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2d33f157 | 1 | /* |
2 | * Client side of OSPF API. | |
3 | * Copyright (C) 2001, 2002, 2003 Ralph Keller | |
4 | * | |
5 | * This file is part of GNU Zebra. | |
896014f4 | 6 | * |
2d33f157 | 7 | * GNU Zebra is free software; you can redistribute it and/or modify |
8 | * it under the terms of the GNU General Public License as published | |
9 | * by the Free Software Foundation; either version 2, or (at your | |
10 | * option) any later version. | |
11 | * | |
12 | * GNU Zebra is distributed in the hope that it will be useful, but | |
13 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
15 | * General Public License for more details. | |
16 | * | |
896014f4 DL |
17 | * You should have received a copy of the GNU General Public License along |
18 | * with this program; see the file COPYING; if not, write to the Free Software | |
19 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
2d33f157 | 20 | */ |
21 | ||
22 | #include <zebra.h> | |
23 | ||
5e4fa164 | 24 | #include <lib/version.h> |
2d33f157 | 25 | #include "getopt.h" |
26 | #include "thread.h" | |
27 | #include "prefix.h" | |
28 | #include "linklist.h" | |
29 | #include "if.h" | |
30 | #include "vector.h" | |
31 | #include "vty.h" | |
32 | #include "command.h" | |
33 | #include "filter.h" | |
34 | #include "stream.h" | |
35 | #include "log.h" | |
36 | #include "memory.h" | |
b2fa8c0f | 37 | #include "xref.h" |
2d33f157 | 38 | |
5c088023 DL |
39 | /* work around gcc bug 69981, disable MTYPEs in libospf */ |
40 | #define _QUAGGA_OSPF_MEMORY_H | |
41 | ||
2d33f157 | 42 | #include "ospfd/ospfd.h" |
43 | #include "ospfd/ospf_interface.h" | |
44 | #include "ospfd/ospf_asbr.h" | |
45 | #include "ospfd/ospf_lsa.h" | |
46 | #include "ospfd/ospf_opaque.h" | |
47 | #include "ospfd/ospf_lsdb.h" | |
48 | #include "ospfd/ospf_neighbor.h" | |
49 | #include "ospfd/ospf_dump.h" | |
19c0412a | 50 | #include "ospfd/ospf_route.h" |
2d33f157 | 51 | #include "ospfd/ospf_zebra.h" |
52 | #include "ospfd/ospf_api.h" | |
d7b4f53a | 53 | #include "ospfd/ospf_errors.h" |
2d33f157 | 54 | |
55 | #include "ospf_apiclient.h" | |
56 | ||
80413c20 | 57 | XREF_SETUP(); |
b2fa8c0f | 58 | |
bf8d3d6a DL |
59 | DEFINE_MGROUP(OSPFCLIENT, "libospfapiclient"); |
60 | DEFINE_MTYPE_STATIC(OSPFCLIENT, OSPF_APICLIENT, "OSPF-API client"); | |
fc7948fa | 61 | |
2d33f157 | 62 | /* Backlog for listen */ |
63 | #define BACKLOG 5 | |
64 | ||
65 | /* ----------------------------------------------------------- | |
66 | * Forward declarations | |
67 | * ----------------------------------------------------------- | |
68 | */ | |
69 | ||
d62a17ae | 70 | void ospf_apiclient_handle_reply(struct ospf_apiclient *oclient, |
71 | struct msg *msg); | |
72 | void ospf_apiclient_handle_update_notify(struct ospf_apiclient *oclient, | |
73 | struct msg *msg); | |
74 | void ospf_apiclient_handle_delete_notify(struct ospf_apiclient *oclient, | |
75 | struct msg *msg); | |
2d33f157 | 76 | |
77 | /* ----------------------------------------------------------- | |
78 | * Initialization | |
79 | * ----------------------------------------------------------- | |
80 | */ | |
81 | ||
d62a17ae | 82 | static unsigned short ospf_apiclient_getport(void) |
2d33f157 | 83 | { |
d62a17ae | 84 | struct servent *sp = getservbyname("ospfapi", "tcp"); |
2d33f157 | 85 | |
d62a17ae | 86 | return sp ? ntohs(sp->s_port) : OSPF_API_SYNC_PORT; |
2d33f157 | 87 | } |
88 | ||
89 | /* ----------------------------------------------------------- | |
78dfa0c7 | 90 | * Following are functions for connection management |
2d33f157 | 91 | * ----------------------------------------------------------- |
92 | */ | |
93 | ||
d62a17ae | 94 | struct ospf_apiclient *ospf_apiclient_connect(char *host, int syncport) |
2d33f157 | 95 | { |
d62a17ae | 96 | struct sockaddr_in myaddr_sync; |
97 | struct sockaddr_in myaddr_async; | |
98 | struct sockaddr_in peeraddr; | |
99 | struct hostent *hp; | |
100 | struct ospf_apiclient *new; | |
101 | int size = 0; | |
102 | unsigned int peeraddrlen; | |
103 | int async_server_sock; | |
104 | int fd1, fd2; | |
105 | int ret; | |
106 | int on = 1; | |
107 | ||
108 | /* There are two connections between the client and the server. | |
109 | First the client opens a connection for synchronous requests/replies | |
110 | to the server. The server will accept this connection and | |
111 | as a reaction open a reverse connection channel for | |
112 | asynchronous messages. */ | |
113 | ||
114 | async_server_sock = socket(AF_INET, SOCK_STREAM, 0); | |
115 | if (async_server_sock < 0) { | |
116 | fprintf(stderr, | |
117 | "ospf_apiclient_connect: creating async socket failed\n"); | |
118 | return NULL; | |
119 | } | |
120 | ||
121 | /* Prepare socket for asynchronous messages */ | |
122 | /* Initialize async address structure */ | |
6006b807 | 123 | memset(&myaddr_async, 0, sizeof(myaddr_async)); |
d62a17ae | 124 | myaddr_async.sin_family = AF_INET; |
125 | myaddr_async.sin_addr.s_addr = htonl(INADDR_ANY); | |
126 | myaddr_async.sin_port = htons(syncport + 1); | |
127 | size = sizeof(struct sockaddr_in); | |
6f0e3f6e | 128 | #ifdef HAVE_STRUCT_SOCKADDR_IN_SIN_LEN |
d62a17ae | 129 | myaddr_async.sin_len = size; |
6f0e3f6e | 130 | #endif /* HAVE_STRUCT_SOCKADDR_IN_SIN_LEN */ |
2d33f157 | 131 | |
d62a17ae | 132 | /* This is a server socket, reuse addr and port */ |
133 | ret = setsockopt(async_server_sock, SOL_SOCKET, SO_REUSEADDR, | |
134 | (void *)&on, sizeof(on)); | |
135 | if (ret < 0) { | |
136 | fprintf(stderr, | |
137 | "ospf_apiclient_connect: SO_REUSEADDR failed\n"); | |
138 | close(async_server_sock); | |
139 | return NULL; | |
140 | } | |
2d33f157 | 141 | |
142 | #ifdef SO_REUSEPORT | |
d62a17ae | 143 | ret = setsockopt(async_server_sock, SOL_SOCKET, SO_REUSEPORT, |
144 | (void *)&on, sizeof(on)); | |
145 | if (ret < 0) { | |
146 | fprintf(stderr, | |
147 | "ospf_apiclient_connect: SO_REUSEPORT failed\n"); | |
148 | close(async_server_sock); | |
149 | return NULL; | |
150 | } | |
2d33f157 | 151 | #endif /* SO_REUSEPORT */ |
152 | ||
d62a17ae | 153 | /* Bind socket to address structure */ |
154 | ret = bind(async_server_sock, (struct sockaddr *)&myaddr_async, size); | |
155 | if (ret < 0) { | |
156 | fprintf(stderr, | |
157 | "ospf_apiclient_connect: bind async socket failed\n"); | |
158 | close(async_server_sock); | |
159 | return NULL; | |
160 | } | |
161 | ||
162 | /* Wait for reverse channel connection establishment from server */ | |
163 | ret = listen(async_server_sock, BACKLOG); | |
164 | if (ret < 0) { | |
165 | fprintf(stderr, "ospf_apiclient_connect: listen: %s\n", | |
166 | safe_strerror(errno)); | |
167 | close(async_server_sock); | |
168 | return NULL; | |
169 | } | |
170 | ||
171 | /* Make connection for synchronous requests and connect to server */ | |
172 | /* Resolve address of server */ | |
173 | hp = gethostbyname(host); | |
174 | if (!hp) { | |
175 | fprintf(stderr, "ospf_apiclient_connect: no such host %s\n", | |
176 | host); | |
177 | close(async_server_sock); | |
178 | return NULL; | |
179 | } | |
180 | ||
181 | fd1 = socket(AF_INET, SOCK_STREAM, 0); | |
182 | if (fd1 < 0) { | |
183 | close(async_server_sock); | |
184 | fprintf(stderr, | |
185 | "ospf_apiclient_connect: creating sync socket failed\n"); | |
186 | return NULL; | |
187 | } | |
188 | ||
189 | ||
190 | /* Reuse addr and port */ | |
191 | ret = setsockopt(fd1, SOL_SOCKET, SO_REUSEADDR, (void *)&on, | |
192 | sizeof(on)); | |
193 | if (ret < 0) { | |
194 | fprintf(stderr, | |
195 | "ospf_apiclient_connect: SO_REUSEADDR failed\n"); | |
196 | close(fd1); | |
197 | close(async_server_sock); | |
198 | return NULL; | |
199 | } | |
2d33f157 | 200 | |
201 | #ifdef SO_REUSEPORT | |
d62a17ae | 202 | ret = setsockopt(fd1, SOL_SOCKET, SO_REUSEPORT, (void *)&on, |
203 | sizeof(on)); | |
204 | if (ret < 0) { | |
205 | fprintf(stderr, | |
206 | "ospf_apiclient_connect: SO_REUSEPORT failed\n"); | |
207 | close(fd1); | |
208 | close(async_server_sock); | |
209 | return NULL; | |
210 | } | |
2d33f157 | 211 | #endif /* SO_REUSEPORT */ |
212 | ||
213 | ||
d62a17ae | 214 | /* Bind sync socket to address structure. This is needed since we |
215 | want the sync port number on a fixed port number. The reverse | |
216 | async channel will be at this port+1 */ | |
2d33f157 | 217 | |
6006b807 | 218 | memset(&myaddr_sync, 0, sizeof(myaddr_sync)); |
d62a17ae | 219 | myaddr_sync.sin_family = AF_INET; |
220 | myaddr_sync.sin_port = htons(syncport); | |
6f0e3f6e | 221 | #ifdef HAVE_STRUCT_SOCKADDR_IN_SIN_LEN |
d62a17ae | 222 | myaddr_sync.sin_len = sizeof(struct sockaddr_in); |
6f0e3f6e | 223 | #endif /* HAVE_STRUCT_SOCKADDR_IN_SIN_LEN */ |
2d33f157 | 224 | |
d62a17ae | 225 | ret = bind(fd1, (struct sockaddr *)&myaddr_sync, size); |
226 | if (ret < 0) { | |
227 | fprintf(stderr, | |
228 | "ospf_apiclient_connect: bind sync socket failed\n"); | |
229 | close(fd1); | |
230 | close(async_server_sock); | |
231 | return NULL; | |
232 | } | |
233 | ||
234 | /* Prepare address structure for connect */ | |
235 | memcpy(&myaddr_sync.sin_addr, hp->h_addr, hp->h_length); | |
236 | myaddr_sync.sin_family = AF_INET; | |
237 | myaddr_sync.sin_port = htons(ospf_apiclient_getport()); | |
6f0e3f6e | 238 | #ifdef HAVE_STRUCT_SOCKADDR_IN_SIN_LEN |
d62a17ae | 239 | myaddr_sync.sin_len = sizeof(struct sockaddr_in); |
6f0e3f6e | 240 | #endif /* HAVE_STRUCT_SOCKADDR_IN_SIN_LEN */ |
2d33f157 | 241 | |
d62a17ae | 242 | /* Now establish synchronous channel with OSPF daemon */ |
243 | ret = connect(fd1, (struct sockaddr *)&myaddr_sync, | |
244 | sizeof(struct sockaddr_in)); | |
245 | if (ret < 0) { | |
246 | fprintf(stderr, | |
247 | "ospf_apiclient_connect: sync connect failed\n"); | |
248 | close(async_server_sock); | |
249 | close(fd1); | |
250 | return NULL; | |
251 | } | |
252 | ||
253 | /* Accept reverse connection */ | |
254 | peeraddrlen = sizeof(struct sockaddr_in); | |
255 | memset(&peeraddr, 0, peeraddrlen); | |
256 | ||
257 | fd2 = accept(async_server_sock, (struct sockaddr *)&peeraddr, | |
258 | &peeraddrlen); | |
259 | if (fd2 < 0) { | |
260 | fprintf(stderr, | |
261 | "ospf_apiclient_connect: accept async failed\n"); | |
262 | close(async_server_sock); | |
263 | close(fd1); | |
264 | close(fd2); | |
265 | return NULL; | |
266 | } | |
267 | ||
268 | /* Server socket is not needed anymore since we are not accepting more | |
269 | connections */ | |
270 | close(async_server_sock); | |
271 | ||
272 | /* Create new client-side instance */ | |
273 | new = XCALLOC(MTYPE_OSPF_APICLIENT, sizeof(struct ospf_apiclient)); | |
274 | ||
275 | /* Initialize socket descriptors for sync and async channels */ | |
276 | new->fd_sync = fd1; | |
277 | new->fd_async = fd2; | |
278 | ||
279 | return new; | |
2d33f157 | 280 | } |
281 | ||
d62a17ae | 282 | int ospf_apiclient_close(struct ospf_apiclient *oclient) |
2d33f157 | 283 | { |
284 | ||
d62a17ae | 285 | if (oclient->fd_sync >= 0) { |
286 | close(oclient->fd_sync); | |
287 | } | |
2d33f157 | 288 | |
d62a17ae | 289 | if (oclient->fd_async >= 0) { |
290 | close(oclient->fd_async); | |
291 | } | |
2d33f157 | 292 | |
d62a17ae | 293 | /* Free client structure */ |
294 | XFREE(MTYPE_OSPF_APICLIENT, oclient); | |
295 | return 0; | |
2d33f157 | 296 | } |
297 | ||
298 | /* ----------------------------------------------------------- | |
78dfa0c7 | 299 | * Following are functions to send a request to OSPFd |
2d33f157 | 300 | * ----------------------------------------------------------- |
301 | */ | |
302 | ||
303 | /* Send synchronous request, wait for reply */ | |
d62a17ae | 304 | static int ospf_apiclient_send_request(struct ospf_apiclient *oclient, |
305 | struct msg *msg) | |
2d33f157 | 306 | { |
d7c0a89a | 307 | uint32_t reqseq; |
d62a17ae | 308 | struct msg_reply *msgreply; |
309 | int rc; | |
2d33f157 | 310 | |
d62a17ae | 311 | /* NB: Given "msg" is freed inside this function. */ |
2d33f157 | 312 | |
d62a17ae | 313 | /* Remember the sequence number of the request */ |
314 | reqseq = ntohl(msg->hdr.msgseq); | |
2d33f157 | 315 | |
d62a17ae | 316 | /* Write message to OSPFd */ |
317 | rc = msg_write(oclient->fd_sync, msg); | |
318 | msg_free(msg); | |
2d33f157 | 319 | |
d62a17ae | 320 | if (rc < 0) { |
321 | return -1; | |
322 | } | |
2d33f157 | 323 | |
d62a17ae | 324 | /* Wait for reply */ /* NB: New "msg" is allocated by "msg_read()". */ |
325 | msg = msg_read(oclient->fd_sync); | |
326 | if (!msg) | |
327 | return -1; | |
2d33f157 | 328 | |
d62a17ae | 329 | assert(msg->hdr.msgtype == MSG_REPLY); |
330 | assert(ntohl(msg->hdr.msgseq) == reqseq); | |
2d33f157 | 331 | |
d62a17ae | 332 | msgreply = (struct msg_reply *)STREAM_DATA(msg->s); |
333 | rc = msgreply->errcode; | |
334 | msg_free(msg); | |
2d33f157 | 335 | |
d62a17ae | 336 | return rc; |
2d33f157 | 337 | } |
338 | ||
339 | ||
340 | /* ----------------------------------------------------------- | |
341 | * Helper functions | |
342 | * ----------------------------------------------------------- | |
343 | */ | |
344 | ||
d7c0a89a | 345 | static uint32_t ospf_apiclient_get_seqnr(void) |
2d33f157 | 346 | { |
d7c0a89a QY |
347 | static uint32_t seqnr = MIN_SEQ; |
348 | uint32_t tmp; | |
d62a17ae | 349 | |
350 | tmp = seqnr; | |
351 | /* Increment sequence number */ | |
352 | if (seqnr < MAX_SEQ) { | |
353 | seqnr++; | |
354 | } else { | |
355 | seqnr = MIN_SEQ; | |
356 | } | |
357 | return tmp; | |
2d33f157 | 358 | } |
359 | ||
360 | /* ----------------------------------------------------------- | |
361 | * API to access OSPF daemon by client applications. | |
362 | * ----------------------------------------------------------- | |
363 | */ | |
364 | ||
365 | /* | |
366 | * Synchronous request to register opaque type. | |
367 | */ | |
d7c0a89a QY |
368 | int ospf_apiclient_register_opaque_type(struct ospf_apiclient *cl, |
369 | uint8_t ltype, uint8_t otype) | |
2d33f157 | 370 | { |
d62a17ae | 371 | struct msg *msg; |
372 | int rc; | |
373 | ||
374 | /* just put 1 as a sequence number. */ | |
375 | msg = new_msg_register_opaque_type(ospf_apiclient_get_seqnr(), ltype, | |
376 | otype); | |
377 | if (!msg) { | |
378 | fprintf(stderr, "new_msg_register_opaque_type failed\n"); | |
379 | return -1; | |
380 | } | |
381 | ||
382 | rc = ospf_apiclient_send_request(cl, msg); | |
383 | return rc; | |
2d33f157 | 384 | } |
385 | ||
d62a17ae | 386 | /* |
2d33f157 | 387 | * Synchronous request to synchronize with OSPF's LSDB. |
388 | * Two steps required: register_event in order to get | |
389 | * dynamic updates and LSDB_Sync. | |
390 | */ | |
d62a17ae | 391 | int ospf_apiclient_sync_lsdb(struct ospf_apiclient *oclient) |
2d33f157 | 392 | { |
d62a17ae | 393 | struct msg *msg; |
394 | int rc; | |
395 | struct lsa_filter_type filter; | |
396 | ||
397 | filter.typemask = 0xFFFF; /* all LSAs */ | |
398 | filter.origin = ANY_ORIGIN; | |
399 | filter.num_areas = 0; /* all Areas. */ | |
400 | ||
401 | msg = new_msg_register_event(ospf_apiclient_get_seqnr(), &filter); | |
402 | if (!msg) { | |
403 | fprintf(stderr, "new_msg_register_event failed\n"); | |
404 | return -1; | |
405 | } | |
406 | rc = ospf_apiclient_send_request(oclient, msg); | |
407 | ||
408 | if (rc != 0) | |
409 | goto out; | |
410 | ||
411 | msg = new_msg_sync_lsdb(ospf_apiclient_get_seqnr(), &filter); | |
412 | if (!msg) { | |
413 | fprintf(stderr, "new_msg_sync_lsdb failed\n"); | |
414 | return -1; | |
415 | } | |
416 | rc = ospf_apiclient_send_request(oclient, msg); | |
2d33f157 | 417 | |
418 | out: | |
d62a17ae | 419 | return rc; |
2d33f157 | 420 | } |
421 | ||
d62a17ae | 422 | /* |
2d33f157 | 423 | * Synchronous request to originate or update an LSA. |
424 | */ | |
425 | ||
d62a17ae | 426 | int ospf_apiclient_lsa_originate(struct ospf_apiclient *oclient, |
427 | struct in_addr ifaddr, struct in_addr area_id, | |
d7c0a89a QY |
428 | uint8_t lsa_type, uint8_t opaque_type, |
429 | uint32_t opaque_id, void *opaquedata, | |
d62a17ae | 430 | int opaquelen) |
2d33f157 | 431 | { |
d62a17ae | 432 | struct msg *msg; |
433 | int rc; | |
d7c0a89a | 434 | uint8_t buf[OSPF_MAX_LSA_SIZE]; |
d62a17ae | 435 | struct lsa_header *lsah; |
d7c0a89a | 436 | uint32_t tmp; |
d62a17ae | 437 | |
ac62d9fd | 438 | /* Validate opaque LSA length */ |
439 | if ((size_t)opaquelen > sizeof(buf) - sizeof(struct lsa_header)) { | |
440 | fprintf(stderr, "opaquelen(%d) is larger than buf size %zu\n", | |
441 | opaquelen, sizeof(buf)); | |
442 | return OSPF_API_NOMEMORY; | |
443 | } | |
d62a17ae | 444 | |
445 | /* We can only originate opaque LSAs */ | |
446 | if (!IS_OPAQUE_LSA(lsa_type)) { | |
447 | fprintf(stderr, "Cannot originate non-opaque LSA type %d\n", | |
448 | lsa_type); | |
449 | return OSPF_API_ILLEGALLSATYPE; | |
450 | } | |
451 | ||
452 | /* Make a new LSA from parameters */ | |
453 | lsah = (struct lsa_header *)buf; | |
454 | lsah->ls_age = 0; | |
455 | lsah->options = 0; | |
456 | lsah->type = lsa_type; | |
457 | ||
458 | tmp = SET_OPAQUE_LSID(opaque_type, opaque_id); | |
459 | lsah->id.s_addr = htonl(tmp); | |
975a328e | 460 | lsah->adv_router.s_addr = INADDR_ANY; |
d62a17ae | 461 | lsah->ls_seqnum = 0; |
462 | lsah->checksum = 0; | |
463 | lsah->length = htons(sizeof(struct lsa_header) + opaquelen); | |
464 | ||
d7c0a89a | 465 | memcpy(((uint8_t *)lsah) + sizeof(struct lsa_header), opaquedata, |
d62a17ae | 466 | opaquelen); |
467 | ||
468 | msg = new_msg_originate_request(ospf_apiclient_get_seqnr(), ifaddr, | |
469 | area_id, lsah); | |
470 | if (!msg) { | |
471 | fprintf(stderr, "new_msg_originate_request failed\n"); | |
472 | return OSPF_API_NOMEMORY; | |
473 | } | |
474 | ||
475 | rc = ospf_apiclient_send_request(oclient, msg); | |
476 | return rc; | |
2d33f157 | 477 | } |
478 | ||
d62a17ae | 479 | int ospf_apiclient_lsa_delete(struct ospf_apiclient *oclient, |
08172828 | 480 | struct in_addr addr, uint8_t lsa_type, |
2f30cb25 LB |
481 | uint8_t opaque_type, uint32_t opaque_id, |
482 | uint8_t flags) | |
2d33f157 | 483 | { |
d62a17ae | 484 | struct msg *msg; |
485 | int rc; | |
486 | ||
487 | /* Only opaque LSA can be deleted */ | |
488 | if (!IS_OPAQUE_LSA(lsa_type)) { | |
489 | fprintf(stderr, "Cannot delete non-opaque LSA type %d\n", | |
490 | lsa_type); | |
491 | return OSPF_API_ILLEGALLSATYPE; | |
492 | } | |
493 | ||
494 | /* opaque_id is in host byte order and will be converted | |
495 | * to network byte order by new_msg_delete_request */ | |
08172828 | 496 | msg = new_msg_delete_request(ospf_apiclient_get_seqnr(), addr, lsa_type, |
2f30cb25 | 497 | opaque_type, opaque_id, flags); |
d62a17ae | 498 | |
499 | rc = ospf_apiclient_send_request(oclient, msg); | |
500 | return rc; | |
2d33f157 | 501 | } |
502 | ||
503 | /* ----------------------------------------------------------- | |
78dfa0c7 | 504 | * Following are handlers for messages from OSPF daemon |
2d33f157 | 505 | * ----------------------------------------------------------- |
506 | */ | |
507 | ||
d62a17ae | 508 | static void ospf_apiclient_handle_ready(struct ospf_apiclient *oclient, |
509 | struct msg *msg) | |
2d33f157 | 510 | { |
d62a17ae | 511 | struct msg_ready_notify *r; |
512 | r = (struct msg_ready_notify *)STREAM_DATA(msg->s); | |
513 | ||
514 | /* Invoke registered callback function. */ | |
515 | if (oclient->ready_notify) { | |
516 | (oclient->ready_notify)(r->lsa_type, r->opaque_type, r->addr); | |
517 | } | |
2d33f157 | 518 | } |
519 | ||
d62a17ae | 520 | static void ospf_apiclient_handle_new_if(struct ospf_apiclient *oclient, |
521 | struct msg *msg) | |
2d33f157 | 522 | { |
d62a17ae | 523 | struct msg_new_if *n; |
524 | n = (struct msg_new_if *)STREAM_DATA(msg->s); | |
525 | ||
526 | /* Invoke registered callback function. */ | |
527 | if (oclient->new_if) { | |
528 | (oclient->new_if)(n->ifaddr, n->area_id); | |
529 | } | |
2d33f157 | 530 | } |
531 | ||
d62a17ae | 532 | static void ospf_apiclient_handle_del_if(struct ospf_apiclient *oclient, |
533 | struct msg *msg) | |
2d33f157 | 534 | { |
d62a17ae | 535 | struct msg_del_if *d; |
536 | d = (struct msg_del_if *)STREAM_DATA(msg->s); | |
537 | ||
538 | /* Invoke registered callback function. */ | |
539 | if (oclient->del_if) { | |
540 | (oclient->del_if)(d->ifaddr); | |
541 | } | |
2d33f157 | 542 | } |
543 | ||
d62a17ae | 544 | static void ospf_apiclient_handle_ism_change(struct ospf_apiclient *oclient, |
545 | struct msg *msg) | |
2d33f157 | 546 | { |
d62a17ae | 547 | struct msg_ism_change *m; |
548 | m = (struct msg_ism_change *)STREAM_DATA(msg->s); | |
2d33f157 | 549 | |
d62a17ae | 550 | /* Invoke registered callback function. */ |
551 | if (oclient->ism_change) { | |
552 | (oclient->ism_change)(m->ifaddr, m->area_id, m->status); | |
553 | } | |
2d33f157 | 554 | } |
555 | ||
d62a17ae | 556 | static void ospf_apiclient_handle_nsm_change(struct ospf_apiclient *oclient, |
557 | struct msg *msg) | |
2d33f157 | 558 | { |
d62a17ae | 559 | struct msg_nsm_change *m; |
560 | m = (struct msg_nsm_change *)STREAM_DATA(msg->s); | |
561 | ||
562 | /* Invoke registered callback function. */ | |
563 | if (oclient->nsm_change) { | |
564 | (oclient->nsm_change)(m->ifaddr, m->nbraddr, m->router_id, | |
565 | m->status); | |
566 | } | |
2d33f157 | 567 | } |
568 | ||
d62a17ae | 569 | static void ospf_apiclient_handle_lsa_update(struct ospf_apiclient *oclient, |
570 | struct msg *msg) | |
2d33f157 | 571 | { |
d62a17ae | 572 | struct msg_lsa_change_notify *cn; |
573 | struct lsa_header *lsa; | |
d8193748 | 574 | void *p; |
d7b4f53a | 575 | uint16_t lsalen; |
d62a17ae | 576 | |
577 | cn = (struct msg_lsa_change_notify *)STREAM_DATA(msg->s); | |
578 | ||
579 | /* Extract LSA from message */ | |
580 | lsalen = ntohs(cn->data.length); | |
d7b4f53a DS |
581 | if (lsalen > OSPF_MAX_LSA_SIZE) { |
582 | flog_warn( | |
583 | EC_OSPF_LARGE_LSA, | |
584 | "%s: message received size: %d is greater than a LSA size: %d", | |
585 | __func__, lsalen, OSPF_MAX_LSA_SIZE); | |
586 | return; | |
587 | } | |
0ce1ca80 | 588 | |
d8193748 MS |
589 | p = XMALLOC(MTYPE_OSPF_APICLIENT, lsalen); |
590 | ||
591 | memcpy(p, &(cn->data), lsalen); | |
592 | lsa = p; | |
d62a17ae | 593 | |
594 | /* Invoke registered update callback function */ | |
595 | if (oclient->update_notify) { | |
596 | (oclient->update_notify)(cn->ifaddr, cn->area_id, | |
597 | cn->is_self_originated, lsa); | |
598 | } | |
599 | ||
600 | /* free memory allocated by ospf apiclient library */ | |
d8193748 | 601 | XFREE(MTYPE_OSPF_APICLIENT, p); |
2d33f157 | 602 | } |
603 | ||
d62a17ae | 604 | static void ospf_apiclient_handle_lsa_delete(struct ospf_apiclient *oclient, |
605 | struct msg *msg) | |
2d33f157 | 606 | { |
d62a17ae | 607 | struct msg_lsa_change_notify *cn; |
608 | struct lsa_header *lsa; | |
d8193748 | 609 | void *p; |
d7b4f53a | 610 | uint16_t lsalen; |
d62a17ae | 611 | |
612 | cn = (struct msg_lsa_change_notify *)STREAM_DATA(msg->s); | |
613 | ||
614 | /* Extract LSA from message */ | |
615 | lsalen = ntohs(cn->data.length); | |
d7b4f53a DS |
616 | if (lsalen > OSPF_MAX_LSA_SIZE) { |
617 | flog_warn( | |
618 | EC_OSPF_LARGE_LSA, | |
619 | "%s: message received size: %d is greater than a LSA size: %d", | |
620 | __func__, lsalen, OSPF_MAX_LSA_SIZE); | |
621 | return; | |
622 | } | |
0ce1ca80 | 623 | |
d8193748 MS |
624 | p = XMALLOC(MTYPE_OSPF_APICLIENT, lsalen); |
625 | ||
626 | memcpy(p, &(cn->data), lsalen); | |
627 | lsa = p; | |
d62a17ae | 628 | |
629 | /* Invoke registered update callback function */ | |
630 | if (oclient->delete_notify) { | |
631 | (oclient->delete_notify)(cn->ifaddr, cn->area_id, | |
632 | cn->is_self_originated, lsa); | |
633 | } | |
634 | ||
635 | /* free memory allocated by ospf apiclient library */ | |
d8193748 | 636 | XFREE(MTYPE_OSPF_APICLIENT, p); |
2d33f157 | 637 | } |
638 | ||
d62a17ae | 639 | static void ospf_apiclient_msghandle(struct ospf_apiclient *oclient, |
640 | struct msg *msg) | |
2d33f157 | 641 | { |
d62a17ae | 642 | /* Call message handler function. */ |
643 | switch (msg->hdr.msgtype) { | |
644 | case MSG_READY_NOTIFY: | |
645 | ospf_apiclient_handle_ready(oclient, msg); | |
646 | break; | |
647 | case MSG_NEW_IF: | |
648 | ospf_apiclient_handle_new_if(oclient, msg); | |
649 | break; | |
650 | case MSG_DEL_IF: | |
651 | ospf_apiclient_handle_del_if(oclient, msg); | |
652 | break; | |
653 | case MSG_ISM_CHANGE: | |
654 | ospf_apiclient_handle_ism_change(oclient, msg); | |
655 | break; | |
656 | case MSG_NSM_CHANGE: | |
657 | ospf_apiclient_handle_nsm_change(oclient, msg); | |
658 | break; | |
659 | case MSG_LSA_UPDATE_NOTIFY: | |
660 | ospf_apiclient_handle_lsa_update(oclient, msg); | |
661 | break; | |
662 | case MSG_LSA_DELETE_NOTIFY: | |
663 | ospf_apiclient_handle_lsa_delete(oclient, msg); | |
664 | break; | |
665 | default: | |
666 | fprintf(stderr, | |
667 | "ospf_apiclient_read: Unknown message type: %d\n", | |
668 | msg->hdr.msgtype); | |
669 | break; | |
670 | } | |
2d33f157 | 671 | } |
672 | ||
673 | /* ----------------------------------------------------------- | |
674 | * Callback handler registration | |
675 | * ----------------------------------------------------------- | |
676 | */ | |
677 | ||
d62a17ae | 678 | void ospf_apiclient_register_callback( |
679 | struct ospf_apiclient *oclient, | |
d7c0a89a | 680 | void (*ready_notify)(uint8_t lsa_type, uint8_t opaque_type, |
d62a17ae | 681 | struct in_addr addr), |
682 | void (*new_if)(struct in_addr ifaddr, struct in_addr area_id), | |
683 | void (*del_if)(struct in_addr ifaddr), | |
684 | void (*ism_change)(struct in_addr ifaddr, struct in_addr area_id, | |
d7c0a89a | 685 | uint8_t status), |
d62a17ae | 686 | void (*nsm_change)(struct in_addr ifaddr, struct in_addr nbraddr, |
d7c0a89a | 687 | struct in_addr router_id, uint8_t status), |
d62a17ae | 688 | void (*update_notify)(struct in_addr ifaddr, struct in_addr area_id, |
d7c0a89a | 689 | uint8_t self_origin, struct lsa_header *lsa), |
d62a17ae | 690 | void (*delete_notify)(struct in_addr ifaddr, struct in_addr area_id, |
d7c0a89a | 691 | uint8_t self_origin, struct lsa_header *lsa)) |
2d33f157 | 692 | { |
d62a17ae | 693 | assert(oclient); |
694 | assert(update_notify); | |
695 | ||
696 | /* Register callback function */ | |
697 | oclient->ready_notify = ready_notify; | |
698 | oclient->new_if = new_if; | |
699 | oclient->del_if = del_if; | |
700 | oclient->ism_change = ism_change; | |
701 | oclient->nsm_change = nsm_change; | |
702 | oclient->update_notify = update_notify; | |
703 | oclient->delete_notify = delete_notify; | |
2d33f157 | 704 | } |
705 | ||
706 | /* ----------------------------------------------------------- | |
707 | * Asynchronous message handling | |
708 | * ----------------------------------------------------------- | |
709 | */ | |
710 | ||
d62a17ae | 711 | int ospf_apiclient_handle_async(struct ospf_apiclient *oclient) |
2d33f157 | 712 | { |
d62a17ae | 713 | struct msg *msg; |
2d33f157 | 714 | |
d62a17ae | 715 | /* Get a message */ |
716 | msg = msg_read(oclient->fd_async); | |
2d33f157 | 717 | |
d62a17ae | 718 | if (!msg) { |
719 | /* Connection broke down */ | |
720 | return -1; | |
721 | } | |
2d33f157 | 722 | |
d62a17ae | 723 | /* Handle message */ |
724 | ospf_apiclient_msghandle(oclient, msg); | |
2d33f157 | 725 | |
d62a17ae | 726 | /* Don't forget to free this message */ |
727 | msg_free(msg); | |
2d33f157 | 728 | |
d62a17ae | 729 | return 0; |
2d33f157 | 730 | } |