = list->next) |
210 | if (strcmp(list->name, name) == 0) | |
211 | return list; | |
212 | for (list = cm->str.head; list; list = list->next) | |
213 | if (strcmp(list->name, name) == 0) | |
214 | return list; | |
718e3744 | 215 | |
d62a17ae | 216 | return NULL; |
718e3744 | 217 | } |
218 | ||
94f2b392 | 219 | static struct community_list * |
d62a17ae | 220 | community_list_get(struct community_list_handler *ch, const char *name, |
221 | int master) | |
718e3744 | 222 | { |
d62a17ae | 223 | struct community_list *list; |
718e3744 | 224 | |
d62a17ae | 225 | list = community_list_lookup(ch, name, master); |
226 | if (!list) | |
227 | list = community_list_insert(ch, name, master); | |
228 | return list; | |
718e3744 | 229 | } |
230 | ||
d62a17ae | 231 | static void community_list_delete(struct community_list *list) |
718e3744 | 232 | { |
d62a17ae | 233 | struct community_list_list *clist; |
234 | struct community_entry *entry, *next; | |
718e3744 | 235 | |
d62a17ae | 236 | for (entry = list->head; entry; entry = next) { |
237 | next = entry->next; | |
238 | community_entry_free(entry); | |
239 | } | |
718e3744 | 240 | |
d62a17ae | 241 | clist = list->parent; |
718e3744 | 242 | |
d62a17ae | 243 | if (list->next) |
244 | list->next->prev = list->prev; | |
245 | else | |
246 | clist->tail = list->prev; | |
718e3744 | 247 | |
d62a17ae | 248 | if (list->prev) |
249 | list->prev->next = list->next; | |
250 | else | |
251 | clist->head = list->next; | |
718e3744 | 252 | |
d62a17ae | 253 | community_list_free(list); |
718e3744 | 254 | } |
255 | ||
d62a17ae | 256 | static int community_list_empty_p(struct community_list *list) |
718e3744 | 257 | { |
d62a17ae | 258 | return (list->head == NULL && list->tail == NULL) ? 1 : 0; |
718e3744 | 259 | } |
6b0655a2 | 260 | |
718e3744 | 261 | /* Add community-list entry to the list. */ |
d62a17ae | 262 | static void community_list_entry_add(struct community_list *list, |
263 | struct community_entry *entry) | |
718e3744 | 264 | { |
d62a17ae | 265 | entry->next = NULL; |
266 | entry->prev = list->tail; | |
267 | ||
268 | if (list->tail) | |
269 | list->tail->next = entry; | |
270 | else | |
271 | list->head = entry; | |
272 | list->tail = entry; | |
718e3744 | 273 | } |
274 | ||
275 | /* Delete community-list entry from the list. */ | |
d62a17ae | 276 | static void community_list_entry_delete(struct community_list *list, |
3f54c705 | 277 | struct community_entry *entry) |
718e3744 | 278 | { |
d62a17ae | 279 | if (entry->next) |
280 | entry->next->prev = entry->prev; | |
281 | else | |
282 | list->tail = entry->prev; | |
718e3744 | 283 | |
d62a17ae | 284 | if (entry->prev) |
285 | entry->prev->next = entry->next; | |
286 | else | |
287 | list->head = entry->next; | |
718e3744 | 288 | |
d62a17ae | 289 | community_entry_free(entry); |
718e3744 | 290 | |
d62a17ae | 291 | if (community_list_empty_p(list)) |
292 | community_list_delete(list); | |
718e3744 | 293 | } |
294 | ||
295 | /* Lookup community-list entry from the list. */ | |
296 | static struct community_entry * | |
d62a17ae | 297 | community_list_entry_lookup(struct community_list *list, const void *arg, |
298 | int direct) | |
718e3744 | 299 | { |
d62a17ae | 300 | struct community_entry *entry; |
301 | ||
302 | for (entry = list->head; entry; entry = entry->next) { | |
303 | switch (entry->style) { | |
304 | case COMMUNITY_LIST_STANDARD: | |
305 | if (entry->direct == direct | |
306 | && community_cmp(entry->u.com, arg)) | |
307 | return entry; | |
308 | break; | |
309 | case EXTCOMMUNITY_LIST_STANDARD: | |
310 | if (entry->direct == direct | |
311 | && ecommunity_cmp(entry->u.ecom, arg)) | |
312 | return entry; | |
313 | break; | |
314 | case LARGE_COMMUNITY_LIST_STANDARD: | |
315 | if (entry->direct == direct | |
316 | && lcommunity_cmp(entry->u.lcom, arg)) | |
317 | return entry; | |
318 | break; | |
319 | case COMMUNITY_LIST_EXPANDED: | |
320 | case EXTCOMMUNITY_LIST_EXPANDED: | |
321 | case LARGE_COMMUNITY_LIST_EXPANDED: | |
322 | if (entry->direct == direct | |
323 | && strcmp(entry->config, arg) == 0) | |
324 | return entry; | |
325 | break; | |
326 | default: | |
327 | break; | |
328 | } | |
329 | } | |
330 | return NULL; | |
718e3744 | 331 | } |
6b0655a2 | 332 | |
d62a17ae | 333 | static char *community_str_get(struct community *com, int i) |
5cbea288 | 334 | { |
d7c0a89a QY |
335 | uint32_t comval; |
336 | uint16_t as; | |
337 | uint16_t val; | |
d62a17ae | 338 | char *str; |
d62a17ae | 339 | |
d7c0a89a | 340 | memcpy(&comval, com_nthval(com, i), sizeof(uint32_t)); |
d62a17ae | 341 | comval = ntohl(comval); |
342 | ||
343 | switch (comval) { | |
344 | case COMMUNITY_INTERNET: | |
aeab4a80 | 345 | str = XSTRDUP(MTYPE_COMMUNITY_STR, "internet"); |
d62a17ae | 346 | break; |
aa861c10 | 347 | case COMMUNITY_GSHUT: |
aeab4a80 | 348 | str = XSTRDUP(MTYPE_COMMUNITY_STR, "graceful-shutdown"); |
aa861c10 C |
349 | break; |
350 | case COMMUNITY_ACCEPT_OWN: | |
aeab4a80 | 351 | str = XSTRDUP(MTYPE_COMMUNITY_STR, "accept-own"); |
aa861c10 C |
352 | break; |
353 | case COMMUNITY_ROUTE_FILTER_TRANSLATED_v4: | |
aeab4a80 QY |
354 | str = XSTRDUP(MTYPE_COMMUNITY_STR, |
355 | "route-filter-translated-v4"); | |
aa861c10 C |
356 | break; |
357 | case COMMUNITY_ROUTE_FILTER_v4: | |
aeab4a80 | 358 | str = XSTRDUP(MTYPE_COMMUNITY_STR, "route-filter-v4"); |
aa861c10 C |
359 | break; |
360 | case COMMUNITY_ROUTE_FILTER_TRANSLATED_v6: | |
aeab4a80 QY |
361 | str = XSTRDUP(MTYPE_COMMUNITY_STR, |
362 | "route-filter-translated-v6"); | |
aa861c10 C |
363 | break; |
364 | case COMMUNITY_ROUTE_FILTER_v6: | |
aeab4a80 | 365 | str = XSTRDUP(MTYPE_COMMUNITY_STR, "route-filter-v6"); |
aa861c10 C |
366 | break; |
367 | case COMMUNITY_LLGR_STALE: | |
aeab4a80 | 368 | str = XSTRDUP(MTYPE_COMMUNITY_STR, "llgr-stale"); |
aa861c10 C |
369 | break; |
370 | case COMMUNITY_NO_LLGR: | |
aeab4a80 | 371 | str = XSTRDUP(MTYPE_COMMUNITY_STR, "no-llgr"); |
aa861c10 C |
372 | break; |
373 | case COMMUNITY_ACCEPT_OWN_NEXTHOP: | |
aeab4a80 | 374 | str = XSTRDUP(MTYPE_COMMUNITY_STR, "accept-own-nexthop"); |
aa861c10 C |
375 | break; |
376 | case COMMUNITY_BLACKHOLE: | |
aeab4a80 | 377 | str = XSTRDUP(MTYPE_COMMUNITY_STR, "blackhole"); |
aa861c10 | 378 | break; |
d62a17ae | 379 | case COMMUNITY_NO_EXPORT: |
aeab4a80 | 380 | str = XSTRDUP(MTYPE_COMMUNITY_STR, "no-export"); |
d62a17ae | 381 | break; |
382 | case COMMUNITY_NO_ADVERTISE: | |
aeab4a80 | 383 | str = XSTRDUP(MTYPE_COMMUNITY_STR, "no-advertise"); |
d62a17ae | 384 | break; |
385 | case COMMUNITY_LOCAL_AS: | |
aeab4a80 | 386 | str = XSTRDUP(MTYPE_COMMUNITY_STR, "local-AS"); |
d62a17ae | 387 | break; |
aa861c10 | 388 | case COMMUNITY_NO_PEER: |
aeab4a80 | 389 | str = XSTRDUP(MTYPE_COMMUNITY_STR, "no-peer"); |
7f323236 | 390 | break; |
809d6365 | 391 | default: |
aeab4a80 | 392 | str = XSTRDUP(MTYPE_COMMUNITY_STR, "65536:65535"); |
d62a17ae | 393 | as = (comval >> 16) & 0xFFFF; |
394 | val = comval & 0xFFFF; | |
aeab4a80 | 395 | snprintf(str, strlen(str), "%u:%d", as, val); |
d62a17ae | 396 | break; |
397 | } | |
5cbea288 | 398 | |
d62a17ae | 399 | return str; |
5cbea288 DS |
400 | } |
401 | ||
402 | /* Internal function to perform regular expression match for | |
2acb4ac2 | 403 | * a single community. */ |
d62a17ae | 404 | static int community_regexp_include(regex_t *reg, struct community *com, int i) |
5cbea288 | 405 | { |
d62a17ae | 406 | char *str; |
407 | int rv; | |
5cbea288 | 408 | |
d62a17ae | 409 | /* When there is no communities attribute it is treated as empty string. |
410 | */ | |
411 | if (com == NULL || com->size == 0) | |
412 | str = XSTRDUP(MTYPE_COMMUNITY_STR, ""); | |
413 | else | |
414 | str = community_str_get(com, i); | |
5cbea288 | 415 | |
d62a17ae | 416 | /* Regular expression match. */ |
417 | rv = regexec(reg, str, 0, NULL, 0); | |
b84ee83b | 418 | |
d62a17ae | 419 | XFREE(MTYPE_COMMUNITY_STR, str); |
b84ee83b | 420 | |
d62a17ae | 421 | if (rv == 0) |
422 | return 1; | |
5cbea288 | 423 | |
d62a17ae | 424 | /* No match. */ |
425 | return 0; | |
5cbea288 DS |
426 | } |
427 | ||
718e3744 | 428 | /* Internal function to perform regular expression match for community |
429 | attribute. */ | |
d62a17ae | 430 | static int community_regexp_match(struct community *com, regex_t *reg) |
718e3744 | 431 | { |
d62a17ae | 432 | const char *str; |
718e3744 | 433 | |
d62a17ae | 434 | /* When there is no communities attribute it is treated as empty |
435 | string. */ | |
436 | if (com == NULL || com->size == 0) | |
437 | str = ""; | |
438 | else | |
a69ea8ae | 439 | str = community_str(com, false); |
718e3744 | 440 | |
d62a17ae | 441 | /* Regular expression match. */ |
442 | if (regexec(reg, str, 0, NULL, 0) == 0) | |
443 | return 1; | |
718e3744 | 444 | |
d62a17ae | 445 | /* No match. */ |
446 | return 0; | |
718e3744 | 447 | } |
448 | ||
d62a17ae | 449 | static char *lcommunity_str_get(struct lcommunity *lcom, int i) |
57d187bc | 450 | { |
d62a17ae | 451 | struct lcommunity_val lcomval; |
d7c0a89a QY |
452 | uint32_t globaladmin; |
453 | uint32_t localdata1; | |
454 | uint32_t localdata2; | |
d62a17ae | 455 | char *str; |
d7c0a89a | 456 | uint8_t *ptr; |
d62a17ae | 457 | char *pnt; |
458 | ||
ff9104a2 | 459 | ptr = lcom->val + (i * LCOMMUNITY_SIZE); |
d62a17ae | 460 | |
461 | memcpy(&lcomval, ptr, LCOMMUNITY_SIZE); | |
462 | ||
463 | /* Allocate memory. 48 bytes taken off bgp_lcommunity.c */ | |
464 | str = pnt = XMALLOC(MTYPE_LCOMMUNITY_STR, 48); | |
465 | ||
d7c0a89a | 466 | ptr = (uint8_t *)lcomval.val; |
937652c6 DL |
467 | ptr = ptr_get_be32(ptr, &globaladmin); |
468 | ptr = ptr_get_be32(ptr, &localdata1); | |
469 | ptr = ptr_get_be32(ptr, &localdata2); | |
470 | (void)ptr; /* consume value */ | |
d62a17ae | 471 | |
472 | sprintf(pnt, "%u:%u:%u", globaladmin, localdata1, localdata2); | |
473 | pnt += strlen(pnt); | |
474 | *pnt = '\0'; | |
475 | ||
476 | return str; | |
57d187bc JS |
477 | } |
478 | ||
479 | /* Internal function to perform regular expression match for | |
2acb4ac2 | 480 | * a single community. */ |
d62a17ae | 481 | static int lcommunity_regexp_include(regex_t *reg, struct lcommunity *lcom, |
482 | int i) | |
57d187bc | 483 | { |
d62a17ae | 484 | char *str; |
485 | ||
486 | /* When there is no communities attribute it is treated as empty string. | |
487 | */ | |
488 | if (lcom == NULL || lcom->size == 0) | |
489 | str = XSTRDUP(MTYPE_LCOMMUNITY_STR, ""); | |
490 | else | |
491 | str = lcommunity_str_get(lcom, i); | |
492 | ||
493 | /* Regular expression match. */ | |
494 | if (regexec(reg, str, 0, NULL, 0) == 0) { | |
495 | XFREE(MTYPE_LCOMMUNITY_STR, str); | |
496 | return 1; | |
497 | } | |
57d187bc | 498 | |
d62a17ae | 499 | XFREE(MTYPE_LCOMMUNITY_STR, str); |
500 | /* No match. */ | |
501 | return 0; | |
57d187bc JS |
502 | } |
503 | ||
d62a17ae | 504 | static int lcommunity_regexp_match(struct lcommunity *com, regex_t *reg) |
57d187bc | 505 | { |
d62a17ae | 506 | const char *str; |
57d187bc | 507 | |
d62a17ae | 508 | /* When there is no communities attribute it is treated as empty |
509 | string. */ | |
510 | if (com == NULL || com->size == 0) | |
511 | str = ""; | |
512 | else | |
8d9b8ed9 | 513 | str = lcommunity_str(com, false); |
57d187bc | 514 | |
d62a17ae | 515 | /* Regular expression match. */ |
516 | if (regexec(reg, str, 0, NULL, 0) == 0) | |
517 | return 1; | |
57d187bc | 518 | |
d62a17ae | 519 | /* No match. */ |
520 | return 0; | |
57d187bc JS |
521 | } |
522 | ||
523 | ||
d62a17ae | 524 | static int ecommunity_regexp_match(struct ecommunity *ecom, regex_t *reg) |
8708b74f | 525 | { |
d62a17ae | 526 | const char *str; |
8708b74f | 527 | |
d62a17ae | 528 | /* When there is no communities attribute it is treated as empty |
529 | string. */ | |
530 | if (ecom == NULL || ecom->size == 0) | |
531 | str = ""; | |
532 | else | |
533 | str = ecommunity_str(ecom); | |
8708b74f | 534 | |
d62a17ae | 535 | /* Regular expression match. */ |
536 | if (regexec(reg, str, 0, NULL, 0) == 0) | |
537 | return 1; | |
8708b74f | 538 | |
d62a17ae | 539 | /* No match. */ |
540 | return 0; | |
8708b74f | 541 | } |
542 | ||
ffd0c037 | 543 | #if 0 |
718e3744 | 544 | /* Delete community attribute using regular expression match. Return |
545 | modified communites attribute. */ | |
546 | static struct community * | |
8708b74f | 547 | community_regexp_delete (struct community *com, regex_t * reg) |
718e3744 | 548 | { |
aa861c10 C |
549 | int i; |
550 | uint32_t comval; | |
551 | /* Maximum is "65535:65535" + '\0'. */ | |
552 | char c[12]; | |
553 | const char *str; | |
554 | ||
555 | if (!com) | |
556 | return NULL; | |
557 | ||
558 | i = 0; | |
559 | while (i < com->size) | |
560 | { | |
561 | memcpy (&comval, com_nthval (com, i), sizeof (uint32_t)); | |
562 | comval = ntohl (comval); | |
563 | ||
564 | switch (comval) { | |
565 | case COMMUNITY_INTERNET: | |
566 | str = "internet"; | |
567 | break; | |
568 | case COMMUNITY_ACCEPT_OWN: | |
569 | str = "accept-own"; | |
570 | break; | |
571 | case COMMUNITY_ROUTE_FILTER_TRANSLATED_v4: | |
572 | str = "route-filter-translated-v4"; | |
573 | break; | |
574 | case COMMUNITY_ROUTE_FILTER_v4: | |
575 | str = "route-filter-v4"; | |
576 | break; | |
577 | case COMMUNITY_ROUTE_FILTER_TRANSLATED_v6: | |
578 | str = "route-filter-translated-v6"; | |
579 | break; | |
580 | case COMMUNITY_ROUTE_FILTER_v6: | |
581 | str = "route-filter-v6"; | |
582 | break; | |
583 | case COMMUNITY_LLGR_STALE: | |
584 | str = "llgr-stale"; | |
585 | break; | |
586 | case COMMUNITY_NO_LLGR: | |
587 | str = "no-llgr"; | |
588 | break; | |
589 | case COMMUNITY_ACCEPT_OWN_NEXTHOP: | |
590 | str = "accept-own-nexthop"; | |
591 | break; | |
592 | case COMMUNITY_BLACKHOLE: | |
593 | str = "blackhole"; | |
594 | break; | |
595 | case COMMUNITY_NO_EXPORT: | |
596 | str = "no-export"; | |
597 | break; | |
598 | case COMMUNITY_NO_ADVERTISE: | |
599 | str = "no-advertise"; | |
600 | break; | |
601 | case COMMUNITY_LOCAL_AS: | |
602 | str = "local-AS"; | |
603 | break; | |
604 | case COMMUNITY_NO_PEER: | |
605 | str = "no-peer"; | |
606 | break; | |
607 | default: | |
608 | sprintf (c, "%d:%d", (comval >> 16) & 0xFFFF, | |
609 | comval & 0xFFFF); | |
610 | str = c; | |
611 | break; | |
612 | } | |
613 | ||
614 | if (regexec (reg, str, 0, NULL, 0) == 0) | |
615 | community_del_val (com, com_nthval (com, i)); | |
616 | else | |
617 | i++; | |
618 | } | |
619 | return com; | |
718e3744 | 620 | } |
ffd0c037 | 621 | #endif |
718e3744 | 622 | |
623 | /* When given community attribute matches to the community-list return | |
624 | 1 else return 0. */ | |
d62a17ae | 625 | int community_list_match(struct community *com, struct community_list *list) |
718e3744 | 626 | { |
d62a17ae | 627 | struct community_entry *entry; |
628 | ||
629 | for (entry = list->head; entry; entry = entry->next) { | |
630 | if (entry->any) | |
631 | return entry->direct == COMMUNITY_PERMIT ? 1 : 0; | |
632 | ||
633 | if (entry->style == COMMUNITY_LIST_STANDARD) { | |
634 | if (community_include(entry->u.com, COMMUNITY_INTERNET)) | |
635 | return entry->direct == COMMUNITY_PERMIT ? 1 | |
636 | : 0; | |
637 | ||
638 | if (community_match(com, entry->u.com)) | |
639 | return entry->direct == COMMUNITY_PERMIT ? 1 | |
640 | : 0; | |
641 | } else if (entry->style == COMMUNITY_LIST_EXPANDED) { | |
642 | if (community_regexp_match(com, entry->reg)) | |
643 | return entry->direct == COMMUNITY_PERMIT ? 1 | |
644 | : 0; | |
645 | } | |
646 | } | |
647 | return 0; | |
8708b74f | 648 | } |
649 | ||
d62a17ae | 650 | int lcommunity_list_match(struct lcommunity *lcom, struct community_list *list) |
57d187bc | 651 | { |
d62a17ae | 652 | struct community_entry *entry; |
653 | ||
654 | for (entry = list->head; entry; entry = entry->next) { | |
655 | if (entry->any) | |
656 | return entry->direct == COMMUNITY_PERMIT ? 1 : 0; | |
657 | ||
658 | if (entry->style == LARGE_COMMUNITY_LIST_STANDARD) { | |
659 | if (lcommunity_match(lcom, entry->u.lcom)) | |
660 | return entry->direct == COMMUNITY_PERMIT ? 1 | |
661 | : 0; | |
662 | } else if (entry->style == LARGE_COMMUNITY_LIST_EXPANDED) { | |
663 | if (lcommunity_regexp_match(lcom, entry->reg)) | |
664 | return entry->direct == COMMUNITY_PERMIT ? 1 | |
665 | : 0; | |
666 | } | |
667 | } | |
668 | return 0; | |
57d187bc JS |
669 | } |
670 | ||
d62a17ae | 671 | int ecommunity_list_match(struct ecommunity *ecom, struct community_list *list) |
8708b74f | 672 | { |
d62a17ae | 673 | struct community_entry *entry; |
674 | ||
675 | for (entry = list->head; entry; entry = entry->next) { | |
676 | if (entry->any) | |
677 | return entry->direct == COMMUNITY_PERMIT ? 1 : 0; | |
678 | ||
679 | if (entry->style == EXTCOMMUNITY_LIST_STANDARD) { | |
680 | if (ecommunity_match(ecom, entry->u.ecom)) | |
681 | return entry->direct == COMMUNITY_PERMIT ? 1 | |
682 | : 0; | |
683 | } else if (entry->style == EXTCOMMUNITY_LIST_EXPANDED) { | |
684 | if (ecommunity_regexp_match(ecom, entry->reg)) | |
685 | return entry->direct == COMMUNITY_PERMIT ? 1 | |
686 | : 0; | |
687 | } | |
688 | } | |
689 | return 0; | |
718e3744 | 690 | } |
691 | ||
692 | /* Perform exact matching. In case of expanded community-list, do | |
693 | same thing as community_list_match(). */ | |
d62a17ae | 694 | int community_list_exact_match(struct community *com, |
695 | struct community_list *list) | |
718e3744 | 696 | { |
d62a17ae | 697 | struct community_entry *entry; |
698 | ||
699 | for (entry = list->head; entry; entry = entry->next) { | |
700 | if (entry->any) | |
701 | return entry->direct == COMMUNITY_PERMIT ? 1 : 0; | |
702 | ||
703 | if (entry->style == COMMUNITY_LIST_STANDARD) { | |
704 | if (community_include(entry->u.com, COMMUNITY_INTERNET)) | |
705 | return entry->direct == COMMUNITY_PERMIT ? 1 | |
706 | : 0; | |
707 | ||
708 | if (community_cmp(com, entry->u.com)) | |
709 | return entry->direct == COMMUNITY_PERMIT ? 1 | |
710 | : 0; | |
711 | } else if (entry->style == COMMUNITY_LIST_EXPANDED) { | |
712 | if (community_regexp_match(com, entry->reg)) | |
713 | return entry->direct == COMMUNITY_PERMIT ? 1 | |
714 | : 0; | |
715 | } | |
716 | } | |
717 | return 0; | |
718e3744 | 718 | } |
719 | ||
8708b74f | 720 | /* Delete all permitted communities in the list from com. */ |
d62a17ae | 721 | struct community *community_list_match_delete(struct community *com, |
722 | struct community_list *list) | |
718e3744 | 723 | { |
d62a17ae | 724 | struct community_entry *entry; |
d7c0a89a QY |
725 | uint32_t val; |
726 | uint32_t com_index_to_delete[com->size]; | |
d62a17ae | 727 | int delete_index = 0; |
728 | int i; | |
729 | ||
730 | /* Loop over each community value and evaluate each against the | |
731 | * community-list. If we need to delete a community value add its index | |
ceead39c | 732 | * to com_index_to_delete. |
d62a17ae | 733 | */ |
734 | for (i = 0; i < com->size; i++) { | |
735 | val = community_val_get(com, i); | |
736 | ||
737 | for (entry = list->head; entry; entry = entry->next) { | |
738 | if (entry->any) { | |
739 | if (entry->direct == COMMUNITY_PERMIT) { | |
740 | com_index_to_delete[delete_index] = i; | |
741 | delete_index++; | |
742 | } | |
743 | break; | |
744 | } | |
745 | ||
746 | else if ((entry->style == COMMUNITY_LIST_STANDARD) | |
747 | && (community_include(entry->u.com, | |
748 | COMMUNITY_INTERNET) | |
749 | || community_include(entry->u.com, val))) { | |
750 | if (entry->direct == COMMUNITY_PERMIT) { | |
751 | com_index_to_delete[delete_index] = i; | |
752 | delete_index++; | |
753 | } | |
754 | break; | |
755 | } | |
756 | ||
757 | else if ((entry->style == COMMUNITY_LIST_EXPANDED) | |
758 | && community_regexp_include(entry->reg, com, | |
759 | i)) { | |
760 | if (entry->direct == COMMUNITY_PERMIT) { | |
761 | com_index_to_delete[delete_index] = i; | |
762 | delete_index++; | |
763 | } | |
764 | break; | |
765 | } | |
766 | } | |
767 | } | |
5cbea288 | 768 | |
d62a17ae | 769 | /* Delete all of the communities we flagged for deletion */ |
770 | for (i = delete_index - 1; i >= 0; i--) { | |
771 | val = community_val_get(com, com_index_to_delete[i]); | |
772 | community_del_val(com, &val); | |
773 | } | |
5cbea288 | 774 | |
d62a17ae | 775 | return com; |
718e3744 | 776 | } |
777 | ||
778 | /* To avoid duplicated entry in the community-list, this function | |
779 | compares specified entry to existing entry. */ | |
d62a17ae | 780 | static int community_list_dup_check(struct community_list *list, |
781 | struct community_entry *new) | |
718e3744 | 782 | { |
d62a17ae | 783 | struct community_entry *entry; |
784 | ||
785 | for (entry = list->head; entry; entry = entry->next) { | |
786 | if (entry->style != new->style) | |
787 | continue; | |
788 | ||
789 | if (entry->direct != new->direct) | |
790 | continue; | |
791 | ||
792 | if (entry->any != new->any) | |
793 | continue; | |
794 | ||
795 | if (entry->any) | |
796 | return 1; | |
797 | ||
798 | switch (entry->style) { | |
799 | case COMMUNITY_LIST_STANDARD: | |
800 | if (community_cmp(entry->u.com, new->u.com)) | |
801 | return 1; | |
802 | break; | |
803 | case LARGE_COMMUNITY_LIST_STANDARD: | |
804 | if (lcommunity_cmp(entry->u.lcom, new->u.lcom)) | |
805 | return 1; | |
806 | break; | |
807 | case EXTCOMMUNITY_LIST_STANDARD: | |
808 | if (ecommunity_cmp(entry->u.ecom, new->u.ecom)) | |
809 | return 1; | |
810 | break; | |
811 | case COMMUNITY_LIST_EXPANDED: | |
812 | case EXTCOMMUNITY_LIST_EXPANDED: | |
813 | case LARGE_COMMUNITY_LIST_EXPANDED: | |
814 | if (strcmp(entry->config, new->config) == 0) | |
815 | return 1; | |
816 | break; | |
817 | default: | |
818 | break; | |
819 | } | |
820 | } | |
821 | return 0; | |
718e3744 | 822 | } |
6b0655a2 | 823 | |
718e3744 | 824 | /* Set community-list. */ |
d62a17ae | 825 | int community_list_set(struct community_list_handler *ch, const char *name, |
826 | const char *str, int direct, int style) | |
718e3744 | 827 | { |
d62a17ae | 828 | struct community_entry *entry = NULL; |
829 | struct community_list *list; | |
830 | struct community *com = NULL; | |
831 | regex_t *regex = NULL; | |
832 | ||
833 | /* Get community list. */ | |
834 | list = community_list_get(ch, name, COMMUNITY_LIST_MASTER); | |
835 | ||
836 | /* When community-list already has entry, new entry should have same | |
837 | style. If you want to have mixed style community-list, you can | |
838 | comment out this check. */ | |
839 | if (!community_list_empty_p(list)) { | |
840 | struct community_entry *first; | |
841 | ||
842 | first = list->head; | |
843 | ||
844 | if (style != first->style) { | |
845 | return (first->style == COMMUNITY_LIST_STANDARD | |
846 | ? COMMUNITY_LIST_ERR_STANDARD_CONFLICT | |
847 | : COMMUNITY_LIST_ERR_EXPANDED_CONFLICT); | |
848 | } | |
fee6e4e4 | 849 | } |
718e3744 | 850 | |
d62a17ae | 851 | if (str) { |
852 | if (style == COMMUNITY_LIST_STANDARD) | |
853 | com = community_str2com(str); | |
854 | else | |
855 | regex = bgp_regcomp(str); | |
8708b74f | 856 | |
d62a17ae | 857 | if (!com && !regex) |
858 | return COMMUNITY_LIST_ERR_MALFORMED_VAL; | |
859 | } | |
718e3744 | 860 | |
d62a17ae | 861 | entry = community_entry_new(); |
862 | entry->direct = direct; | |
863 | entry->style = style; | |
864 | entry->any = (str ? 0 : 1); | |
865 | entry->u.com = com; | |
866 | entry->reg = regex; | |
867 | entry->config = | |
868 | (regex ? XSTRDUP(MTYPE_COMMUNITY_LIST_CONFIG, str) : NULL); | |
869 | ||
870 | /* Do not put duplicated community entry. */ | |
871 | if (community_list_dup_check(list, entry)) | |
872 | community_entry_free(entry); | |
873 | else { | |
874 | community_list_entry_add(list, entry); | |
875 | route_map_notify_dependencies(name, RMAP_EVENT_CLIST_ADDED); | |
876 | } | |
718e3744 | 877 | |
d62a17ae | 878 | return 0; |
718e3744 | 879 | } |
880 | ||
813d4307 | 881 | /* Unset community-list */ |
d62a17ae | 882 | int community_list_unset(struct community_list_handler *ch, const char *name, |
7298a8e1 | 883 | const char *str, int direct, int style) |
718e3744 | 884 | { |
d62a17ae | 885 | struct community_entry *entry = NULL; |
886 | struct community_list *list; | |
887 | struct community *com = NULL; | |
888 | ||
889 | /* Lookup community list. */ | |
890 | list = community_list_lookup(ch, name, COMMUNITY_LIST_MASTER); | |
891 | if (list == NULL) | |
892 | return COMMUNITY_LIST_ERR_CANT_FIND_LIST; | |
893 | ||
894 | /* Delete all of entry belongs to this community-list. */ | |
7298a8e1 | 895 | if (!str) { |
d62a17ae | 896 | community_list_delete(list); |
897 | route_map_notify_dependencies(name, RMAP_EVENT_CLIST_DELETED); | |
898 | return 0; | |
899 | } | |
718e3744 | 900 | |
7298a8e1 QY |
901 | if (style == COMMUNITY_LIST_STANDARD) |
902 | com = community_str2com(str); | |
718e3744 | 903 | |
d62a17ae | 904 | if (com) { |
905 | entry = community_list_entry_lookup(list, com, direct); | |
906 | community_free(com); | |
907 | } else | |
908 | entry = community_list_entry_lookup(list, str, direct); | |
fee6e4e4 | 909 | |
d62a17ae | 910 | if (!entry) |
911 | return COMMUNITY_LIST_ERR_CANT_FIND_LIST; | |
718e3744 | 912 | |
3f54c705 | 913 | community_list_entry_delete(list, entry); |
d62a17ae | 914 | route_map_notify_dependencies(name, RMAP_EVENT_CLIST_DELETED); |
718e3744 | 915 | |
d62a17ae | 916 | return 0; |
718e3744 | 917 | } |
918 | ||
57d187bc | 919 | /* Delete all permitted large communities in the list from com. */ |
d62a17ae | 920 | struct lcommunity *lcommunity_list_match_delete(struct lcommunity *lcom, |
921 | struct community_list *list) | |
57d187bc | 922 | { |
d62a17ae | 923 | struct community_entry *entry; |
d7c0a89a QY |
924 | uint32_t com_index_to_delete[lcom->size]; |
925 | uint8_t *ptr; | |
d62a17ae | 926 | int delete_index = 0; |
927 | int i; | |
928 | ||
929 | /* Loop over each lcommunity value and evaluate each against the | |
930 | * community-list. If we need to delete a community value add its index | |
ceead39c | 931 | * to com_index_to_delete. |
d62a17ae | 932 | */ |
d62a17ae | 933 | for (i = 0; i < lcom->size; i++) { |
534fc195 | 934 | ptr = lcom->val + (i * LCOMMUNITY_SIZE); |
d62a17ae | 935 | for (entry = list->head; entry; entry = entry->next) { |
936 | if (entry->any) { | |
937 | if (entry->direct == COMMUNITY_PERMIT) { | |
938 | com_index_to_delete[delete_index] = i; | |
939 | delete_index++; | |
940 | } | |
941 | break; | |
942 | } | |
943 | ||
944 | else if ((entry->style == LARGE_COMMUNITY_LIST_STANDARD) | |
945 | && lcommunity_include(entry->u.lcom, ptr)) { | |
946 | if (entry->direct == COMMUNITY_PERMIT) { | |
947 | com_index_to_delete[delete_index] = i; | |
948 | delete_index++; | |
949 | } | |
950 | break; | |
951 | } | |
952 | ||
cde8d696 | 953 | else if ((entry->style == LARGE_COMMUNITY_LIST_EXPANDED) |
d62a17ae | 954 | && lcommunity_regexp_include(entry->reg, lcom, |
955 | i)) { | |
956 | if (entry->direct == COMMUNITY_PERMIT) { | |
957 | com_index_to_delete[delete_index] = i; | |
958 | delete_index++; | |
959 | } | |
960 | break; | |
961 | } | |
962 | } | |
963 | } | |
57d187bc | 964 | |
d62a17ae | 965 | /* Delete all of the communities we flagged for deletion */ |
d62a17ae | 966 | for (i = delete_index - 1; i >= 0; i--) { |
0a7dce9b | 967 | ptr = lcom->val + (com_index_to_delete[i] * LCOMMUNITY_SIZE); |
d62a17ae | 968 | lcommunity_del_val(lcom, ptr); |
969 | } | |
57d187bc | 970 | |
d62a17ae | 971 | return lcom; |
57d187bc JS |
972 | } |
973 | ||
974 | /* Set lcommunity-list. */ | |
d62a17ae | 975 | int lcommunity_list_set(struct community_list_handler *ch, const char *name, |
976 | const char *str, int direct, int style) | |
57d187bc | 977 | { |
d62a17ae | 978 | struct community_entry *entry = NULL; |
979 | struct community_list *list; | |
980 | struct lcommunity *lcom = NULL; | |
981 | regex_t *regex = NULL; | |
982 | ||
983 | /* Get community list. */ | |
984 | list = community_list_get(ch, name, LARGE_COMMUNITY_LIST_MASTER); | |
985 | ||
986 | /* When community-list already has entry, new entry should have same | |
987 | style. If you want to have mixed style community-list, you can | |
988 | comment out this check. */ | |
989 | if (!community_list_empty_p(list)) { | |
990 | struct community_entry *first; | |
991 | ||
992 | first = list->head; | |
993 | ||
994 | if (style != first->style) { | |
995 | return (first->style == COMMUNITY_LIST_STANDARD | |
996 | ? COMMUNITY_LIST_ERR_STANDARD_CONFLICT | |
997 | : COMMUNITY_LIST_ERR_EXPANDED_CONFLICT); | |
998 | } | |
999 | } | |
57d187bc | 1000 | |
d62a17ae | 1001 | if (str) { |
1002 | if (style == LARGE_COMMUNITY_LIST_STANDARD) | |
1003 | lcom = lcommunity_str2com(str); | |
1004 | else | |
1005 | regex = bgp_regcomp(str); | |
57d187bc | 1006 | |
d62a17ae | 1007 | if (!lcom && !regex) |
1008 | return COMMUNITY_LIST_ERR_MALFORMED_VAL; | |
1009 | } | |
57d187bc | 1010 | |
d62a17ae | 1011 | entry = community_entry_new(); |
1012 | entry->direct = direct; | |
1013 | entry->style = style; | |
1014 | entry->any = (str ? 0 : 1); | |
1015 | entry->u.lcom = lcom; | |
1016 | entry->reg = regex; | |
8d9b8ed9 PM |
1017 | entry->config = |
1018 | (regex ? XSTRDUP(MTYPE_COMMUNITY_LIST_CONFIG, str) : NULL); | |
d62a17ae | 1019 | |
1020 | /* Do not put duplicated community entry. */ | |
1021 | if (community_list_dup_check(list, entry)) | |
1022 | community_entry_free(entry); | |
1023 | else | |
1024 | community_list_entry_add(list, entry); | |
1025 | ||
1026 | return 0; | |
57d187bc JS |
1027 | } |
1028 | ||
1029 | /* Unset community-list. When str is NULL, delete all of | |
1030 | community-list entry belongs to the specified name. */ | |
d62a17ae | 1031 | int lcommunity_list_unset(struct community_list_handler *ch, const char *name, |
1032 | const char *str, int direct, int style) | |
57d187bc | 1033 | { |
d62a17ae | 1034 | struct community_entry *entry = NULL; |
1035 | struct community_list *list; | |
1036 | struct lcommunity *lcom = NULL; | |
1037 | regex_t *regex = NULL; | |
1038 | ||
1039 | /* Lookup community list. */ | |
1040 | list = community_list_lookup(ch, name, LARGE_COMMUNITY_LIST_MASTER); | |
1041 | if (list == NULL) | |
1042 | return COMMUNITY_LIST_ERR_CANT_FIND_LIST; | |
1043 | ||
1044 | /* Delete all of entry belongs to this community-list. */ | |
1045 | if (!str) { | |
1046 | community_list_delete(list); | |
1047 | return 0; | |
1048 | } | |
57d187bc | 1049 | |
d62a17ae | 1050 | if (style == LARGE_COMMUNITY_LIST_STANDARD) |
1051 | lcom = lcommunity_str2com(str); | |
1052 | else | |
1053 | regex = bgp_regcomp(str); | |
57d187bc | 1054 | |
d62a17ae | 1055 | if (!lcom && !regex) |
1056 | return COMMUNITY_LIST_ERR_MALFORMED_VAL; | |
57d187bc | 1057 | |
d62a17ae | 1058 | if (lcom) |
1059 | entry = community_list_entry_lookup(list, lcom, direct); | |
1060 | else | |
1061 | entry = community_list_entry_lookup(list, str, direct); | |
57d187bc | 1062 | |
d62a17ae | 1063 | if (lcom) |
1064 | lcommunity_free(&lcom); | |
1065 | if (regex) | |
1066 | bgp_regex_free(regex); | |
57d187bc | 1067 | |
d62a17ae | 1068 | if (!entry) |
1069 | return COMMUNITY_LIST_ERR_CANT_FIND_LIST; | |
57d187bc | 1070 | |
3f54c705 | 1071 | community_list_entry_delete(list, entry); |
57d187bc | 1072 | |
d62a17ae | 1073 | return 0; |
57d187bc JS |
1074 | } |
1075 | ||
718e3744 | 1076 | /* Set extcommunity-list. */ |
d62a17ae | 1077 | int extcommunity_list_set(struct community_list_handler *ch, const char *name, |
1078 | const char *str, int direct, int style) | |
718e3744 | 1079 | { |
d62a17ae | 1080 | struct community_entry *entry = NULL; |
1081 | struct community_list *list; | |
1082 | struct ecommunity *ecom = NULL; | |
1083 | regex_t *regex = NULL; | |
718e3744 | 1084 | |
fa301630 | 1085 | if (str == NULL) |
1086 | return COMMUNITY_LIST_ERR_MALFORMED_VAL; | |
1087 | ||
d62a17ae | 1088 | /* Get community list. */ |
1089 | list = community_list_get(ch, name, EXTCOMMUNITY_LIST_MASTER); | |
718e3744 | 1090 | |
d62a17ae | 1091 | /* When community-list already has entry, new entry should have same |
1092 | style. If you want to have mixed style community-list, you can | |
1093 | comment out this check. */ | |
1094 | if (!community_list_empty_p(list)) { | |
1095 | struct community_entry *first; | |
718e3744 | 1096 | |
d62a17ae | 1097 | first = list->head; |
718e3744 | 1098 | |
d62a17ae | 1099 | if (style != first->style) { |
1100 | return (first->style == EXTCOMMUNITY_LIST_STANDARD | |
1101 | ? COMMUNITY_LIST_ERR_STANDARD_CONFLICT | |
1102 | : COMMUNITY_LIST_ERR_EXPANDED_CONFLICT); | |
1103 | } | |
fee6e4e4 | 1104 | } |
718e3744 | 1105 | |
d62a17ae | 1106 | if (style == EXTCOMMUNITY_LIST_STANDARD) |
1107 | ecom = ecommunity_str2com(str, 0, 1); | |
1108 | else | |
1109 | regex = bgp_regcomp(str); | |
1110 | ||
1111 | if (!ecom && !regex) | |
1112 | return COMMUNITY_LIST_ERR_MALFORMED_VAL; | |
1113 | ||
1114 | if (ecom) | |
1115 | ecom->str = | |
1116 | ecommunity_ecom2str(ecom, ECOMMUNITY_FORMAT_DISPLAY, 0); | |
1117 | ||
1118 | entry = community_entry_new(); | |
1119 | entry->direct = direct; | |
1120 | entry->style = style; | |
fa301630 | 1121 | entry->any = 0; |
d62a17ae | 1122 | if (ecom) |
1123 | entry->config = ecommunity_ecom2str( | |
1124 | ecom, ECOMMUNITY_FORMAT_COMMUNITY_LIST, 0); | |
1125 | else if (regex) | |
1126 | entry->config = XSTRDUP(MTYPE_COMMUNITY_LIST_CONFIG, str); | |
1127 | ||
1128 | entry->u.ecom = ecom; | |
1129 | entry->reg = regex; | |
1130 | ||
1131 | /* Do not put duplicated community entry. */ | |
1132 | if (community_list_dup_check(list, entry)) | |
1133 | community_entry_free(entry); | |
1134 | else { | |
1135 | community_list_entry_add(list, entry); | |
1136 | route_map_notify_dependencies(name, RMAP_EVENT_ECLIST_ADDED); | |
1137 | } | |
718e3744 | 1138 | |
d62a17ae | 1139 | return 0; |
718e3744 | 1140 | } |
1141 | ||
7298a8e1 QY |
1142 | /* Unset extcommunity-list. |
1143 | * | |
1144 | * When str is NULL, delete all extcommunity-list entries belonging to the | |
1145 | * specified name. | |
1146 | */ | |
d62a17ae | 1147 | int extcommunity_list_unset(struct community_list_handler *ch, const char *name, |
7298a8e1 | 1148 | const char *str, int direct, int style) |
718e3744 | 1149 | { |
d62a17ae | 1150 | struct community_entry *entry = NULL; |
1151 | struct community_list *list; | |
1152 | struct ecommunity *ecom = NULL; | |
1153 | ||
1154 | /* Lookup extcommunity list. */ | |
1155 | list = community_list_lookup(ch, name, EXTCOMMUNITY_LIST_MASTER); | |
1156 | if (list == NULL) | |
1157 | return COMMUNITY_LIST_ERR_CANT_FIND_LIST; | |
1158 | ||
1159 | /* Delete all of entry belongs to this extcommunity-list. */ | |
7298a8e1 | 1160 | if (!str) { |
d62a17ae | 1161 | community_list_delete(list); |
1162 | route_map_notify_dependencies(name, RMAP_EVENT_ECLIST_DELETED); | |
1163 | return 0; | |
1164 | } | |
718e3744 | 1165 | |
7298a8e1 QY |
1166 | if (style == EXTCOMMUNITY_LIST_STANDARD) |
1167 | ecom = ecommunity_str2com(str, 0, 1); | |
718e3744 | 1168 | |
d62a17ae | 1169 | if (ecom) { |
1170 | entry = community_list_entry_lookup(list, ecom, direct); | |
1171 | ecommunity_free(&ecom); | |
1172 | } else | |
1173 | entry = community_list_entry_lookup(list, str, direct); | |
fee6e4e4 | 1174 | |
d62a17ae | 1175 | if (!entry) |
1176 | return COMMUNITY_LIST_ERR_CANT_FIND_LIST; | |
718e3744 | 1177 | |
3f54c705 | 1178 | community_list_entry_delete(list, entry); |
d62a17ae | 1179 | route_map_notify_dependencies(name, RMAP_EVENT_ECLIST_DELETED); |
718e3744 | 1180 | |
d62a17ae | 1181 | return 0; |
718e3744 | 1182 | } |
1183 | ||
1184 | /* Initializa community-list. Return community-list handler. */ | |
d62a17ae | 1185 | struct community_list_handler *community_list_init(void) |
718e3744 | 1186 | { |
d62a17ae | 1187 | struct community_list_handler *ch; |
1188 | ch = XCALLOC(MTYPE_COMMUNITY_LIST_HANDLER, | |
1189 | sizeof(struct community_list_handler)); | |
1190 | return ch; | |
718e3744 | 1191 | } |
1192 | ||
1193 | /* Terminate community-list. */ | |
d62a17ae | 1194 | void community_list_terminate(struct community_list_handler *ch) |
718e3744 | 1195 | { |
d62a17ae | 1196 | struct community_list_master *cm; |
1197 | struct community_list *list; | |
1198 | ||
1199 | cm = &ch->community_list; | |
1200 | while ((list = cm->num.head) != NULL) | |
1201 | community_list_delete(list); | |
1202 | while ((list = cm->str.head) != NULL) | |
1203 | community_list_delete(list); | |
1204 | ||
1205 | cm = &ch->lcommunity_list; | |
1206 | while ((list = cm->num.head) != NULL) | |
1207 | community_list_delete(list); | |
1208 | while ((list = cm->str.head) != NULL) | |
1209 | community_list_delete(list); | |
1210 | ||
1211 | cm = &ch->extcommunity_list; | |
1212 | while ((list = cm->num.head) != NULL) | |
1213 | community_list_delete(list); | |
1214 | while ((list = cm->str.head) != NULL) | |
1215 | community_list_delete(list); | |
1216 | ||
1217 | XFREE(MTYPE_COMMUNITY_LIST_HANDLER, ch); | |
718e3744 | 1218 | } |