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 | ||
1744ef90 RS |
83 | static int rpc_reconnect_requeue(struct rpc_context *rpc); |
84 | static int rpc_connect_sockaddr_async(struct rpc_context *rpc, struct sockaddr_storage *s); | |
b077fdeb | 85 | |
84004dbf RS |
86 | static void set_nonblocking(int fd) |
87 | { | |
99c14c9b | 88 | int v = 0; |
6874f61e | 89 | #if defined(WIN32) |
99c14c9b | 90 | long nonblocking=1; |
622489d3 | 91 | v = ioctl(fd, FIONBIO, &nonblocking); |
6874f61e | 92 | #else |
84004dbf RS |
93 | v = fcntl(fd, F_GETFL, 0); |
94 | fcntl(fd, F_SETFL, v | O_NONBLOCK); | |
a8a1b858 | 95 | #endif //FIXME |
84004dbf RS |
96 | } |
97 | ||
1c8b4547 PL |
98 | #ifdef HAVE_NETINET_TCP_H |
99 | int set_tcp_sockopt(int sockfd, int optname, int value) | |
100 | { | |
101 | int level; | |
102 | ||
103 | #if defined(__FreeBSD__) || defined(__sun) || (defined(__APPLE__) && defined(__MACH__)) | |
104 | struct protoent *buf; | |
105 | ||
106 | if ((buf = getprotobyname("tcp")) != NULL) | |
107 | level = buf->p_proto; | |
108 | else | |
109 | return -1; | |
110 | #else | |
111 | level = SOL_TCP; | |
112 | #endif | |
113 | ||
114 | return setsockopt(sockfd, level, optname, (char *)&value, sizeof(value)); | |
115 | } | |
116 | #endif | |
117 | ||
84004dbf RS |
118 | int rpc_get_fd(struct rpc_context *rpc) |
119 | { | |
4a2b0876 RS |
120 | assert(rpc->magic == RPC_CONTEXT_MAGIC); |
121 | ||
84004dbf RS |
122 | return rpc->fd; |
123 | } | |
124 | ||
125 | int rpc_which_events(struct rpc_context *rpc) | |
126 | { | |
4a2b0876 RS |
127 | int events; |
128 | ||
129 | assert(rpc->magic == RPC_CONTEXT_MAGIC); | |
130 | ||
131 | events = rpc->is_connected ? POLLIN : POLLOUT; | |
84004dbf | 132 | |
5911f3e8 RS |
133 | if (rpc->is_udp != 0) { |
134 | /* for udp sockets we only wait for pollin */ | |
135 | return POLLIN; | |
136 | } | |
137 | ||
84004dbf RS |
138 | if (rpc->outqueue) { |
139 | events |= POLLOUT; | |
140 | } | |
141 | return events; | |
142 | } | |
143 | ||
144 | static int rpc_write_to_socket(struct rpc_context *rpc) | |
145 | { | |
d14e2838 | 146 | int32_t count; |
84004dbf | 147 | |
4a2b0876 RS |
148 | assert(rpc->magic == RPC_CONTEXT_MAGIC); |
149 | ||
84004dbf | 150 | if (rpc->fd == -1) { |
1896d37b RS |
151 | rpc_set_error(rpc, "trying to write but not connected"); |
152 | return -1; | |
84004dbf RS |
153 | } |
154 | ||
155 | while (rpc->outqueue != NULL) { | |
183451cf | 156 | int64_t total; |
84004dbf RS |
157 | |
158 | total = rpc->outqueue->outdata.size; | |
159 | ||
6874f61e | 160 | count = send(rpc->fd, rpc->outqueue->outdata.data + rpc->outqueue->written, total - rpc->outqueue->written, 0); |
84004dbf RS |
161 | if (count == -1) { |
162 | if (errno == EAGAIN || errno == EWOULDBLOCK) { | |
84004dbf RS |
163 | return 0; |
164 | } | |
1896d37b RS |
165 | rpc_set_error(rpc, "Error when writing to socket :%s(%d)", strerror(errno), errno); |
166 | return -1; | |
84004dbf RS |
167 | } |
168 | ||
169 | rpc->outqueue->written += count; | |
170 | if (rpc->outqueue->written == total) { | |
171 | struct rpc_pdu *pdu = rpc->outqueue; | |
172 | ||
173 | SLIST_REMOVE(&rpc->outqueue, pdu); | |
174 | SLIST_ADD_END(&rpc->waitpdu, pdu); | |
175 | } | |
176 | } | |
177 | return 0; | |
178 | } | |
179 | ||
180 | static int rpc_read_from_socket(struct rpc_context *rpc) | |
181 | { | |
182 | int available; | |
183 | int size; | |
cdb19ec1 | 184 | int pdu_size; |
d14e2838 | 185 | int32_t count; |
84004dbf | 186 | |
f3a75078 | 187 | assert(rpc->magic == RPC_CONTEXT_MAGIC); |
84004dbf RS |
188 | |
189 | if (ioctl(rpc->fd, FIONREAD, &available) != 0) { | |
190 | rpc_set_error(rpc, "Ioctl FIONREAD returned error : %d. Closing socket.", errno); | |
191 | return -1; | |
192 | } | |
a8a1b858 | 193 | |
84004dbf RS |
194 | if (available == 0) { |
195 | rpc_set_error(rpc, "Socket has been closed"); | |
1896d37b | 196 | return -1; |
84004dbf | 197 | } |
cdb19ec1 | 198 | |
0268794f RS |
199 | if (rpc->is_udp) { |
200 | char *buf; | |
201 | socklen_t socklen = sizeof(rpc->udp_src); | |
202 | ||
203 | buf = malloc(available); | |
204 | if (buf == NULL) { | |
205 | rpc_set_error(rpc, "Failed to malloc buffer for recvfrom"); | |
206 | return -1; | |
207 | } | |
208 | count = recvfrom(rpc->fd, buf, available, MSG_DONTWAIT, (struct sockaddr *)&rpc->udp_src, &socklen); | |
209 | if (count < 0) { | |
210 | rpc_set_error(rpc, "Failed recvfrom: %s", strerror(errno)); | |
211 | free(buf); | |
60af7e19 | 212 | return -1; |
0268794f RS |
213 | } |
214 | if (rpc_process_pdu(rpc, buf, count) != 0) { | |
215 | rpc_set_error(rpc, "Invalid/garbage pdu received from server. Ignoring PDU"); | |
216 | free(buf); | |
217 | return -1; | |
218 | } | |
219 | free(buf); | |
220 | return 0; | |
221 | } | |
222 | ||
cdb19ec1 RS |
223 | /* read record marker, 4 bytes at the beginning of every pdu */ |
224 | if (rpc->inbuf == NULL) { | |
225 | rpc->insize = 4; | |
226 | rpc->inbuf = malloc(rpc->insize); | |
227 | if (rpc->inbuf == NULL) { | |
228 | rpc_set_error(rpc, "Failed to allocate buffer for record marker, errno:%d. Closing socket.", errno); | |
229 | return -1; | |
230 | } | |
231 | } | |
232 | if (rpc->inpos < 4) { | |
233 | size = 4 - rpc->inpos; | |
234 | ||
6874f61e | 235 | count = recv(rpc->fd, rpc->inbuf + rpc->inpos, size, 0); |
cdb19ec1 RS |
236 | if (count == -1) { |
237 | if (errno == EINTR) { | |
238 | return 0; | |
239 | } | |
240 | rpc_set_error(rpc, "Read from socket failed, errno:%d. Closing socket.", errno); | |
241 | return -1; | |
242 | } | |
243 | available -= count; | |
244 | rpc->inpos += count; | |
245 | } | |
246 | ||
247 | if (available == 0) { | |
248 | return 0; | |
249 | } | |
250 | ||
251 | pdu_size = rpc_get_pdu_size(rpc->inbuf); | |
252 | if (rpc->insize < pdu_size) { | |
253 | unsigned char *buf; | |
8907aea9 | 254 | |
cdb19ec1 RS |
255 | buf = malloc(pdu_size); |
256 | if (buf == NULL) { | |
257 | rpc_set_error(rpc, "Failed to allocate buffer of %d bytes for pdu, errno:%d. Closing socket.", pdu_size, errno); | |
258 | return -1; | |
259 | } | |
260 | memcpy(buf, rpc->inbuf, rpc->insize); | |
261 | free(rpc->inbuf); | |
262 | rpc->inbuf = buf; | |
263 | rpc->insize = rpc_get_pdu_size(rpc->inbuf); | |
84004dbf | 264 | } |
cdb19ec1 RS |
265 | |
266 | size = available; | |
267 | if (size > rpc->insize - rpc->inpos) { | |
268 | size = rpc->insize - rpc->inpos; | |
84004dbf RS |
269 | } |
270 | ||
6874f61e | 271 | count = recv(rpc->fd, rpc->inbuf + rpc->inpos, size, 0); |
84004dbf RS |
272 | if (count == -1) { |
273 | if (errno == EINTR) { | |
84004dbf RS |
274 | return 0; |
275 | } | |
276 | rpc_set_error(rpc, "Read from socket failed, errno:%d. Closing socket.", errno); | |
1896d37b | 277 | return -1; |
84004dbf | 278 | } |
cdb19ec1 RS |
279 | available -= count; |
280 | rpc->inpos += count; | |
84004dbf | 281 | |
cdb19ec1 | 282 | if (rpc->inpos == rpc->insize) { |
dd97d43a RS |
283 | char *buf = rpc->inbuf; |
284 | ||
285 | rpc->inbuf = NULL; | |
286 | rpc->insize = 0; | |
287 | rpc->inpos = 0; | |
288 | ||
289 | if (rpc_process_pdu(rpc, buf, pdu_size) != 0) { | |
84004dbf | 290 | rpc_set_error(rpc, "Invalid/garbage pdu received from server. Closing socket"); |
1896d37b | 291 | return -1; |
84004dbf | 292 | } |
751770fd | 293 | free(buf); |
84004dbf | 294 | } |
cdb19ec1 | 295 | |
84004dbf RS |
296 | return 0; |
297 | } | |
298 | ||
299 | ||
300 | ||
301 | int rpc_service(struct rpc_context *rpc, int revents) | |
302 | { | |
4a2b0876 RS |
303 | assert(rpc->magic == RPC_CONTEXT_MAGIC); |
304 | ||
84004dbf | 305 | if (revents & POLLERR) { |
fcc42bfe | 306 | #ifdef WIN32 |
a8a1b858 | 307 | char err = 0; |
fcc42bfe M |
308 | #else |
309 | int err = 0; | |
310 | #endif | |
912f7ad5 RS |
311 | socklen_t err_size = sizeof(err); |
312 | ||
313 | if (getsockopt(rpc->fd, SOL_SOCKET, SO_ERROR, | |
bb4e9ed6 | 314 | (char *)&err, &err_size) != 0 || err != 0) { |
912f7ad5 RS |
315 | if (err == 0) { |
316 | err = errno; | |
317 | } | |
318 | rpc_set_error(rpc, "rpc_service: socket error " | |
319 | "%s(%d).", | |
320 | strerror(err), err); | |
84004dbf | 321 | } else { |
912f7ad5 RS |
322 | rpc_set_error(rpc, "rpc_service: POLLERR, " |
323 | "Unknown socket error."); | |
84004dbf | 324 | } |
b990de23 RS |
325 | if (rpc->connect_cb != NULL) { |
326 | rpc->connect_cb(rpc, RPC_STATUS_ERROR, rpc->error_string, rpc->connect_data); | |
327 | } | |
84004dbf RS |
328 | return -1; |
329 | } | |
330 | if (revents & POLLHUP) { | |
84004dbf | 331 | rpc_set_error(rpc, "Socket failed with POLLHUP"); |
b990de23 RS |
332 | if (rpc->connect_cb != NULL) { |
333 | rpc->connect_cb(rpc, RPC_STATUS_ERROR, rpc->error_string, rpc->connect_data); | |
334 | } | |
1896d37b | 335 | return -1; |
84004dbf RS |
336 | } |
337 | ||
338 | if (rpc->is_connected == 0 && rpc->fd != -1 && revents&POLLOUT) { | |
912f7ad5 RS |
339 | int err = 0; |
340 | socklen_t err_size = sizeof(err); | |
341 | ||
342 | if (getsockopt(rpc->fd, SOL_SOCKET, SO_ERROR, | |
bb4e9ed6 | 343 | (char *)&err, &err_size) != 0 || err != 0) { |
912f7ad5 RS |
344 | if (err == 0) { |
345 | err = errno; | |
346 | } | |
347 | rpc_set_error(rpc, "rpc_service: socket error " | |
348 | "%s(%d) while connecting.", | |
349 | strerror(err), err); | |
b990de23 RS |
350 | if (rpc->connect_cb != NULL) { |
351 | rpc->connect_cb(rpc, RPC_STATUS_ERROR, | |
912f7ad5 | 352 | NULL, rpc->connect_data); |
b990de23 | 353 | } |
912f7ad5 RS |
354 | return -1; |
355 | } | |
356 | ||
84004dbf | 357 | rpc->is_connected = 1; |
b990de23 RS |
358 | if (rpc->connect_cb != NULL) { |
359 | rpc->connect_cb(rpc, RPC_STATUS_SUCCESS, NULL, rpc->connect_data); | |
360 | } | |
84004dbf RS |
361 | return 0; |
362 | } | |
363 | ||
b077fdeb RS |
364 | if (revents & POLLIN) { |
365 | if (rpc_read_from_socket(rpc) != 0) { | |
1744ef90 | 366 | rpc_reconnect_requeue(rpc); |
b077fdeb | 367 | return 0; |
84004dbf RS |
368 | } |
369 | } | |
370 | ||
b077fdeb RS |
371 | if (revents & POLLOUT && rpc->outqueue != NULL) { |
372 | if (rpc_write_to_socket(rpc) != 0) { | |
373 | rpc_set_error(rpc, "write to socket failed"); | |
1896d37b | 374 | return -1; |
84004dbf RS |
375 | } |
376 | } | |
377 | ||
378 | return 0; | |
379 | } | |
380 | ||
1744ef90 | 381 | void rpc_set_autoreconnect(struct rpc_context *rpc) |
84004dbf | 382 | { |
4a2b0876 RS |
383 | assert(rpc->magic == RPC_CONTEXT_MAGIC); |
384 | ||
1744ef90 RS |
385 | rpc->auto_reconnect = 1; |
386 | } | |
84004dbf | 387 | |
1744ef90 RS |
388 | void rpc_unset_autoreconnect(struct rpc_context *rpc) |
389 | { | |
4a2b0876 RS |
390 | assert(rpc->magic == RPC_CONTEXT_MAGIC); |
391 | ||
1744ef90 RS |
392 | rpc->auto_reconnect = 0; |
393 | } | |
070287e5 | 394 | |
1c8b4547 PL |
395 | void rpc_set_tcp_syncnt(struct rpc_context *rpc, int v) |
396 | { | |
397 | assert(rpc->magic == RPC_CONTEXT_MAGIC); | |
398 | ||
399 | rpc->tcp_syncnt = v; | |
400 | } | |
401 | ||
d43a8953 PL |
402 | #ifndef TCP_SYNCNT |
403 | #define TCP_SYNCNT 7 | |
404 | #endif | |
405 | ||
1744ef90 RS |
406 | static int rpc_connect_sockaddr_async(struct rpc_context *rpc, struct sockaddr_storage *s) |
407 | { | |
408 | int socksize; | |
84004dbf | 409 | |
4a2b0876 RS |
410 | assert(rpc->magic == RPC_CONTEXT_MAGIC); |
411 | ||
1744ef90 | 412 | switch (s->ss_family) { |
84004dbf | 413 | case AF_INET: |
84004dbf | 414 | socksize = sizeof(struct sockaddr_in); |
6874f61e | 415 | rpc->fd = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP); |
1c8b4547 PL |
416 | #ifdef HAVE_NETINET_TCP_H |
417 | if (rpc->tcp_syncnt != RPC_PARAM_UNDEFINED) { | |
418 | set_tcp_sockopt(rpc->fd, TCP_SYNCNT, rpc->tcp_syncnt); | |
419 | } | |
1c1e09ad RS |
420 | #endif |
421 | break; | |
422 | case AF_INET6: | |
423 | socksize = sizeof(struct sockaddr_in6); | |
424 | rpc->fd = socket(AF_INET6, SOCK_STREAM, IPPROTO_TCP); | |
425 | #ifdef HAVE_NETINET_TCP_H | |
426 | if (rpc->tcp_syncnt != RPC_PARAM_UNDEFINED) { | |
427 | set_tcp_sockopt(rpc->fd, TCP_SYNCNT, rpc->tcp_syncnt); | |
428 | } | |
1c8b4547 | 429 | #endif |
84004dbf | 430 | break; |
1744ef90 RS |
431 | default: |
432 | rpc_set_error(rpc, "Can not handle AF_FAMILY:%d", s->ss_family); | |
433 | return -1; | |
84004dbf RS |
434 | } |
435 | ||
436 | if (rpc->fd == -1) { | |
437 | rpc_set_error(rpc, "Failed to open socket"); | |
1896d37b | 438 | return -1; |
84004dbf RS |
439 | } |
440 | ||
07fd0cbc RS |
441 | /* Some systems allow you to set capabilities on an executable |
442 | * to allow the file to be executed with privilege to bind to | |
443 | * privileged system ports, even if the user is not root. | |
444 | * | |
445 | * Opportunistically try to bind the socket to a low numbered | |
446 | * system port in the hope that the user is either root or the | |
447 | * executable has the CAP_NET_BIND_SERVICE. | |
448 | * | |
449 | * As soon as we fail the bind() with EACCES we know we will never | |
450 | * be able to bind to a system port so we terminate the loop. | |
451 | * | |
452 | * On linux, use | |
453 | * sudo setcap 'cap_net_bind_service=+ep' /path/executable | |
454 | * to make the executable able to bind to a system port. | |
ac559609 RI |
455 | * |
456 | * On Windows, there is no concept of privileged ports. Thus | |
457 | * binding will usually succeed. | |
07fd0cbc | 458 | */ |
ac559609 | 459 | { |
1c1e09ad | 460 | struct sockaddr_storage ss; |
ac559609 RI |
461 | static int portOfs = 0; |
462 | const int firstPort = 512; /* >= 512 according to Sun docs */ | |
463 | const int portCount = IPPORT_RESERVED - firstPort; | |
cb5b8be2 | 464 | int startOfs, port, rc; |
ac559609 | 465 | |
cb5b8be2 RS |
466 | if (portOfs == 0) { |
467 | portOfs = time(NULL) % 400; | |
468 | } | |
469 | startOfs = portOfs; | |
ac559609 RI |
470 | do { |
471 | rc = -1; | |
472 | port = htons(firstPort + portOfs); | |
473 | portOfs = (portOfs + 1) % portCount; | |
474 | ||
475 | /* skip well-known ports */ | |
476 | if (!getservbyport(port, "tcp")) { | |
1c1e09ad RS |
477 | memset(&ss, 0, sizeof(ss)); |
478 | ||
479 | switch (s->ss_family) { | |
480 | case AF_INET: | |
481 | ((struct sockaddr_in *)&ss)->sin_port = port; | |
482 | ((struct sockaddr_in *)&ss)->sin_family = AF_INET; | |
483 | #ifdef HAVE_SOCKADDR_LEN | |
484 | ((struct sockaddr_in *)&ss)->sin_len = sizeof(struct sockaddr_in); | |
485 | #endif | |
486 | break; | |
487 | case AF_INET6: | |
488 | ((struct sockaddr_in6 *)&ss)->sin6_port = port; | |
489 | ((struct sockaddr_in6 *)&ss)->sin6_family = AF_INET6; | |
490 | #ifdef HAVE_SOCKADDR_LEN | |
491 | ((struct sockaddr_in6 *)&ss)->sin6_len = sizeof(struct sockaddr_in); | |
492 | #endif | |
493 | break; | |
494 | } | |
ac559609 | 495 | |
1c1e09ad | 496 | rc = bind(rpc->fd, (struct sockaddr *)&ss, socksize); |
ac559609 RI |
497 | #if !defined(WIN32) |
498 | /* we got EACCES, so don't try again */ | |
499 | if (rc != 0 && errno == EACCES) | |
500 | break; | |
501 | #endif | |
07fd0cbc | 502 | } |
ac559609 | 503 | } while (rc != 0 && portOfs != startOfs); |
07fd0cbc | 504 | } |
07fd0cbc | 505 | |
84004dbf | 506 | set_nonblocking(rpc->fd); |
07fd0cbc | 507 | |
f96b24fa RI |
508 | if (connect(rpc->fd, (struct sockaddr *)s, socksize) != 0 && errno != EINPROGRESS) { |
509 | rpc_set_error(rpc, "connect() to server failed. %s(%d)", strerror(errno), errno); | |
1896d37b | 510 | return -1; |
8907aea9 | 511 | } |
84004dbf RS |
512 | |
513 | return 0; | |
8907aea9 | 514 | } |
84004dbf | 515 | |
1744ef90 RS |
516 | int rpc_connect_async(struct rpc_context *rpc, const char *server, int port, rpc_cb cb, void *private_data) |
517 | { | |
1c1e09ad | 518 | struct addrinfo *ai = NULL; |
1744ef90 | 519 | |
4a2b0876 RS |
520 | assert(rpc->magic == RPC_CONTEXT_MAGIC); |
521 | ||
1744ef90 RS |
522 | if (rpc->fd != -1) { |
523 | rpc_set_error(rpc, "Trying to connect while already connected"); | |
524 | return -1; | |
525 | } | |
526 | ||
527 | if (rpc->is_udp != 0) { | |
528 | rpc_set_error(rpc, "Trying to connect on UDP socket"); | |
529 | return -1; | |
530 | } | |
531 | ||
532 | rpc->auto_reconnect = 0; | |
533 | ||
1c1e09ad RS |
534 | if (getaddrinfo(server, NULL, NULL, &ai) != 0) { |
535 | rpc_set_error(rpc, "Invalid address:%s. " | |
536 | "Can not resolv into IPv4/v6 structure.", server); | |
1744ef90 | 537 | return -1; |
1c1e09ad | 538 | } |
1744ef90 | 539 | |
1c1e09ad | 540 | switch (ai->ai_family) { |
1744ef90 | 541 | case AF_INET: |
1c1e09ad RS |
542 | ((struct sockaddr_in *)&rpc->s)->sin_family = ai->ai_family; |
543 | ((struct sockaddr_in *)&rpc->s)->sin_port = htons(port); | |
1744ef90 | 544 | #ifdef HAVE_SOCKADDR_LEN |
1c1e09ad RS |
545 | ((struct sockaddr_in *)&rpc->s)->sin_len = sizeof(struct sockaddr_in); |
546 | #endif | |
547 | break; | |
548 | case AF_INET6: | |
549 | ((struct sockaddr_in6 *)&rpc->s)->sin6_family = ai->ai_family; | |
550 | ((struct sockaddr_in6 *)&rpc->s)->sin6_port = htons(port); | |
551 | #ifdef HAVE_SOCKADDR_LEN | |
552 | ((struct sockaddr_in6 *)&rpc->s)->sin6_len = sizeof(struct sockaddr_in6); | |
1744ef90 RS |
553 | #endif |
554 | break; | |
555 | } | |
556 | ||
557 | rpc->connect_cb = cb; | |
558 | rpc->connect_data = private_data; | |
559 | ||
1c1e09ad RS |
560 | freeaddrinfo(ai); |
561 | ||
1744ef90 RS |
562 | if (rpc_connect_sockaddr_async(rpc, &rpc->s) != 0) { |
563 | return -1; | |
564 | } | |
565 | ||
566 | return 0; | |
8907aea9 | 567 | } |
1744ef90 | 568 | |
84004dbf RS |
569 | int rpc_disconnect(struct rpc_context *rpc, char *error) |
570 | { | |
4a2b0876 RS |
571 | assert(rpc->magic == RPC_CONTEXT_MAGIC); |
572 | ||
1744ef90 RS |
573 | rpc_unset_autoreconnect(rpc); |
574 | ||
84004dbf RS |
575 | if (rpc->fd != -1) { |
576 | close(rpc->fd); | |
577 | } | |
578 | rpc->fd = -1; | |
579 | ||
580 | rpc->is_connected = 0; | |
581 | ||
582 | rpc_error_all_pdus(rpc, error); | |
583 | ||
584 | return 0; | |
585 | } | |
485bc9b9 | 586 | |
1744ef90 RS |
587 | static void reconnect_cb(struct rpc_context *rpc, int status, void *data _U_, void *private_data) |
588 | { | |
4a2b0876 RS |
589 | assert(rpc->magic == RPC_CONTEXT_MAGIC); |
590 | ||
1744ef90 RS |
591 | if (status != RPC_STATUS_SUCCESS) { |
592 | rpc_error_all_pdus(rpc, "RPC ERROR: Failed to reconnect async"); | |
593 | return; | |
594 | } | |
595 | ||
596 | rpc->is_connected = 1; | |
b990de23 | 597 | rpc->connect_cb = NULL; |
1744ef90 RS |
598 | } |
599 | ||
600 | /* disconnect but do not error all PDUs, just move pdus in-flight back to the outqueue and reconnect */ | |
601 | static int rpc_reconnect_requeue(struct rpc_context *rpc) | |
b077fdeb RS |
602 | { |
603 | struct rpc_pdu *pdu; | |
604 | ||
4a2b0876 RS |
605 | assert(rpc->magic == RPC_CONTEXT_MAGIC); |
606 | ||
b077fdeb RS |
607 | if (rpc->fd != -1) { |
608 | close(rpc->fd); | |
609 | } | |
610 | rpc->fd = -1; | |
611 | ||
612 | rpc->is_connected = 0; | |
613 | ||
614 | /* socket is closed so we will not get any replies to any commands | |
615 | * in flight. Move them all over from the waitpdu queue back to the out queue | |
616 | */ | |
617 | for (pdu=rpc->waitpdu; pdu; pdu=pdu->next) { | |
618 | SLIST_REMOVE(&rpc->waitpdu, pdu); | |
619 | SLIST_ADD(&rpc->outqueue, pdu); | |
1744ef90 RS |
620 | /* we have to re-send the whole pdu again */ |
621 | pdu->written = 0; | |
622 | } | |
623 | ||
624 | if (rpc->auto_reconnect != 0) { | |
625 | rpc->connect_cb = reconnect_cb; | |
626 | ||
627 | if (rpc_connect_sockaddr_async(rpc, &rpc->s) != 0) { | |
628 | rpc_error_all_pdus(rpc, "RPC ERROR: Failed to reconnect async"); | |
629 | return -1; | |
630 | } | |
b077fdeb RS |
631 | } |
632 | ||
633 | return 0; | |
634 | } | |
635 | ||
485bc9b9 RS |
636 | |
637 | int rpc_bind_udp(struct rpc_context *rpc, char *addr, int port) | |
638 | { | |
639 | struct addrinfo *ai = NULL; | |
640 | char service[6]; | |
641 | ||
4a2b0876 RS |
642 | assert(rpc->magic == RPC_CONTEXT_MAGIC); |
643 | ||
485bc9b9 RS |
644 | if (rpc->is_udp == 0) { |
645 | rpc_set_error(rpc, "Cant not bind UDP. Not UDP context"); | |
646 | return -1; | |
647 | } | |
648 | ||
6874f61e | 649 | sprintf(service, "%d", port); |
485bc9b9 RS |
650 | if (getaddrinfo(addr, service, NULL, &ai) != 0) { |
651 | rpc_set_error(rpc, "Invalid address:%s. " | |
8907aea9 | 652 | "Can not resolv into IPv4/v6 structure.", addr); |
485bc9b9 RS |
653 | return -1; |
654 | } | |
655 | ||
656 | switch(ai->ai_family) { | |
657 | case AF_INET: | |
658 | rpc->fd = socket(ai->ai_family, SOCK_DGRAM, 0); | |
659 | if (rpc->fd == -1) { | |
8907aea9 | 660 | rpc_set_error(rpc, "Failed to create UDP socket: %s", strerror(errno)); |
485bc9b9 RS |
661 | freeaddrinfo(ai); |
662 | return -1; | |
663 | } | |
664 | ||
665 | if (bind(rpc->fd, (struct sockaddr *)ai->ai_addr, sizeof(struct sockaddr_in)) != 0) { | |
8907aea9 | 666 | rpc_set_error(rpc, "Failed to bind to UDP socket: %s",strerror(errno)); |
485bc9b9 RS |
667 | freeaddrinfo(ai); |
668 | return -1; | |
669 | } | |
670 | break; | |
671 | default: | |
672 | rpc_set_error(rpc, "Can not handle UPD sockets of family %d yet", ai->ai_family); | |
673 | freeaddrinfo(ai); | |
674 | return -1; | |
675 | } | |
676 | ||
677 | freeaddrinfo(ai); | |
678 | ||
679 | return 0; | |
680 | } | |
681 | ||
5bf60dc6 RS |
682 | int rpc_set_udp_destination(struct rpc_context *rpc, char *addr, int port, int is_broadcast) |
683 | { | |
684 | struct addrinfo *ai = NULL; | |
685 | char service[6]; | |
686 | ||
4a2b0876 RS |
687 | assert(rpc->magic == RPC_CONTEXT_MAGIC); |
688 | ||
5bf60dc6 RS |
689 | if (rpc->is_udp == 0) { |
690 | rpc_set_error(rpc, "Can not set destination sockaddr. Not UDP context"); | |
691 | return -1; | |
692 | } | |
693 | ||
6874f61e | 694 | sprintf(service, "%d", port); |
5bf60dc6 RS |
695 | if (getaddrinfo(addr, service, NULL, &ai) != 0) { |
696 | rpc_set_error(rpc, "Invalid address:%s. " | |
8907aea9 | 697 | "Can not resolv into IPv4/v6 structure.", addr); |
5bf60dc6 RS |
698 | return -1; |
699 | } | |
700 | ||
701 | if (rpc->udp_dest) { | |
702 | free(rpc->udp_dest); | |
703 | rpc->udp_dest = NULL; | |
704 | } | |
705 | rpc->udp_dest = malloc(ai->ai_addrlen); | |
706 | if (rpc->udp_dest == NULL) { | |
707 | rpc_set_error(rpc, "Out of memory. Failed to allocate sockaddr structure"); | |
be7f5933 | 708 | freeaddrinfo(ai); |
5bf60dc6 RS |
709 | return -1; |
710 | } | |
711 | memcpy(rpc->udp_dest, ai->ai_addr, ai->ai_addrlen); | |
712 | freeaddrinfo(ai); | |
713 | ||
714 | rpc->is_broadcast = is_broadcast; | |
bb4e9ed6 | 715 | setsockopt(rpc->fd, SOL_SOCKET, SO_BROADCAST, (char *)&is_broadcast, sizeof(is_broadcast)); |
5bf60dc6 RS |
716 | |
717 | return 0; | |
718 | } | |
c481da67 RS |
719 | |
720 | struct sockaddr *rpc_get_recv_sockaddr(struct rpc_context *rpc) | |
721 | { | |
4a2b0876 RS |
722 | assert(rpc->magic == RPC_CONTEXT_MAGIC); |
723 | ||
c481da67 RS |
724 | return (struct sockaddr *)&rpc->udp_src; |
725 | } | |
83aa785d RS |
726 | |
727 | int rpc_queue_length(struct rpc_context *rpc) | |
728 | { | |
729 | int i=0; | |
730 | struct rpc_pdu *pdu; | |
731 | ||
4a2b0876 RS |
732 | assert(rpc->magic == RPC_CONTEXT_MAGIC); |
733 | ||
83aa785d RS |
734 | for(pdu = rpc->outqueue; pdu; pdu = pdu->next) { |
735 | i++; | |
736 | } | |
737 | for(pdu = rpc->waitpdu; pdu; pdu = pdu->next) { | |
738 | i++; | |
739 | } | |
740 | return i; | |
741 | } | |
6ec481d3 RS |
742 | |
743 | void rpc_set_fd(struct rpc_context *rpc, int fd) | |
744 | { | |
745 | assert(rpc->magic == RPC_CONTEXT_MAGIC); | |
746 | ||
747 | rpc->fd = fd; | |
748 | } |