Commit | Line | Data |
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dabf4152 AM |
1 | /* |
2 | Copyright (C) 2010 by Ronnie Sahlberg <ronniesahlberg@gmail.com> | |
3 | ||
4 | This program is free software; you can redistribute it and/or modify | |
5 | it under the terms of the GNU Lesser General Public License as published by | |
6 | the Free Software Foundation; either version 2.1 of the License, or | |
7 | (at your option) any later version. | |
8 | ||
9 | This program is distributed in the hope that it will be useful, | |
10 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | GNU Lesser General Public License for more details. | |
13 | ||
14 | You should have received a copy of the GNU Lesser General Public License | |
15 | along with this program; if not, see <http://www.gnu.org/licenses/>. | |
16 | */ | |
5670ec6e AM |
17 | #ifdef WIN32 |
18 | #include "win32_compat.h" | |
19 | #else | |
20 | #include <unistd.h> | |
21 | #include <poll.h> | |
22 | #include <arpa/inet.h> | |
23 | #include <sys/ioctl.h> | |
24 | #include <sys/socket.h> | |
25 | #include <netdb.h> | |
26 | #endif/*WIN32*/ | |
dabf4152 AM |
27 | |
28 | #ifdef HAVE_CONFIG_H | |
29 | #include "config.h" | |
30 | #endif | |
31 | #include <stdio.h> | |
32 | #include <stdlib.h> | |
dabf4152 | 33 | #include <fcntl.h> |
dabf4152 AM |
34 | #include <string.h> |
35 | #include <errno.h> | |
36 | #include <rpc/rpc.h> | |
37 | #include <rpc/xdr.h> | |
dabf4152 AM |
38 | #ifdef HAVE_SYS_FILIO_H |
39 | #include <sys/filio.h> | |
40 | #endif | |
5670ec6e AM |
41 | #ifdef HAVE_SYS_SOCKIO_H |
42 | #include <sys/sockio.h> | |
43 | #endif | |
dabf4152 | 44 | #include <sys/types.h> |
dabf4152 AM |
45 | #include "libnfs.h" |
46 | #include "libnfs-raw.h" | |
47 | #include "libnfs-private.h" | |
48 | #include "slist.h" | |
49 | ||
5670ec6e AM |
50 | #ifdef WIN32 |
51 | //has to be included after stdlib!! | |
52 | #include "win32_errnowrapper.h" | |
53 | #endif | |
54 | ||
55 | ||
56 | static int rpc_reconnect_requeue(struct rpc_context *rpc); | |
57 | static int rpc_connect_sockaddr_async(struct rpc_context *rpc, struct sockaddr_storage *s); | |
58 | ||
dabf4152 AM |
59 | static void set_nonblocking(int fd) |
60 | { | |
5670ec6e AM |
61 | int v = 0; |
62 | #if defined(WIN32) | |
63 | long nonblocking=1; | |
64 | v = ioctlsocket(fd, FIONBIO,&nonblocking); | |
65 | #else | |
dabf4152 AM |
66 | v = fcntl(fd, F_GETFL, 0); |
67 | fcntl(fd, F_SETFL, v | O_NONBLOCK); | |
5670ec6e | 68 | #endif //FIXME |
dabf4152 AM |
69 | } |
70 | ||
71 | int rpc_get_fd(struct rpc_context *rpc) | |
72 | { | |
73 | return rpc->fd; | |
74 | } | |
75 | ||
76 | int rpc_which_events(struct rpc_context *rpc) | |
77 | { | |
78 | int events = rpc->is_connected ? POLLIN : POLLOUT; | |
79 | ||
80 | if (rpc->is_udp != 0) { | |
81 | /* for udp sockets we only wait for pollin */ | |
82 | return POLLIN; | |
83 | } | |
84 | ||
85 | if (rpc->outqueue) { | |
86 | events |= POLLOUT; | |
87 | } | |
88 | return events; | |
89 | } | |
90 | ||
91 | static int rpc_write_to_socket(struct rpc_context *rpc) | |
92 | { | |
5670ec6e | 93 | int64_t count; |
dabf4152 AM |
94 | |
95 | if (rpc == NULL) { | |
96 | return -1; | |
97 | } | |
98 | if (rpc->fd == -1) { | |
99 | rpc_set_error(rpc, "trying to write but not connected"); | |
100 | return -1; | |
101 | } | |
102 | ||
103 | while (rpc->outqueue != NULL) { | |
5670ec6e | 104 | int64_t total; |
dabf4152 AM |
105 | |
106 | total = rpc->outqueue->outdata.size; | |
107 | ||
5670ec6e AM |
108 | #if defined(WIN32) |
109 | count = send(rpc->fd, rpc->outqueue->outdata.data + rpc->outqueue->written, total - rpc->outqueue->written, 0); | |
110 | #else | |
dabf4152 | 111 | count = write(rpc->fd, rpc->outqueue->outdata.data + rpc->outqueue->written, total - rpc->outqueue->written); |
5670ec6e | 112 | #endif |
dabf4152 AM |
113 | if (count == -1) { |
114 | if (errno == EAGAIN || errno == EWOULDBLOCK) { | |
115 | return 0; | |
116 | } | |
117 | rpc_set_error(rpc, "Error when writing to socket :%s(%d)", strerror(errno), errno); | |
118 | return -1; | |
119 | } | |
120 | ||
121 | rpc->outqueue->written += count; | |
122 | if (rpc->outqueue->written == total) { | |
123 | struct rpc_pdu *pdu = rpc->outqueue; | |
124 | ||
125 | SLIST_REMOVE(&rpc->outqueue, pdu); | |
126 | SLIST_ADD_END(&rpc->waitpdu, pdu); | |
127 | } | |
128 | } | |
129 | return 0; | |
130 | } | |
131 | ||
132 | static int rpc_read_from_socket(struct rpc_context *rpc) | |
133 | { | |
134 | int available; | |
135 | int size; | |
136 | int pdu_size; | |
5670ec6e | 137 | int64_t count; |
dabf4152 | 138 | |
5670ec6e AM |
139 | #if defined(WIN32) |
140 | if (ioctlsocket(rpc->fd, FIONREAD, &available) != 0) { | |
141 | #else | |
dabf4152 | 142 | if (ioctl(rpc->fd, FIONREAD, &available) != 0) { |
5670ec6e | 143 | #endif |
dabf4152 AM |
144 | rpc_set_error(rpc, "Ioctl FIONREAD returned error : %d. Closing socket.", errno); |
145 | return -1; | |
146 | } | |
5670ec6e | 147 | |
dabf4152 AM |
148 | if (available == 0) { |
149 | rpc_set_error(rpc, "Socket has been closed"); | |
150 | return -1; | |
151 | } | |
152 | ||
153 | if (rpc->is_udp) { | |
154 | char *buf; | |
155 | socklen_t socklen = sizeof(rpc->udp_src); | |
156 | ||
157 | buf = malloc(available); | |
158 | if (buf == NULL) { | |
159 | rpc_set_error(rpc, "Failed to malloc buffer for recvfrom"); | |
160 | return -1; | |
161 | } | |
162 | count = recvfrom(rpc->fd, buf, available, MSG_DONTWAIT, (struct sockaddr *)&rpc->udp_src, &socklen); | |
163 | if (count < 0) { | |
164 | rpc_set_error(rpc, "Failed recvfrom: %s", strerror(errno)); | |
165 | free(buf); | |
166 | } | |
167 | if (rpc_process_pdu(rpc, buf, count) != 0) { | |
168 | rpc_set_error(rpc, "Invalid/garbage pdu received from server. Ignoring PDU"); | |
169 | free(buf); | |
170 | return -1; | |
171 | } | |
172 | free(buf); | |
173 | return 0; | |
174 | } | |
175 | ||
176 | /* read record marker, 4 bytes at the beginning of every pdu */ | |
177 | if (rpc->inbuf == NULL) { | |
178 | rpc->insize = 4; | |
179 | rpc->inbuf = malloc(rpc->insize); | |
180 | if (rpc->inbuf == NULL) { | |
181 | rpc_set_error(rpc, "Failed to allocate buffer for record marker, errno:%d. Closing socket.", errno); | |
182 | return -1; | |
183 | } | |
184 | } | |
185 | if (rpc->inpos < 4) { | |
186 | size = 4 - rpc->inpos; | |
187 | ||
5670ec6e AM |
188 | #if defined(WIN32) |
189 | count = recv(rpc->fd, rpc->inbuf + rpc->inpos, size, 0); | |
190 | #else | |
dabf4152 | 191 | count = read(rpc->fd, rpc->inbuf + rpc->inpos, size); |
5670ec6e | 192 | #endif |
dabf4152 AM |
193 | if (count == -1) { |
194 | if (errno == EINTR) { | |
195 | return 0; | |
196 | } | |
197 | rpc_set_error(rpc, "Read from socket failed, errno:%d. Closing socket.", errno); | |
198 | return -1; | |
199 | } | |
200 | available -= count; | |
201 | rpc->inpos += count; | |
202 | } | |
203 | ||
204 | if (available == 0) { | |
205 | return 0; | |
206 | } | |
207 | ||
208 | pdu_size = rpc_get_pdu_size(rpc->inbuf); | |
209 | if (rpc->insize < pdu_size) { | |
210 | unsigned char *buf; | |
211 | ||
212 | buf = malloc(pdu_size); | |
213 | if (buf == NULL) { | |
214 | rpc_set_error(rpc, "Failed to allocate buffer of %d bytes for pdu, errno:%d. Closing socket.", pdu_size, errno); | |
215 | return -1; | |
216 | } | |
217 | memcpy(buf, rpc->inbuf, rpc->insize); | |
218 | free(rpc->inbuf); | |
219 | rpc->inbuf = buf; | |
220 | rpc->insize = rpc_get_pdu_size(rpc->inbuf); | |
221 | } | |
222 | ||
223 | size = available; | |
224 | if (size > rpc->insize - rpc->inpos) { | |
225 | size = rpc->insize - rpc->inpos; | |
226 | } | |
227 | ||
5670ec6e AM |
228 | #if defined(WIN32) |
229 | count = recv(rpc->fd, rpc->inbuf + rpc->inpos, size, 0); | |
230 | #else | |
dabf4152 | 231 | count = read(rpc->fd, rpc->inbuf + rpc->inpos, size); |
5670ec6e | 232 | #endif |
dabf4152 AM |
233 | if (count == -1) { |
234 | if (errno == EINTR) { | |
235 | return 0; | |
236 | } | |
237 | rpc_set_error(rpc, "Read from socket failed, errno:%d. Closing socket.", errno); | |
238 | return -1; | |
239 | } | |
240 | available -= count; | |
241 | rpc->inpos += count; | |
242 | ||
243 | if (rpc->inpos == rpc->insize) { | |
244 | if (rpc_process_pdu(rpc, rpc->inbuf, pdu_size) != 0) { | |
245 | rpc_set_error(rpc, "Invalid/garbage pdu received from server. Closing socket"); | |
246 | return -1; | |
247 | } | |
248 | free(rpc->inbuf); | |
249 | rpc->inbuf = NULL; | |
250 | rpc->insize = 0; | |
251 | rpc->inpos = 0; | |
252 | } | |
253 | ||
254 | return 0; | |
255 | } | |
256 | ||
257 | ||
258 | ||
259 | int rpc_service(struct rpc_context *rpc, int revents) | |
260 | { | |
261 | if (revents & POLLERR) { | |
5670ec6e AM |
262 | #ifdef WIN32 |
263 | char err = 0; | |
264 | #else | |
dabf4152 | 265 | int err = 0; |
5670ec6e | 266 | #endif |
dabf4152 AM |
267 | socklen_t err_size = sizeof(err); |
268 | ||
269 | if (getsockopt(rpc->fd, SOL_SOCKET, SO_ERROR, | |
5670ec6e | 270 | (char *)&err, &err_size) != 0 || err != 0) { |
dabf4152 AM |
271 | if (err == 0) { |
272 | err = errno; | |
273 | } | |
274 | rpc_set_error(rpc, "rpc_service: socket error " | |
275 | "%s(%d).", | |
276 | strerror(err), err); | |
277 | } else { | |
278 | rpc_set_error(rpc, "rpc_service: POLLERR, " | |
279 | "Unknown socket error."); | |
280 | } | |
5670ec6e AM |
281 | if (rpc->connect_cb != NULL) { |
282 | rpc->connect_cb(rpc, RPC_STATUS_ERROR, rpc->error_string, rpc->connect_data); | |
283 | } | |
dabf4152 AM |
284 | return -1; |
285 | } | |
286 | if (revents & POLLHUP) { | |
287 | rpc_set_error(rpc, "Socket failed with POLLHUP"); | |
5670ec6e AM |
288 | if (rpc->connect_cb != NULL) { |
289 | rpc->connect_cb(rpc, RPC_STATUS_ERROR, rpc->error_string, rpc->connect_data); | |
290 | } | |
dabf4152 AM |
291 | return -1; |
292 | } | |
293 | ||
294 | if (rpc->is_connected == 0 && rpc->fd != -1 && revents&POLLOUT) { | |
295 | int err = 0; | |
296 | socklen_t err_size = sizeof(err); | |
297 | ||
298 | if (getsockopt(rpc->fd, SOL_SOCKET, SO_ERROR, | |
5670ec6e | 299 | (char *)&err, &err_size) != 0 || err != 0) { |
dabf4152 AM |
300 | if (err == 0) { |
301 | err = errno; | |
302 | } | |
303 | rpc_set_error(rpc, "rpc_service: socket error " | |
304 | "%s(%d) while connecting.", | |
305 | strerror(err), err); | |
5670ec6e AM |
306 | if (rpc->connect_cb != NULL) { |
307 | rpc->connect_cb(rpc, RPC_STATUS_ERROR, | |
dabf4152 | 308 | NULL, rpc->connect_data); |
5670ec6e | 309 | } |
dabf4152 AM |
310 | return -1; |
311 | } | |
312 | ||
313 | rpc->is_connected = 1; | |
5670ec6e AM |
314 | if (rpc->connect_cb != NULL) { |
315 | rpc->connect_cb(rpc, RPC_STATUS_SUCCESS, NULL, rpc->connect_data); | |
316 | } | |
dabf4152 AM |
317 | return 0; |
318 | } | |
319 | ||
5670ec6e AM |
320 | if (revents & POLLIN) { |
321 | if (rpc_read_from_socket(rpc) != 0) { | |
322 | rpc_reconnect_requeue(rpc); | |
323 | return 0; | |
324 | } | |
325 | } | |
326 | ||
dabf4152 AM |
327 | if (revents & POLLOUT && rpc->outqueue != NULL) { |
328 | if (rpc_write_to_socket(rpc) != 0) { | |
329 | rpc_set_error(rpc, "write to socket failed"); | |
330 | return -1; | |
331 | } | |
332 | } | |
333 | ||
5670ec6e AM |
334 | return 0; |
335 | } | |
336 | ||
337 | void rpc_set_autoreconnect(struct rpc_context *rpc) | |
338 | { | |
339 | rpc->auto_reconnect = 1; | |
340 | } | |
341 | ||
342 | void rpc_unset_autoreconnect(struct rpc_context *rpc) | |
343 | { | |
344 | rpc->auto_reconnect = 0; | |
345 | } | |
346 | ||
347 | static int rpc_connect_sockaddr_async(struct rpc_context *rpc, struct sockaddr_storage *s) | |
348 | { | |
349 | int socksize; | |
350 | ||
351 | switch (s->ss_family) { | |
352 | case AF_INET: | |
353 | socksize = sizeof(struct sockaddr_in); | |
354 | rpc->fd = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP); | |
355 | break; | |
356 | default: | |
357 | rpc_set_error(rpc, "Can not handle AF_FAMILY:%d", s->ss_family); | |
358 | return -1; | |
359 | } | |
360 | ||
361 | if (rpc->fd == -1) { | |
362 | rpc_set_error(rpc, "Failed to open socket"); | |
363 | return -1; | |
364 | } | |
365 | ||
366 | ||
367 | #if !defined(WIN32) | |
368 | /* Some systems allow you to set capabilities on an executable | |
369 | * to allow the file to be executed with privilege to bind to | |
370 | * privileged system ports, even if the user is not root. | |
371 | * | |
372 | * Opportunistically try to bind the socket to a low numbered | |
373 | * system port in the hope that the user is either root or the | |
374 | * executable has the CAP_NET_BIND_SERVICE. | |
375 | * | |
376 | * As soon as we fail the bind() with EACCES we know we will never | |
377 | * be able to bind to a system port so we terminate the loop. | |
378 | * | |
379 | * On linux, use | |
380 | * sudo setcap 'cap_net_bind_service=+ep' /path/executable | |
381 | * to make the executable able to bind to a system port. | |
382 | */ | |
383 | if (1) { | |
fab61e3d AM |
384 | static int port = 200; |
385 | int i; | |
5670ec6e AM |
386 | int one = 1; |
387 | ||
388 | setsockopt(rpc->fd, SOL_SOCKET, SO_REUSEADDR, (char *)&one, sizeof(one)); | |
389 | ||
fab61e3d | 390 | for (i = 0; i < 500; i++) { |
5670ec6e AM |
391 | struct sockaddr_in sin; |
392 | ||
fab61e3d AM |
393 | if(++port > 700) port = 200; |
394 | ||
5670ec6e AM |
395 | memset(&sin, 0, sizeof(sin)); |
396 | sin.sin_port = htons(port); | |
397 | sin.sin_family = AF_INET; | |
398 | sin.sin_addr.s_addr = 0; | |
399 | ||
400 | if (bind(rpc->fd, (struct sockaddr *)&sin, sizeof(struct sockaddr_in)) != 0 && errno != EACCES) { | |
401 | /* we didnt get EACCES, so try again */ | |
402 | continue; | |
403 | } | |
404 | break; | |
dabf4152 AM |
405 | } |
406 | } | |
5670ec6e | 407 | #endif |
dabf4152 | 408 | |
5670ec6e | 409 | set_nonblocking(rpc->fd); |
dabf4152 | 410 | |
5670ec6e AM |
411 | #if defined(WIN32) |
412 | if (connect(rpc->fd, (struct sockaddr *)s, socksize) == 0 && errno != EINPROGRESS ) | |
413 | #else | |
414 | if (connect(rpc->fd, (struct sockaddr *)s, socksize) != 0 && errno != EINPROGRESS) | |
415 | #endif | |
416 | { | |
fab61e3d | 417 | rpc_set_error(rpc, "connect() to server failed. %s(%d)", strerror(errno), errno); |
5670ec6e AM |
418 | return -1; |
419 | } | |
420 | ||
421 | return 0; | |
422 | } | |
dabf4152 AM |
423 | |
424 | int rpc_connect_async(struct rpc_context *rpc, const char *server, int port, rpc_cb cb, void *private_data) | |
425 | { | |
5670ec6e | 426 | struct sockaddr_in *sin = (struct sockaddr_in *)&rpc->s; |
dabf4152 AM |
427 | |
428 | if (rpc->fd != -1) { | |
429 | rpc_set_error(rpc, "Trying to connect while already connected"); | |
430 | return -1; | |
431 | } | |
432 | ||
433 | if (rpc->is_udp != 0) { | |
434 | rpc_set_error(rpc, "Trying to connect on UDP socket"); | |
435 | return -1; | |
436 | } | |
437 | ||
5670ec6e AM |
438 | rpc->auto_reconnect = 0; |
439 | ||
dabf4152 AM |
440 | sin->sin_family = AF_INET; |
441 | sin->sin_port = htons(port); | |
442 | if (inet_pton(AF_INET, server, &sin->sin_addr) != 1) { | |
443 | rpc_set_error(rpc, "Not a valid server ip address"); | |
444 | return -1; | |
445 | } | |
446 | ||
5670ec6e AM |
447 | |
448 | switch (rpc->s.ss_family) { | |
dabf4152 | 449 | case AF_INET: |
dabf4152 | 450 | #ifdef HAVE_SOCKADDR_LEN |
5670ec6e | 451 | sin->sin_len = sizeof(struct sockaddr_in); |
dabf4152 | 452 | #endif |
dabf4152 AM |
453 | break; |
454 | } | |
455 | ||
dabf4152 AM |
456 | rpc->connect_cb = cb; |
457 | rpc->connect_data = private_data; | |
458 | ||
5670ec6e | 459 | if (rpc_connect_sockaddr_async(rpc, &rpc->s) != 0) { |
dabf4152 | 460 | return -1; |
5670ec6e | 461 | } |
dabf4152 AM |
462 | |
463 | return 0; | |
464 | } | |
465 | ||
466 | int rpc_disconnect(struct rpc_context *rpc, char *error) | |
467 | { | |
5670ec6e AM |
468 | rpc_unset_autoreconnect(rpc); |
469 | ||
dabf4152 | 470 | if (rpc->fd != -1) { |
5670ec6e AM |
471 | #if defined(WIN32) |
472 | closesocket(rpc->fd); | |
473 | #else | |
dabf4152 | 474 | close(rpc->fd); |
5670ec6e | 475 | #endif |
dabf4152 AM |
476 | } |
477 | rpc->fd = -1; | |
478 | ||
479 | rpc->is_connected = 0; | |
480 | ||
481 | rpc_error_all_pdus(rpc, error); | |
482 | ||
483 | return 0; | |
484 | } | |
485 | ||
5670ec6e AM |
486 | static void reconnect_cb(struct rpc_context *rpc, int status, void *data _U_, void *private_data) |
487 | { | |
488 | if (status != RPC_STATUS_SUCCESS) { | |
489 | rpc_error_all_pdus(rpc, "RPC ERROR: Failed to reconnect async"); | |
490 | return; | |
491 | } | |
492 | ||
493 | rpc->is_connected = 1; | |
494 | rpc->connect_cb = NULL; | |
495 | } | |
496 | ||
497 | /* disconnect but do not error all PDUs, just move pdus in-flight back to the outqueue and reconnect */ | |
498 | static int rpc_reconnect_requeue(struct rpc_context *rpc) | |
499 | { | |
500 | struct rpc_pdu *pdu; | |
501 | ||
502 | if (rpc->fd != -1) { | |
503 | #if defined(WIN32) | |
504 | closesocket(rpc->fd); | |
505 | #else | |
506 | close(rpc->fd); | |
507 | #endif | |
508 | } | |
509 | rpc->fd = -1; | |
510 | ||
511 | rpc->is_connected = 0; | |
512 | ||
513 | /* socket is closed so we will not get any replies to any commands | |
514 | * in flight. Move them all over from the waitpdu queue back to the out queue | |
515 | */ | |
516 | for (pdu=rpc->waitpdu; pdu; pdu=pdu->next) { | |
517 | SLIST_REMOVE(&rpc->waitpdu, pdu); | |
518 | SLIST_ADD(&rpc->outqueue, pdu); | |
519 | /* we have to re-send the whole pdu again */ | |
520 | pdu->written = 0; | |
521 | } | |
522 | ||
523 | if (rpc->auto_reconnect != 0) { | |
524 | rpc->connect_cb = reconnect_cb; | |
525 | ||
526 | if (rpc_connect_sockaddr_async(rpc, &rpc->s) != 0) { | |
527 | rpc_error_all_pdus(rpc, "RPC ERROR: Failed to reconnect async"); | |
528 | return -1; | |
529 | } | |
530 | } | |
531 | ||
532 | return 0; | |
533 | } | |
534 | ||
dabf4152 AM |
535 | |
536 | int rpc_bind_udp(struct rpc_context *rpc, char *addr, int port) | |
537 | { | |
538 | struct addrinfo *ai = NULL; | |
539 | char service[6]; | |
540 | ||
541 | if (rpc->is_udp == 0) { | |
542 | rpc_set_error(rpc, "Cant not bind UDP. Not UDP context"); | |
543 | return -1; | |
544 | } | |
545 | ||
5670ec6e | 546 | sprintf(service, "%d", port); |
dabf4152 AM |
547 | if (getaddrinfo(addr, service, NULL, &ai) != 0) { |
548 | rpc_set_error(rpc, "Invalid address:%s. " | |
549 | "Can not resolv into IPv4/v6 structure."); | |
550 | return -1; | |
551 | } | |
552 | ||
553 | switch(ai->ai_family) { | |
554 | case AF_INET: | |
555 | rpc->fd = socket(ai->ai_family, SOCK_DGRAM, 0); | |
556 | if (rpc->fd == -1) { | |
557 | rpc_set_error(rpc, "Failed to create UDP socket: %s", strerror(errno)); | |
558 | freeaddrinfo(ai); | |
559 | return -1; | |
560 | } | |
561 | ||
562 | if (bind(rpc->fd, (struct sockaddr *)ai->ai_addr, sizeof(struct sockaddr_in)) != 0) { | |
563 | rpc_set_error(rpc, "Failed to bind to UDP socket: %s",strerror(errno)); | |
564 | freeaddrinfo(ai); | |
565 | return -1; | |
566 | } | |
567 | break; | |
568 | default: | |
569 | rpc_set_error(rpc, "Can not handle UPD sockets of family %d yet", ai->ai_family); | |
570 | freeaddrinfo(ai); | |
571 | return -1; | |
572 | } | |
573 | ||
574 | freeaddrinfo(ai); | |
575 | ||
576 | return 0; | |
577 | } | |
578 | ||
579 | int rpc_set_udp_destination(struct rpc_context *rpc, char *addr, int port, int is_broadcast) | |
580 | { | |
581 | struct addrinfo *ai = NULL; | |
582 | char service[6]; | |
583 | ||
584 | if (rpc->is_udp == 0) { | |
585 | rpc_set_error(rpc, "Can not set destination sockaddr. Not UDP context"); | |
586 | return -1; | |
587 | } | |
588 | ||
5670ec6e | 589 | sprintf(service, "%d", port); |
dabf4152 AM |
590 | if (getaddrinfo(addr, service, NULL, &ai) != 0) { |
591 | rpc_set_error(rpc, "Invalid address:%s. " | |
592 | "Can not resolv into IPv4/v6 structure."); | |
593 | return -1; | |
594 | } | |
595 | ||
596 | if (rpc->udp_dest) { | |
597 | free(rpc->udp_dest); | |
598 | rpc->udp_dest = NULL; | |
599 | } | |
600 | rpc->udp_dest = malloc(ai->ai_addrlen); | |
601 | if (rpc->udp_dest == NULL) { | |
602 | rpc_set_error(rpc, "Out of memory. Failed to allocate sockaddr structure"); | |
603 | return -1; | |
604 | } | |
605 | memcpy(rpc->udp_dest, ai->ai_addr, ai->ai_addrlen); | |
606 | freeaddrinfo(ai); | |
607 | ||
608 | rpc->is_broadcast = is_broadcast; | |
5670ec6e | 609 | setsockopt(rpc->fd, SOL_SOCKET, SO_BROADCAST, (char *)&is_broadcast, sizeof(is_broadcast)); |
dabf4152 AM |
610 | |
611 | return 0; | |
612 | } | |
613 | ||
614 | struct sockaddr *rpc_get_recv_sockaddr(struct rpc_context *rpc) | |
615 | { | |
616 | return (struct sockaddr *)&rpc->udp_src; | |
617 | } | |
5670ec6e AM |
618 | |
619 | int rpc_queue_length(struct rpc_context *rpc) | |
620 | { | |
621 | int i=0; | |
622 | struct rpc_pdu *pdu; | |
623 | ||
624 | for(pdu = rpc->outqueue; pdu; pdu = pdu->next) { | |
625 | i++; | |
626 | } | |
627 | for(pdu = rpc->waitpdu; pdu; pdu = pdu->next) { | |
628 | i++; | |
629 | } | |
630 | return i; | |
631 | } |