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 | */ | |
00748f36 RS |
17 | #ifdef HAVE_CONFIG_H |
18 | #include "config.h" | |
19 | #endif | |
20 | ||
21 | #ifdef AROS | |
22 | #include "aros_compat.h" | |
23 | #endif | |
24 | ||
a8a1b858 M |
25 | #ifdef WIN32 |
26 | #include "win32_compat.h" | |
c022471e RS |
27 | #endif |
28 | ||
29 | #ifdef HAVE_ARPA_INET_H | |
a8a1b858 | 30 | #include <arpa/inet.h> |
c022471e | 31 | #endif |
84004dbf | 32 | |
00748f36 RS |
33 | #ifdef HAVE_POLL_H |
34 | #include <poll.h> | |
fc01d2a9 | 35 | #endif |
d7c6e9aa | 36 | |
00748f36 RS |
37 | #ifdef HAVE_UNISTD_H |
38 | #include <unistd.h> | |
d7c6e9aa RS |
39 | #endif |
40 | ||
00748f36 RS |
41 | #ifdef HAVE_SYS_IOCTL_H |
42 | #include <sys/ioctl.h> | |
d7c6e9aa RS |
43 | #endif |
44 | ||
7057e733 RS |
45 | #ifdef HAVE_SYS_SOCKET_H |
46 | #include <sys/socket.h> | |
47 | #endif | |
48 | ||
1c8b4547 PL |
49 | #ifdef HAVE_NETINET_TCP_H |
50 | #include <netinet/tcp.h> | |
51 | #endif | |
52 | ||
bff8fe46 RS |
53 | #ifdef HAVE_NETDB_H |
54 | #include <netdb.h> | |
55 | #endif | |
56 | ||
fc01d2a9 TN |
57 | #ifdef HAVE_SYS_FILIO_H |
58 | #include <sys/filio.h> | |
59 | #endif | |
bff8fe46 | 60 | |
647d2ea1 RS |
61 | #ifdef HAVE_SYS_SOCKIO_H |
62 | #include <sys/sockio.h> | |
63 | #endif | |
bff8fe46 RS |
64 | |
65 | #include <stdio.h> | |
66 | #include <stdlib.h> | |
67 | #include <assert.h> | |
68 | #include <fcntl.h> | |
69 | #include <string.h> | |
70 | #include <errno.h> | |
485bc9b9 | 71 | #include <sys/types.h> |
763cd6e3 | 72 | #include "libnfs-zdr.h" |
84004dbf RS |
73 | #include "libnfs.h" |
74 | #include "libnfs-raw.h" | |
75 | #include "libnfs-private.h" | |
76 | #include "slist.h" | |
77 | ||
fcc42bfe M |
78 | #ifdef WIN32 |
79 | //has to be included after stdlib!! | |
80 | #include "win32_errnowrapper.h" | |
81 | #endif | |
82 | ||
83 | ||
1744ef90 RS |
84 | static int rpc_reconnect_requeue(struct rpc_context *rpc); |
85 | static int rpc_connect_sockaddr_async(struct rpc_context *rpc, struct sockaddr_storage *s); | |
b077fdeb | 86 | |
84004dbf RS |
87 | static void set_nonblocking(int fd) |
88 | { | |
99c14c9b | 89 | int v = 0; |
6874f61e | 90 | #if defined(WIN32) |
99c14c9b | 91 | long nonblocking=1; |
622489d3 | 92 | v = ioctl(fd, FIONBIO, &nonblocking); |
6874f61e | 93 | #else |
84004dbf RS |
94 | v = fcntl(fd, F_GETFL, 0); |
95 | fcntl(fd, F_SETFL, v | O_NONBLOCK); | |
a8a1b858 | 96 | #endif //FIXME |
84004dbf RS |
97 | } |
98 | ||
1c8b4547 PL |
99 | #ifdef HAVE_NETINET_TCP_H |
100 | int set_tcp_sockopt(int sockfd, int optname, int value) | |
101 | { | |
102 | int level; | |
103 | ||
104 | #if defined(__FreeBSD__) || defined(__sun) || (defined(__APPLE__) && defined(__MACH__)) | |
105 | struct protoent *buf; | |
106 | ||
107 | if ((buf = getprotobyname("tcp")) != NULL) | |
108 | level = buf->p_proto; | |
109 | else | |
110 | return -1; | |
111 | #else | |
112 | level = SOL_TCP; | |
113 | #endif | |
114 | ||
115 | return setsockopt(sockfd, level, optname, (char *)&value, sizeof(value)); | |
116 | } | |
117 | #endif | |
118 | ||
84004dbf RS |
119 | int rpc_get_fd(struct rpc_context *rpc) |
120 | { | |
4a2b0876 RS |
121 | assert(rpc->magic == RPC_CONTEXT_MAGIC); |
122 | ||
84004dbf RS |
123 | return rpc->fd; |
124 | } | |
125 | ||
126 | int rpc_which_events(struct rpc_context *rpc) | |
127 | { | |
4a2b0876 RS |
128 | int events; |
129 | ||
130 | assert(rpc->magic == RPC_CONTEXT_MAGIC); | |
131 | ||
132 | events = rpc->is_connected ? POLLIN : POLLOUT; | |
84004dbf | 133 | |
5911f3e8 RS |
134 | if (rpc->is_udp != 0) { |
135 | /* for udp sockets we only wait for pollin */ | |
136 | return POLLIN; | |
137 | } | |
138 | ||
84004dbf RS |
139 | if (rpc->outqueue) { |
140 | events |= POLLOUT; | |
141 | } | |
142 | return events; | |
143 | } | |
144 | ||
145 | static int rpc_write_to_socket(struct rpc_context *rpc) | |
146 | { | |
d14e2838 | 147 | int32_t count; |
84004dbf | 148 | |
4a2b0876 RS |
149 | assert(rpc->magic == RPC_CONTEXT_MAGIC); |
150 | ||
84004dbf | 151 | if (rpc->fd == -1) { |
1896d37b RS |
152 | rpc_set_error(rpc, "trying to write but not connected"); |
153 | return -1; | |
84004dbf RS |
154 | } |
155 | ||
156 | while (rpc->outqueue != NULL) { | |
183451cf | 157 | int64_t total; |
84004dbf RS |
158 | |
159 | total = rpc->outqueue->outdata.size; | |
160 | ||
6874f61e | 161 | count = send(rpc->fd, rpc->outqueue->outdata.data + rpc->outqueue->written, total - rpc->outqueue->written, 0); |
84004dbf RS |
162 | if (count == -1) { |
163 | if (errno == EAGAIN || errno == EWOULDBLOCK) { | |
84004dbf RS |
164 | return 0; |
165 | } | |
1896d37b RS |
166 | rpc_set_error(rpc, "Error when writing to socket :%s(%d)", strerror(errno), errno); |
167 | return -1; | |
84004dbf RS |
168 | } |
169 | ||
170 | rpc->outqueue->written += count; | |
171 | if (rpc->outqueue->written == total) { | |
172 | struct rpc_pdu *pdu = rpc->outqueue; | |
173 | ||
174 | SLIST_REMOVE(&rpc->outqueue, pdu); | |
175 | SLIST_ADD_END(&rpc->waitpdu, pdu); | |
176 | } | |
177 | } | |
178 | return 0; | |
179 | } | |
180 | ||
181 | static int rpc_read_from_socket(struct rpc_context *rpc) | |
182 | { | |
183 | int available; | |
184 | int size; | |
cdb19ec1 | 185 | int pdu_size; |
d14e2838 | 186 | int32_t count; |
84004dbf | 187 | |
f3a75078 | 188 | assert(rpc->magic == RPC_CONTEXT_MAGIC); |
84004dbf RS |
189 | |
190 | if (ioctl(rpc->fd, FIONREAD, &available) != 0) { | |
191 | rpc_set_error(rpc, "Ioctl FIONREAD returned error : %d. Closing socket.", errno); | |
192 | return -1; | |
193 | } | |
a8a1b858 | 194 | |
84004dbf RS |
195 | if (available == 0) { |
196 | rpc_set_error(rpc, "Socket has been closed"); | |
1896d37b | 197 | return -1; |
84004dbf | 198 | } |
cdb19ec1 | 199 | |
0268794f RS |
200 | if (rpc->is_udp) { |
201 | char *buf; | |
202 | socklen_t socklen = sizeof(rpc->udp_src); | |
203 | ||
204 | buf = malloc(available); | |
205 | if (buf == NULL) { | |
206 | rpc_set_error(rpc, "Failed to malloc buffer for recvfrom"); | |
207 | return -1; | |
208 | } | |
209 | count = recvfrom(rpc->fd, buf, available, MSG_DONTWAIT, (struct sockaddr *)&rpc->udp_src, &socklen); | |
210 | if (count < 0) { | |
211 | rpc_set_error(rpc, "Failed recvfrom: %s", strerror(errno)); | |
212 | free(buf); | |
60af7e19 | 213 | return -1; |
0268794f RS |
214 | } |
215 | if (rpc_process_pdu(rpc, buf, count) != 0) { | |
216 | rpc_set_error(rpc, "Invalid/garbage pdu received from server. Ignoring PDU"); | |
217 | free(buf); | |
218 | return -1; | |
219 | } | |
220 | free(buf); | |
221 | return 0; | |
222 | } | |
223 | ||
cdb19ec1 RS |
224 | /* read record marker, 4 bytes at the beginning of every pdu */ |
225 | if (rpc->inbuf == NULL) { | |
226 | rpc->insize = 4; | |
227 | rpc->inbuf = malloc(rpc->insize); | |
228 | if (rpc->inbuf == NULL) { | |
229 | rpc_set_error(rpc, "Failed to allocate buffer for record marker, errno:%d. Closing socket.", errno); | |
230 | return -1; | |
231 | } | |
232 | } | |
233 | if (rpc->inpos < 4) { | |
234 | size = 4 - rpc->inpos; | |
235 | ||
6874f61e | 236 | count = recv(rpc->fd, rpc->inbuf + rpc->inpos, size, 0); |
cdb19ec1 RS |
237 | if (count == -1) { |
238 | if (errno == EINTR) { | |
239 | return 0; | |
240 | } | |
241 | rpc_set_error(rpc, "Read from socket failed, errno:%d. Closing socket.", errno); | |
242 | return -1; | |
243 | } | |
244 | available -= count; | |
245 | rpc->inpos += count; | |
246 | } | |
247 | ||
248 | if (available == 0) { | |
249 | return 0; | |
250 | } | |
251 | ||
252 | pdu_size = rpc_get_pdu_size(rpc->inbuf); | |
253 | if (rpc->insize < pdu_size) { | |
254 | unsigned char *buf; | |
8907aea9 | 255 | |
cdb19ec1 RS |
256 | buf = malloc(pdu_size); |
257 | if (buf == NULL) { | |
258 | rpc_set_error(rpc, "Failed to allocate buffer of %d bytes for pdu, errno:%d. Closing socket.", pdu_size, errno); | |
259 | return -1; | |
260 | } | |
261 | memcpy(buf, rpc->inbuf, rpc->insize); | |
262 | free(rpc->inbuf); | |
263 | rpc->inbuf = buf; | |
264 | rpc->insize = rpc_get_pdu_size(rpc->inbuf); | |
84004dbf | 265 | } |
cdb19ec1 RS |
266 | |
267 | size = available; | |
268 | if (size > rpc->insize - rpc->inpos) { | |
269 | size = rpc->insize - rpc->inpos; | |
84004dbf RS |
270 | } |
271 | ||
6874f61e | 272 | count = recv(rpc->fd, rpc->inbuf + rpc->inpos, size, 0); |
84004dbf RS |
273 | if (count == -1) { |
274 | if (errno == EINTR) { | |
84004dbf RS |
275 | return 0; |
276 | } | |
277 | rpc_set_error(rpc, "Read from socket failed, errno:%d. Closing socket.", errno); | |
1896d37b | 278 | return -1; |
84004dbf | 279 | } |
cdb19ec1 RS |
280 | available -= count; |
281 | rpc->inpos += count; | |
84004dbf | 282 | |
cdb19ec1 | 283 | if (rpc->inpos == rpc->insize) { |
dd97d43a RS |
284 | char *buf = rpc->inbuf; |
285 | ||
286 | rpc->inbuf = NULL; | |
287 | rpc->insize = 0; | |
288 | rpc->inpos = 0; | |
289 | ||
290 | if (rpc_process_pdu(rpc, buf, pdu_size) != 0) { | |
84004dbf | 291 | rpc_set_error(rpc, "Invalid/garbage pdu received from server. Closing socket"); |
1896d37b | 292 | return -1; |
84004dbf | 293 | } |
751770fd | 294 | free(buf); |
84004dbf | 295 | } |
cdb19ec1 | 296 | |
84004dbf RS |
297 | return 0; |
298 | } | |
299 | ||
300 | ||
301 | ||
302 | int rpc_service(struct rpc_context *rpc, int revents) | |
303 | { | |
4a2b0876 RS |
304 | assert(rpc->magic == RPC_CONTEXT_MAGIC); |
305 | ||
84004dbf | 306 | if (revents & POLLERR) { |
fcc42bfe | 307 | #ifdef WIN32 |
a8a1b858 | 308 | char err = 0; |
fcc42bfe M |
309 | #else |
310 | int err = 0; | |
311 | #endif | |
912f7ad5 RS |
312 | socklen_t err_size = sizeof(err); |
313 | ||
314 | if (getsockopt(rpc->fd, SOL_SOCKET, SO_ERROR, | |
bb4e9ed6 | 315 | (char *)&err, &err_size) != 0 || err != 0) { |
912f7ad5 RS |
316 | if (err == 0) { |
317 | err = errno; | |
318 | } | |
319 | rpc_set_error(rpc, "rpc_service: socket error " | |
320 | "%s(%d).", | |
321 | strerror(err), err); | |
84004dbf | 322 | } else { |
912f7ad5 RS |
323 | rpc_set_error(rpc, "rpc_service: POLLERR, " |
324 | "Unknown socket error."); | |
84004dbf | 325 | } |
b990de23 RS |
326 | if (rpc->connect_cb != NULL) { |
327 | rpc->connect_cb(rpc, RPC_STATUS_ERROR, rpc->error_string, rpc->connect_data); | |
328 | } | |
84004dbf RS |
329 | return -1; |
330 | } | |
331 | if (revents & POLLHUP) { | |
84004dbf | 332 | rpc_set_error(rpc, "Socket failed with POLLHUP"); |
b990de23 RS |
333 | if (rpc->connect_cb != NULL) { |
334 | rpc->connect_cb(rpc, RPC_STATUS_ERROR, rpc->error_string, rpc->connect_data); | |
335 | } | |
1896d37b | 336 | return -1; |
84004dbf RS |
337 | } |
338 | ||
339 | if (rpc->is_connected == 0 && rpc->fd != -1 && revents&POLLOUT) { | |
912f7ad5 RS |
340 | int err = 0; |
341 | socklen_t err_size = sizeof(err); | |
342 | ||
343 | if (getsockopt(rpc->fd, SOL_SOCKET, SO_ERROR, | |
bb4e9ed6 | 344 | (char *)&err, &err_size) != 0 || err != 0) { |
912f7ad5 RS |
345 | if (err == 0) { |
346 | err = errno; | |
347 | } | |
348 | rpc_set_error(rpc, "rpc_service: socket error " | |
349 | "%s(%d) while connecting.", | |
350 | strerror(err), err); | |
b990de23 RS |
351 | if (rpc->connect_cb != NULL) { |
352 | rpc->connect_cb(rpc, RPC_STATUS_ERROR, | |
912f7ad5 | 353 | NULL, rpc->connect_data); |
b990de23 | 354 | } |
912f7ad5 RS |
355 | return -1; |
356 | } | |
357 | ||
84004dbf | 358 | rpc->is_connected = 1; |
b990de23 RS |
359 | if (rpc->connect_cb != NULL) { |
360 | rpc->connect_cb(rpc, RPC_STATUS_SUCCESS, NULL, rpc->connect_data); | |
361 | } | |
84004dbf RS |
362 | return 0; |
363 | } | |
364 | ||
b077fdeb RS |
365 | if (revents & POLLIN) { |
366 | if (rpc_read_from_socket(rpc) != 0) { | |
1744ef90 | 367 | rpc_reconnect_requeue(rpc); |
b077fdeb | 368 | return 0; |
84004dbf RS |
369 | } |
370 | } | |
371 | ||
b077fdeb RS |
372 | if (revents & POLLOUT && rpc->outqueue != NULL) { |
373 | if (rpc_write_to_socket(rpc) != 0) { | |
374 | rpc_set_error(rpc, "write to socket failed"); | |
1896d37b | 375 | return -1; |
84004dbf RS |
376 | } |
377 | } | |
378 | ||
379 | return 0; | |
380 | } | |
381 | ||
1744ef90 | 382 | void rpc_set_autoreconnect(struct rpc_context *rpc) |
84004dbf | 383 | { |
4a2b0876 RS |
384 | assert(rpc->magic == RPC_CONTEXT_MAGIC); |
385 | ||
1744ef90 RS |
386 | rpc->auto_reconnect = 1; |
387 | } | |
84004dbf | 388 | |
1744ef90 RS |
389 | void rpc_unset_autoreconnect(struct rpc_context *rpc) |
390 | { | |
4a2b0876 RS |
391 | assert(rpc->magic == RPC_CONTEXT_MAGIC); |
392 | ||
1744ef90 RS |
393 | rpc->auto_reconnect = 0; |
394 | } | |
070287e5 | 395 | |
1c8b4547 PL |
396 | void rpc_set_tcp_syncnt(struct rpc_context *rpc, int v) |
397 | { | |
398 | assert(rpc->magic == RPC_CONTEXT_MAGIC); | |
399 | ||
400 | rpc->tcp_syncnt = v; | |
401 | } | |
402 | ||
d43a8953 PL |
403 | #ifndef TCP_SYNCNT |
404 | #define TCP_SYNCNT 7 | |
405 | #endif | |
406 | ||
1744ef90 RS |
407 | static int rpc_connect_sockaddr_async(struct rpc_context *rpc, struct sockaddr_storage *s) |
408 | { | |
409 | int socksize; | |
84004dbf | 410 | |
4a2b0876 RS |
411 | assert(rpc->magic == RPC_CONTEXT_MAGIC); |
412 | ||
1744ef90 | 413 | switch (s->ss_family) { |
84004dbf | 414 | case AF_INET: |
84004dbf | 415 | socksize = sizeof(struct sockaddr_in); |
6874f61e | 416 | rpc->fd = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP); |
1c8b4547 PL |
417 | #ifdef HAVE_NETINET_TCP_H |
418 | if (rpc->tcp_syncnt != RPC_PARAM_UNDEFINED) { | |
419 | set_tcp_sockopt(rpc->fd, TCP_SYNCNT, rpc->tcp_syncnt); | |
420 | } | |
421 | #endif | |
84004dbf | 422 | break; |
1744ef90 RS |
423 | default: |
424 | rpc_set_error(rpc, "Can not handle AF_FAMILY:%d", s->ss_family); | |
425 | return -1; | |
84004dbf RS |
426 | } |
427 | ||
428 | if (rpc->fd == -1) { | |
429 | rpc_set_error(rpc, "Failed to open socket"); | |
1896d37b | 430 | return -1; |
84004dbf RS |
431 | } |
432 | ||
07fd0cbc RS |
433 | /* Some systems allow you to set capabilities on an executable |
434 | * to allow the file to be executed with privilege to bind to | |
435 | * privileged system ports, even if the user is not root. | |
436 | * | |
437 | * Opportunistically try to bind the socket to a low numbered | |
438 | * system port in the hope that the user is either root or the | |
439 | * executable has the CAP_NET_BIND_SERVICE. | |
440 | * | |
441 | * As soon as we fail the bind() with EACCES we know we will never | |
442 | * be able to bind to a system port so we terminate the loop. | |
443 | * | |
444 | * On linux, use | |
445 | * sudo setcap 'cap_net_bind_service=+ep' /path/executable | |
446 | * to make the executable able to bind to a system port. | |
ac559609 RI |
447 | * |
448 | * On Windows, there is no concept of privileged ports. Thus | |
449 | * binding will usually succeed. | |
07fd0cbc | 450 | */ |
ac559609 RI |
451 | { |
452 | struct sockaddr_in sin; | |
453 | static int portOfs = 0; | |
454 | const int firstPort = 512; /* >= 512 according to Sun docs */ | |
455 | const int portCount = IPPORT_RESERVED - firstPort; | |
cb5b8be2 | 456 | int startOfs, port, rc; |
ac559609 | 457 | |
cb5b8be2 RS |
458 | if (portOfs == 0) { |
459 | portOfs = time(NULL) % 400; | |
460 | } | |
461 | startOfs = portOfs; | |
ac559609 RI |
462 | do { |
463 | rc = -1; | |
464 | port = htons(firstPort + portOfs); | |
465 | portOfs = (portOfs + 1) % portCount; | |
466 | ||
467 | /* skip well-known ports */ | |
468 | if (!getservbyport(port, "tcp")) { | |
469 | memset(&sin, 0, sizeof(sin)); | |
470 | sin.sin_port = port; | |
471 | sin.sin_family = AF_INET; | |
472 | sin.sin_addr.s_addr = 0; | |
473 | ||
474 | rc = bind(rpc->fd, (struct sockaddr *)&sin, sizeof(struct sockaddr_in)); | |
475 | #if !defined(WIN32) | |
476 | /* we got EACCES, so don't try again */ | |
477 | if (rc != 0 && errno == EACCES) | |
478 | break; | |
479 | #endif | |
07fd0cbc | 480 | } |
ac559609 | 481 | } while (rc != 0 && portOfs != startOfs); |
07fd0cbc | 482 | } |
07fd0cbc | 483 | |
84004dbf | 484 | set_nonblocking(rpc->fd); |
07fd0cbc | 485 | |
f96b24fa RI |
486 | if (connect(rpc->fd, (struct sockaddr *)s, socksize) != 0 && errno != EINPROGRESS) { |
487 | rpc_set_error(rpc, "connect() to server failed. %s(%d)", strerror(errno), errno); | |
1896d37b | 488 | return -1; |
8907aea9 | 489 | } |
84004dbf RS |
490 | |
491 | return 0; | |
8907aea9 | 492 | } |
84004dbf | 493 | |
1744ef90 RS |
494 | int rpc_connect_async(struct rpc_context *rpc, const char *server, int port, rpc_cb cb, void *private_data) |
495 | { | |
496 | struct sockaddr_in *sin = (struct sockaddr_in *)&rpc->s; | |
497 | ||
4a2b0876 RS |
498 | assert(rpc->magic == RPC_CONTEXT_MAGIC); |
499 | ||
1744ef90 RS |
500 | if (rpc->fd != -1) { |
501 | rpc_set_error(rpc, "Trying to connect while already connected"); | |
502 | return -1; | |
503 | } | |
504 | ||
505 | if (rpc->is_udp != 0) { | |
506 | rpc_set_error(rpc, "Trying to connect on UDP socket"); | |
507 | return -1; | |
508 | } | |
509 | ||
510 | rpc->auto_reconnect = 0; | |
511 | ||
512 | sin->sin_family = AF_INET; | |
513 | sin->sin_port = htons(port); | |
514 | if (inet_pton(AF_INET, server, &sin->sin_addr) != 1) { | |
515 | rpc_set_error(rpc, "Not a valid server ip address"); | |
516 | return -1; | |
517 | } | |
518 | ||
519 | ||
520 | switch (rpc->s.ss_family) { | |
521 | case AF_INET: | |
522 | #ifdef HAVE_SOCKADDR_LEN | |
523 | sin->sin_len = sizeof(struct sockaddr_in); | |
524 | #endif | |
525 | break; | |
526 | } | |
527 | ||
528 | rpc->connect_cb = cb; | |
529 | rpc->connect_data = private_data; | |
530 | ||
531 | if (rpc_connect_sockaddr_async(rpc, &rpc->s) != 0) { | |
532 | return -1; | |
533 | } | |
534 | ||
535 | return 0; | |
8907aea9 | 536 | } |
1744ef90 | 537 | |
84004dbf RS |
538 | int rpc_disconnect(struct rpc_context *rpc, char *error) |
539 | { | |
4a2b0876 RS |
540 | assert(rpc->magic == RPC_CONTEXT_MAGIC); |
541 | ||
1744ef90 RS |
542 | rpc_unset_autoreconnect(rpc); |
543 | ||
84004dbf RS |
544 | if (rpc->fd != -1) { |
545 | close(rpc->fd); | |
546 | } | |
547 | rpc->fd = -1; | |
548 | ||
549 | rpc->is_connected = 0; | |
550 | ||
551 | rpc_error_all_pdus(rpc, error); | |
552 | ||
553 | return 0; | |
554 | } | |
485bc9b9 | 555 | |
1744ef90 RS |
556 | static void reconnect_cb(struct rpc_context *rpc, int status, void *data _U_, void *private_data) |
557 | { | |
4a2b0876 RS |
558 | assert(rpc->magic == RPC_CONTEXT_MAGIC); |
559 | ||
1744ef90 RS |
560 | if (status != RPC_STATUS_SUCCESS) { |
561 | rpc_error_all_pdus(rpc, "RPC ERROR: Failed to reconnect async"); | |
562 | return; | |
563 | } | |
564 | ||
565 | rpc->is_connected = 1; | |
b990de23 | 566 | rpc->connect_cb = NULL; |
1744ef90 RS |
567 | } |
568 | ||
569 | /* disconnect but do not error all PDUs, just move pdus in-flight back to the outqueue and reconnect */ | |
570 | static int rpc_reconnect_requeue(struct rpc_context *rpc) | |
b077fdeb RS |
571 | { |
572 | struct rpc_pdu *pdu; | |
573 | ||
4a2b0876 RS |
574 | assert(rpc->magic == RPC_CONTEXT_MAGIC); |
575 | ||
b077fdeb RS |
576 | if (rpc->fd != -1) { |
577 | close(rpc->fd); | |
578 | } | |
579 | rpc->fd = -1; | |
580 | ||
581 | rpc->is_connected = 0; | |
582 | ||
583 | /* socket is closed so we will not get any replies to any commands | |
584 | * in flight. Move them all over from the waitpdu queue back to the out queue | |
585 | */ | |
586 | for (pdu=rpc->waitpdu; pdu; pdu=pdu->next) { | |
587 | SLIST_REMOVE(&rpc->waitpdu, pdu); | |
588 | SLIST_ADD(&rpc->outqueue, pdu); | |
1744ef90 RS |
589 | /* we have to re-send the whole pdu again */ |
590 | pdu->written = 0; | |
591 | } | |
592 | ||
593 | if (rpc->auto_reconnect != 0) { | |
594 | rpc->connect_cb = reconnect_cb; | |
595 | ||
596 | if (rpc_connect_sockaddr_async(rpc, &rpc->s) != 0) { | |
597 | rpc_error_all_pdus(rpc, "RPC ERROR: Failed to reconnect async"); | |
598 | return -1; | |
599 | } | |
b077fdeb RS |
600 | } |
601 | ||
602 | return 0; | |
603 | } | |
604 | ||
485bc9b9 RS |
605 | |
606 | int rpc_bind_udp(struct rpc_context *rpc, char *addr, int port) | |
607 | { | |
608 | struct addrinfo *ai = NULL; | |
609 | char service[6]; | |
610 | ||
4a2b0876 RS |
611 | assert(rpc->magic == RPC_CONTEXT_MAGIC); |
612 | ||
485bc9b9 RS |
613 | if (rpc->is_udp == 0) { |
614 | rpc_set_error(rpc, "Cant not bind UDP. Not UDP context"); | |
615 | return -1; | |
616 | } | |
617 | ||
6874f61e | 618 | sprintf(service, "%d", port); |
485bc9b9 RS |
619 | if (getaddrinfo(addr, service, NULL, &ai) != 0) { |
620 | rpc_set_error(rpc, "Invalid address:%s. " | |
8907aea9 | 621 | "Can not resolv into IPv4/v6 structure.", addr); |
485bc9b9 RS |
622 | return -1; |
623 | } | |
624 | ||
625 | switch(ai->ai_family) { | |
626 | case AF_INET: | |
627 | rpc->fd = socket(ai->ai_family, SOCK_DGRAM, 0); | |
628 | if (rpc->fd == -1) { | |
8907aea9 | 629 | rpc_set_error(rpc, "Failed to create UDP socket: %s", strerror(errno)); |
485bc9b9 RS |
630 | freeaddrinfo(ai); |
631 | return -1; | |
632 | } | |
633 | ||
634 | if (bind(rpc->fd, (struct sockaddr *)ai->ai_addr, sizeof(struct sockaddr_in)) != 0) { | |
8907aea9 | 635 | rpc_set_error(rpc, "Failed to bind to UDP socket: %s",strerror(errno)); |
485bc9b9 RS |
636 | freeaddrinfo(ai); |
637 | return -1; | |
638 | } | |
639 | break; | |
640 | default: | |
641 | rpc_set_error(rpc, "Can not handle UPD sockets of family %d yet", ai->ai_family); | |
642 | freeaddrinfo(ai); | |
643 | return -1; | |
644 | } | |
645 | ||
646 | freeaddrinfo(ai); | |
647 | ||
648 | return 0; | |
649 | } | |
650 | ||
5bf60dc6 RS |
651 | int rpc_set_udp_destination(struct rpc_context *rpc, char *addr, int port, int is_broadcast) |
652 | { | |
653 | struct addrinfo *ai = NULL; | |
654 | char service[6]; | |
655 | ||
4a2b0876 RS |
656 | assert(rpc->magic == RPC_CONTEXT_MAGIC); |
657 | ||
5bf60dc6 RS |
658 | if (rpc->is_udp == 0) { |
659 | rpc_set_error(rpc, "Can not set destination sockaddr. Not UDP context"); | |
660 | return -1; | |
661 | } | |
662 | ||
6874f61e | 663 | sprintf(service, "%d", port); |
5bf60dc6 RS |
664 | if (getaddrinfo(addr, service, NULL, &ai) != 0) { |
665 | rpc_set_error(rpc, "Invalid address:%s. " | |
8907aea9 | 666 | "Can not resolv into IPv4/v6 structure.", addr); |
5bf60dc6 RS |
667 | return -1; |
668 | } | |
669 | ||
670 | if (rpc->udp_dest) { | |
671 | free(rpc->udp_dest); | |
672 | rpc->udp_dest = NULL; | |
673 | } | |
674 | rpc->udp_dest = malloc(ai->ai_addrlen); | |
675 | if (rpc->udp_dest == NULL) { | |
676 | rpc_set_error(rpc, "Out of memory. Failed to allocate sockaddr structure"); | |
be7f5933 | 677 | freeaddrinfo(ai); |
5bf60dc6 RS |
678 | return -1; |
679 | } | |
680 | memcpy(rpc->udp_dest, ai->ai_addr, ai->ai_addrlen); | |
681 | freeaddrinfo(ai); | |
682 | ||
683 | rpc->is_broadcast = is_broadcast; | |
bb4e9ed6 | 684 | setsockopt(rpc->fd, SOL_SOCKET, SO_BROADCAST, (char *)&is_broadcast, sizeof(is_broadcast)); |
5bf60dc6 RS |
685 | |
686 | return 0; | |
687 | } | |
c481da67 RS |
688 | |
689 | struct sockaddr *rpc_get_recv_sockaddr(struct rpc_context *rpc) | |
690 | { | |
4a2b0876 RS |
691 | assert(rpc->magic == RPC_CONTEXT_MAGIC); |
692 | ||
c481da67 RS |
693 | return (struct sockaddr *)&rpc->udp_src; |
694 | } | |
83aa785d RS |
695 | |
696 | int rpc_queue_length(struct rpc_context *rpc) | |
697 | { | |
698 | int i=0; | |
699 | struct rpc_pdu *pdu; | |
700 | ||
4a2b0876 RS |
701 | assert(rpc->magic == RPC_CONTEXT_MAGIC); |
702 | ||
83aa785d RS |
703 | for(pdu = rpc->outqueue; pdu; pdu = pdu->next) { |
704 | i++; | |
705 | } | |
706 | for(pdu = rpc->waitpdu; pdu; pdu = pdu->next) { | |
707 | i++; | |
708 | } | |
709 | return i; | |
710 | } | |
6ec481d3 RS |
711 | |
712 | void rpc_set_fd(struct rpc_context *rpc, int fd) | |
713 | { | |
714 | assert(rpc->magic == RPC_CONTEXT_MAGIC); | |
715 | ||
716 | rpc->fd = fd; | |
717 | } |