source: mainline/uspace/srv/net/udp/sock.c@ 7719958

lfn serial ticket/834-toolchain-update topic/msim-upgrade topic/simplify-dev-export
Last change on this file since 7719958 was 0d520a2, checked in by Jiri Svoboda <jiri@…>, 14 years ago

tcp_sock_connection() and udp_sock_connection() need to clean up when exiting.
  • Property mode set to 100644
File size: 14.6 KB
Line 
1/*
2 * Copyright (c) 2008 Lukas Mejdrech
3 * Copyright (c) 2012 Jiri Svoboda
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 *
10 * - Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * - Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * - The name of the author may not be used to endorse or promote products
16 * derived from this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 */
29
30/** @addtogroup udp
31 * @{
32 */
33
34/**
35 * @file Socket provider
36 */
37
38#include <async.h>
39#include <byteorder.h>
40#include <errno.h>
41#include <inet/inet.h>
42#include <io/log.h>
43#include <ipc/services.h>
44#include <ipc/socket.h>
45#include <net/modules.h>
46#include <net/socket.h>
47#include <ns.h>
48
49#include "sock.h"
50#include "std.h"
51#include "udp_type.h"
52#include "ucall.h"
53
54#define FRAGMENT_SIZE 1024
55
56/** Free ports pool start. */
57#define UDP_FREE_PORTS_START 1025
58
59/** Free ports pool end. */
60#define UDP_FREE_PORTS_END 65535
61
62static int last_used_port = UDP_FREE_PORTS_START - 1;
63static socket_ports_t gsock;
64
65static void udp_sock_connection(ipc_callid_t iid, ipc_call_t *icall, void *arg);
66
67int udp_sock_init(void)
68{
69 int rc;
70
71 socket_ports_initialize(&gsock);
72
73 async_set_client_connection(udp_sock_connection);
74
75 rc = service_register(SERVICE_UDP);
76 if (rc != EOK)
77 return EEXIST;
78
79 return EOK;
80}
81
82static void udp_free_sock_data(socket_core_t *sock_core)
83{
84 udp_sockdata_t *socket;
85
86 socket = (udp_sockdata_t *)sock_core->specific_data;
87 assert(socket->assoc != NULL);
88 udp_uc_destroy(socket->assoc);
89}
90
91static void udp_sock_notify_data(socket_core_t *sock_core)
92{
93 log_msg(LVL_DEBUG, "udp_sock_notify_data(%d)", sock_core->socket_id);
94 async_exch_t *exch = async_exchange_begin(sock_core->sess);
95 async_msg_5(exch, NET_SOCKET_RECEIVED, (sysarg_t)sock_core->socket_id,
96 FRAGMENT_SIZE, 0, 0, 1);
97 async_exchange_end(exch);
98}
99
100static void udp_sock_socket(udp_client_t *client, ipc_callid_t callid, ipc_call_t call)
101{
102 udp_sockdata_t *sock;
103 socket_core_t *sock_core;
104 int sock_id;
105 int rc;
106 ipc_call_t answer;
107
108 log_msg(LVL_DEBUG, "udp_sock_socket()");
109 sock = calloc(sizeof(udp_sockdata_t), 1);
110 if (sock == NULL) {
111 async_answer_0(callid, ENOMEM);
112 return;
113 }
114
115 fibril_mutex_initialize(&sock->lock);
116 sock->client = client;
117
118 rc = udp_uc_create(&sock->assoc);
119 if (rc != EOK) {
120 udp_uc_destroy(sock->assoc);
121 free(sock);
122 async_answer_0(callid, rc);
123 return;
124 }
125
126 sock_id = SOCKET_GET_SOCKET_ID(call);
127 rc = socket_create(&client->sockets, client->sess, sock, &sock_id);
128 if (rc != EOK) {
129 async_answer_0(callid, rc);
130 return;
131 }
132
133 sock_core = socket_cores_find(&client->sockets, sock_id);
134 assert(sock_core != NULL);
135 sock->sock_core = sock_core;
136
137
138 refresh_answer(&answer, NULL);
139 SOCKET_SET_SOCKET_ID(answer, sock_id);
140
141 SOCKET_SET_DATA_FRAGMENT_SIZE(answer, FRAGMENT_SIZE);
142 SOCKET_SET_HEADER_SIZE(answer, sizeof(udp_header_t));
143 answer_call(callid, EOK, &answer, 3);
144}
145
146static void udp_sock_bind(udp_client_t *client, ipc_callid_t callid, ipc_call_t call)
147{
148 int rc;
149 struct sockaddr_in *addr;
150 size_t addr_size;
151 socket_core_t *sock_core;
152 udp_sockdata_t *socket;
153 udp_sock_t fsock;
154 udp_error_t urc;
155
156 log_msg(LVL_DEBUG, "udp_sock_bind()");
157 log_msg(LVL_DEBUG, " - async_data_write_accept");
158
159 addr = NULL;
160
161 rc = async_data_write_accept((void **) &addr, false, 0, 0, 0, &addr_size);
162 if (rc != EOK) {
163 async_answer_0(callid, rc);
164 goto out;
165 }
166
167 log_msg(LVL_DEBUG, " - call socket_bind");
168 rc = socket_bind(&client->sockets, &gsock, SOCKET_GET_SOCKET_ID(call),
169 addr, addr_size, UDP_FREE_PORTS_START, UDP_FREE_PORTS_END,
170 last_used_port);
171 if (rc != EOK) {
172 async_answer_0(callid, rc);
173 goto out;
174 }
175
176 if (addr_size != sizeof(struct sockaddr_in)) {
177 async_answer_0(callid, EINVAL);
178 goto out;
179 }
180
181 log_msg(LVL_DEBUG, " - call socket_cores_find");
182 sock_core = socket_cores_find(&client->sockets, SOCKET_GET_SOCKET_ID(call));
183 if (sock_core == NULL) {
184 async_answer_0(callid, ENOENT);
185 goto out;
186 }
187
188 socket = (udp_sockdata_t *)sock_core->specific_data;
189
190 fsock.addr.ipv4 = uint32_t_be2host(addr->sin_addr.s_addr);
191 fsock.port = sock_core->port;
192 urc = udp_uc_set_local(socket->assoc, &fsock);
193
194 switch (urc) {
195 case UDP_EOK:
196 rc = EOK;
197 break;
198/* case TCP_ENOTEXIST:
199 rc = ENOTCONN;
200 break;
201 case TCP_ECLOSING:
202 rc = ENOTCONN;
203 break;
204 case TCP_ERESET:
205 rc = ECONNABORTED;
206 break;*/
207 default:
208 assert(false);
209 }
210
211 udp_sock_notify_data(sock_core);
212
213 log_msg(LVL_DEBUG, " - success");
214 async_answer_0(callid, rc);
215out:
216 if (addr != NULL)
217 free(addr);
218}
219
220static void udp_sock_listen(udp_client_t *client, ipc_callid_t callid, ipc_call_t call)
221{
222 log_msg(LVL_DEBUG, "udp_sock_listen()");
223 async_answer_0(callid, ENOTSUP);
224}
225
226static void udp_sock_connect(udp_client_t *client, ipc_callid_t callid, ipc_call_t call)
227{
228 log_msg(LVL_DEBUG, "udp_sock_connect()");
229 async_answer_0(callid, ENOTSUP);
230}
231
232static void udp_sock_accept(udp_client_t *client, ipc_callid_t callid, ipc_call_t call)
233{
234 log_msg(LVL_DEBUG, "udp_sock_accept()");
235 async_answer_0(callid, ENOTSUP);
236}
237
238static void udp_sock_sendto(udp_client_t *client, ipc_callid_t callid, ipc_call_t call)
239{
240 int socket_id;
241 int fragments;
242 int index;
243 struct sockaddr_in *addr;
244 size_t addr_size;
245 socket_core_t *sock_core;
246 udp_sockdata_t *socket;
247 udp_sock_t fsock, *fsockp;
248 ipc_call_t answer;
249 ipc_callid_t wcallid;
250 size_t length;
251 uint8_t buffer[FRAGMENT_SIZE];
252 udp_error_t urc;
253 int rc;
254
255 log_msg(LVL_DEBUG, "udp_sock_send()");
256
257 addr = NULL;
258
259 if (IPC_GET_IMETHOD(call) == NET_SOCKET_SENDTO) {
260 rc = async_data_write_accept((void **) &addr, false,
261 0, 0, 0, &addr_size);
262 if (rc != EOK) {
263 async_answer_0(callid, rc);
264 goto out;
265 }
266
267 if (addr_size != sizeof(struct sockaddr_in)) {
268 async_answer_0(callid, EINVAL);
269 goto out;
270 }
271
272 fsock.addr.ipv4 = uint32_t_be2host(addr->sin_addr.s_addr);
273 fsock.port = uint16_t_be2host(addr->sin_port);
274 fsockp = &fsock;
275 } else {
276 fsockp = NULL;
277 }
278
279 socket_id = SOCKET_GET_SOCKET_ID(call);
280 fragments = SOCKET_GET_DATA_FRAGMENTS(call);
281 SOCKET_GET_FLAGS(call);
282
283 sock_core = socket_cores_find(&client->sockets, socket_id);
284 if (sock_core == NULL) {
285 async_answer_0(callid, ENOTSOCK);
286 goto out;
287 }
288
289 if (sock_core->port == 0) {
290 /* Implicitly bind socket to port */
291 rc = socket_bind(&client->sockets, &gsock, SOCKET_GET_SOCKET_ID(call),
292 addr, addr_size, UDP_FREE_PORTS_START, UDP_FREE_PORTS_END,
293 last_used_port);
294 if (rc != EOK) {
295 async_answer_0(callid, rc);
296 goto out;
297 }
298
299 udp_sock_notify_data(sock_core);
300 }
301
302 socket = (udp_sockdata_t *)sock_core->specific_data;
303 fibril_mutex_lock(&socket->lock);
304
305 if (socket->assoc->ident.local.addr.ipv4 == UDP_IPV4_ANY) {
306 /* Determine local IP address */
307 inet_addr_t loc_addr, rem_addr;
308
309 rem_addr.ipv4 = fsockp ? fsock.addr.ipv4 :
310 socket->assoc->ident.foreign.addr.ipv4;
311
312 rc = inet_get_srcaddr(&rem_addr, 0, &loc_addr);
313 if (rc != EOK) {
314 fibril_mutex_unlock(&socket->lock);
315 async_answer_0(callid, rc);
316 log_msg(LVL_DEBUG, "udp_sock_sendto: Failed to "
317 "determine local address.");
318 return;
319 }
320
321 socket->assoc->ident.local.addr.ipv4 = loc_addr.ipv4;
322 log_msg(LVL_DEBUG, "Local IP address is %x",
323 socket->assoc->ident.local.addr.ipv4);
324 }
325
326
327 assert(socket->assoc != NULL);
328
329 for (index = 0; index < fragments; index++) {
330 if (!async_data_write_receive(&wcallid, &length)) {
331 fibril_mutex_unlock(&socket->lock);
332 async_answer_0(callid, EINVAL);
333 goto out;
334 }
335
336 if (length > FRAGMENT_SIZE)
337 length = FRAGMENT_SIZE;
338
339 rc = async_data_write_finalize(wcallid, buffer, length);
340 if (rc != EOK) {
341 fibril_mutex_unlock(&socket->lock);
342 async_answer_0(callid, rc);
343 goto out;
344 }
345
346 urc = udp_uc_send(socket->assoc, fsockp, buffer, length, 0);
347
348 switch (urc) {
349 case UDP_EOK:
350 rc = EOK;
351 break;
352/* case TCP_ENOTEXIST:
353 rc = ENOTCONN;
354 break;
355 case TCP_ECLOSING:
356 rc = ENOTCONN;
357 break;
358 case TCP_ERESET:
359 rc = ECONNABORTED;
360 break;*/
361 default:
362 assert(false);
363 }
364
365 if (rc != EOK) {
366 fibril_mutex_unlock(&socket->lock);
367 async_answer_0(callid, rc);
368 goto out;
369 }
370 }
371
372 refresh_answer(&answer, NULL);
373 SOCKET_SET_DATA_FRAGMENT_SIZE(answer, FRAGMENT_SIZE);
374 answer_call(callid, EOK, &answer, 2);
375 fibril_mutex_unlock(&socket->lock);
376out:
377 if (addr != NULL)
378 free(addr);
379}
380
381static void udp_sock_recvfrom(udp_client_t *client, ipc_callid_t callid, ipc_call_t call)
382{
383 int socket_id;
384 int flags;
385 size_t addr_length, length;
386 socket_core_t *sock_core;
387 udp_sockdata_t *socket;
388 ipc_call_t answer;
389 ipc_callid_t rcallid;
390 uint8_t buffer[FRAGMENT_SIZE];
391 size_t data_len;
392 xflags_t xflags;
393 udp_error_t urc;
394 struct sockaddr_in addr;
395 udp_sock_t rsock;
396 int rc;
397
398 log_msg(LVL_DEBUG, "%p: udp_sock_recv[from]()", client);
399
400 socket_id = SOCKET_GET_SOCKET_ID(call);
401 flags = SOCKET_GET_FLAGS(call);
402
403 sock_core = socket_cores_find(&client->sockets, socket_id);
404 if (sock_core == NULL) {
405 async_answer_0(callid, ENOTSOCK);
406 return;
407 }
408
409 socket = (udp_sockdata_t *)sock_core->specific_data;
410 fibril_mutex_lock(&socket->lock);
411
412 if (socket->assoc == NULL) {
413 fibril_mutex_unlock(&socket->lock);
414 async_answer_0(callid, ENOTCONN);
415 return;
416 }
417
418 (void)flags;
419
420 urc = udp_uc_receive(socket->assoc, buffer, FRAGMENT_SIZE, &data_len,
421 &xflags, &rsock);
422 log_msg(LVL_DEBUG, "**** udp_uc_receive done, data_len=%zu", data_len);
423
424 switch (urc) {
425 case UDP_EOK:
426 rc = EOK;
427 break;
428/* case TCP_ENOTEXIST:
429 case TCP_ECLOSING:
430 rc = ENOTCONN;
431 break;
432 case TCP_ERESET:
433 rc = ECONNABORTED;
434 break;*/
435 default:
436 assert(false);
437 }
438
439 log_msg(LVL_DEBUG, "**** udp_uc_receive -> %d", rc);
440 if (rc != EOK) {
441 fibril_mutex_unlock(&socket->lock);
442 async_answer_0(callid, rc);
443 return;
444 }
445
446 if (IPC_GET_IMETHOD(call) == NET_SOCKET_RECVFROM) {
447 /* Fill addr */
448 addr.sin_family = AF_INET;
449 addr.sin_addr.s_addr = host2uint32_t_be(rsock.addr.ipv4);
450 addr.sin_port = host2uint16_t_be(rsock.port);
451
452 log_msg(LVL_DEBUG, "addr read receive");
453 if (!async_data_read_receive(&rcallid, &addr_length)) {
454 fibril_mutex_unlock(&socket->lock);
455 async_answer_0(callid, EINVAL);
456 return;
457 }
458
459 if (addr_length > sizeof(addr))
460 addr_length = sizeof(addr);
461
462 log_msg(LVL_DEBUG, "addr read finalize");
463 rc = async_data_read_finalize(rcallid, &addr, addr_length);
464 if (rc != EOK) {
465 fibril_mutex_unlock(&socket->lock);
466 async_answer_0(callid, EINVAL);
467 return;
468 }
469 }
470
471 log_msg(LVL_DEBUG, "data read receive");
472 if (!async_data_read_receive(&rcallid, &length)) {
473 fibril_mutex_unlock(&socket->lock);
474 async_answer_0(callid, EINVAL);
475 return;
476 }
477
478 if (length > data_len)
479 length = data_len;
480
481 log_msg(LVL_DEBUG, "data read finalize");
482 rc = async_data_read_finalize(rcallid, buffer, length);
483
484 if (length < data_len && rc == EOK)
485 rc = EOVERFLOW;
486
487 log_msg(LVL_DEBUG, "read_data_length <- %zu", length);
488 SOCKET_SET_READ_DATA_LENGTH(answer, length);
489 SOCKET_SET_ADDRESS_LENGTH(answer, sizeof(addr));
490 answer_call(callid, EOK, &answer, 3);
491
492 /* Push one fragment notification to client's queue */
493 udp_sock_notify_data(sock_core);
494 fibril_mutex_unlock(&socket->lock);
495}
496
497static void udp_sock_close(udp_client_t *client, ipc_callid_t callid, ipc_call_t call)
498{
499 int socket_id;
500 socket_core_t *sock_core;
501 udp_sockdata_t *socket;
502 int rc;
503
504 log_msg(LVL_DEBUG, "tcp_sock_close()");
505 socket_id = SOCKET_GET_SOCKET_ID(call);
506
507 sock_core = socket_cores_find(&client->sockets, socket_id);
508 if (sock_core == NULL) {
509 async_answer_0(callid, ENOTSOCK);
510 return;
511 }
512
513 socket = (udp_sockdata_t *)sock_core->specific_data;
514 fibril_mutex_lock(&socket->lock);
515
516 rc = socket_destroy(NULL, socket_id, &client->sockets, &gsock,
517 udp_free_sock_data);
518 if (rc != EOK) {
519 fibril_mutex_unlock(&socket->lock);
520 async_answer_0(callid, rc);
521 return;
522 }
523
524 fibril_mutex_unlock(&socket->lock);
525 async_answer_0(callid, EOK);
526}
527
528static void udp_sock_getsockopt(udp_client_t *client, ipc_callid_t callid, ipc_call_t call)
529{
530 log_msg(LVL_DEBUG, "udp_sock_getsockopt()");
531 async_answer_0(callid, ENOTSUP);
532}
533
534static void udp_sock_setsockopt(udp_client_t *client, ipc_callid_t callid, ipc_call_t call)
535{
536 log_msg(LVL_DEBUG, "udp_sock_setsockopt()");
537 async_answer_0(callid, ENOTSUP);
538}
539
540static void udp_sock_connection(ipc_callid_t iid, ipc_call_t *icall, void *arg)
541{
542 ipc_callid_t callid;
543 ipc_call_t call;
544 udp_client_t client;
545
546 /* Accept the connection */
547 async_answer_0(iid, EOK);
548
549 client.sess = async_callback_receive(EXCHANGE_SERIALIZE);
550 socket_cores_initialize(&client.sockets);
551
552 while (true) {
553 log_msg(LVL_DEBUG, "udp_sock_connection: wait");
554 callid = async_get_call(&call);
555 if (!IPC_GET_IMETHOD(call))
556 break;
557
558 log_msg(LVL_DEBUG, "udp_sock_connection: METHOD=%d",
559 (int)IPC_GET_IMETHOD(call));
560
561 switch (IPC_GET_IMETHOD(call)) {
562 case NET_SOCKET:
563 udp_sock_socket(&client, callid, call);
564 break;
565 case NET_SOCKET_BIND:
566 udp_sock_bind(&client, callid, call);
567 break;
568 case NET_SOCKET_LISTEN:
569 udp_sock_listen(&client, callid, call);
570 break;
571 case NET_SOCKET_CONNECT:
572 udp_sock_connect(&client, callid, call);
573 break;
574 case NET_SOCKET_ACCEPT:
575 udp_sock_accept(&client, callid, call);
576 break;
577 case NET_SOCKET_SEND:
578 case NET_SOCKET_SENDTO:
579 udp_sock_sendto(&client, callid, call);
580 break;
581 case NET_SOCKET_RECV:
582 case NET_SOCKET_RECVFROM:
583 udp_sock_recvfrom(&client, callid, call);
584 break;
585 case NET_SOCKET_CLOSE:
586 udp_sock_close(&client, callid, call);
587 break;
588 case NET_SOCKET_GETSOCKOPT:
589 udp_sock_getsockopt(&client, callid, call);
590 break;
591 case NET_SOCKET_SETSOCKOPT:
592 udp_sock_setsockopt(&client, callid, call);
593 break;
594 default:
595 async_answer_0(callid, ENOTSUP);
596 break;
597 }
598 }
599
600 /* Clean up */
601 log_msg(LVL_DEBUG, "udp_sock_connection: Clean up");
602 async_hangup(client.sess);
603 socket_cores_release(NULL, &client.sockets, &gsock, udp_free_sock_data);
604}
605
606/**
607 * @}
608 */
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