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acddc0ed | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
2d33f157 | 2 | /* |
3 | * API message handling module for OSPF daemon and client. | |
4 | * Copyright (C) 2001, 2002 Ralph Keller | |
44038c7a | 5 | * Copyright (c) 2022, LabN Consulting, L.L.C. |
2d33f157 | 6 | */ |
7 | ||
8 | #include <zebra.h> | |
9 | ||
10 | #ifdef SUPPORT_OSPF_API | |
2d33f157 | 11 | |
12 | #include "linklist.h" | |
13 | #include "prefix.h" | |
14 | #include "if.h" | |
15 | #include "table.h" | |
16 | #include "memory.h" | |
17 | #include "command.h" | |
18 | #include "vty.h" | |
19 | #include "stream.h" | |
20 | #include "log.h" | |
24a58196 | 21 | #include "frrevent.h" |
2d33f157 | 22 | #include "hash.h" |
d62a17ae | 23 | #include "sockunion.h" /* for inet_aton() */ |
2d33f157 | 24 | #include "buffer.h" |
25 | #include "network.h" | |
26 | ||
27 | #include "ospfd/ospfd.h" | |
28 | #include "ospfd/ospf_interface.h" | |
29 | #include "ospfd/ospf_ism.h" | |
30 | #include "ospfd/ospf_asbr.h" | |
31 | #include "ospfd/ospf_lsa.h" | |
32 | #include "ospfd/ospf_lsdb.h" | |
33 | #include "ospfd/ospf_neighbor.h" | |
34 | #include "ospfd/ospf_nsm.h" | |
35 | #include "ospfd/ospf_flood.h" | |
36 | #include "ospfd/ospf_packet.h" | |
37 | #include "ospfd/ospf_spf.h" | |
38 | #include "ospfd/ospf_dump.h" | |
39 | #include "ospfd/ospf_route.h" | |
40 | #include "ospfd/ospf_ase.h" | |
41 | #include "ospfd/ospf_zebra.h" | |
42 | ||
43 | #include "ospfd/ospf_api.h" | |
44 | ||
45 | ||
46 | /* For debugging only, will be removed */ | |
8db278b5 | 47 | void api_opaque_lsa_print(struct ospf_lsa *lsa) |
2d33f157 | 48 | { |
d62a17ae | 49 | struct opaque_lsa { |
50 | struct lsa_header header; | |
d7c0a89a | 51 | uint8_t mydata[]; |
d62a17ae | 52 | }; |
2d33f157 | 53 | |
d62a17ae | 54 | struct opaque_lsa *olsa; |
55 | int opaquelen; | |
56 | int i; | |
2d33f157 | 57 | |
8db278b5 | 58 | ospf_lsa_header_dump(lsa->data); |
2d33f157 | 59 | |
8db278b5 | 60 | olsa = (struct opaque_lsa *)lsa->data; |
2d33f157 | 61 | |
8db278b5 | 62 | opaquelen = lsa->size - OSPF_LSA_HEADER_SIZE; |
9165c5f5 | 63 | zlog_debug("apiserver_lsa_print: opaquelen=%d", opaquelen); |
2d33f157 | 64 | |
d62a17ae | 65 | for (i = 0; i < opaquelen; i++) { |
66 | zlog_debug("0x%x ", olsa->mydata[i]); | |
67 | } | |
9165c5f5 | 68 | zlog_debug(" "); |
2d33f157 | 69 | } |
70 | ||
71 | /* ----------------------------------------------------------- | |
72 | * Generic messages | |
73 | * ----------------------------------------------------------- | |
74 | */ | |
75 | ||
d7c0a89a QY |
76 | struct msg *msg_new(uint8_t msgtype, void *msgbody, uint32_t seqnum, |
77 | uint16_t msglen) | |
2d33f157 | 78 | { |
d62a17ae | 79 | struct msg *new; |
2d33f157 | 80 | |
d62a17ae | 81 | new = XCALLOC(MTYPE_OSPF_API_MSG, sizeof(struct msg)); |
2d33f157 | 82 | |
d62a17ae | 83 | new->hdr.version = OSPF_API_VERSION; |
84 | new->hdr.msgtype = msgtype; | |
85 | new->hdr.msglen = htons(msglen); | |
86 | new->hdr.msgseq = htonl(seqnum); | |
2d33f157 | 87 | |
d62a17ae | 88 | new->s = stream_new(msglen); |
89 | assert(new->s); | |
90 | stream_put(new->s, msgbody, msglen); | |
2d33f157 | 91 | |
d62a17ae | 92 | return new; |
2d33f157 | 93 | } |
94 | ||
95 | ||
96 | /* Duplicate a message by copying content. */ | |
d62a17ae | 97 | struct msg *msg_dup(struct msg *msg) |
2d33f157 | 98 | { |
d62a17ae | 99 | struct msg *new; |
8db278b5 | 100 | size_t size; |
2d33f157 | 101 | |
d62a17ae | 102 | assert(msg); |
2d33f157 | 103 | |
8db278b5 OD |
104 | size = ntohs(msg->hdr.msglen); |
105 | if (size > OSPF_MAX_LSA_SIZE) | |
106 | return NULL; | |
107 | ||
d62a17ae | 108 | new = msg_new(msg->hdr.msgtype, STREAM_DATA(msg->s), |
8db278b5 | 109 | ntohl(msg->hdr.msgseq), size); |
d62a17ae | 110 | return new; |
2d33f157 | 111 | } |
112 | ||
113 | ||
114 | /* XXX only for testing, will be removed */ | |
115 | ||
116 | struct nametab { | |
d62a17ae | 117 | int value; |
118 | const char *name; | |
2d33f157 | 119 | }; |
120 | ||
d62a17ae | 121 | const char *ospf_api_typename(int msgtype) |
2d33f157 | 122 | { |
d62a17ae | 123 | struct nametab NameTab[] = { |
124 | { | |
9d303b37 | 125 | MSG_REGISTER_OPAQUETYPE, "Register opaque-type", |
d62a17ae | 126 | }, |
127 | { | |
9d303b37 | 128 | MSG_UNREGISTER_OPAQUETYPE, "Unregister opaque-type", |
d62a17ae | 129 | }, |
130 | { | |
9d303b37 | 131 | MSG_REGISTER_EVENT, "Register event", |
d62a17ae | 132 | }, |
133 | { | |
9d303b37 | 134 | MSG_SYNC_LSDB, "Sync LSDB", |
d62a17ae | 135 | }, |
136 | { | |
9d303b37 | 137 | MSG_ORIGINATE_REQUEST, "Originate request", |
d62a17ae | 138 | }, |
139 | { | |
9d303b37 | 140 | MSG_DELETE_REQUEST, "Delete request", |
d62a17ae | 141 | }, |
142 | { | |
9d303b37 | 143 | MSG_REPLY, "Reply", |
d62a17ae | 144 | }, |
145 | { | |
9d303b37 | 146 | MSG_READY_NOTIFY, "Ready notify", |
d62a17ae | 147 | }, |
148 | { | |
9d303b37 | 149 | MSG_LSA_UPDATE_NOTIFY, "LSA update notify", |
d62a17ae | 150 | }, |
151 | { | |
9d303b37 | 152 | MSG_LSA_DELETE_NOTIFY, "LSA delete notify", |
d62a17ae | 153 | }, |
154 | { | |
9d303b37 | 155 | MSG_NEW_IF, "New interface", |
d62a17ae | 156 | }, |
157 | { | |
9d303b37 | 158 | MSG_DEL_IF, "Del interface", |
d62a17ae | 159 | }, |
160 | { | |
9d303b37 | 161 | MSG_ISM_CHANGE, "ISM change", |
d62a17ae | 162 | }, |
163 | { | |
9d303b37 | 164 | MSG_NSM_CHANGE, "NSM change", |
d62a17ae | 165 | }, |
149491af CH |
166 | { |
167 | MSG_REACHABLE_CHANGE, | |
168 | "Reachable change", | |
169 | }, | |
d62a17ae | 170 | }; |
171 | ||
172 | int i, n = array_size(NameTab); | |
173 | const char *name = NULL; | |
174 | ||
175 | for (i = 0; i < n; i++) { | |
176 | if (NameTab[i].value == msgtype) { | |
177 | name = NameTab[i].name; | |
178 | break; | |
179 | } | |
180 | } | |
181 | ||
182 | return name ? name : "?"; | |
2d33f157 | 183 | } |
184 | ||
d62a17ae | 185 | const char *ospf_api_errname(int errcode) |
2d33f157 | 186 | { |
d62a17ae | 187 | struct nametab NameTab[] = { |
188 | { | |
9d303b37 | 189 | OSPF_API_OK, "OK", |
d62a17ae | 190 | }, |
191 | { | |
9d303b37 | 192 | OSPF_API_NOSUCHINTERFACE, "No such interface", |
d62a17ae | 193 | }, |
194 | { | |
9d303b37 | 195 | OSPF_API_NOSUCHAREA, "No such area", |
d62a17ae | 196 | }, |
197 | { | |
9d303b37 | 198 | OSPF_API_NOSUCHLSA, "No such LSA", |
d62a17ae | 199 | }, |
200 | { | |
9d303b37 | 201 | OSPF_API_ILLEGALLSATYPE, "Illegal LSA type", |
d62a17ae | 202 | }, |
203 | { | |
9d303b37 | 204 | OSPF_API_OPAQUETYPEINUSE, "Opaque type in use", |
d62a17ae | 205 | }, |
206 | { | |
207 | OSPF_API_OPAQUETYPENOTREGISTERED, | |
208 | "Opaque type not registered", | |
209 | }, | |
210 | { | |
9d303b37 | 211 | OSPF_API_NOTREADY, "Not ready", |
d62a17ae | 212 | }, |
213 | { | |
9d303b37 | 214 | OSPF_API_NOMEMORY, "No memory", |
d62a17ae | 215 | }, |
216 | { | |
9d303b37 | 217 | OSPF_API_ERROR, "Other error", |
d62a17ae | 218 | }, |
219 | { | |
9d303b37 | 220 | OSPF_API_UNDEF, "Undefined", |
d62a17ae | 221 | }, |
222 | }; | |
223 | ||
224 | int i, n = array_size(NameTab); | |
225 | const char *name = NULL; | |
226 | ||
227 | for (i = 0; i < n; i++) { | |
228 | if (NameTab[i].value == errcode) { | |
229 | name = NameTab[i].name; | |
230 | break; | |
231 | } | |
232 | } | |
233 | ||
234 | return name ? name : "?"; | |
2d33f157 | 235 | } |
236 | ||
d62a17ae | 237 | void msg_print(struct msg *msg) |
2d33f157 | 238 | { |
d62a17ae | 239 | if (!msg) { |
9165c5f5 | 240 | zlog_debug("msg_print msg=NULL!"); |
d62a17ae | 241 | return; |
242 | } | |
2d33f157 | 243 | |
d62a17ae | 244 | /* API message common header part. */ |
245 | zlog_debug("API-msg [%s]: type(%d),len(%d),seq(%lu),data(%p),size(%zd)", | |
246 | ospf_api_typename(msg->hdr.msgtype), msg->hdr.msgtype, | |
247 | ntohs(msg->hdr.msglen), | |
248 | (unsigned long)ntohl(msg->hdr.msgseq), STREAM_DATA(msg->s), | |
249 | STREAM_SIZE(msg->s)); | |
250 | ||
d62a17ae | 251 | return; |
2d33f157 | 252 | } |
253 | ||
d62a17ae | 254 | void msg_free(struct msg *msg) |
2d33f157 | 255 | { |
d62a17ae | 256 | if (msg->s) |
257 | stream_free(msg->s); | |
2d33f157 | 258 | |
d62a17ae | 259 | XFREE(MTYPE_OSPF_API_MSG, msg); |
2d33f157 | 260 | } |
261 | ||
262 | ||
263 | /* Set sequence number of message */ | |
d7c0a89a | 264 | void msg_set_seq(struct msg *msg, uint32_t seqnr) |
2d33f157 | 265 | { |
d62a17ae | 266 | assert(msg); |
267 | msg->hdr.msgseq = htonl(seqnr); | |
2d33f157 | 268 | } |
269 | ||
270 | /* Get sequence number of message */ | |
d7c0a89a | 271 | uint32_t msg_get_seq(struct msg *msg) |
2d33f157 | 272 | { |
d62a17ae | 273 | assert(msg); |
274 | return ntohl(msg->hdr.msgseq); | |
2d33f157 | 275 | } |
276 | ||
277 | /* ----------------------------------------------------------- | |
278 | * Message fifo queues | |
279 | * ----------------------------------------------------------- | |
280 | */ | |
281 | ||
4d762f26 | 282 | struct msg_fifo *msg_fifo_new(void) |
2d33f157 | 283 | { |
d62a17ae | 284 | return XCALLOC(MTYPE_OSPF_API_FIFO, sizeof(struct msg_fifo)); |
2d33f157 | 285 | } |
286 | ||
287 | /* Add new message to fifo. */ | |
d62a17ae | 288 | void msg_fifo_push(struct msg_fifo *fifo, struct msg *msg) |
2d33f157 | 289 | { |
d62a17ae | 290 | if (fifo->tail) |
291 | fifo->tail->next = msg; | |
292 | else | |
293 | fifo->head = msg; | |
2d33f157 | 294 | |
d62a17ae | 295 | fifo->tail = msg; |
296 | fifo->count++; | |
2d33f157 | 297 | } |
298 | ||
299 | ||
300 | /* Remove first message from fifo. */ | |
d62a17ae | 301 | struct msg *msg_fifo_pop(struct msg_fifo *fifo) |
2d33f157 | 302 | { |
d62a17ae | 303 | struct msg *msg; |
2d33f157 | 304 | |
d62a17ae | 305 | msg = fifo->head; |
306 | if (msg) { | |
307 | fifo->head = msg->next; | |
2d33f157 | 308 | |
d62a17ae | 309 | if (fifo->head == NULL) |
310 | fifo->tail = NULL; | |
2d33f157 | 311 | |
d62a17ae | 312 | fifo->count--; |
313 | } | |
314 | return msg; | |
2d33f157 | 315 | } |
316 | ||
317 | /* Return first fifo entry but do not remove it. */ | |
d62a17ae | 318 | struct msg *msg_fifo_head(struct msg_fifo *fifo) |
2d33f157 | 319 | { |
d62a17ae | 320 | return fifo->head; |
2d33f157 | 321 | } |
322 | ||
323 | /* Flush message fifo. */ | |
d62a17ae | 324 | void msg_fifo_flush(struct msg_fifo *fifo) |
2d33f157 | 325 | { |
d62a17ae | 326 | struct msg *op; |
327 | struct msg *next; | |
2d33f157 | 328 | |
d62a17ae | 329 | for (op = fifo->head; op; op = next) { |
330 | next = op->next; | |
331 | msg_free(op); | |
332 | } | |
2d33f157 | 333 | |
d62a17ae | 334 | fifo->head = fifo->tail = NULL; |
335 | fifo->count = 0; | |
2d33f157 | 336 | } |
337 | ||
338 | /* Free API message fifo. */ | |
d62a17ae | 339 | void msg_fifo_free(struct msg_fifo *fifo) |
2d33f157 | 340 | { |
d62a17ae | 341 | msg_fifo_flush(fifo); |
2d33f157 | 342 | |
d62a17ae | 343 | XFREE(MTYPE_OSPF_API_FIFO, fifo); |
2d33f157 | 344 | } |
345 | ||
d62a17ae | 346 | struct msg *msg_read(int fd) |
2d33f157 | 347 | { |
d62a17ae | 348 | struct msg *msg; |
349 | struct apimsghdr hdr; | |
d7c0a89a | 350 | uint8_t buf[OSPF_API_MAX_MSG_SIZE]; |
e1c511c6 DS |
351 | ssize_t bodylen; |
352 | ssize_t rlen; | |
d62a17ae | 353 | |
354 | /* Read message header */ | |
d7c0a89a | 355 | rlen = readn(fd, (uint8_t *)&hdr, sizeof(struct apimsghdr)); |
d62a17ae | 356 | |
357 | if (rlen < 0) { | |
358 | zlog_warn("msg_read: readn %s", safe_strerror(errno)); | |
359 | return NULL; | |
360 | } else if (rlen == 0) { | |
361 | zlog_warn("msg_read: Connection closed by peer"); | |
362 | return NULL; | |
363 | } else if (rlen != sizeof(struct apimsghdr)) { | |
364 | zlog_warn("msg_read: Cannot read message header!"); | |
365 | return NULL; | |
2d33f157 | 366 | } |
d62a17ae | 367 | |
368 | /* Check version of API protocol */ | |
369 | if (hdr.version != OSPF_API_VERSION) { | |
370 | zlog_warn("msg_read: OSPF API protocol version mismatch"); | |
371 | return NULL; | |
2d33f157 | 372 | } |
d62a17ae | 373 | |
374 | /* Determine body length. */ | |
375 | bodylen = ntohs(hdr.msglen); | |
e1c511c6 DS |
376 | if (bodylen > (ssize_t)sizeof(buf)) { |
377 | zlog_warn("%s: Body Length of message greater than what we can read", | |
378 | __func__); | |
379 | return NULL; | |
380 | } | |
d62a17ae | 381 | |
e1c511c6 | 382 | if (bodylen > 0) { |
d62a17ae | 383 | /* Read message body */ |
384 | rlen = readn(fd, buf, bodylen); | |
385 | if (rlen < 0) { | |
386 | zlog_warn("msg_read: readn %s", safe_strerror(errno)); | |
387 | return NULL; | |
388 | } else if (rlen == 0) { | |
389 | zlog_warn("msg_read: Connection closed by peer"); | |
390 | return NULL; | |
391 | } else if (rlen != bodylen) { | |
392 | zlog_warn("msg_read: Cannot read message body!"); | |
393 | return NULL; | |
394 | } | |
2d33f157 | 395 | } |
2d33f157 | 396 | |
d62a17ae | 397 | /* Allocate new message */ |
8db278b5 | 398 | msg = msg_new(hdr.msgtype, buf, ntohl(hdr.msgseq), bodylen); |
2d33f157 | 399 | |
d62a17ae | 400 | return msg; |
2d33f157 | 401 | } |
402 | ||
d62a17ae | 403 | int msg_write(int fd, struct msg *msg) |
2d33f157 | 404 | { |
d7c0a89a | 405 | uint8_t buf[OSPF_API_MAX_MSG_SIZE]; |
8db278b5 | 406 | uint16_t l; |
d62a17ae | 407 | int wlen; |
408 | ||
409 | assert(msg); | |
410 | assert(msg->s); | |
411 | ||
8db278b5 OD |
412 | /* Length of OSPF LSA payload */ |
413 | l = ntohs(msg->hdr.msglen); | |
414 | if (l > OSPF_MAX_LSA_SIZE) { | |
415 | zlog_warn("%s: wrong LSA size %d", __func__, l); | |
416 | return -1; | |
417 | } | |
d62a17ae | 418 | |
419 | /* Make contiguous memory buffer for message */ | |
420 | memcpy(buf, &msg->hdr, sizeof(struct apimsghdr)); | |
8db278b5 | 421 | memcpy(buf + sizeof(struct apimsghdr), STREAM_DATA(msg->s), l); |
d62a17ae | 422 | |
8db278b5 OD |
423 | /* Total length of OSPF API Message */ |
424 | l += sizeof(struct apimsghdr); | |
d62a17ae | 425 | wlen = writen(fd, buf, l); |
426 | if (wlen < 0) { | |
8db278b5 | 427 | zlog_warn("%s: writen %s", __func__, safe_strerror(errno)); |
d62a17ae | 428 | return -1; |
429 | } else if (wlen == 0) { | |
8db278b5 | 430 | zlog_warn("%s: Connection closed by peer", __func__); |
d62a17ae | 431 | return -1; |
432 | } else if (wlen != l) { | |
8db278b5 | 433 | zlog_warn("%s: Cannot write API message", __func__); |
d62a17ae | 434 | return -1; |
435 | } | |
436 | return 0; | |
2d33f157 | 437 | } |
438 | ||
439 | /* ----------------------------------------------------------- | |
440 | * Specific messages | |
441 | * ----------------------------------------------------------- | |
442 | */ | |
443 | ||
d7c0a89a QY |
444 | struct msg *new_msg_register_opaque_type(uint32_t seqnum, uint8_t ltype, |
445 | uint8_t otype) | |
2d33f157 | 446 | { |
d62a17ae | 447 | struct msg_register_opaque_type rmsg; |
2d33f157 | 448 | |
d62a17ae | 449 | rmsg.lsatype = ltype; |
450 | rmsg.opaquetype = otype; | |
451 | memset(&rmsg.pad, 0, sizeof(rmsg.pad)); | |
2d33f157 | 452 | |
d62a17ae | 453 | return msg_new(MSG_REGISTER_OPAQUETYPE, &rmsg, seqnum, |
454 | sizeof(struct msg_register_opaque_type)); | |
2d33f157 | 455 | } |
456 | ||
d7c0a89a | 457 | struct msg *new_msg_register_event(uint32_t seqnum, |
d62a17ae | 458 | struct lsa_filter_type *filter) |
2d33f157 | 459 | { |
d7c0a89a | 460 | uint8_t buf[OSPF_API_MAX_MSG_SIZE]; |
d62a17ae | 461 | struct msg_register_event *emsg; |
462 | unsigned int len; | |
463 | ||
464 | emsg = (struct msg_register_event *)buf; | |
465 | len = sizeof(struct msg_register_event) | |
466 | + filter->num_areas * sizeof(struct in_addr); | |
467 | emsg->filter.typemask = htons(filter->typemask); | |
468 | emsg->filter.origin = filter->origin; | |
469 | emsg->filter.num_areas = filter->num_areas; | |
470 | if (len > sizeof(buf)) | |
471 | len = sizeof(buf); | |
472 | /* API broken - missing memcpy to fill data */ | |
473 | return msg_new(MSG_REGISTER_EVENT, emsg, seqnum, len); | |
2d33f157 | 474 | } |
475 | ||
d7c0a89a | 476 | struct msg *new_msg_sync_lsdb(uint32_t seqnum, struct lsa_filter_type *filter) |
2d33f157 | 477 | { |
d7c0a89a | 478 | uint8_t buf[OSPF_API_MAX_MSG_SIZE]; |
d62a17ae | 479 | struct msg_sync_lsdb *smsg; |
480 | unsigned int len; | |
481 | ||
482 | smsg = (struct msg_sync_lsdb *)buf; | |
483 | len = sizeof(struct msg_sync_lsdb) | |
484 | + filter->num_areas * sizeof(struct in_addr); | |
485 | smsg->filter.typemask = htons(filter->typemask); | |
486 | smsg->filter.origin = filter->origin; | |
487 | smsg->filter.num_areas = filter->num_areas; | |
488 | if (len > sizeof(buf)) | |
489 | len = sizeof(buf); | |
490 | /* API broken - missing memcpy to fill data */ | |
491 | return msg_new(MSG_SYNC_LSDB, smsg, seqnum, len); | |
2d33f157 | 492 | } |
493 | ||
494 | ||
d7c0a89a | 495 | struct msg *new_msg_originate_request(uint32_t seqnum, struct in_addr ifaddr, |
d62a17ae | 496 | struct in_addr area_id, |
497 | struct lsa_header *data) | |
2d33f157 | 498 | { |
d62a17ae | 499 | struct msg_originate_request *omsg; |
500 | unsigned int omsglen; | |
501 | char buf[OSPF_API_MAX_MSG_SIZE]; | |
c23bc38a | 502 | size_t off_data = offsetof(struct msg_originate_request, data); |
503 | size_t data_maxs = sizeof(buf) - off_data; | |
504 | struct lsa_header *omsg_data = (struct lsa_header *)&buf[off_data]; | |
d62a17ae | 505 | |
506 | omsg = (struct msg_originate_request *)buf; | |
507 | omsg->ifaddr = ifaddr; | |
508 | omsg->area_id = area_id; | |
509 | ||
510 | omsglen = ntohs(data->length); | |
c23bc38a | 511 | if (omsglen > data_maxs) |
512 | omsglen = data_maxs; | |
513 | memcpy(omsg_data, data, omsglen); | |
d62a17ae | 514 | omsglen += sizeof(struct msg_originate_request) |
515 | - sizeof(struct lsa_header); | |
516 | ||
517 | return msg_new(MSG_ORIGINATE_REQUEST, omsg, seqnum, omsglen); | |
2d33f157 | 518 | } |
519 | ||
08172828 | 520 | struct msg *new_msg_delete_request(uint32_t seqnum, struct in_addr addr, |
d7c0a89a | 521 | uint8_t lsa_type, uint8_t opaque_type, |
2f30cb25 | 522 | uint32_t opaque_id, uint8_t flags) |
2d33f157 | 523 | { |
d62a17ae | 524 | struct msg_delete_request dmsg; |
08172828 | 525 | dmsg.addr = addr; |
d62a17ae | 526 | dmsg.lsa_type = lsa_type; |
527 | dmsg.opaque_type = opaque_type; | |
528 | dmsg.opaque_id = htonl(opaque_id); | |
529 | memset(&dmsg.pad, 0, sizeof(dmsg.pad)); | |
2f30cb25 | 530 | dmsg.flags = flags; |
d62a17ae | 531 | |
532 | return msg_new(MSG_DELETE_REQUEST, &dmsg, seqnum, | |
533 | sizeof(struct msg_delete_request)); | |
2d33f157 | 534 | } |
535 | ||
536 | ||
d7c0a89a | 537 | struct msg *new_msg_reply(uint32_t seqnr, uint8_t rc) |
2d33f157 | 538 | { |
d62a17ae | 539 | struct msg *msg; |
540 | struct msg_reply rmsg; | |
2d33f157 | 541 | |
d62a17ae | 542 | /* Set return code */ |
543 | rmsg.errcode = rc; | |
544 | memset(&rmsg.pad, 0, sizeof(rmsg.pad)); | |
2d33f157 | 545 | |
d62a17ae | 546 | msg = msg_new(MSG_REPLY, &rmsg, seqnr, sizeof(struct msg_reply)); |
2d33f157 | 547 | |
d62a17ae | 548 | return msg; |
2d33f157 | 549 | } |
550 | ||
d7c0a89a QY |
551 | struct msg *new_msg_ready_notify(uint32_t seqnr, uint8_t lsa_type, |
552 | uint8_t opaque_type, struct in_addr addr) | |
2d33f157 | 553 | { |
d62a17ae | 554 | struct msg_ready_notify rmsg; |
2d33f157 | 555 | |
d62a17ae | 556 | rmsg.lsa_type = lsa_type; |
557 | rmsg.opaque_type = opaque_type; | |
558 | memset(&rmsg.pad, 0, sizeof(rmsg.pad)); | |
559 | rmsg.addr = addr; | |
2d33f157 | 560 | |
d62a17ae | 561 | return msg_new(MSG_READY_NOTIFY, &rmsg, seqnr, |
562 | sizeof(struct msg_ready_notify)); | |
2d33f157 | 563 | } |
564 | ||
d7c0a89a | 565 | struct msg *new_msg_new_if(uint32_t seqnr, struct in_addr ifaddr, |
d62a17ae | 566 | struct in_addr area_id) |
2d33f157 | 567 | { |
d62a17ae | 568 | struct msg_new_if nmsg; |
2d33f157 | 569 | |
d62a17ae | 570 | nmsg.ifaddr = ifaddr; |
571 | nmsg.area_id = area_id; | |
2d33f157 | 572 | |
d62a17ae | 573 | return msg_new(MSG_NEW_IF, &nmsg, seqnr, sizeof(struct msg_new_if)); |
2d33f157 | 574 | } |
575 | ||
d7c0a89a | 576 | struct msg *new_msg_del_if(uint32_t seqnr, struct in_addr ifaddr) |
2d33f157 | 577 | { |
d62a17ae | 578 | struct msg_del_if dmsg; |
2d33f157 | 579 | |
d62a17ae | 580 | dmsg.ifaddr = ifaddr; |
2d33f157 | 581 | |
d62a17ae | 582 | return msg_new(MSG_DEL_IF, &dmsg, seqnr, sizeof(struct msg_del_if)); |
2d33f157 | 583 | } |
584 | ||
d7c0a89a QY |
585 | struct msg *new_msg_ism_change(uint32_t seqnr, struct in_addr ifaddr, |
586 | struct in_addr area_id, uint8_t status) | |
2d33f157 | 587 | { |
d62a17ae | 588 | struct msg_ism_change imsg; |
2d33f157 | 589 | |
d62a17ae | 590 | imsg.ifaddr = ifaddr; |
591 | imsg.area_id = area_id; | |
592 | imsg.status = status; | |
593 | memset(&imsg.pad, 0, sizeof(imsg.pad)); | |
2d33f157 | 594 | |
d62a17ae | 595 | return msg_new(MSG_ISM_CHANGE, &imsg, seqnr, |
596 | sizeof(struct msg_ism_change)); | |
2d33f157 | 597 | } |
598 | ||
d7c0a89a | 599 | struct msg *new_msg_nsm_change(uint32_t seqnr, struct in_addr ifaddr, |
d62a17ae | 600 | struct in_addr nbraddr, struct in_addr router_id, |
d7c0a89a | 601 | uint8_t status) |
2d33f157 | 602 | { |
d62a17ae | 603 | struct msg_nsm_change nmsg; |
2d33f157 | 604 | |
d62a17ae | 605 | nmsg.ifaddr = ifaddr; |
606 | nmsg.nbraddr = nbraddr; | |
607 | nmsg.router_id = router_id; | |
608 | nmsg.status = status; | |
609 | memset(&nmsg.pad, 0, sizeof(nmsg.pad)); | |
2d33f157 | 610 | |
d62a17ae | 611 | return msg_new(MSG_NSM_CHANGE, &nmsg, seqnr, |
612 | sizeof(struct msg_nsm_change)); | |
2d33f157 | 613 | } |
614 | ||
d7c0a89a | 615 | struct msg *new_msg_lsa_change_notify(uint8_t msgtype, uint32_t seqnum, |
d62a17ae | 616 | struct in_addr ifaddr, |
617 | struct in_addr area_id, | |
d7c0a89a | 618 | uint8_t is_self_originated, |
d62a17ae | 619 | struct lsa_header *data) |
2d33f157 | 620 | { |
d7c0a89a | 621 | uint8_t buf[OSPF_API_MAX_MSG_SIZE]; |
d62a17ae | 622 | struct msg_lsa_change_notify *nmsg; |
623 | unsigned int len; | |
c23bc38a | 624 | size_t off_data = offsetof(struct msg_lsa_change_notify, data); |
625 | size_t data_maxs = sizeof(buf) - off_data; | |
626 | struct lsa_header *nmsg_data = (struct lsa_header *)&buf[off_data]; | |
d62a17ae | 627 | |
628 | assert(data); | |
629 | ||
630 | nmsg = (struct msg_lsa_change_notify *)buf; | |
631 | nmsg->ifaddr = ifaddr; | |
632 | nmsg->area_id = area_id; | |
633 | nmsg->is_self_originated = is_self_originated; | |
634 | memset(&nmsg->pad, 0, sizeof(nmsg->pad)); | |
635 | ||
636 | len = ntohs(data->length); | |
c23bc38a | 637 | if (len > data_maxs) |
638 | len = data_maxs; | |
639 | memcpy(nmsg_data, data, len); | |
d62a17ae | 640 | len += sizeof(struct msg_lsa_change_notify) - sizeof(struct lsa_header); |
641 | ||
642 | return msg_new(msgtype, nmsg, seqnum, len); | |
2d33f157 | 643 | } |
644 | ||
149491af CH |
645 | struct msg *new_msg_reachable_change(uint32_t seqnum, uint16_t nadd, |
646 | struct in_addr *add, uint16_t nremove, | |
647 | struct in_addr *remove) | |
648 | { | |
649 | uint8_t buf[OSPF_API_MAX_MSG_SIZE]; | |
650 | struct msg_reachable_change *nmsg = (void *)buf; | |
651 | const uint insz = sizeof(*nmsg->router_ids); | |
652 | const uint nmax = (sizeof(buf) - sizeof(*nmsg)) / insz; | |
653 | uint len; | |
654 | ||
655 | if (nadd > nmax) | |
656 | nadd = nmax; | |
657 | if (nremove > (nmax - nadd)) | |
658 | nremove = (nmax - nadd); | |
659 | ||
660 | if (nadd) | |
661 | memcpy(nmsg->router_ids, add, nadd * insz); | |
662 | if (nremove) | |
663 | memcpy(&nmsg->router_ids[nadd], remove, nremove * insz); | |
664 | ||
665 | nmsg->nadd = htons(nadd); | |
666 | nmsg->nremove = htons(nremove); | |
667 | len = sizeof(*nmsg) + insz * (nadd + nremove); | |
668 | ||
669 | return msg_new(MSG_REACHABLE_CHANGE, nmsg, seqnum, len); | |
670 | } | |
671 | ||
44038c7a CH |
672 | struct msg *new_msg_router_id_change(uint32_t seqnum, struct in_addr router_id) |
673 | { | |
674 | struct msg_router_id_change rmsg = {.router_id = router_id}; | |
675 | ||
676 | return msg_new(MSG_ROUTER_ID_CHANGE, &rmsg, seqnum, | |
677 | sizeof(struct msg_router_id_change)); | |
678 | } | |
679 | ||
2d33f157 | 680 | #endif /* SUPPORT_OSPF_API */ |