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 | { | |
183451cf | 93 | int64_t count; |
84004dbf RS |
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) { | |
183451cf | 104 | int64_t total; |
84004dbf RS |
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; |
183451cf | 137 | int64_t count; |
84004dbf | 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 | 280 | } |
b990de23 RS |
281 | if (rpc->connect_cb != NULL) { |
282 | rpc->connect_cb(rpc, RPC_STATUS_ERROR, rpc->error_string, rpc->connect_data); | |
283 | } | |
84004dbf RS |
284 | return -1; |
285 | } | |
286 | if (revents & POLLHUP) { | |
84004dbf | 287 | rpc_set_error(rpc, "Socket failed with POLLHUP"); |
b990de23 RS |
288 | if (rpc->connect_cb != NULL) { |
289 | rpc->connect_cb(rpc, RPC_STATUS_ERROR, rpc->error_string, rpc->connect_data); | |
290 | } | |
1896d37b | 291 | return -1; |
84004dbf RS |
292 | } |
293 | ||
294 | if (rpc->is_connected == 0 && rpc->fd != -1 && revents&POLLOUT) { | |
912f7ad5 RS |
295 | int err = 0; |
296 | socklen_t err_size = sizeof(err); | |
297 | ||
298 | if (getsockopt(rpc->fd, SOL_SOCKET, SO_ERROR, | |
bb4e9ed6 | 299 | (char *)&err, &err_size) != 0 || err != 0) { |
912f7ad5 RS |
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); | |
b990de23 RS |
306 | if (rpc->connect_cb != NULL) { |
307 | rpc->connect_cb(rpc, RPC_STATUS_ERROR, | |
912f7ad5 | 308 | NULL, rpc->connect_data); |
b990de23 | 309 | } |
912f7ad5 RS |
310 | return -1; |
311 | } | |
312 | ||
84004dbf | 313 | rpc->is_connected = 1; |
b990de23 RS |
314 | if (rpc->connect_cb != NULL) { |
315 | rpc->connect_cb(rpc, RPC_STATUS_SUCCESS, NULL, rpc->connect_data); | |
316 | } | |
84004dbf RS |
317 | return 0; |
318 | } | |
319 | ||
b077fdeb RS |
320 | if (revents & POLLIN) { |
321 | if (rpc_read_from_socket(rpc) != 0) { | |
1744ef90 | 322 | rpc_reconnect_requeue(rpc); |
b077fdeb | 323 | return 0; |
84004dbf RS |
324 | } |
325 | } | |
326 | ||
b077fdeb RS |
327 | if (revents & POLLOUT && rpc->outqueue != NULL) { |
328 | if (rpc_write_to_socket(rpc) != 0) { | |
329 | rpc_set_error(rpc, "write to socket failed"); | |
1896d37b | 330 | return -1; |
84004dbf RS |
331 | } |
332 | } | |
333 | ||
334 | return 0; | |
335 | } | |
336 | ||
1744ef90 | 337 | void rpc_set_autoreconnect(struct rpc_context *rpc) |
84004dbf | 338 | { |
1744ef90 RS |
339 | rpc->auto_reconnect = 1; |
340 | } | |
84004dbf | 341 | |
1744ef90 RS |
342 | void rpc_unset_autoreconnect(struct rpc_context *rpc) |
343 | { | |
344 | rpc->auto_reconnect = 0; | |
345 | } | |
070287e5 | 346 | |
1744ef90 RS |
347 | static int rpc_connect_sockaddr_async(struct rpc_context *rpc, struct sockaddr_storage *s) |
348 | { | |
349 | int socksize; | |
84004dbf | 350 | |
1744ef90 | 351 | switch (s->ss_family) { |
84004dbf | 352 | case AF_INET: |
84004dbf | 353 | socksize = sizeof(struct sockaddr_in); |
6874f61e | 354 | rpc->fd = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP); |
84004dbf | 355 | break; |
1744ef90 RS |
356 | default: |
357 | rpc_set_error(rpc, "Can not handle AF_FAMILY:%d", s->ss_family); | |
358 | return -1; | |
84004dbf RS |
359 | } |
360 | ||
361 | if (rpc->fd == -1) { | |
362 | rpc_set_error(rpc, "Failed to open socket"); | |
1896d37b | 363 | return -1; |
84004dbf RS |
364 | } |
365 | ||
07fd0cbc RS |
366 | /* Some systems allow you to set capabilities on an executable |
367 | * to allow the file to be executed with privilege to bind to | |
368 | * privileged system ports, even if the user is not root. | |
369 | * | |
370 | * Opportunistically try to bind the socket to a low numbered | |
371 | * system port in the hope that the user is either root or the | |
372 | * executable has the CAP_NET_BIND_SERVICE. | |
373 | * | |
374 | * As soon as we fail the bind() with EACCES we know we will never | |
375 | * be able to bind to a system port so we terminate the loop. | |
376 | * | |
377 | * On linux, use | |
378 | * sudo setcap 'cap_net_bind_service=+ep' /path/executable | |
379 | * to make the executable able to bind to a system port. | |
ac559609 RI |
380 | * |
381 | * On Windows, there is no concept of privileged ports. Thus | |
382 | * binding will usually succeed. | |
07fd0cbc | 383 | */ |
ac559609 RI |
384 | { |
385 | struct sockaddr_in sin; | |
386 | static int portOfs = 0; | |
387 | const int firstPort = 512; /* >= 512 according to Sun docs */ | |
388 | const int portCount = IPPORT_RESERVED - firstPort; | |
389 | int startOfs = portOfs, port, rc; | |
390 | ||
391 | do { | |
392 | rc = -1; | |
393 | port = htons(firstPort + portOfs); | |
394 | portOfs = (portOfs + 1) % portCount; | |
395 | ||
396 | /* skip well-known ports */ | |
397 | if (!getservbyport(port, "tcp")) { | |
398 | memset(&sin, 0, sizeof(sin)); | |
399 | sin.sin_port = port; | |
400 | sin.sin_family = AF_INET; | |
401 | sin.sin_addr.s_addr = 0; | |
402 | ||
403 | rc = bind(rpc->fd, (struct sockaddr *)&sin, sizeof(struct sockaddr_in)); | |
404 | #if !defined(WIN32) | |
405 | /* we got EACCES, so don't try again */ | |
406 | if (rc != 0 && errno == EACCES) | |
407 | break; | |
408 | #endif | |
07fd0cbc | 409 | } |
ac559609 | 410 | } while (rc != 0 && portOfs != startOfs); |
07fd0cbc | 411 | } |
07fd0cbc | 412 | |
84004dbf | 413 | set_nonblocking(rpc->fd); |
07fd0cbc | 414 | |
f96b24fa RI |
415 | if (connect(rpc->fd, (struct sockaddr *)s, socksize) != 0 && errno != EINPROGRESS) { |
416 | rpc_set_error(rpc, "connect() to server failed. %s(%d)", strerror(errno), errno); | |
1896d37b | 417 | return -1; |
84004dbf RS |
418 | } |
419 | ||
420 | return 0; | |
421 | } | |
422 | ||
1744ef90 RS |
423 | int rpc_connect_async(struct rpc_context *rpc, const char *server, int port, rpc_cb cb, void *private_data) |
424 | { | |
425 | struct sockaddr_in *sin = (struct sockaddr_in *)&rpc->s; | |
426 | ||
427 | if (rpc->fd != -1) { | |
428 | rpc_set_error(rpc, "Trying to connect while already connected"); | |
429 | return -1; | |
430 | } | |
431 | ||
432 | if (rpc->is_udp != 0) { | |
433 | rpc_set_error(rpc, "Trying to connect on UDP socket"); | |
434 | return -1; | |
435 | } | |
436 | ||
437 | rpc->auto_reconnect = 0; | |
438 | ||
439 | sin->sin_family = AF_INET; | |
440 | sin->sin_port = htons(port); | |
441 | if (inet_pton(AF_INET, server, &sin->sin_addr) != 1) { | |
442 | rpc_set_error(rpc, "Not a valid server ip address"); | |
443 | return -1; | |
444 | } | |
445 | ||
446 | ||
447 | switch (rpc->s.ss_family) { | |
448 | case AF_INET: | |
449 | #ifdef HAVE_SOCKADDR_LEN | |
450 | sin->sin_len = sizeof(struct sockaddr_in); | |
451 | #endif | |
452 | break; | |
453 | } | |
454 | ||
455 | rpc->connect_cb = cb; | |
456 | rpc->connect_data = private_data; | |
457 | ||
458 | if (rpc_connect_sockaddr_async(rpc, &rpc->s) != 0) { | |
459 | return -1; | |
460 | } | |
461 | ||
462 | return 0; | |
463 | } | |
464 | ||
84004dbf RS |
465 | int rpc_disconnect(struct rpc_context *rpc, char *error) |
466 | { | |
1744ef90 RS |
467 | rpc_unset_autoreconnect(rpc); |
468 | ||
84004dbf | 469 | if (rpc->fd != -1) { |
6874f61e RS |
470 | #if defined(WIN32) |
471 | closesocket(rpc->fd); | |
472 | #else | |
84004dbf | 473 | close(rpc->fd); |
6874f61e | 474 | #endif |
84004dbf RS |
475 | } |
476 | rpc->fd = -1; | |
477 | ||
478 | rpc->is_connected = 0; | |
479 | ||
480 | rpc_error_all_pdus(rpc, error); | |
481 | ||
482 | return 0; | |
483 | } | |
485bc9b9 | 484 | |
1744ef90 RS |
485 | static void reconnect_cb(struct rpc_context *rpc, int status, void *data _U_, void *private_data) |
486 | { | |
487 | if (status != RPC_STATUS_SUCCESS) { | |
488 | rpc_error_all_pdus(rpc, "RPC ERROR: Failed to reconnect async"); | |
489 | return; | |
490 | } | |
491 | ||
492 | rpc->is_connected = 1; | |
b990de23 | 493 | rpc->connect_cb = NULL; |
1744ef90 RS |
494 | } |
495 | ||
496 | /* disconnect but do not error all PDUs, just move pdus in-flight back to the outqueue and reconnect */ | |
497 | static int rpc_reconnect_requeue(struct rpc_context *rpc) | |
b077fdeb RS |
498 | { |
499 | struct rpc_pdu *pdu; | |
500 | ||
501 | if (rpc->fd != -1) { | |
6874f61e RS |
502 | #if defined(WIN32) |
503 | closesocket(rpc->fd); | |
504 | #else | |
b077fdeb | 505 | close(rpc->fd); |
6874f61e | 506 | #endif |
b077fdeb RS |
507 | } |
508 | rpc->fd = -1; | |
509 | ||
510 | rpc->is_connected = 0; | |
511 | ||
512 | /* socket is closed so we will not get any replies to any commands | |
513 | * in flight. Move them all over from the waitpdu queue back to the out queue | |
514 | */ | |
515 | for (pdu=rpc->waitpdu; pdu; pdu=pdu->next) { | |
516 | SLIST_REMOVE(&rpc->waitpdu, pdu); | |
517 | SLIST_ADD(&rpc->outqueue, pdu); | |
1744ef90 RS |
518 | /* we have to re-send the whole pdu again */ |
519 | pdu->written = 0; | |
520 | } | |
521 | ||
522 | if (rpc->auto_reconnect != 0) { | |
523 | rpc->connect_cb = reconnect_cb; | |
524 | ||
525 | if (rpc_connect_sockaddr_async(rpc, &rpc->s) != 0) { | |
526 | rpc_error_all_pdus(rpc, "RPC ERROR: Failed to reconnect async"); | |
527 | return -1; | |
528 | } | |
b077fdeb RS |
529 | } |
530 | ||
531 | return 0; | |
532 | } | |
533 | ||
485bc9b9 RS |
534 | |
535 | int rpc_bind_udp(struct rpc_context *rpc, char *addr, int port) | |
536 | { | |
537 | struct addrinfo *ai = NULL; | |
538 | char service[6]; | |
539 | ||
540 | if (rpc->is_udp == 0) { | |
541 | rpc_set_error(rpc, "Cant not bind UDP. Not UDP context"); | |
542 | return -1; | |
543 | } | |
544 | ||
6874f61e | 545 | sprintf(service, "%d", port); |
485bc9b9 RS |
546 | if (getaddrinfo(addr, service, NULL, &ai) != 0) { |
547 | rpc_set_error(rpc, "Invalid address:%s. " | |
548 | "Can not resolv into IPv4/v6 structure."); | |
549 | return -1; | |
550 | } | |
551 | ||
552 | switch(ai->ai_family) { | |
553 | case AF_INET: | |
554 | rpc->fd = socket(ai->ai_family, SOCK_DGRAM, 0); | |
555 | if (rpc->fd == -1) { | |
556 | rpc_set_error(rpc, "Failed to create UDP socket: %s", strerror(errno)); | |
557 | freeaddrinfo(ai); | |
558 | return -1; | |
559 | } | |
560 | ||
561 | if (bind(rpc->fd, (struct sockaddr *)ai->ai_addr, sizeof(struct sockaddr_in)) != 0) { | |
562 | rpc_set_error(rpc, "Failed to bind to UDP socket: %s",strerror(errno)); | |
563 | freeaddrinfo(ai); | |
564 | return -1; | |
565 | } | |
566 | break; | |
567 | default: | |
568 | rpc_set_error(rpc, "Can not handle UPD sockets of family %d yet", ai->ai_family); | |
569 | freeaddrinfo(ai); | |
570 | return -1; | |
571 | } | |
572 | ||
573 | freeaddrinfo(ai); | |
574 | ||
575 | return 0; | |
576 | } | |
577 | ||
5bf60dc6 RS |
578 | int rpc_set_udp_destination(struct rpc_context *rpc, char *addr, int port, int is_broadcast) |
579 | { | |
580 | struct addrinfo *ai = NULL; | |
581 | char service[6]; | |
582 | ||
583 | if (rpc->is_udp == 0) { | |
584 | rpc_set_error(rpc, "Can not set destination sockaddr. Not UDP context"); | |
585 | return -1; | |
586 | } | |
587 | ||
6874f61e | 588 | sprintf(service, "%d", port); |
5bf60dc6 RS |
589 | if (getaddrinfo(addr, service, NULL, &ai) != 0) { |
590 | rpc_set_error(rpc, "Invalid address:%s. " | |
591 | "Can not resolv into IPv4/v6 structure."); | |
592 | return -1; | |
593 | } | |
594 | ||
595 | if (rpc->udp_dest) { | |
596 | free(rpc->udp_dest); | |
597 | rpc->udp_dest = NULL; | |
598 | } | |
599 | rpc->udp_dest = malloc(ai->ai_addrlen); | |
600 | if (rpc->udp_dest == NULL) { | |
601 | rpc_set_error(rpc, "Out of memory. Failed to allocate sockaddr structure"); | |
602 | return -1; | |
603 | } | |
604 | memcpy(rpc->udp_dest, ai->ai_addr, ai->ai_addrlen); | |
605 | freeaddrinfo(ai); | |
606 | ||
607 | rpc->is_broadcast = is_broadcast; | |
bb4e9ed6 | 608 | setsockopt(rpc->fd, SOL_SOCKET, SO_BROADCAST, (char *)&is_broadcast, sizeof(is_broadcast)); |
5bf60dc6 RS |
609 | |
610 | return 0; | |
611 | } | |
c481da67 RS |
612 | |
613 | struct sockaddr *rpc_get_recv_sockaddr(struct rpc_context *rpc) | |
614 | { | |
615 | return (struct sockaddr *)&rpc->udp_src; | |
616 | } | |
83aa785d RS |
617 | |
618 | int rpc_queue_length(struct rpc_context *rpc) | |
619 | { | |
620 | int i=0; | |
621 | struct rpc_pdu *pdu; | |
622 | ||
623 | for(pdu = rpc->outqueue; pdu; pdu = pdu->next) { | |
624 | i++; | |
625 | } | |
626 | for(pdu = rpc->waitpdu; pdu; pdu = pdu->next) { | |
627 | i++; | |
628 | } | |
629 | return i; | |
630 | } |