Commit | Line | Data |
---|---|---|
84004dbf RS |
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 | */ | |
a8a1b858 M |
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*/ | |
84004dbf | 27 | |
fc01d2a9 TN |
28 | #ifdef HAVE_CONFIG_H |
29 | #include "config.h" | |
30 | #endif | |
84004dbf | 31 | #include <stdio.h> |
98f5fee8 | 32 | #include <stdlib.h> |
84004dbf | 33 | #include <fcntl.h> |
84004dbf RS |
34 | #include <string.h> |
35 | #include <errno.h> | |
98f5fee8 | 36 | #include <rpc/rpc.h> |
84004dbf | 37 | #include <rpc/xdr.h> |
fc01d2a9 TN |
38 | #ifdef HAVE_SYS_FILIO_H |
39 | #include <sys/filio.h> | |
40 | #endif | |
647d2ea1 RS |
41 | #ifdef HAVE_SYS_SOCKIO_H |
42 | #include <sys/sockio.h> | |
43 | #endif | |
485bc9b9 | 44 | #include <sys/types.h> |
84004dbf RS |
45 | #include "libnfs.h" |
46 | #include "libnfs-raw.h" | |
47 | #include "libnfs-private.h" | |
48 | #include "slist.h" | |
49 | ||
fcc42bfe M |
50 | #ifdef WIN32 |
51 | //has to be included after stdlib!! | |
52 | #include "win32_errnowrapper.h" | |
53 | #endif | |
54 | ||
55 | ||
1744ef90 RS |
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); | |
b077fdeb | 58 | |
84004dbf RS |
59 | static void set_nonblocking(int fd) |
60 | { | |
99c14c9b | 61 | int v = 0; |
6874f61e | 62 | #if defined(WIN32) |
99c14c9b | 63 | long nonblocking=1; |
64 | v = ioctlsocket(fd, FIONBIO,&nonblocking); | |
6874f61e | 65 | #else |
84004dbf RS |
66 | v = fcntl(fd, F_GETFL, 0); |
67 | fcntl(fd, F_SETFL, v | O_NONBLOCK); | |
a8a1b858 | 68 | #endif //FIXME |
84004dbf RS |
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 | { | |
912f7ad5 | 78 | int events = rpc->is_connected ? POLLIN : POLLOUT; |
84004dbf | 79 | |
5911f3e8 RS |
80 | if (rpc->is_udp != 0) { |
81 | /* for udp sockets we only wait for pollin */ | |
82 | return POLLIN; | |
83 | } | |
84 | ||
84004dbf RS |
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 | { | |
93 | ssize_t count; | |
94 | ||
95 | if (rpc == NULL) { | |
84004dbf RS |
96 | return -1; |
97 | } | |
98 | if (rpc->fd == -1) { | |
1896d37b RS |
99 | rpc_set_error(rpc, "trying to write but not connected"); |
100 | return -1; | |
84004dbf RS |
101 | } |
102 | ||
103 | while (rpc->outqueue != NULL) { | |
104 | ssize_t total; | |
105 | ||
106 | total = rpc->outqueue->outdata.size; | |
107 | ||
6874f61e RS |
108 | #if defined(WIN32) |
109 | count = send(rpc->fd, rpc->outqueue->outdata.data + rpc->outqueue->written, total - rpc->outqueue->written, 0); | |
110 | #else | |
84004dbf | 111 | count = write(rpc->fd, rpc->outqueue->outdata.data + rpc->outqueue->written, total - rpc->outqueue->written); |
6874f61e | 112 | #endif |
84004dbf RS |
113 | if (count == -1) { |
114 | if (errno == EAGAIN || errno == EWOULDBLOCK) { | |
84004dbf RS |
115 | return 0; |
116 | } | |
1896d37b RS |
117 | rpc_set_error(rpc, "Error when writing to socket :%s(%d)", strerror(errno), errno); |
118 | return -1; | |
84004dbf RS |
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; | |
cdb19ec1 | 136 | int pdu_size; |
84004dbf RS |
137 | ssize_t count; |
138 | ||
6874f61e RS |
139 | #if defined(WIN32) |
140 | if (ioctlsocket(rpc->fd, FIONREAD, &available) != 0) { | |
141 | #else | |
84004dbf | 142 | if (ioctl(rpc->fd, FIONREAD, &available) != 0) { |
6874f61e | 143 | #endif |
84004dbf RS |
144 | rpc_set_error(rpc, "Ioctl FIONREAD returned error : %d. Closing socket.", errno); |
145 | return -1; | |
146 | } | |
a8a1b858 | 147 | |
84004dbf RS |
148 | if (available == 0) { |
149 | rpc_set_error(rpc, "Socket has been closed"); | |
1896d37b | 150 | return -1; |
84004dbf | 151 | } |
cdb19ec1 | 152 | |
0268794f RS |
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 | ||
cdb19ec1 RS |
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 | ||
6874f61e RS |
188 | #if defined(WIN32) |
189 | count = recv(rpc->fd, rpc->inbuf + rpc->inpos, size, 0); | |
190 | #else | |
cdb19ec1 | 191 | count = read(rpc->fd, rpc->inbuf + rpc->inpos, size); |
6874f61e | 192 | #endif |
cdb19ec1 RS |
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); | |
84004dbf | 221 | } |
cdb19ec1 RS |
222 | |
223 | size = available; | |
224 | if (size > rpc->insize - rpc->inpos) { | |
225 | size = rpc->insize - rpc->inpos; | |
84004dbf RS |
226 | } |
227 | ||
6874f61e RS |
228 | #if defined(WIN32) |
229 | count = recv(rpc->fd, rpc->inbuf + rpc->inpos, size, 0); | |
230 | #else | |
cdb19ec1 | 231 | count = read(rpc->fd, rpc->inbuf + rpc->inpos, size); |
6874f61e | 232 | #endif |
84004dbf RS |
233 | if (count == -1) { |
234 | if (errno == EINTR) { | |
84004dbf RS |
235 | return 0; |
236 | } | |
237 | rpc_set_error(rpc, "Read from socket failed, errno:%d. Closing socket.", errno); | |
1896d37b | 238 | return -1; |
84004dbf | 239 | } |
cdb19ec1 RS |
240 | available -= count; |
241 | rpc->inpos += count; | |
84004dbf | 242 | |
cdb19ec1 RS |
243 | if (rpc->inpos == rpc->insize) { |
244 | if (rpc_process_pdu(rpc, rpc->inbuf, pdu_size) != 0) { | |
84004dbf | 245 | rpc_set_error(rpc, "Invalid/garbage pdu received from server. Closing socket"); |
1896d37b | 246 | return -1; |
84004dbf | 247 | } |
cdb19ec1 RS |
248 | free(rpc->inbuf); |
249 | rpc->inbuf = NULL; | |
250 | rpc->insize = 0; | |
251 | rpc->inpos = 0; | |
84004dbf | 252 | } |
cdb19ec1 | 253 | |
84004dbf RS |
254 | return 0; |
255 | } | |
256 | ||
257 | ||
258 | ||
259 | int rpc_service(struct rpc_context *rpc, int revents) | |
260 | { | |
261 | if (revents & POLLERR) { | |
fcc42bfe | 262 | #ifdef WIN32 |
a8a1b858 | 263 | char err = 0; |
fcc42bfe M |
264 | #else |
265 | int err = 0; | |
266 | #endif | |
912f7ad5 RS |
267 | socklen_t err_size = sizeof(err); |
268 | ||
269 | if (getsockopt(rpc->fd, SOL_SOCKET, SO_ERROR, | |
bb4e9ed6 | 270 | (char *)&err, &err_size) != 0 || err != 0) { |
912f7ad5 RS |
271 | if (err == 0) { |
272 | err = errno; | |
273 | } | |
274 | rpc_set_error(rpc, "rpc_service: socket error " | |
275 | "%s(%d).", | |
276 | strerror(err), err); | |
84004dbf | 277 | } else { |
912f7ad5 RS |
278 | rpc_set_error(rpc, "rpc_service: POLLERR, " |
279 | "Unknown socket error."); | |
84004dbf RS |
280 | } |
281 | rpc->connect_cb(rpc, RPC_STATUS_ERROR, rpc->error_string, rpc->connect_data); | |
282 | return -1; | |
283 | } | |
284 | if (revents & POLLHUP) { | |
84004dbf RS |
285 | rpc_set_error(rpc, "Socket failed with POLLHUP"); |
286 | rpc->connect_cb(rpc, RPC_STATUS_ERROR, rpc->error_string, rpc->connect_data); | |
1896d37b | 287 | return -1; |
84004dbf RS |
288 | } |
289 | ||
290 | if (rpc->is_connected == 0 && rpc->fd != -1 && revents&POLLOUT) { | |
912f7ad5 RS |
291 | int err = 0; |
292 | socklen_t err_size = sizeof(err); | |
293 | ||
294 | if (getsockopt(rpc->fd, SOL_SOCKET, SO_ERROR, | |
bb4e9ed6 | 295 | (char *)&err, &err_size) != 0 || err != 0) { |
912f7ad5 RS |
296 | if (err == 0) { |
297 | err = errno; | |
298 | } | |
299 | rpc_set_error(rpc, "rpc_service: socket error " | |
300 | "%s(%d) while connecting.", | |
301 | strerror(err), err); | |
302 | rpc->connect_cb(rpc, RPC_STATUS_ERROR, | |
303 | NULL, rpc->connect_data); | |
304 | return -1; | |
305 | } | |
306 | ||
84004dbf RS |
307 | rpc->is_connected = 1; |
308 | rpc->connect_cb(rpc, RPC_STATUS_SUCCESS, NULL, rpc->connect_data); | |
309 | return 0; | |
310 | } | |
311 | ||
b077fdeb RS |
312 | if (revents & POLLIN) { |
313 | if (rpc_read_from_socket(rpc) != 0) { | |
1744ef90 | 314 | rpc_reconnect_requeue(rpc); |
b077fdeb | 315 | return 0; |
84004dbf RS |
316 | } |
317 | } | |
318 | ||
b077fdeb RS |
319 | if (revents & POLLOUT && rpc->outqueue != NULL) { |
320 | if (rpc_write_to_socket(rpc) != 0) { | |
321 | rpc_set_error(rpc, "write to socket failed"); | |
1896d37b | 322 | return -1; |
84004dbf RS |
323 | } |
324 | } | |
325 | ||
326 | return 0; | |
327 | } | |
328 | ||
1744ef90 | 329 | void rpc_set_autoreconnect(struct rpc_context *rpc) |
84004dbf | 330 | { |
1744ef90 RS |
331 | rpc->auto_reconnect = 1; |
332 | } | |
84004dbf | 333 | |
1744ef90 RS |
334 | void rpc_unset_autoreconnect(struct rpc_context *rpc) |
335 | { | |
336 | rpc->auto_reconnect = 0; | |
337 | } | |
070287e5 | 338 | |
1744ef90 RS |
339 | static int rpc_connect_sockaddr_async(struct rpc_context *rpc, struct sockaddr_storage *s) |
340 | { | |
341 | int socksize; | |
84004dbf | 342 | |
1744ef90 | 343 | switch (s->ss_family) { |
84004dbf | 344 | case AF_INET: |
84004dbf | 345 | socksize = sizeof(struct sockaddr_in); |
6874f61e | 346 | rpc->fd = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP); |
84004dbf | 347 | break; |
1744ef90 RS |
348 | default: |
349 | rpc_set_error(rpc, "Can not handle AF_FAMILY:%d", s->ss_family); | |
350 | return -1; | |
84004dbf RS |
351 | } |
352 | ||
353 | if (rpc->fd == -1) { | |
354 | rpc_set_error(rpc, "Failed to open socket"); | |
1896d37b | 355 | return -1; |
84004dbf RS |
356 | } |
357 | ||
07fd0cbc RS |
358 | |
359 | #if !defined(WIN32) | |
360 | /* Some systems allow you to set capabilities on an executable | |
361 | * to allow the file to be executed with privilege to bind to | |
362 | * privileged system ports, even if the user is not root. | |
363 | * | |
364 | * Opportunistically try to bind the socket to a low numbered | |
365 | * system port in the hope that the user is either root or the | |
366 | * executable has the CAP_NET_BIND_SERVICE. | |
367 | * | |
368 | * As soon as we fail the bind() with EACCES we know we will never | |
369 | * be able to bind to a system port so we terminate the loop. | |
370 | * | |
371 | * On linux, use | |
372 | * sudo setcap 'cap_net_bind_service=+ep' /path/executable | |
373 | * to make the executable able to bind to a system port. | |
374 | */ | |
375 | if (1) { | |
376 | int port; | |
377 | int one = 1; | |
378 | ||
379 | setsockopt(rpc->fd, SOL_SOCKET, SO_REUSEADDR, (char *)&one, sizeof(one)); | |
380 | ||
381 | for (port = 200; port < 500; port++) { | |
382 | struct sockaddr_in sin; | |
383 | ||
07fd0cbc RS |
384 | memset(&sin, 0, sizeof(sin)); |
385 | sin.sin_port = htons(port); | |
386 | sin.sin_family = AF_INET; | |
387 | sin.sin_addr.s_addr = 0; | |
388 | ||
389 | if (bind(rpc->fd, (struct sockaddr *)&sin, sizeof(struct sockaddr_in)) != 0 && errno != EACCES) { | |
390 | /* we didnt get EACCES, so try again */ | |
391 | continue; | |
392 | } | |
393 | break; | |
394 | } | |
395 | } | |
396 | #endif | |
397 | ||
84004dbf | 398 | set_nonblocking(rpc->fd); |
07fd0cbc | 399 | |
4b0e8df9 | 400 | #if defined(WIN32) |
1744ef90 | 401 | if (connect(rpc->fd, (struct sockaddr *)s, socksize) == 0 && errno != EINPROGRESS ) |
4b0e8df9 | 402 | #else |
1744ef90 | 403 | if (connect(rpc->fd, (struct sockaddr *)s, socksize) != 0 && errno != EINPROGRESS) |
4b0e8df9 | 404 | #endif |
405 | { | |
84004dbf | 406 | rpc_set_error(rpc, "connect() to server failed"); |
1896d37b | 407 | return -1; |
84004dbf RS |
408 | } |
409 | ||
410 | return 0; | |
411 | } | |
412 | ||
1744ef90 RS |
413 | int rpc_connect_async(struct rpc_context *rpc, const char *server, int port, rpc_cb cb, void *private_data) |
414 | { | |
415 | struct sockaddr_in *sin = (struct sockaddr_in *)&rpc->s; | |
416 | ||
417 | if (rpc->fd != -1) { | |
418 | rpc_set_error(rpc, "Trying to connect while already connected"); | |
419 | return -1; | |
420 | } | |
421 | ||
422 | if (rpc->is_udp != 0) { | |
423 | rpc_set_error(rpc, "Trying to connect on UDP socket"); | |
424 | return -1; | |
425 | } | |
426 | ||
427 | rpc->auto_reconnect = 0; | |
428 | ||
429 | sin->sin_family = AF_INET; | |
430 | sin->sin_port = htons(port); | |
431 | if (inet_pton(AF_INET, server, &sin->sin_addr) != 1) { | |
432 | rpc_set_error(rpc, "Not a valid server ip address"); | |
433 | return -1; | |
434 | } | |
435 | ||
436 | ||
437 | switch (rpc->s.ss_family) { | |
438 | case AF_INET: | |
439 | #ifdef HAVE_SOCKADDR_LEN | |
440 | sin->sin_len = sizeof(struct sockaddr_in); | |
441 | #endif | |
442 | break; | |
443 | } | |
444 | ||
445 | rpc->connect_cb = cb; | |
446 | rpc->connect_data = private_data; | |
447 | ||
448 | if (rpc_connect_sockaddr_async(rpc, &rpc->s) != 0) { | |
449 | return -1; | |
450 | } | |
451 | ||
452 | return 0; | |
453 | } | |
454 | ||
84004dbf RS |
455 | int rpc_disconnect(struct rpc_context *rpc, char *error) |
456 | { | |
1744ef90 RS |
457 | rpc_unset_autoreconnect(rpc); |
458 | ||
84004dbf | 459 | if (rpc->fd != -1) { |
6874f61e RS |
460 | #if defined(WIN32) |
461 | closesocket(rpc->fd); | |
462 | #else | |
84004dbf | 463 | close(rpc->fd); |
6874f61e | 464 | #endif |
84004dbf RS |
465 | } |
466 | rpc->fd = -1; | |
467 | ||
468 | rpc->is_connected = 0; | |
469 | ||
470 | rpc_error_all_pdus(rpc, error); | |
471 | ||
472 | return 0; | |
473 | } | |
485bc9b9 | 474 | |
1744ef90 RS |
475 | static void reconnect_cb(struct rpc_context *rpc, int status, void *data _U_, void *private_data) |
476 | { | |
477 | if (status != RPC_STATUS_SUCCESS) { | |
478 | rpc_error_all_pdus(rpc, "RPC ERROR: Failed to reconnect async"); | |
479 | return; | |
480 | } | |
481 | ||
482 | rpc->is_connected = 1; | |
483 | } | |
484 | ||
485 | /* disconnect but do not error all PDUs, just move pdus in-flight back to the outqueue and reconnect */ | |
486 | static int rpc_reconnect_requeue(struct rpc_context *rpc) | |
b077fdeb RS |
487 | { |
488 | struct rpc_pdu *pdu; | |
489 | ||
490 | if (rpc->fd != -1) { | |
6874f61e RS |
491 | #if defined(WIN32) |
492 | closesocket(rpc->fd); | |
493 | #else | |
b077fdeb | 494 | close(rpc->fd); |
6874f61e | 495 | #endif |
b077fdeb RS |
496 | } |
497 | rpc->fd = -1; | |
498 | ||
499 | rpc->is_connected = 0; | |
500 | ||
501 | /* socket is closed so we will not get any replies to any commands | |
502 | * in flight. Move them all over from the waitpdu queue back to the out queue | |
503 | */ | |
504 | for (pdu=rpc->waitpdu; pdu; pdu=pdu->next) { | |
505 | SLIST_REMOVE(&rpc->waitpdu, pdu); | |
506 | SLIST_ADD(&rpc->outqueue, pdu); | |
1744ef90 RS |
507 | /* we have to re-send the whole pdu again */ |
508 | pdu->written = 0; | |
509 | } | |
510 | ||
511 | if (rpc->auto_reconnect != 0) { | |
512 | rpc->connect_cb = reconnect_cb; | |
513 | ||
514 | if (rpc_connect_sockaddr_async(rpc, &rpc->s) != 0) { | |
515 | rpc_error_all_pdus(rpc, "RPC ERROR: Failed to reconnect async"); | |
516 | return -1; | |
517 | } | |
b077fdeb RS |
518 | } |
519 | ||
520 | return 0; | |
521 | } | |
522 | ||
485bc9b9 RS |
523 | |
524 | int rpc_bind_udp(struct rpc_context *rpc, char *addr, int port) | |
525 | { | |
526 | struct addrinfo *ai = NULL; | |
527 | char service[6]; | |
528 | ||
529 | if (rpc->is_udp == 0) { | |
530 | rpc_set_error(rpc, "Cant not bind UDP. Not UDP context"); | |
531 | return -1; | |
532 | } | |
533 | ||
6874f61e | 534 | sprintf(service, "%d", port); |
485bc9b9 RS |
535 | if (getaddrinfo(addr, service, NULL, &ai) != 0) { |
536 | rpc_set_error(rpc, "Invalid address:%s. " | |
537 | "Can not resolv into IPv4/v6 structure."); | |
538 | return -1; | |
539 | } | |
540 | ||
541 | switch(ai->ai_family) { | |
542 | case AF_INET: | |
543 | rpc->fd = socket(ai->ai_family, SOCK_DGRAM, 0); | |
544 | if (rpc->fd == -1) { | |
545 | rpc_set_error(rpc, "Failed to create UDP socket: %s", strerror(errno)); | |
546 | freeaddrinfo(ai); | |
547 | return -1; | |
548 | } | |
549 | ||
550 | if (bind(rpc->fd, (struct sockaddr *)ai->ai_addr, sizeof(struct sockaddr_in)) != 0) { | |
551 | rpc_set_error(rpc, "Failed to bind to UDP socket: %s",strerror(errno)); | |
552 | freeaddrinfo(ai); | |
553 | return -1; | |
554 | } | |
555 | break; | |
556 | default: | |
557 | rpc_set_error(rpc, "Can not handle UPD sockets of family %d yet", ai->ai_family); | |
558 | freeaddrinfo(ai); | |
559 | return -1; | |
560 | } | |
561 | ||
562 | freeaddrinfo(ai); | |
563 | ||
564 | return 0; | |
565 | } | |
566 | ||
5bf60dc6 RS |
567 | int rpc_set_udp_destination(struct rpc_context *rpc, char *addr, int port, int is_broadcast) |
568 | { | |
569 | struct addrinfo *ai = NULL; | |
570 | char service[6]; | |
571 | ||
572 | if (rpc->is_udp == 0) { | |
573 | rpc_set_error(rpc, "Can not set destination sockaddr. Not UDP context"); | |
574 | return -1; | |
575 | } | |
576 | ||
6874f61e | 577 | sprintf(service, "%d", port); |
5bf60dc6 RS |
578 | if (getaddrinfo(addr, service, NULL, &ai) != 0) { |
579 | rpc_set_error(rpc, "Invalid address:%s. " | |
580 | "Can not resolv into IPv4/v6 structure."); | |
581 | return -1; | |
582 | } | |
583 | ||
584 | if (rpc->udp_dest) { | |
585 | free(rpc->udp_dest); | |
586 | rpc->udp_dest = NULL; | |
587 | } | |
588 | rpc->udp_dest = malloc(ai->ai_addrlen); | |
589 | if (rpc->udp_dest == NULL) { | |
590 | rpc_set_error(rpc, "Out of memory. Failed to allocate sockaddr structure"); | |
591 | return -1; | |
592 | } | |
593 | memcpy(rpc->udp_dest, ai->ai_addr, ai->ai_addrlen); | |
594 | freeaddrinfo(ai); | |
595 | ||
596 | rpc->is_broadcast = is_broadcast; | |
bb4e9ed6 | 597 | setsockopt(rpc->fd, SOL_SOCKET, SO_BROADCAST, (char *)&is_broadcast, sizeof(is_broadcast)); |
5bf60dc6 RS |
598 | |
599 | return 0; | |
600 | } | |
c481da67 RS |
601 | |
602 | struct sockaddr *rpc_get_recv_sockaddr(struct rpc_context *rpc) | |
603 | { | |
604 | return (struct sockaddr *)&rpc->udp_src; | |
605 | } | |
83aa785d RS |
606 | |
607 | int rpc_queue_length(struct rpc_context *rpc) | |
608 | { | |
609 | int i=0; | |
610 | struct rpc_pdu *pdu; | |
611 | ||
612 | for(pdu = rpc->outqueue; pdu; pdu = pdu->next) { | |
613 | i++; | |
614 | } | |
615 | for(pdu = rpc->waitpdu; pdu; pdu = pdu->next) { | |
616 | i++; | |
617 | } | |
618 | return i; | |
619 | } |