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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 | ||
bd9db8f4 DL |
57 | /* *sigh* ... can't find a better way to hammer this into automake */ |
58 | #include "ospfd/ospf_dump_api.c" | |
59 | #include "ospfd/ospf_api.c" | |
60 | ||
80413c20 | 61 | XREF_SETUP(); |
b2fa8c0f | 62 | |
bf8d3d6a DL |
63 | DEFINE_MGROUP(OSPFCLIENT, "libospfapiclient"); |
64 | DEFINE_MTYPE_STATIC(OSPFCLIENT, OSPF_APICLIENT, "OSPF-API client"); | |
fc7948fa | 65 | |
2d33f157 | 66 | /* Backlog for listen */ |
67 | #define BACKLOG 5 | |
68 | ||
69 | /* ----------------------------------------------------------- | |
70 | * Forward declarations | |
71 | * ----------------------------------------------------------- | |
72 | */ | |
73 | ||
d62a17ae | 74 | void ospf_apiclient_handle_reply(struct ospf_apiclient *oclient, |
75 | struct msg *msg); | |
76 | void ospf_apiclient_handle_update_notify(struct ospf_apiclient *oclient, | |
77 | struct msg *msg); | |
78 | void ospf_apiclient_handle_delete_notify(struct ospf_apiclient *oclient, | |
79 | struct msg *msg); | |
2d33f157 | 80 | |
81 | /* ----------------------------------------------------------- | |
82 | * Initialization | |
83 | * ----------------------------------------------------------- | |
84 | */ | |
85 | ||
d62a17ae | 86 | static unsigned short ospf_apiclient_getport(void) |
2d33f157 | 87 | { |
d62a17ae | 88 | struct servent *sp = getservbyname("ospfapi", "tcp"); |
2d33f157 | 89 | |
d62a17ae | 90 | return sp ? ntohs(sp->s_port) : OSPF_API_SYNC_PORT; |
2d33f157 | 91 | } |
92 | ||
93 | /* ----------------------------------------------------------- | |
94 | * Followings are functions for connection management | |
95 | * ----------------------------------------------------------- | |
96 | */ | |
97 | ||
d62a17ae | 98 | struct ospf_apiclient *ospf_apiclient_connect(char *host, int syncport) |
2d33f157 | 99 | { |
d62a17ae | 100 | struct sockaddr_in myaddr_sync; |
101 | struct sockaddr_in myaddr_async; | |
102 | struct sockaddr_in peeraddr; | |
103 | struct hostent *hp; | |
104 | struct ospf_apiclient *new; | |
105 | int size = 0; | |
106 | unsigned int peeraddrlen; | |
107 | int async_server_sock; | |
108 | int fd1, fd2; | |
109 | int ret; | |
110 | int on = 1; | |
111 | ||
112 | /* There are two connections between the client and the server. | |
113 | First the client opens a connection for synchronous requests/replies | |
114 | to the server. The server will accept this connection and | |
115 | as a reaction open a reverse connection channel for | |
116 | asynchronous messages. */ | |
117 | ||
118 | async_server_sock = socket(AF_INET, SOCK_STREAM, 0); | |
119 | if (async_server_sock < 0) { | |
120 | fprintf(stderr, | |
121 | "ospf_apiclient_connect: creating async socket failed\n"); | |
122 | return NULL; | |
123 | } | |
124 | ||
125 | /* Prepare socket for asynchronous messages */ | |
126 | /* Initialize async address structure */ | |
127 | memset(&myaddr_async, 0, sizeof(struct sockaddr_in)); | |
128 | myaddr_async.sin_family = AF_INET; | |
129 | myaddr_async.sin_addr.s_addr = htonl(INADDR_ANY); | |
130 | myaddr_async.sin_port = htons(syncport + 1); | |
131 | size = sizeof(struct sockaddr_in); | |
6f0e3f6e | 132 | #ifdef HAVE_STRUCT_SOCKADDR_IN_SIN_LEN |
d62a17ae | 133 | myaddr_async.sin_len = size; |
6f0e3f6e | 134 | #endif /* HAVE_STRUCT_SOCKADDR_IN_SIN_LEN */ |
2d33f157 | 135 | |
d62a17ae | 136 | /* This is a server socket, reuse addr and port */ |
137 | ret = setsockopt(async_server_sock, SOL_SOCKET, SO_REUSEADDR, | |
138 | (void *)&on, sizeof(on)); | |
139 | if (ret < 0) { | |
140 | fprintf(stderr, | |
141 | "ospf_apiclient_connect: SO_REUSEADDR failed\n"); | |
142 | close(async_server_sock); | |
143 | return NULL; | |
144 | } | |
2d33f157 | 145 | |
146 | #ifdef SO_REUSEPORT | |
d62a17ae | 147 | ret = setsockopt(async_server_sock, SOL_SOCKET, SO_REUSEPORT, |
148 | (void *)&on, sizeof(on)); | |
149 | if (ret < 0) { | |
150 | fprintf(stderr, | |
151 | "ospf_apiclient_connect: SO_REUSEPORT failed\n"); | |
152 | close(async_server_sock); | |
153 | return NULL; | |
154 | } | |
2d33f157 | 155 | #endif /* SO_REUSEPORT */ |
156 | ||
d62a17ae | 157 | /* Bind socket to address structure */ |
158 | ret = bind(async_server_sock, (struct sockaddr *)&myaddr_async, size); | |
159 | if (ret < 0) { | |
160 | fprintf(stderr, | |
161 | "ospf_apiclient_connect: bind async socket failed\n"); | |
162 | close(async_server_sock); | |
163 | return NULL; | |
164 | } | |
165 | ||
166 | /* Wait for reverse channel connection establishment from server */ | |
167 | ret = listen(async_server_sock, BACKLOG); | |
168 | if (ret < 0) { | |
169 | fprintf(stderr, "ospf_apiclient_connect: listen: %s\n", | |
170 | safe_strerror(errno)); | |
171 | close(async_server_sock); | |
172 | return NULL; | |
173 | } | |
174 | ||
175 | /* Make connection for synchronous requests and connect to server */ | |
176 | /* Resolve address of server */ | |
177 | hp = gethostbyname(host); | |
178 | if (!hp) { | |
179 | fprintf(stderr, "ospf_apiclient_connect: no such host %s\n", | |
180 | host); | |
181 | close(async_server_sock); | |
182 | return NULL; | |
183 | } | |
184 | ||
185 | fd1 = socket(AF_INET, SOCK_STREAM, 0); | |
186 | if (fd1 < 0) { | |
187 | close(async_server_sock); | |
188 | fprintf(stderr, | |
189 | "ospf_apiclient_connect: creating sync socket failed\n"); | |
190 | return NULL; | |
191 | } | |
192 | ||
193 | ||
194 | /* Reuse addr and port */ | |
195 | ret = setsockopt(fd1, SOL_SOCKET, SO_REUSEADDR, (void *)&on, | |
196 | sizeof(on)); | |
197 | if (ret < 0) { | |
198 | fprintf(stderr, | |
199 | "ospf_apiclient_connect: SO_REUSEADDR failed\n"); | |
200 | close(fd1); | |
201 | close(async_server_sock); | |
202 | return NULL; | |
203 | } | |
2d33f157 | 204 | |
205 | #ifdef SO_REUSEPORT | |
d62a17ae | 206 | ret = setsockopt(fd1, SOL_SOCKET, SO_REUSEPORT, (void *)&on, |
207 | sizeof(on)); | |
208 | if (ret < 0) { | |
209 | fprintf(stderr, | |
210 | "ospf_apiclient_connect: SO_REUSEPORT failed\n"); | |
211 | close(fd1); | |
212 | close(async_server_sock); | |
213 | return NULL; | |
214 | } | |
2d33f157 | 215 | #endif /* SO_REUSEPORT */ |
216 | ||
217 | ||
d62a17ae | 218 | /* Bind sync socket to address structure. This is needed since we |
219 | want the sync port number on a fixed port number. The reverse | |
220 | async channel will be at this port+1 */ | |
2d33f157 | 221 | |
d62a17ae | 222 | memset(&myaddr_sync, 0, sizeof(struct sockaddr_in)); |
223 | myaddr_sync.sin_family = AF_INET; | |
224 | myaddr_sync.sin_port = htons(syncport); | |
6f0e3f6e | 225 | #ifdef HAVE_STRUCT_SOCKADDR_IN_SIN_LEN |
d62a17ae | 226 | myaddr_sync.sin_len = sizeof(struct sockaddr_in); |
6f0e3f6e | 227 | #endif /* HAVE_STRUCT_SOCKADDR_IN_SIN_LEN */ |
2d33f157 | 228 | |
d62a17ae | 229 | ret = bind(fd1, (struct sockaddr *)&myaddr_sync, size); |
230 | if (ret < 0) { | |
231 | fprintf(stderr, | |
232 | "ospf_apiclient_connect: bind sync socket failed\n"); | |
233 | close(fd1); | |
234 | close(async_server_sock); | |
235 | return NULL; | |
236 | } | |
237 | ||
238 | /* Prepare address structure for connect */ | |
239 | memcpy(&myaddr_sync.sin_addr, hp->h_addr, hp->h_length); | |
240 | myaddr_sync.sin_family = AF_INET; | |
241 | myaddr_sync.sin_port = htons(ospf_apiclient_getport()); | |
6f0e3f6e | 242 | #ifdef HAVE_STRUCT_SOCKADDR_IN_SIN_LEN |
d62a17ae | 243 | myaddr_sync.sin_len = sizeof(struct sockaddr_in); |
6f0e3f6e | 244 | #endif /* HAVE_STRUCT_SOCKADDR_IN_SIN_LEN */ |
2d33f157 | 245 | |
d62a17ae | 246 | /* Now establish synchronous channel with OSPF daemon */ |
247 | ret = connect(fd1, (struct sockaddr *)&myaddr_sync, | |
248 | sizeof(struct sockaddr_in)); | |
249 | if (ret < 0) { | |
250 | fprintf(stderr, | |
251 | "ospf_apiclient_connect: sync connect failed\n"); | |
252 | close(async_server_sock); | |
253 | close(fd1); | |
254 | return NULL; | |
255 | } | |
256 | ||
257 | /* Accept reverse connection */ | |
258 | peeraddrlen = sizeof(struct sockaddr_in); | |
259 | memset(&peeraddr, 0, peeraddrlen); | |
260 | ||
261 | fd2 = accept(async_server_sock, (struct sockaddr *)&peeraddr, | |
262 | &peeraddrlen); | |
263 | if (fd2 < 0) { | |
264 | fprintf(stderr, | |
265 | "ospf_apiclient_connect: accept async failed\n"); | |
266 | close(async_server_sock); | |
267 | close(fd1); | |
268 | close(fd2); | |
269 | return NULL; | |
270 | } | |
271 | ||
272 | /* Server socket is not needed anymore since we are not accepting more | |
273 | connections */ | |
274 | close(async_server_sock); | |
275 | ||
276 | /* Create new client-side instance */ | |
277 | new = XCALLOC(MTYPE_OSPF_APICLIENT, sizeof(struct ospf_apiclient)); | |
278 | ||
279 | /* Initialize socket descriptors for sync and async channels */ | |
280 | new->fd_sync = fd1; | |
281 | new->fd_async = fd2; | |
282 | ||
283 | return new; | |
2d33f157 | 284 | } |
285 | ||
d62a17ae | 286 | int ospf_apiclient_close(struct ospf_apiclient *oclient) |
2d33f157 | 287 | { |
288 | ||
d62a17ae | 289 | if (oclient->fd_sync >= 0) { |
290 | close(oclient->fd_sync); | |
291 | } | |
2d33f157 | 292 | |
d62a17ae | 293 | if (oclient->fd_async >= 0) { |
294 | close(oclient->fd_async); | |
295 | } | |
2d33f157 | 296 | |
d62a17ae | 297 | /* Free client structure */ |
298 | XFREE(MTYPE_OSPF_APICLIENT, oclient); | |
299 | return 0; | |
2d33f157 | 300 | } |
301 | ||
302 | /* ----------------------------------------------------------- | |
303 | * Followings are functions to send a request to OSPFd | |
304 | * ----------------------------------------------------------- | |
305 | */ | |
306 | ||
307 | /* Send synchronous request, wait for reply */ | |
d62a17ae | 308 | static int ospf_apiclient_send_request(struct ospf_apiclient *oclient, |
309 | struct msg *msg) | |
2d33f157 | 310 | { |
d7c0a89a | 311 | uint32_t reqseq; |
d62a17ae | 312 | struct msg_reply *msgreply; |
313 | int rc; | |
2d33f157 | 314 | |
d62a17ae | 315 | /* NB: Given "msg" is freed inside this function. */ |
2d33f157 | 316 | |
d62a17ae | 317 | /* Remember the sequence number of the request */ |
318 | reqseq = ntohl(msg->hdr.msgseq); | |
2d33f157 | 319 | |
d62a17ae | 320 | /* Write message to OSPFd */ |
321 | rc = msg_write(oclient->fd_sync, msg); | |
322 | msg_free(msg); | |
2d33f157 | 323 | |
d62a17ae | 324 | if (rc < 0) { |
325 | return -1; | |
326 | } | |
2d33f157 | 327 | |
d62a17ae | 328 | /* Wait for reply */ /* NB: New "msg" is allocated by "msg_read()". */ |
329 | msg = msg_read(oclient->fd_sync); | |
330 | if (!msg) | |
331 | return -1; | |
2d33f157 | 332 | |
d62a17ae | 333 | assert(msg->hdr.msgtype == MSG_REPLY); |
334 | assert(ntohl(msg->hdr.msgseq) == reqseq); | |
2d33f157 | 335 | |
d62a17ae | 336 | msgreply = (struct msg_reply *)STREAM_DATA(msg->s); |
337 | rc = msgreply->errcode; | |
338 | msg_free(msg); | |
2d33f157 | 339 | |
d62a17ae | 340 | return rc; |
2d33f157 | 341 | } |
342 | ||
343 | ||
344 | /* ----------------------------------------------------------- | |
345 | * Helper functions | |
346 | * ----------------------------------------------------------- | |
347 | */ | |
348 | ||
d7c0a89a | 349 | static uint32_t ospf_apiclient_get_seqnr(void) |
2d33f157 | 350 | { |
d7c0a89a QY |
351 | static uint32_t seqnr = MIN_SEQ; |
352 | uint32_t tmp; | |
d62a17ae | 353 | |
354 | tmp = seqnr; | |
355 | /* Increment sequence number */ | |
356 | if (seqnr < MAX_SEQ) { | |
357 | seqnr++; | |
358 | } else { | |
359 | seqnr = MIN_SEQ; | |
360 | } | |
361 | return tmp; | |
2d33f157 | 362 | } |
363 | ||
364 | /* ----------------------------------------------------------- | |
365 | * API to access OSPF daemon by client applications. | |
366 | * ----------------------------------------------------------- | |
367 | */ | |
368 | ||
369 | /* | |
370 | * Synchronous request to register opaque type. | |
371 | */ | |
d7c0a89a QY |
372 | int ospf_apiclient_register_opaque_type(struct ospf_apiclient *cl, |
373 | uint8_t ltype, uint8_t otype) | |
2d33f157 | 374 | { |
d62a17ae | 375 | struct msg *msg; |
376 | int rc; | |
377 | ||
378 | /* just put 1 as a sequence number. */ | |
379 | msg = new_msg_register_opaque_type(ospf_apiclient_get_seqnr(), ltype, | |
380 | otype); | |
381 | if (!msg) { | |
382 | fprintf(stderr, "new_msg_register_opaque_type failed\n"); | |
383 | return -1; | |
384 | } | |
385 | ||
386 | rc = ospf_apiclient_send_request(cl, msg); | |
387 | return rc; | |
2d33f157 | 388 | } |
389 | ||
d62a17ae | 390 | /* |
2d33f157 | 391 | * Synchronous request to synchronize with OSPF's LSDB. |
392 | * Two steps required: register_event in order to get | |
393 | * dynamic updates and LSDB_Sync. | |
394 | */ | |
d62a17ae | 395 | int ospf_apiclient_sync_lsdb(struct ospf_apiclient *oclient) |
2d33f157 | 396 | { |
d62a17ae | 397 | struct msg *msg; |
398 | int rc; | |
399 | struct lsa_filter_type filter; | |
400 | ||
401 | filter.typemask = 0xFFFF; /* all LSAs */ | |
402 | filter.origin = ANY_ORIGIN; | |
403 | filter.num_areas = 0; /* all Areas. */ | |
404 | ||
405 | msg = new_msg_register_event(ospf_apiclient_get_seqnr(), &filter); | |
406 | if (!msg) { | |
407 | fprintf(stderr, "new_msg_register_event failed\n"); | |
408 | return -1; | |
409 | } | |
410 | rc = ospf_apiclient_send_request(oclient, msg); | |
411 | ||
412 | if (rc != 0) | |
413 | goto out; | |
414 | ||
415 | msg = new_msg_sync_lsdb(ospf_apiclient_get_seqnr(), &filter); | |
416 | if (!msg) { | |
417 | fprintf(stderr, "new_msg_sync_lsdb failed\n"); | |
418 | return -1; | |
419 | } | |
420 | rc = ospf_apiclient_send_request(oclient, msg); | |
2d33f157 | 421 | |
422 | out: | |
d62a17ae | 423 | return rc; |
2d33f157 | 424 | } |
425 | ||
d62a17ae | 426 | /* |
2d33f157 | 427 | * Synchronous request to originate or update an LSA. |
428 | */ | |
429 | ||
d62a17ae | 430 | int ospf_apiclient_lsa_originate(struct ospf_apiclient *oclient, |
431 | struct in_addr ifaddr, struct in_addr area_id, | |
d7c0a89a QY |
432 | uint8_t lsa_type, uint8_t opaque_type, |
433 | uint32_t opaque_id, void *opaquedata, | |
d62a17ae | 434 | int opaquelen) |
2d33f157 | 435 | { |
d62a17ae | 436 | struct msg *msg; |
437 | int rc; | |
d7c0a89a | 438 | uint8_t buf[OSPF_MAX_LSA_SIZE]; |
d62a17ae | 439 | struct lsa_header *lsah; |
d7c0a89a | 440 | uint32_t tmp; |
d62a17ae | 441 | |
442 | ||
443 | /* We can only originate opaque LSAs */ | |
444 | if (!IS_OPAQUE_LSA(lsa_type)) { | |
445 | fprintf(stderr, "Cannot originate non-opaque LSA type %d\n", | |
446 | lsa_type); | |
447 | return OSPF_API_ILLEGALLSATYPE; | |
448 | } | |
449 | ||
450 | /* Make a new LSA from parameters */ | |
451 | lsah = (struct lsa_header *)buf; | |
452 | lsah->ls_age = 0; | |
453 | lsah->options = 0; | |
454 | lsah->type = lsa_type; | |
455 | ||
456 | tmp = SET_OPAQUE_LSID(opaque_type, opaque_id); | |
457 | lsah->id.s_addr = htonl(tmp); | |
975a328e | 458 | lsah->adv_router.s_addr = INADDR_ANY; |
d62a17ae | 459 | lsah->ls_seqnum = 0; |
460 | lsah->checksum = 0; | |
461 | lsah->length = htons(sizeof(struct lsa_header) + opaquelen); | |
462 | ||
d7c0a89a | 463 | memcpy(((uint8_t *)lsah) + sizeof(struct lsa_header), opaquedata, |
d62a17ae | 464 | opaquelen); |
465 | ||
466 | msg = new_msg_originate_request(ospf_apiclient_get_seqnr(), ifaddr, | |
467 | area_id, lsah); | |
468 | if (!msg) { | |
469 | fprintf(stderr, "new_msg_originate_request failed\n"); | |
470 | return OSPF_API_NOMEMORY; | |
471 | } | |
472 | ||
473 | rc = ospf_apiclient_send_request(oclient, msg); | |
474 | return rc; | |
2d33f157 | 475 | } |
476 | ||
d62a17ae | 477 | int ospf_apiclient_lsa_delete(struct ospf_apiclient *oclient, |
d7c0a89a QY |
478 | struct in_addr area_id, uint8_t lsa_type, |
479 | uint8_t opaque_type, uint32_t opaque_id) | |
2d33f157 | 480 | { |
d62a17ae | 481 | struct msg *msg; |
482 | int rc; | |
483 | ||
484 | /* Only opaque LSA can be deleted */ | |
485 | if (!IS_OPAQUE_LSA(lsa_type)) { | |
486 | fprintf(stderr, "Cannot delete non-opaque LSA type %d\n", | |
487 | lsa_type); | |
488 | return OSPF_API_ILLEGALLSATYPE; | |
489 | } | |
490 | ||
491 | /* opaque_id is in host byte order and will be converted | |
492 | * to network byte order by new_msg_delete_request */ | |
493 | msg = new_msg_delete_request(ospf_apiclient_get_seqnr(), area_id, | |
494 | lsa_type, opaque_type, opaque_id); | |
495 | ||
496 | rc = ospf_apiclient_send_request(oclient, msg); | |
497 | return rc; | |
2d33f157 | 498 | } |
499 | ||
500 | /* ----------------------------------------------------------- | |
501 | * Followings are handlers for messages from OSPF daemon | |
502 | * ----------------------------------------------------------- | |
503 | */ | |
504 | ||
d62a17ae | 505 | static void ospf_apiclient_handle_ready(struct ospf_apiclient *oclient, |
506 | struct msg *msg) | |
2d33f157 | 507 | { |
d62a17ae | 508 | struct msg_ready_notify *r; |
509 | r = (struct msg_ready_notify *)STREAM_DATA(msg->s); | |
510 | ||
511 | /* Invoke registered callback function. */ | |
512 | if (oclient->ready_notify) { | |
513 | (oclient->ready_notify)(r->lsa_type, r->opaque_type, r->addr); | |
514 | } | |
2d33f157 | 515 | } |
516 | ||
d62a17ae | 517 | static void ospf_apiclient_handle_new_if(struct ospf_apiclient *oclient, |
518 | struct msg *msg) | |
2d33f157 | 519 | { |
d62a17ae | 520 | struct msg_new_if *n; |
521 | n = (struct msg_new_if *)STREAM_DATA(msg->s); | |
522 | ||
523 | /* Invoke registered callback function. */ | |
524 | if (oclient->new_if) { | |
525 | (oclient->new_if)(n->ifaddr, n->area_id); | |
526 | } | |
2d33f157 | 527 | } |
528 | ||
d62a17ae | 529 | static void ospf_apiclient_handle_del_if(struct ospf_apiclient *oclient, |
530 | struct msg *msg) | |
2d33f157 | 531 | { |
d62a17ae | 532 | struct msg_del_if *d; |
533 | d = (struct msg_del_if *)STREAM_DATA(msg->s); | |
534 | ||
535 | /* Invoke registered callback function. */ | |
536 | if (oclient->del_if) { | |
537 | (oclient->del_if)(d->ifaddr); | |
538 | } | |
2d33f157 | 539 | } |
540 | ||
d62a17ae | 541 | static void ospf_apiclient_handle_ism_change(struct ospf_apiclient *oclient, |
542 | struct msg *msg) | |
2d33f157 | 543 | { |
d62a17ae | 544 | struct msg_ism_change *m; |
545 | m = (struct msg_ism_change *)STREAM_DATA(msg->s); | |
2d33f157 | 546 | |
d62a17ae | 547 | /* Invoke registered callback function. */ |
548 | if (oclient->ism_change) { | |
549 | (oclient->ism_change)(m->ifaddr, m->area_id, m->status); | |
550 | } | |
2d33f157 | 551 | } |
552 | ||
d62a17ae | 553 | static void ospf_apiclient_handle_nsm_change(struct ospf_apiclient *oclient, |
554 | struct msg *msg) | |
2d33f157 | 555 | { |
d62a17ae | 556 | struct msg_nsm_change *m; |
557 | m = (struct msg_nsm_change *)STREAM_DATA(msg->s); | |
558 | ||
559 | /* Invoke registered callback function. */ | |
560 | if (oclient->nsm_change) { | |
561 | (oclient->nsm_change)(m->ifaddr, m->nbraddr, m->router_id, | |
562 | m->status); | |
563 | } | |
2d33f157 | 564 | } |
565 | ||
d62a17ae | 566 | static void ospf_apiclient_handle_lsa_update(struct ospf_apiclient *oclient, |
567 | struct msg *msg) | |
2d33f157 | 568 | { |
d62a17ae | 569 | struct msg_lsa_change_notify *cn; |
570 | struct lsa_header *lsa; | |
d8193748 | 571 | void *p; |
d7b4f53a | 572 | uint16_t lsalen; |
d62a17ae | 573 | |
574 | cn = (struct msg_lsa_change_notify *)STREAM_DATA(msg->s); | |
575 | ||
576 | /* Extract LSA from message */ | |
577 | lsalen = ntohs(cn->data.length); | |
d7b4f53a DS |
578 | if (lsalen > OSPF_MAX_LSA_SIZE) { |
579 | flog_warn( | |
580 | EC_OSPF_LARGE_LSA, | |
581 | "%s: message received size: %d is greater than a LSA size: %d", | |
582 | __func__, lsalen, OSPF_MAX_LSA_SIZE); | |
583 | return; | |
584 | } | |
0ce1ca80 | 585 | |
d8193748 MS |
586 | p = XMALLOC(MTYPE_OSPF_APICLIENT, lsalen); |
587 | ||
588 | memcpy(p, &(cn->data), lsalen); | |
589 | lsa = p; | |
d62a17ae | 590 | |
591 | /* Invoke registered update callback function */ | |
592 | if (oclient->update_notify) { | |
593 | (oclient->update_notify)(cn->ifaddr, cn->area_id, | |
594 | cn->is_self_originated, lsa); | |
595 | } | |
596 | ||
597 | /* free memory allocated by ospf apiclient library */ | |
d8193748 | 598 | XFREE(MTYPE_OSPF_APICLIENT, p); |
2d33f157 | 599 | } |
600 | ||
d62a17ae | 601 | static void ospf_apiclient_handle_lsa_delete(struct ospf_apiclient *oclient, |
602 | struct msg *msg) | |
2d33f157 | 603 | { |
d62a17ae | 604 | struct msg_lsa_change_notify *cn; |
605 | struct lsa_header *lsa; | |
d8193748 | 606 | void *p; |
d7b4f53a | 607 | uint16_t lsalen; |
d62a17ae | 608 | |
609 | cn = (struct msg_lsa_change_notify *)STREAM_DATA(msg->s); | |
610 | ||
611 | /* Extract LSA from message */ | |
612 | lsalen = ntohs(cn->data.length); | |
d7b4f53a DS |
613 | if (lsalen > OSPF_MAX_LSA_SIZE) { |
614 | flog_warn( | |
615 | EC_OSPF_LARGE_LSA, | |
616 | "%s: message received size: %d is greater than a LSA size: %d", | |
617 | __func__, lsalen, OSPF_MAX_LSA_SIZE); | |
618 | return; | |
619 | } | |
0ce1ca80 | 620 | |
d8193748 MS |
621 | p = XMALLOC(MTYPE_OSPF_APICLIENT, lsalen); |
622 | ||
623 | memcpy(p, &(cn->data), lsalen); | |
624 | lsa = p; | |
d62a17ae | 625 | |
626 | /* Invoke registered update callback function */ | |
627 | if (oclient->delete_notify) { | |
628 | (oclient->delete_notify)(cn->ifaddr, cn->area_id, | |
629 | cn->is_self_originated, lsa); | |
630 | } | |
631 | ||
632 | /* free memory allocated by ospf apiclient library */ | |
d8193748 | 633 | XFREE(MTYPE_OSPF_APICLIENT, p); |
2d33f157 | 634 | } |
635 | ||
d62a17ae | 636 | static void ospf_apiclient_msghandle(struct ospf_apiclient *oclient, |
637 | struct msg *msg) | |
2d33f157 | 638 | { |
d62a17ae | 639 | /* Call message handler function. */ |
640 | switch (msg->hdr.msgtype) { | |
641 | case MSG_READY_NOTIFY: | |
642 | ospf_apiclient_handle_ready(oclient, msg); | |
643 | break; | |
644 | case MSG_NEW_IF: | |
645 | ospf_apiclient_handle_new_if(oclient, msg); | |
646 | break; | |
647 | case MSG_DEL_IF: | |
648 | ospf_apiclient_handle_del_if(oclient, msg); | |
649 | break; | |
650 | case MSG_ISM_CHANGE: | |
651 | ospf_apiclient_handle_ism_change(oclient, msg); | |
652 | break; | |
653 | case MSG_NSM_CHANGE: | |
654 | ospf_apiclient_handle_nsm_change(oclient, msg); | |
655 | break; | |
656 | case MSG_LSA_UPDATE_NOTIFY: | |
657 | ospf_apiclient_handle_lsa_update(oclient, msg); | |
658 | break; | |
659 | case MSG_LSA_DELETE_NOTIFY: | |
660 | ospf_apiclient_handle_lsa_delete(oclient, msg); | |
661 | break; | |
662 | default: | |
663 | fprintf(stderr, | |
664 | "ospf_apiclient_read: Unknown message type: %d\n", | |
665 | msg->hdr.msgtype); | |
666 | break; | |
667 | } | |
2d33f157 | 668 | } |
669 | ||
670 | /* ----------------------------------------------------------- | |
671 | * Callback handler registration | |
672 | * ----------------------------------------------------------- | |
673 | */ | |
674 | ||
d62a17ae | 675 | void ospf_apiclient_register_callback( |
676 | struct ospf_apiclient *oclient, | |
d7c0a89a | 677 | void (*ready_notify)(uint8_t lsa_type, uint8_t opaque_type, |
d62a17ae | 678 | struct in_addr addr), |
679 | void (*new_if)(struct in_addr ifaddr, struct in_addr area_id), | |
680 | void (*del_if)(struct in_addr ifaddr), | |
681 | void (*ism_change)(struct in_addr ifaddr, struct in_addr area_id, | |
d7c0a89a | 682 | uint8_t status), |
d62a17ae | 683 | void (*nsm_change)(struct in_addr ifaddr, struct in_addr nbraddr, |
d7c0a89a | 684 | struct in_addr router_id, uint8_t status), |
d62a17ae | 685 | void (*update_notify)(struct in_addr ifaddr, struct in_addr area_id, |
d7c0a89a | 686 | uint8_t self_origin, struct lsa_header *lsa), |
d62a17ae | 687 | void (*delete_notify)(struct in_addr ifaddr, struct in_addr area_id, |
d7c0a89a | 688 | uint8_t self_origin, struct lsa_header *lsa)) |
2d33f157 | 689 | { |
d62a17ae | 690 | assert(oclient); |
691 | assert(update_notify); | |
692 | ||
693 | /* Register callback function */ | |
694 | oclient->ready_notify = ready_notify; | |
695 | oclient->new_if = new_if; | |
696 | oclient->del_if = del_if; | |
697 | oclient->ism_change = ism_change; | |
698 | oclient->nsm_change = nsm_change; | |
699 | oclient->update_notify = update_notify; | |
700 | oclient->delete_notify = delete_notify; | |
2d33f157 | 701 | } |
702 | ||
703 | /* ----------------------------------------------------------- | |
704 | * Asynchronous message handling | |
705 | * ----------------------------------------------------------- | |
706 | */ | |
707 | ||
d62a17ae | 708 | int ospf_apiclient_handle_async(struct ospf_apiclient *oclient) |
2d33f157 | 709 | { |
d62a17ae | 710 | struct msg *msg; |
2d33f157 | 711 | |
d62a17ae | 712 | /* Get a message */ |
713 | msg = msg_read(oclient->fd_async); | |
2d33f157 | 714 | |
d62a17ae | 715 | if (!msg) { |
716 | /* Connection broke down */ | |
717 | return -1; | |
718 | } | |
2d33f157 | 719 | |
d62a17ae | 720 | /* Handle message */ |
721 | ospf_apiclient_msghandle(oclient, msg); | |
2d33f157 | 722 | |
d62a17ae | 723 | /* Don't forget to free this message */ |
724 | msg_free(msg); | |
2d33f157 | 725 | |
d62a17ae | 726 | return 0; |
2d33f157 | 727 | } |