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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" | |
37 | ||
5c088023 DL |
38 | /* work around gcc bug 69981, disable MTYPEs in libospf */ |
39 | #define _QUAGGA_OSPF_MEMORY_H | |
40 | ||
2d33f157 | 41 | #include "ospfd/ospfd.h" |
42 | #include "ospfd/ospf_interface.h" | |
43 | #include "ospfd/ospf_asbr.h" | |
44 | #include "ospfd/ospf_lsa.h" | |
45 | #include "ospfd/ospf_opaque.h" | |
46 | #include "ospfd/ospf_lsdb.h" | |
47 | #include "ospfd/ospf_neighbor.h" | |
48 | #include "ospfd/ospf_dump.h" | |
19c0412a | 49 | #include "ospfd/ospf_route.h" |
2d33f157 | 50 | #include "ospfd/ospf_zebra.h" |
51 | #include "ospfd/ospf_api.h" | |
52 | ||
53 | #include "ospf_apiclient.h" | |
54 | ||
bd9db8f4 DL |
55 | /* *sigh* ... can't find a better way to hammer this into automake */ |
56 | #include "ospfd/ospf_dump_api.c" | |
57 | #include "ospfd/ospf_api.c" | |
58 | ||
0a3fc2a5 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 | /* ----------------------------------------------------------- | |
90 | * Followings are functions for connection management | |
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 */ | |
123 | memset(&myaddr_async, 0, sizeof(struct sockaddr_in)); | |
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 | |
d62a17ae | 218 | memset(&myaddr_sync, 0, sizeof(struct sockaddr_in)); |
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 | /* ----------------------------------------------------------- | |
299 | * Followings are functions to send a request to OSPFd | |
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 | |
438 | ||
439 | /* We can only originate opaque LSAs */ | |
440 | if (!IS_OPAQUE_LSA(lsa_type)) { | |
441 | fprintf(stderr, "Cannot originate non-opaque LSA type %d\n", | |
442 | lsa_type); | |
443 | return OSPF_API_ILLEGALLSATYPE; | |
444 | } | |
445 | ||
446 | /* Make a new LSA from parameters */ | |
447 | lsah = (struct lsa_header *)buf; | |
448 | lsah->ls_age = 0; | |
449 | lsah->options = 0; | |
450 | lsah->type = lsa_type; | |
451 | ||
452 | tmp = SET_OPAQUE_LSID(opaque_type, opaque_id); | |
453 | lsah->id.s_addr = htonl(tmp); | |
454 | lsah->adv_router.s_addr = 0; | |
455 | lsah->ls_seqnum = 0; | |
456 | lsah->checksum = 0; | |
457 | lsah->length = htons(sizeof(struct lsa_header) + opaquelen); | |
458 | ||
d7c0a89a | 459 | memcpy(((uint8_t *)lsah) + sizeof(struct lsa_header), opaquedata, |
d62a17ae | 460 | opaquelen); |
461 | ||
462 | msg = new_msg_originate_request(ospf_apiclient_get_seqnr(), ifaddr, | |
463 | area_id, lsah); | |
464 | if (!msg) { | |
465 | fprintf(stderr, "new_msg_originate_request failed\n"); | |
466 | return OSPF_API_NOMEMORY; | |
467 | } | |
468 | ||
469 | rc = ospf_apiclient_send_request(oclient, msg); | |
470 | return rc; | |
2d33f157 | 471 | } |
472 | ||
d62a17ae | 473 | int ospf_apiclient_lsa_delete(struct ospf_apiclient *oclient, |
d7c0a89a QY |
474 | struct in_addr area_id, uint8_t lsa_type, |
475 | uint8_t opaque_type, uint32_t opaque_id) | |
2d33f157 | 476 | { |
d62a17ae | 477 | struct msg *msg; |
478 | int rc; | |
479 | ||
480 | /* Only opaque LSA can be deleted */ | |
481 | if (!IS_OPAQUE_LSA(lsa_type)) { | |
482 | fprintf(stderr, "Cannot delete non-opaque LSA type %d\n", | |
483 | lsa_type); | |
484 | return OSPF_API_ILLEGALLSATYPE; | |
485 | } | |
486 | ||
487 | /* opaque_id is in host byte order and will be converted | |
488 | * to network byte order by new_msg_delete_request */ | |
489 | msg = new_msg_delete_request(ospf_apiclient_get_seqnr(), area_id, | |
490 | lsa_type, opaque_type, opaque_id); | |
491 | ||
492 | rc = ospf_apiclient_send_request(oclient, msg); | |
493 | return rc; | |
2d33f157 | 494 | } |
495 | ||
496 | /* ----------------------------------------------------------- | |
497 | * Followings are handlers for messages from OSPF daemon | |
498 | * ----------------------------------------------------------- | |
499 | */ | |
500 | ||
d62a17ae | 501 | static void ospf_apiclient_handle_ready(struct ospf_apiclient *oclient, |
502 | struct msg *msg) | |
2d33f157 | 503 | { |
d62a17ae | 504 | struct msg_ready_notify *r; |
505 | r = (struct msg_ready_notify *)STREAM_DATA(msg->s); | |
506 | ||
507 | /* Invoke registered callback function. */ | |
508 | if (oclient->ready_notify) { | |
509 | (oclient->ready_notify)(r->lsa_type, r->opaque_type, r->addr); | |
510 | } | |
2d33f157 | 511 | } |
512 | ||
d62a17ae | 513 | static void ospf_apiclient_handle_new_if(struct ospf_apiclient *oclient, |
514 | struct msg *msg) | |
2d33f157 | 515 | { |
d62a17ae | 516 | struct msg_new_if *n; |
517 | n = (struct msg_new_if *)STREAM_DATA(msg->s); | |
518 | ||
519 | /* Invoke registered callback function. */ | |
520 | if (oclient->new_if) { | |
521 | (oclient->new_if)(n->ifaddr, n->area_id); | |
522 | } | |
2d33f157 | 523 | } |
524 | ||
d62a17ae | 525 | static void ospf_apiclient_handle_del_if(struct ospf_apiclient *oclient, |
526 | struct msg *msg) | |
2d33f157 | 527 | { |
d62a17ae | 528 | struct msg_del_if *d; |
529 | d = (struct msg_del_if *)STREAM_DATA(msg->s); | |
530 | ||
531 | /* Invoke registered callback function. */ | |
532 | if (oclient->del_if) { | |
533 | (oclient->del_if)(d->ifaddr); | |
534 | } | |
2d33f157 | 535 | } |
536 | ||
d62a17ae | 537 | static void ospf_apiclient_handle_ism_change(struct ospf_apiclient *oclient, |
538 | struct msg *msg) | |
2d33f157 | 539 | { |
d62a17ae | 540 | struct msg_ism_change *m; |
541 | m = (struct msg_ism_change *)STREAM_DATA(msg->s); | |
2d33f157 | 542 | |
d62a17ae | 543 | /* Invoke registered callback function. */ |
544 | if (oclient->ism_change) { | |
545 | (oclient->ism_change)(m->ifaddr, m->area_id, m->status); | |
546 | } | |
2d33f157 | 547 | } |
548 | ||
d62a17ae | 549 | static void ospf_apiclient_handle_nsm_change(struct ospf_apiclient *oclient, |
550 | struct msg *msg) | |
2d33f157 | 551 | { |
d62a17ae | 552 | struct msg_nsm_change *m; |
553 | m = (struct msg_nsm_change *)STREAM_DATA(msg->s); | |
554 | ||
555 | /* Invoke registered callback function. */ | |
556 | if (oclient->nsm_change) { | |
557 | (oclient->nsm_change)(m->ifaddr, m->nbraddr, m->router_id, | |
558 | m->status); | |
559 | } | |
2d33f157 | 560 | } |
561 | ||
d62a17ae | 562 | static void ospf_apiclient_handle_lsa_update(struct ospf_apiclient *oclient, |
563 | struct msg *msg) | |
2d33f157 | 564 | { |
d62a17ae | 565 | struct msg_lsa_change_notify *cn; |
566 | struct lsa_header *lsa; | |
567 | int lsalen; | |
568 | ||
569 | cn = (struct msg_lsa_change_notify *)STREAM_DATA(msg->s); | |
570 | ||
571 | /* Extract LSA from message */ | |
572 | lsalen = ntohs(cn->data.length); | |
573 | lsa = XMALLOC(MTYPE_OSPF_APICLIENT, lsalen); | |
0ce1ca80 | 574 | |
d62a17ae | 575 | memcpy(lsa, &(cn->data), lsalen); |
576 | ||
577 | /* Invoke registered update callback function */ | |
578 | if (oclient->update_notify) { | |
579 | (oclient->update_notify)(cn->ifaddr, cn->area_id, | |
580 | cn->is_self_originated, lsa); | |
581 | } | |
582 | ||
583 | /* free memory allocated by ospf apiclient library */ | |
584 | XFREE(MTYPE_OSPF_APICLIENT, lsa); | |
2d33f157 | 585 | } |
586 | ||
d62a17ae | 587 | static void ospf_apiclient_handle_lsa_delete(struct ospf_apiclient *oclient, |
588 | struct msg *msg) | |
2d33f157 | 589 | { |
d62a17ae | 590 | struct msg_lsa_change_notify *cn; |
591 | struct lsa_header *lsa; | |
592 | int lsalen; | |
593 | ||
594 | cn = (struct msg_lsa_change_notify *)STREAM_DATA(msg->s); | |
595 | ||
596 | /* Extract LSA from message */ | |
597 | lsalen = ntohs(cn->data.length); | |
598 | lsa = XMALLOC(MTYPE_OSPF_APICLIENT, lsalen); | |
0ce1ca80 | 599 | |
d62a17ae | 600 | memcpy(lsa, &(cn->data), lsalen); |
601 | ||
602 | /* Invoke registered update callback function */ | |
603 | if (oclient->delete_notify) { | |
604 | (oclient->delete_notify)(cn->ifaddr, cn->area_id, | |
605 | cn->is_self_originated, lsa); | |
606 | } | |
607 | ||
608 | /* free memory allocated by ospf apiclient library */ | |
609 | XFREE(MTYPE_OSPF_APICLIENT, lsa); | |
2d33f157 | 610 | } |
611 | ||
d62a17ae | 612 | static void ospf_apiclient_msghandle(struct ospf_apiclient *oclient, |
613 | struct msg *msg) | |
2d33f157 | 614 | { |
d62a17ae | 615 | /* Call message handler function. */ |
616 | switch (msg->hdr.msgtype) { | |
617 | case MSG_READY_NOTIFY: | |
618 | ospf_apiclient_handle_ready(oclient, msg); | |
619 | break; | |
620 | case MSG_NEW_IF: | |
621 | ospf_apiclient_handle_new_if(oclient, msg); | |
622 | break; | |
623 | case MSG_DEL_IF: | |
624 | ospf_apiclient_handle_del_if(oclient, msg); | |
625 | break; | |
626 | case MSG_ISM_CHANGE: | |
627 | ospf_apiclient_handle_ism_change(oclient, msg); | |
628 | break; | |
629 | case MSG_NSM_CHANGE: | |
630 | ospf_apiclient_handle_nsm_change(oclient, msg); | |
631 | break; | |
632 | case MSG_LSA_UPDATE_NOTIFY: | |
633 | ospf_apiclient_handle_lsa_update(oclient, msg); | |
634 | break; | |
635 | case MSG_LSA_DELETE_NOTIFY: | |
636 | ospf_apiclient_handle_lsa_delete(oclient, msg); | |
637 | break; | |
638 | default: | |
639 | fprintf(stderr, | |
640 | "ospf_apiclient_read: Unknown message type: %d\n", | |
641 | msg->hdr.msgtype); | |
642 | break; | |
643 | } | |
2d33f157 | 644 | } |
645 | ||
646 | /* ----------------------------------------------------------- | |
647 | * Callback handler registration | |
648 | * ----------------------------------------------------------- | |
649 | */ | |
650 | ||
d62a17ae | 651 | void ospf_apiclient_register_callback( |
652 | struct ospf_apiclient *oclient, | |
d7c0a89a | 653 | void (*ready_notify)(uint8_t lsa_type, uint8_t opaque_type, |
d62a17ae | 654 | struct in_addr addr), |
655 | void (*new_if)(struct in_addr ifaddr, struct in_addr area_id), | |
656 | void (*del_if)(struct in_addr ifaddr), | |
657 | void (*ism_change)(struct in_addr ifaddr, struct in_addr area_id, | |
d7c0a89a | 658 | uint8_t status), |
d62a17ae | 659 | void (*nsm_change)(struct in_addr ifaddr, struct in_addr nbraddr, |
d7c0a89a | 660 | struct in_addr router_id, uint8_t status), |
d62a17ae | 661 | void (*update_notify)(struct in_addr ifaddr, struct in_addr area_id, |
d7c0a89a | 662 | uint8_t self_origin, struct lsa_header *lsa), |
d62a17ae | 663 | void (*delete_notify)(struct in_addr ifaddr, struct in_addr area_id, |
d7c0a89a | 664 | uint8_t self_origin, struct lsa_header *lsa)) |
2d33f157 | 665 | { |
d62a17ae | 666 | assert(oclient); |
667 | assert(update_notify); | |
668 | ||
669 | /* Register callback function */ | |
670 | oclient->ready_notify = ready_notify; | |
671 | oclient->new_if = new_if; | |
672 | oclient->del_if = del_if; | |
673 | oclient->ism_change = ism_change; | |
674 | oclient->nsm_change = nsm_change; | |
675 | oclient->update_notify = update_notify; | |
676 | oclient->delete_notify = delete_notify; | |
2d33f157 | 677 | } |
678 | ||
679 | /* ----------------------------------------------------------- | |
680 | * Asynchronous message handling | |
681 | * ----------------------------------------------------------- | |
682 | */ | |
683 | ||
d62a17ae | 684 | int ospf_apiclient_handle_async(struct ospf_apiclient *oclient) |
2d33f157 | 685 | { |
d62a17ae | 686 | struct msg *msg; |
2d33f157 | 687 | |
d62a17ae | 688 | /* Get a message */ |
689 | msg = msg_read(oclient->fd_async); | |
2d33f157 | 690 | |
d62a17ae | 691 | if (!msg) { |
692 | /* Connection broke down */ | |
693 | return -1; | |
694 | } | |
2d33f157 | 695 | |
d62a17ae | 696 | /* Handle message */ |
697 | ospf_apiclient_msghandle(oclient, msg); | |
2d33f157 | 698 | |
d62a17ae | 699 | /* Don't forget to free this message */ |
700 | msg_free(msg); | |
2d33f157 | 701 | |
d62a17ae | 702 | return 0; |
2d33f157 | 703 | } |