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718e3744 | 1 | /* BGP community-list and extcommunity-list. |
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 | |
17 | along with GNU Zebra; see the file COPYING. If not, write to the Free | |
18 | Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA | |
19 | 02111-1307, USA. */ | |
20 | ||
21 | #include <zebra.h> | |
22 | ||
23 | #include "command.h" | |
24 | #include "prefix.h" | |
25 | #include "memory.h" | |
3f9c7369 | 26 | #include "queue.h" |
718e3744 | 27 | |
28 | #include "bgpd/bgpd.h" | |
29 | #include "bgpd/bgp_community.h" | |
30 | #include "bgpd/bgp_ecommunity.h" | |
31 | #include "bgpd/bgp_aspath.h" | |
32 | #include "bgpd/bgp_regex.h" | |
33 | #include "bgpd/bgp_clist.h" | |
6b0655a2 | 34 | |
718e3744 | 35 | /* Lookup master structure for community-list or |
36 | extcommunity-list. */ | |
37 | struct community_list_master * | |
fee6e4e4 | 38 | community_list_master_lookup (struct community_list_handler *ch, int master) |
718e3744 | 39 | { |
40 | if (ch) | |
fee6e4e4 | 41 | switch (master) |
718e3744 | 42 | { |
fee6e4e4 | 43 | case COMMUNITY_LIST_MASTER: |
44 | return &ch->community_list; | |
fee6e4e4 | 45 | case EXTCOMMUNITY_LIST_MASTER: |
46 | return &ch->extcommunity_list; | |
718e3744 | 47 | } |
48 | return NULL; | |
49 | } | |
50 | ||
51 | /* Allocate a new community list entry. */ | |
94f2b392 | 52 | static struct community_entry * |
66e5cd87 | 53 | community_entry_new (void) |
718e3744 | 54 | { |
393deb9b | 55 | return XCALLOC (MTYPE_COMMUNITY_LIST_ENTRY, sizeof (struct community_entry)); |
718e3744 | 56 | } |
57 | ||
58 | /* Free community list entry. */ | |
94f2b392 | 59 | static void |
718e3744 | 60 | community_entry_free (struct community_entry *entry) |
61 | { | |
62 | switch (entry->style) | |
63 | { | |
64 | case COMMUNITY_LIST_STANDARD: | |
65 | if (entry->u.com) | |
8708b74f | 66 | community_free (entry->u.com); |
718e3744 | 67 | break; |
68 | case EXTCOMMUNITY_LIST_STANDARD: | |
69 | /* In case of standard extcommunity-list, configuration string | |
8708b74f | 70 | is made by ecommunity_ecom2str(). */ |
718e3744 | 71 | if (entry->config) |
8708b74f | 72 | XFREE (MTYPE_ECOMMUNITY_STR, entry->config); |
718e3744 | 73 | if (entry->u.ecom) |
f6f434b2 | 74 | ecommunity_free (&entry->u.ecom); |
718e3744 | 75 | break; |
76 | case COMMUNITY_LIST_EXPANDED: | |
77 | case EXTCOMMUNITY_LIST_EXPANDED: | |
78 | if (entry->config) | |
8708b74f | 79 | XFREE (MTYPE_COMMUNITY_LIST_CONFIG, entry->config); |
718e3744 | 80 | if (entry->reg) |
8708b74f | 81 | bgp_regex_free (entry->reg); |
718e3744 | 82 | default: |
83 | break; | |
84 | } | |
85 | XFREE (MTYPE_COMMUNITY_LIST_ENTRY, entry); | |
86 | } | |
87 | ||
88 | /* Allocate a new community-list. */ | |
94f2b392 | 89 | static struct community_list * |
66e5cd87 | 90 | community_list_new (void) |
718e3744 | 91 | { |
393deb9b | 92 | return XCALLOC (MTYPE_COMMUNITY_LIST, sizeof (struct community_list)); |
718e3744 | 93 | } |
94 | ||
95 | /* Free community-list. */ | |
94f2b392 | 96 | static void |
718e3744 | 97 | community_list_free (struct community_list *list) |
98 | { | |
99 | if (list->name) | |
100 | XFREE (MTYPE_COMMUNITY_LIST_NAME, list->name); | |
101 | XFREE (MTYPE_COMMUNITY_LIST, list); | |
102 | } | |
103 | ||
94f2b392 | 104 | static struct community_list * |
718e3744 | 105 | community_list_insert (struct community_list_handler *ch, |
fee6e4e4 | 106 | const char *name, int master) |
718e3744 | 107 | { |
fd79ac91 | 108 | size_t i; |
718e3744 | 109 | long number; |
110 | struct community_list *new; | |
111 | struct community_list *point; | |
112 | struct community_list_list *list; | |
113 | struct community_list_master *cm; | |
114 | ||
115 | /* Lookup community-list master. */ | |
fee6e4e4 | 116 | cm = community_list_master_lookup (ch, master); |
8708b74f | 117 | if (!cm) |
718e3744 | 118 | return NULL; |
119 | ||
120 | /* Allocate new community_list and copy given name. */ | |
121 | new = community_list_new (); | |
122 | new->name = XSTRDUP (MTYPE_COMMUNITY_LIST_NAME, name); | |
123 | ||
124 | /* If name is made by all digit character. We treat it as | |
125 | number. */ | |
126 | for (number = 0, i = 0; i < strlen (name); i++) | |
127 | { | |
128 | if (isdigit ((int) name[i])) | |
8708b74f | 129 | number = (number * 10) + (name[i] - '0'); |
718e3744 | 130 | else |
8708b74f | 131 | break; |
718e3744 | 132 | } |
133 | ||
134 | /* In case of name is all digit character */ | |
135 | if (i == strlen (name)) | |
136 | { | |
137 | new->sort = COMMUNITY_LIST_NUMBER; | |
138 | ||
139 | /* Set access_list to number list. */ | |
140 | list = &cm->num; | |
141 | ||
142 | for (point = list->head; point; point = point->next) | |
8708b74f | 143 | if (atol (point->name) >= number) |
144 | break; | |
718e3744 | 145 | } |
146 | else | |
147 | { | |
148 | new->sort = COMMUNITY_LIST_STRING; | |
149 | ||
150 | /* Set access_list to string list. */ | |
151 | list = &cm->str; | |
8708b74f | 152 | |
718e3744 | 153 | /* Set point to insertion point. */ |
154 | for (point = list->head; point; point = point->next) | |
8708b74f | 155 | if (strcmp (point->name, name) >= 0) |
156 | break; | |
718e3744 | 157 | } |
158 | ||
159 | /* Link to upper list. */ | |
160 | new->parent = list; | |
161 | ||
162 | /* In case of this is the first element of master. */ | |
163 | if (list->head == NULL) | |
164 | { | |
165 | list->head = list->tail = new; | |
166 | return new; | |
167 | } | |
168 | ||
169 | /* In case of insertion is made at the tail of access_list. */ | |
170 | if (point == NULL) | |
171 | { | |
172 | new->prev = list->tail; | |
173 | list->tail->next = new; | |
174 | list->tail = new; | |
175 | return new; | |
176 | } | |
177 | ||
178 | /* In case of insertion is made at the head of access_list. */ | |
179 | if (point == list->head) | |
180 | { | |
181 | new->next = list->head; | |
182 | list->head->prev = new; | |
183 | list->head = new; | |
184 | return new; | |
185 | } | |
186 | ||
187 | /* Insertion is made at middle of the access_list. */ | |
188 | new->next = point; | |
189 | new->prev = point->prev; | |
190 | ||
191 | if (point->prev) | |
192 | point->prev->next = new; | |
193 | point->prev = new; | |
194 | ||
195 | return new; | |
196 | } | |
197 | ||
198 | struct community_list * | |
199 | community_list_lookup (struct community_list_handler *ch, | |
fee6e4e4 | 200 | const char *name, int master) |
718e3744 | 201 | { |
202 | struct community_list *list; | |
203 | struct community_list_master *cm; | |
204 | ||
8708b74f | 205 | if (!name) |
718e3744 | 206 | return NULL; |
207 | ||
fee6e4e4 | 208 | cm = community_list_master_lookup (ch, master); |
8708b74f | 209 | if (!cm) |
718e3744 | 210 | return NULL; |
211 | ||
212 | for (list = cm->num.head; list; list = list->next) | |
213 | if (strcmp (list->name, name) == 0) | |
214 | return list; | |
215 | for (list = cm->str.head; list; list = list->next) | |
216 | if (strcmp (list->name, name) == 0) | |
217 | return list; | |
218 | ||
219 | return NULL; | |
220 | } | |
221 | ||
94f2b392 | 222 | static struct community_list * |
fee6e4e4 | 223 | community_list_get (struct community_list_handler *ch, |
224 | const char *name, int master) | |
718e3744 | 225 | { |
226 | struct community_list *list; | |
227 | ||
fee6e4e4 | 228 | list = community_list_lookup (ch, name, master); |
8708b74f | 229 | if (!list) |
fee6e4e4 | 230 | list = community_list_insert (ch, name, master); |
718e3744 | 231 | return list; |
232 | } | |
233 | ||
94f2b392 | 234 | static void |
718e3744 | 235 | community_list_delete (struct community_list *list) |
236 | { | |
237 | struct community_list_list *clist; | |
238 | struct community_entry *entry, *next; | |
239 | ||
240 | for (entry = list->head; entry; entry = next) | |
241 | { | |
242 | next = entry->next; | |
243 | community_entry_free (entry); | |
244 | } | |
245 | ||
246 | clist = list->parent; | |
247 | ||
248 | if (list->next) | |
249 | list->next->prev = list->prev; | |
250 | else | |
251 | clist->tail = list->prev; | |
252 | ||
253 | if (list->prev) | |
254 | list->prev->next = list->next; | |
255 | else | |
256 | clist->head = list->next; | |
257 | ||
258 | community_list_free (list); | |
259 | } | |
260 | ||
94f2b392 | 261 | static int |
718e3744 | 262 | community_list_empty_p (struct community_list *list) |
263 | { | |
264 | return (list->head == NULL && list->tail == NULL) ? 1 : 0; | |
265 | } | |
6b0655a2 | 266 | |
718e3744 | 267 | /* Add community-list entry to the list. */ |
268 | static void | |
8708b74f | 269 | community_list_entry_add (struct community_list *list, |
270 | struct community_entry *entry) | |
718e3744 | 271 | { |
272 | entry->next = NULL; | |
273 | entry->prev = list->tail; | |
274 | ||
275 | if (list->tail) | |
276 | list->tail->next = entry; | |
277 | else | |
278 | list->head = entry; | |
279 | list->tail = entry; | |
280 | } | |
281 | ||
282 | /* Delete community-list entry from the list. */ | |
283 | static void | |
284 | community_list_entry_delete (struct community_list *list, | |
8708b74f | 285 | struct community_entry *entry, int style) |
718e3744 | 286 | { |
287 | if (entry->next) | |
288 | entry->next->prev = entry->prev; | |
289 | else | |
290 | list->tail = entry->prev; | |
291 | ||
292 | if (entry->prev) | |
293 | entry->prev->next = entry->next; | |
294 | else | |
295 | list->head = entry->next; | |
296 | ||
297 | community_entry_free (entry); | |
298 | ||
299 | if (community_list_empty_p (list)) | |
300 | community_list_delete (list); | |
301 | } | |
302 | ||
303 | /* Lookup community-list entry from the list. */ | |
304 | static struct community_entry * | |
fd79ac91 | 305 | community_list_entry_lookup (struct community_list *list, const void *arg, |
8708b74f | 306 | int direct) |
718e3744 | 307 | { |
308 | struct community_entry *entry; | |
309 | ||
310 | for (entry = list->head; entry; entry = entry->next) | |
311 | { | |
312 | switch (entry->style) | |
8708b74f | 313 | { |
314 | case COMMUNITY_LIST_STANDARD: | |
315 | if (community_cmp (entry->u.com, arg)) | |
316 | return entry; | |
317 | break; | |
318 | case EXTCOMMUNITY_LIST_STANDARD: | |
319 | if (ecommunity_cmp (entry->u.ecom, arg)) | |
320 | return entry; | |
321 | break; | |
322 | case COMMUNITY_LIST_EXPANDED: | |
323 | case EXTCOMMUNITY_LIST_EXPANDED: | |
324 | if (strcmp (entry->config, arg) == 0) | |
325 | return entry; | |
326 | break; | |
327 | default: | |
328 | break; | |
329 | } | |
718e3744 | 330 | } |
331 | return NULL; | |
332 | } | |
6b0655a2 | 333 | |
718e3744 | 334 | /* Internal function to perform regular expression match for community |
335 | attribute. */ | |
336 | static int | |
8708b74f | 337 | community_regexp_match (struct community *com, regex_t * reg) |
718e3744 | 338 | { |
fd79ac91 | 339 | const char *str; |
718e3744 | 340 | |
341 | /* When there is no communities attribute it is treated as empty | |
342 | string. */ | |
343 | if (com == NULL || com->size == 0) | |
344 | str = ""; | |
345 | else | |
346 | str = community_str (com); | |
347 | ||
348 | /* Regular expression match. */ | |
349 | if (regexec (reg, str, 0, NULL, 0) == 0) | |
350 | return 1; | |
351 | ||
352 | /* No match. */ | |
353 | return 0; | |
354 | } | |
355 | ||
8708b74f | 356 | static int |
357 | ecommunity_regexp_match (struct ecommunity *ecom, regex_t * reg) | |
358 | { | |
fd79ac91 | 359 | const char *str; |
8708b74f | 360 | |
361 | /* When there is no communities attribute it is treated as empty | |
362 | string. */ | |
363 | if (ecom == NULL || ecom->size == 0) | |
364 | str = ""; | |
365 | else | |
366 | str = ecommunity_str (ecom); | |
367 | ||
368 | /* Regular expression match. */ | |
369 | if (regexec (reg, str, 0, NULL, 0) == 0) | |
370 | return 1; | |
371 | ||
372 | /* No match. */ | |
373 | return 0; | |
374 | } | |
375 | ||
718e3744 | 376 | /* Delete community attribute using regular expression match. Return |
377 | modified communites attribute. */ | |
378 | static struct community * | |
8708b74f | 379 | community_regexp_delete (struct community *com, regex_t * reg) |
718e3744 | 380 | { |
381 | int i; | |
382 | u_int32_t comval; | |
383 | /* Maximum is "65535:65535" + '\0'. */ | |
384 | char c[12]; | |
fd79ac91 | 385 | const char *str; |
718e3744 | 386 | |
8708b74f | 387 | if (!com) |
718e3744 | 388 | return NULL; |
389 | ||
390 | i = 0; | |
391 | while (i < com->size) | |
392 | { | |
393 | memcpy (&comval, com_nthval (com, i), sizeof (u_int32_t)); | |
394 | comval = ntohl (comval); | |
395 | ||
396 | switch (comval) | |
8708b74f | 397 | { |
398 | case COMMUNITY_INTERNET: | |
399 | str = "internet"; | |
400 | break; | |
401 | case COMMUNITY_NO_EXPORT: | |
402 | str = "no-export"; | |
403 | break; | |
404 | case COMMUNITY_NO_ADVERTISE: | |
405 | str = "no-advertise"; | |
406 | break; | |
407 | case COMMUNITY_LOCAL_AS: | |
408 | str = "local-AS"; | |
409 | break; | |
410 | default: | |
411 | sprintf (c, "%d:%d", (comval >> 16) & 0xFFFF, comval & 0xFFFF); | |
412 | str = c; | |
413 | break; | |
414 | } | |
718e3744 | 415 | |
416 | if (regexec (reg, str, 0, NULL, 0) == 0) | |
8708b74f | 417 | community_del_val (com, com_nthval (com, i)); |
718e3744 | 418 | else |
8708b74f | 419 | i++; |
718e3744 | 420 | } |
421 | return com; | |
422 | } | |
423 | ||
424 | /* When given community attribute matches to the community-list return | |
425 | 1 else return 0. */ | |
426 | int | |
427 | community_list_match (struct community *com, struct community_list *list) | |
428 | { | |
429 | struct community_entry *entry; | |
430 | ||
431 | for (entry = list->head; entry; entry = entry->next) | |
432 | { | |
433 | if (entry->any) | |
8708b74f | 434 | return entry->direct == COMMUNITY_PERMIT ? 1 : 0; |
718e3744 | 435 | |
436 | if (entry->style == COMMUNITY_LIST_STANDARD) | |
8708b74f | 437 | { |
438 | if (community_include (entry->u.com, COMMUNITY_INTERNET)) | |
439 | return entry->direct == COMMUNITY_PERMIT ? 1 : 0; | |
718e3744 | 440 | |
8708b74f | 441 | if (community_match (com, entry->u.com)) |
442 | return entry->direct == COMMUNITY_PERMIT ? 1 : 0; | |
443 | } | |
718e3744 | 444 | else if (entry->style == COMMUNITY_LIST_EXPANDED) |
8708b74f | 445 | { |
446 | if (community_regexp_match (com, entry->reg)) | |
447 | return entry->direct == COMMUNITY_PERMIT ? 1 : 0; | |
448 | } | |
449 | } | |
450 | return 0; | |
451 | } | |
452 | ||
453 | int | |
454 | ecommunity_list_match (struct ecommunity *ecom, struct community_list *list) | |
455 | { | |
456 | struct community_entry *entry; | |
457 | ||
458 | for (entry = list->head; entry; entry = entry->next) | |
459 | { | |
460 | if (entry->any) | |
461 | return entry->direct == COMMUNITY_PERMIT ? 1 : 0; | |
462 | ||
463 | if (entry->style == EXTCOMMUNITY_LIST_STANDARD) | |
464 | { | |
465 | if (ecommunity_match (ecom, entry->u.ecom)) | |
466 | return entry->direct == COMMUNITY_PERMIT ? 1 : 0; | |
467 | } | |
468 | else if (entry->style == EXTCOMMUNITY_LIST_EXPANDED) | |
469 | { | |
470 | if (ecommunity_regexp_match (ecom, entry->reg)) | |
471 | return entry->direct == COMMUNITY_PERMIT ? 1 : 0; | |
472 | } | |
718e3744 | 473 | } |
474 | return 0; | |
475 | } | |
476 | ||
477 | /* Perform exact matching. In case of expanded community-list, do | |
478 | same thing as community_list_match(). */ | |
479 | int | |
8708b74f | 480 | community_list_exact_match (struct community *com, |
481 | struct community_list *list) | |
718e3744 | 482 | { |
483 | struct community_entry *entry; | |
484 | ||
485 | for (entry = list->head; entry; entry = entry->next) | |
486 | { | |
487 | if (entry->any) | |
8708b74f | 488 | return entry->direct == COMMUNITY_PERMIT ? 1 : 0; |
718e3744 | 489 | |
490 | if (entry->style == COMMUNITY_LIST_STANDARD) | |
8708b74f | 491 | { |
492 | if (community_include (entry->u.com, COMMUNITY_INTERNET)) | |
493 | return entry->direct == COMMUNITY_PERMIT ? 1 : 0; | |
718e3744 | 494 | |
8708b74f | 495 | if (community_cmp (com, entry->u.com)) |
496 | return entry->direct == COMMUNITY_PERMIT ? 1 : 0; | |
497 | } | |
718e3744 | 498 | else if (entry->style == COMMUNITY_LIST_EXPANDED) |
8708b74f | 499 | { |
500 | if (community_regexp_match (com, entry->reg)) | |
501 | return entry->direct == COMMUNITY_PERMIT ? 1 : 0; | |
502 | } | |
718e3744 | 503 | } |
504 | return 0; | |
505 | } | |
506 | ||
8708b74f | 507 | /* Delete all permitted communities in the list from com. */ |
718e3744 | 508 | struct community * |
509 | community_list_match_delete (struct community *com, | |
8708b74f | 510 | struct community_list *list) |
718e3744 | 511 | { |
512 | struct community_entry *entry; | |
513 | ||
514 | for (entry = list->head; entry; entry = entry->next) | |
515 | { | |
847375b9 | 516 | if (entry->any) |
8708b74f | 517 | { |
847375b9 | 518 | if (entry->direct == COMMUNITY_PERMIT) |
519 | { | |
520 | /* This is a tricky part. Currently only | |
521 | * route_set_community_delete() uses this function. In the | |
522 | * function com->size is zero, it free the community | |
523 | * structure. | |
524 | */ | |
525 | com->size = 0; | |
526 | } | |
8708b74f | 527 | return com; |
528 | } | |
718e3744 | 529 | |
847375b9 | 530 | if ((entry->style == COMMUNITY_LIST_STANDARD) |
531 | && (community_include (entry->u.com, COMMUNITY_INTERNET) | |
532 | || community_match (com, entry->u.com) )) | |
8708b74f | 533 | { |
847375b9 | 534 | if (entry->direct == COMMUNITY_PERMIT) |
535 | community_delete (com, entry->u.com); | |
536 | else | |
537 | break; | |
8708b74f | 538 | } |
847375b9 | 539 | else if ((entry->style == COMMUNITY_LIST_EXPANDED) |
540 | && community_regexp_match (com, entry->reg)) | |
8708b74f | 541 | { |
542 | if (entry->direct == COMMUNITY_PERMIT) | |
543 | community_regexp_delete (com, entry->reg); | |
847375b9 | 544 | else |
545 | break; | |
8708b74f | 546 | } |
718e3744 | 547 | } |
548 | return com; | |
549 | } | |
550 | ||
551 | /* To avoid duplicated entry in the community-list, this function | |
552 | compares specified entry to existing entry. */ | |
94f2b392 | 553 | static int |
8708b74f | 554 | community_list_dup_check (struct community_list *list, |
555 | struct community_entry *new) | |
718e3744 | 556 | { |
557 | struct community_entry *entry; | |
8708b74f | 558 | |
718e3744 | 559 | for (entry = list->head; entry; entry = entry->next) |
560 | { | |
561 | if (entry->style != new->style) | |
8708b74f | 562 | continue; |
718e3744 | 563 | |
564 | if (entry->direct != new->direct) | |
8708b74f | 565 | continue; |
718e3744 | 566 | |
567 | if (entry->any != new->any) | |
8708b74f | 568 | continue; |
718e3744 | 569 | |
570 | if (entry->any) | |
8708b74f | 571 | return 1; |
718e3744 | 572 | |
573 | switch (entry->style) | |
8708b74f | 574 | { |
575 | case COMMUNITY_LIST_STANDARD: | |
576 | if (community_cmp (entry->u.com, new->u.com)) | |
577 | return 1; | |
578 | break; | |
579 | case EXTCOMMUNITY_LIST_STANDARD: | |
580 | if (ecommunity_cmp (entry->u.ecom, new->u.ecom)) | |
581 | return 1; | |
582 | break; | |
583 | case COMMUNITY_LIST_EXPANDED: | |
584 | case EXTCOMMUNITY_LIST_EXPANDED: | |
585 | if (strcmp (entry->config, new->config) == 0) | |
586 | return 1; | |
587 | break; | |
588 | default: | |
589 | break; | |
590 | } | |
718e3744 | 591 | } |
592 | return 0; | |
593 | } | |
6b0655a2 | 594 | |
718e3744 | 595 | /* Set community-list. */ |
596 | int | |
597 | community_list_set (struct community_list_handler *ch, | |
fd79ac91 | 598 | const char *name, const char *str, int direct, int style) |
718e3744 | 599 | { |
fee6e4e4 | 600 | struct community_entry *entry = NULL; |
718e3744 | 601 | struct community_list *list; |
fee6e4e4 | 602 | struct community *com = NULL; |
603 | regex_t *regex = NULL; | |
718e3744 | 604 | |
605 | /* Get community list. */ | |
fee6e4e4 | 606 | list = community_list_get (ch, name, COMMUNITY_LIST_MASTER); |
718e3744 | 607 | |
608 | /* When community-list already has entry, new entry should have same | |
609 | style. If you want to have mixed style community-list, you can | |
610 | comment out this check. */ | |
8708b74f | 611 | if (!community_list_empty_p (list)) |
718e3744 | 612 | { |
613 | struct community_entry *first; | |
614 | ||
615 | first = list->head; | |
616 | ||
fee6e4e4 | 617 | if (style != first->style) |
618 | { | |
619 | return (first->style == COMMUNITY_LIST_STANDARD | |
620 | ? COMMUNITY_LIST_ERR_STANDARD_CONFLICT | |
621 | : COMMUNITY_LIST_ERR_EXPANDED_CONFLICT); | |
622 | } | |
718e3744 | 623 | } |
624 | ||
fee6e4e4 | 625 | if (str) |
718e3744 | 626 | { |
fee6e4e4 | 627 | if (style == COMMUNITY_LIST_STANDARD) |
628 | com = community_str2com (str); | |
718e3744 | 629 | else |
fee6e4e4 | 630 | regex = bgp_regcomp (str); |
8708b74f | 631 | |
fee6e4e4 | 632 | if (! com && ! regex) |
633 | return COMMUNITY_LIST_ERR_MALFORMED_VAL; | |
718e3744 | 634 | } |
635 | ||
fee6e4e4 | 636 | entry = community_entry_new (); |
637 | entry->direct = direct; | |
638 | entry->style = style; | |
639 | entry->any = (str ? 0 : 1); | |
640 | entry->u.com = com; | |
641 | entry->reg = regex; | |
642 | entry->config = (regex ? XSTRDUP (MTYPE_COMMUNITY_LIST_CONFIG, str) : NULL); | |
643 | ||
718e3744 | 644 | /* Do not put duplicated community entry. */ |
645 | if (community_list_dup_check (list, entry)) | |
646 | community_entry_free (entry); | |
647 | else | |
518f0eb1 DS |
648 | { |
649 | community_list_entry_add (list, entry); | |
650 | route_map_notify_dependencies(name, RMAP_EVENT_CLIST_ADDED); | |
651 | } | |
718e3744 | 652 | |
653 | return 0; | |
654 | } | |
655 | ||
656 | /* Unset community-list. When str is NULL, delete all of | |
657 | community-list entry belongs to the specified name. */ | |
658 | int | |
659 | community_list_unset (struct community_list_handler *ch, | |
fd79ac91 | 660 | const char *name, const char *str, |
661 | int direct, int style) | |
718e3744 | 662 | { |
fee6e4e4 | 663 | struct community_entry *entry = NULL; |
718e3744 | 664 | struct community_list *list; |
fee6e4e4 | 665 | struct community *com = NULL; |
666 | regex_t *regex = NULL; | |
718e3744 | 667 | |
668 | /* Lookup community list. */ | |
fee6e4e4 | 669 | list = community_list_lookup (ch, name, COMMUNITY_LIST_MASTER); |
718e3744 | 670 | if (list == NULL) |
671 | return COMMUNITY_LIST_ERR_CANT_FIND_LIST; | |
672 | ||
673 | /* Delete all of entry belongs to this community-list. */ | |
8708b74f | 674 | if (!str) |
718e3744 | 675 | { |
676 | community_list_delete (list); | |
518f0eb1 | 677 | route_map_notify_dependencies(name, RMAP_EVENT_CLIST_DELETED); |
718e3744 | 678 | return 0; |
679 | } | |
680 | ||
fee6e4e4 | 681 | if (style == COMMUNITY_LIST_STANDARD) |
682 | com = community_str2com (str); | |
683 | else | |
684 | regex = bgp_regcomp (str); | |
718e3744 | 685 | |
fee6e4e4 | 686 | if (! com && ! regex) |
687 | return COMMUNITY_LIST_ERR_MALFORMED_VAL; | |
718e3744 | 688 | |
fee6e4e4 | 689 | if (com) |
690 | entry = community_list_entry_lookup (list, com, direct); | |
691 | else | |
692 | entry = community_list_entry_lookup (list, str, direct); | |
693 | ||
694 | if (com) | |
695 | community_free (com); | |
696 | if (regex) | |
697 | bgp_regex_free (regex); | |
718e3744 | 698 | |
8708b74f | 699 | if (!entry) |
718e3744 | 700 | return COMMUNITY_LIST_ERR_CANT_FIND_LIST; |
701 | ||
702 | community_list_entry_delete (list, entry, style); | |
518f0eb1 | 703 | route_map_notify_dependencies(name, RMAP_EVENT_CLIST_DELETED); |
718e3744 | 704 | |
705 | return 0; | |
706 | } | |
707 | ||
708 | /* Set extcommunity-list. */ | |
709 | int | |
710 | extcommunity_list_set (struct community_list_handler *ch, | |
fd79ac91 | 711 | const char *name, const char *str, |
712 | int direct, int style) | |
718e3744 | 713 | { |
fee6e4e4 | 714 | struct community_entry *entry = NULL; |
718e3744 | 715 | struct community_list *list; |
fee6e4e4 | 716 | struct ecommunity *ecom = NULL; |
717 | regex_t *regex = NULL; | |
718e3744 | 718 | |
719 | entry = NULL; | |
720 | ||
721 | /* Get community list. */ | |
fee6e4e4 | 722 | list = community_list_get (ch, name, EXTCOMMUNITY_LIST_MASTER); |
718e3744 | 723 | |
724 | /* When community-list already has entry, new entry should have same | |
725 | style. If you want to have mixed style community-list, you can | |
726 | comment out this check. */ | |
8708b74f | 727 | if (!community_list_empty_p (list)) |
718e3744 | 728 | { |
729 | struct community_entry *first; | |
730 | ||
731 | first = list->head; | |
732 | ||
fee6e4e4 | 733 | if (style != first->style) |
734 | { | |
735 | return (first->style == EXTCOMMUNITY_LIST_STANDARD | |
736 | ? COMMUNITY_LIST_ERR_STANDARD_CONFLICT | |
737 | : COMMUNITY_LIST_ERR_EXPANDED_CONFLICT); | |
738 | } | |
718e3744 | 739 | } |
740 | ||
fee6e4e4 | 741 | if (str) |
718e3744 | 742 | { |
fee6e4e4 | 743 | if (style == EXTCOMMUNITY_LIST_STANDARD) |
744 | ecom = ecommunity_str2com (str, 0, 1); | |
718e3744 | 745 | else |
fee6e4e4 | 746 | regex = bgp_regcomp (str); |
8708b74f | 747 | |
fee6e4e4 | 748 | if (! ecom && ! regex) |
749 | return COMMUNITY_LIST_ERR_MALFORMED_VAL; | |
718e3744 | 750 | } |
751 | ||
fee6e4e4 | 752 | if (ecom) |
753 | ecom->str = ecommunity_ecom2str (ecom, ECOMMUNITY_FORMAT_DISPLAY); | |
754 | ||
755 | entry = community_entry_new (); | |
756 | entry->direct = direct; | |
757 | entry->style = style; | |
758 | entry->any = (str ? 0 : 1); | |
759 | if (ecom) | |
760 | entry->config = ecommunity_ecom2str (ecom, ECOMMUNITY_FORMAT_COMMUNITY_LIST); | |
761 | else if (regex) | |
762 | entry->config = XSTRDUP (MTYPE_COMMUNITY_LIST_CONFIG, str); | |
763 | else | |
764 | entry->config = NULL; | |
765 | entry->u.ecom = ecom; | |
766 | entry->reg = regex; | |
767 | ||
718e3744 | 768 | /* Do not put duplicated community entry. */ |
769 | if (community_list_dup_check (list, entry)) | |
770 | community_entry_free (entry); | |
771 | else | |
518f0eb1 DS |
772 | { |
773 | community_list_entry_add (list, entry); | |
774 | route_map_notify_dependencies(name, RMAP_EVENT_ECLIST_ADDED); | |
775 | } | |
718e3744 | 776 | |
777 | return 0; | |
778 | } | |
779 | ||
780 | /* Unset extcommunity-list. When str is NULL, delete all of | |
781 | extcommunity-list entry belongs to the specified name. */ | |
782 | int | |
783 | extcommunity_list_unset (struct community_list_handler *ch, | |
fd79ac91 | 784 | const char *name, const char *str, |
785 | int direct, int style) | |
718e3744 | 786 | { |
fee6e4e4 | 787 | struct community_entry *entry = NULL; |
718e3744 | 788 | struct community_list *list; |
789 | struct ecommunity *ecom = NULL; | |
fee6e4e4 | 790 | regex_t *regex = NULL; |
718e3744 | 791 | |
792 | /* Lookup extcommunity list. */ | |
fee6e4e4 | 793 | list = community_list_lookup (ch, name, EXTCOMMUNITY_LIST_MASTER); |
718e3744 | 794 | if (list == NULL) |
795 | return COMMUNITY_LIST_ERR_CANT_FIND_LIST; | |
796 | ||
797 | /* Delete all of entry belongs to this extcommunity-list. */ | |
8708b74f | 798 | if (!str) |
718e3744 | 799 | { |
800 | community_list_delete (list); | |
518f0eb1 | 801 | route_map_notify_dependencies(name, RMAP_EVENT_ECLIST_DELETED); |
718e3744 | 802 | return 0; |
803 | } | |
804 | ||
fee6e4e4 | 805 | if (style == EXTCOMMUNITY_LIST_STANDARD) |
806 | ecom = ecommunity_str2com (str, 0, 1); | |
807 | else | |
808 | regex = bgp_regcomp (str); | |
718e3744 | 809 | |
fee6e4e4 | 810 | if (! ecom && ! regex) |
811 | return COMMUNITY_LIST_ERR_MALFORMED_VAL; | |
718e3744 | 812 | |
fee6e4e4 | 813 | if (ecom) |
814 | entry = community_list_entry_lookup (list, ecom, direct); | |
815 | else | |
816 | entry = community_list_entry_lookup (list, str, direct); | |
817 | ||
818 | if (ecom) | |
f6f434b2 | 819 | ecommunity_free (&ecom); |
fee6e4e4 | 820 | if (regex) |
821 | bgp_regex_free (regex); | |
718e3744 | 822 | |
8708b74f | 823 | if (!entry) |
718e3744 | 824 | return COMMUNITY_LIST_ERR_CANT_FIND_LIST; |
825 | ||
826 | community_list_entry_delete (list, entry, style); | |
518f0eb1 | 827 | route_map_notify_dependencies(name, RMAP_EVENT_ECLIST_DELETED); |
718e3744 | 828 | |
829 | return 0; | |
830 | } | |
831 | ||
832 | /* Initializa community-list. Return community-list handler. */ | |
833 | struct community_list_handler * | |
94f2b392 | 834 | community_list_init (void) |
718e3744 | 835 | { |
836 | struct community_list_handler *ch; | |
837 | ch = XCALLOC (MTYPE_COMMUNITY_LIST_HANDLER, | |
8708b74f | 838 | sizeof (struct community_list_handler)); |
718e3744 | 839 | return ch; |
840 | } | |
841 | ||
842 | /* Terminate community-list. */ | |
228da428 | 843 | void |
718e3744 | 844 | community_list_terminate (struct community_list_handler *ch) |
845 | { | |
846 | struct community_list_master *cm; | |
847 | struct community_list *list; | |
848 | ||
849 | cm = &ch->community_list; | |
850 | while ((list = cm->num.head) != NULL) | |
851 | community_list_delete (list); | |
852 | while ((list = cm->str.head) != NULL) | |
853 | community_list_delete (list); | |
854 | ||
855 | cm = &ch->extcommunity_list; | |
856 | while ((list = cm->num.head) != NULL) | |
857 | community_list_delete (list); | |
858 | while ((list = cm->str.head) != NULL) | |
859 | community_list_delete (list); | |
860 | ||
861 | XFREE (MTYPE_COMMUNITY_LIST_HANDLER, ch); | |
862 | } |