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Commit | Line | Data |
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42281ac9 MM |
1 | /* |
2 | * QEMU System Emulator | |
3 | * | |
4 | * Copyright (c) 2003-2008 Fabrice Bellard | |
5 | * | |
6 | * Permission is hereby granted, free of charge, to any person obtaining a copy | |
7 | * of this software and associated documentation files (the "Software"), to deal | |
8 | * in the Software without restriction, including without limitation the rights | |
9 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
10 | * copies of the Software, and to permit persons to whom the Software is | |
11 | * furnished to do so, subject to the following conditions: | |
12 | * | |
13 | * The above copyright notice and this permission notice shall be included in | |
14 | * all copies or substantial portions of the Software. | |
15 | * | |
16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
17 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
19 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
20 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
21 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN | |
22 | * THE SOFTWARE. | |
23 | */ | |
42281ac9 MM |
24 | #include "config-host.h" |
25 | ||
1422e32d | 26 | #include "net/net.h" |
a245fc18 | 27 | #include "clients.h" |
83c9089e | 28 | #include "monitor/monitor.h" |
42281ac9 | 29 | #include "qemu-common.h" |
1de7afc9 PB |
30 | #include "qemu/error-report.h" |
31 | #include "qemu/option.h" | |
32 | #include "qemu/sockets.h" | |
33 | #include "qemu/iov.h" | |
6a1751b7 | 34 | #include "qemu/main-loop.h" |
42281ac9 MM |
35 | |
36 | typedef struct NetSocketState { | |
4e68f7a0 | 37 | NetClientState nc; |
011de2b5 | 38 | int listen_fd; |
42281ac9 MM |
39 | int fd; |
40 | int state; /* 0 = getting length, 1 = getting data */ | |
41 | unsigned int index; | |
42 | unsigned int packet_len; | |
45a7f54a | 43 | unsigned int send_index; /* number of bytes sent (only SOCK_STREAM) */ |
d32fcad3 | 44 | uint8_t buf[NET_BUFSIZE]; |
42281ac9 | 45 | struct sockaddr_in dgram_dst; /* contains inet host and port destination iff connectionless (SOCK_DGRAM) */ |
863f678f SH |
46 | IOHandler *send_fn; /* differs between SOCK_STREAM/SOCK_DGRAM */ |
47 | bool read_poll; /* waiting to receive data? */ | |
48 | bool write_poll; /* waiting to transmit data? */ | |
42281ac9 MM |
49 | } NetSocketState; |
50 | ||
011de2b5 | 51 | static void net_socket_accept(void *opaque); |
863f678f SH |
52 | static void net_socket_writable(void *opaque); |
53 | ||
54 | /* Only read packets from socket when peer can receive them */ | |
55 | static int net_socket_can_send(void *opaque) | |
56 | { | |
57 | NetSocketState *s = opaque; | |
58 | ||
59 | return qemu_can_send_packet(&s->nc); | |
60 | } | |
61 | ||
62 | static void net_socket_update_fd_handler(NetSocketState *s) | |
63 | { | |
64 | qemu_set_fd_handler2(s->fd, | |
65 | s->read_poll ? net_socket_can_send : NULL, | |
66 | s->read_poll ? s->send_fn : NULL, | |
67 | s->write_poll ? net_socket_writable : NULL, | |
68 | s); | |
69 | } | |
70 | ||
71 | static void net_socket_read_poll(NetSocketState *s, bool enable) | |
72 | { | |
73 | s->read_poll = enable; | |
74 | net_socket_update_fd_handler(s); | |
75 | } | |
76 | ||
77 | static void net_socket_write_poll(NetSocketState *s, bool enable) | |
78 | { | |
79 | s->write_poll = enable; | |
80 | net_socket_update_fd_handler(s); | |
81 | } | |
82 | ||
83 | static void net_socket_writable(void *opaque) | |
84 | { | |
85 | NetSocketState *s = opaque; | |
86 | ||
87 | net_socket_write_poll(s, false); | |
88 | ||
89 | qemu_flush_queued_packets(&s->nc); | |
90 | } | |
42281ac9 | 91 | |
4e68f7a0 | 92 | static ssize_t net_socket_receive(NetClientState *nc, const uint8_t *buf, size_t size) |
42281ac9 | 93 | { |
564f63e3 | 94 | NetSocketState *s = DO_UPCAST(NetSocketState, nc, nc); |
45a7f54a SH |
95 | uint32_t len = htonl(size); |
96 | struct iovec iov[] = { | |
97 | { | |
98 | .iov_base = &len, | |
99 | .iov_len = sizeof(len), | |
100 | }, { | |
101 | .iov_base = (void *)buf, | |
102 | .iov_len = size, | |
103 | }, | |
104 | }; | |
105 | size_t remaining; | |
106 | ssize_t ret; | |
42281ac9 | 107 | |
45a7f54a SH |
108 | remaining = iov_size(iov, 2) - s->send_index; |
109 | ret = iov_send(s->fd, iov, 2, s->send_index, remaining); | |
110 | ||
111 | if (ret == -1 && errno == EAGAIN) { | |
112 | ret = 0; /* handled further down */ | |
113 | } | |
114 | if (ret == -1) { | |
115 | s->send_index = 0; | |
116 | return -errno; | |
117 | } | |
118 | if (ret < (ssize_t)remaining) { | |
119 | s->send_index += ret; | |
120 | net_socket_write_poll(s, true); | |
121 | return 0; | |
122 | } | |
123 | s->send_index = 0; | |
124 | return size; | |
42281ac9 MM |
125 | } |
126 | ||
4e68f7a0 | 127 | static ssize_t net_socket_receive_dgram(NetClientState *nc, const uint8_t *buf, size_t size) |
42281ac9 | 128 | { |
564f63e3 | 129 | NetSocketState *s = DO_UPCAST(NetSocketState, nc, nc); |
213fd508 SH |
130 | ssize_t ret; |
131 | ||
132 | do { | |
73062dfe SW |
133 | ret = qemu_sendto(s->fd, buf, size, 0, |
134 | (struct sockaddr *)&s->dgram_dst, | |
135 | sizeof(s->dgram_dst)); | |
213fd508 SH |
136 | } while (ret == -1 && errno == EINTR); |
137 | ||
138 | if (ret == -1 && errno == EAGAIN) { | |
139 | net_socket_write_poll(s, true); | |
140 | return 0; | |
141 | } | |
142 | return ret; | |
42281ac9 MM |
143 | } |
144 | ||
145 | static void net_socket_send(void *opaque) | |
146 | { | |
147 | NetSocketState *s = opaque; | |
148 | int size, err; | |
149 | unsigned l; | |
d32fcad3 | 150 | uint8_t buf1[NET_BUFSIZE]; |
42281ac9 MM |
151 | const uint8_t *buf; |
152 | ||
00aa0040 | 153 | size = qemu_recv(s->fd, buf1, sizeof(buf1), 0); |
42281ac9 MM |
154 | if (size < 0) { |
155 | err = socket_error(); | |
156 | if (err != EWOULDBLOCK) | |
157 | goto eoc; | |
158 | } else if (size == 0) { | |
159 | /* end of connection */ | |
160 | eoc: | |
863f678f SH |
161 | net_socket_read_poll(s, false); |
162 | net_socket_write_poll(s, false); | |
011de2b5 ZYW |
163 | if (s->listen_fd != -1) { |
164 | qemu_set_fd_handler(s->listen_fd, net_socket_accept, NULL, s); | |
165 | } | |
42281ac9 | 166 | closesocket(s->fd); |
011de2b5 ZYW |
167 | |
168 | s->fd = -1; | |
169 | s->state = 0; | |
170 | s->index = 0; | |
171 | s->packet_len = 0; | |
172 | s->nc.link_down = true; | |
173 | memset(s->buf, 0, sizeof(s->buf)); | |
174 | memset(s->nc.info_str, 0, sizeof(s->nc.info_str)); | |
175 | ||
42281ac9 MM |
176 | return; |
177 | } | |
178 | buf = buf1; | |
179 | while (size > 0) { | |
180 | /* reassemble a packet from the network */ | |
181 | switch(s->state) { | |
182 | case 0: | |
183 | l = 4 - s->index; | |
184 | if (l > size) | |
185 | l = size; | |
186 | memcpy(s->buf + s->index, buf, l); | |
187 | buf += l; | |
188 | size -= l; | |
189 | s->index += l; | |
190 | if (s->index == 4) { | |
191 | /* got length */ | |
192 | s->packet_len = ntohl(*(uint32_t *)s->buf); | |
193 | s->index = 0; | |
194 | s->state = 1; | |
195 | } | |
196 | break; | |
197 | case 1: | |
198 | l = s->packet_len - s->index; | |
199 | if (l > size) | |
200 | l = size; | |
201 | if (s->index + l <= sizeof(s->buf)) { | |
202 | memcpy(s->buf + s->index, buf, l); | |
203 | } else { | |
204 | fprintf(stderr, "serious error: oversized packet received," | |
205 | "connection terminated.\n"); | |
206 | s->state = 0; | |
207 | goto eoc; | |
208 | } | |
209 | ||
210 | s->index += l; | |
211 | buf += l; | |
212 | size -= l; | |
213 | if (s->index >= s->packet_len) { | |
564f63e3 | 214 | qemu_send_packet(&s->nc, s->buf, s->packet_len); |
42281ac9 MM |
215 | s->index = 0; |
216 | s->state = 0; | |
217 | } | |
218 | break; | |
219 | } | |
220 | } | |
221 | } | |
222 | ||
223 | static void net_socket_send_dgram(void *opaque) | |
224 | { | |
225 | NetSocketState *s = opaque; | |
226 | int size; | |
227 | ||
00aa0040 | 228 | size = qemu_recv(s->fd, s->buf, sizeof(s->buf), 0); |
42281ac9 MM |
229 | if (size < 0) |
230 | return; | |
231 | if (size == 0) { | |
232 | /* end of connection */ | |
863f678f SH |
233 | net_socket_read_poll(s, false); |
234 | net_socket_write_poll(s, false); | |
42281ac9 MM |
235 | return; |
236 | } | |
564f63e3 | 237 | qemu_send_packet(&s->nc, s->buf, size); |
42281ac9 MM |
238 | } |
239 | ||
3a75e74c | 240 | static int net_socket_mcast_create(struct sockaddr_in *mcastaddr, struct in_addr *localaddr) |
42281ac9 MM |
241 | { |
242 | struct ip_mreq imr; | |
243 | int fd; | |
244 | int val, ret; | |
23ddf2bb B |
245 | #ifdef __OpenBSD__ |
246 | unsigned char loop; | |
247 | #else | |
248 | int loop; | |
249 | #endif | |
250 | ||
42281ac9 | 251 | if (!IN_MULTICAST(ntohl(mcastaddr->sin_addr.s_addr))) { |
842480d4 SH |
252 | fprintf(stderr, "qemu: error: specified mcastaddr \"%s\" (0x%08x) " |
253 | "does not contain a multicast address\n", | |
254 | inet_ntoa(mcastaddr->sin_addr), | |
42281ac9 | 255 | (int)ntohl(mcastaddr->sin_addr.s_addr)); |
842480d4 | 256 | return -1; |
42281ac9 MM |
257 | |
258 | } | |
40ff6d7e | 259 | fd = qemu_socket(PF_INET, SOCK_DGRAM, 0); |
42281ac9 MM |
260 | if (fd < 0) { |
261 | perror("socket(PF_INET, SOCK_DGRAM)"); | |
262 | return -1; | |
263 | } | |
264 | ||
265 | val = 1; | |
9957fc7f | 266 | ret = qemu_setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &val, sizeof(val)); |
42281ac9 | 267 | if (ret < 0) { |
842480d4 SH |
268 | perror("setsockopt(SOL_SOCKET, SO_REUSEADDR)"); |
269 | goto fail; | |
42281ac9 MM |
270 | } |
271 | ||
272 | ret = bind(fd, (struct sockaddr *)mcastaddr, sizeof(*mcastaddr)); | |
273 | if (ret < 0) { | |
274 | perror("bind"); | |
275 | goto fail; | |
276 | } | |
277 | ||
278 | /* Add host to multicast group */ | |
279 | imr.imr_multiaddr = mcastaddr->sin_addr; | |
3a75e74c MR |
280 | if (localaddr) { |
281 | imr.imr_interface = *localaddr; | |
282 | } else { | |
283 | imr.imr_interface.s_addr = htonl(INADDR_ANY); | |
284 | } | |
42281ac9 | 285 | |
9957fc7f SW |
286 | ret = qemu_setsockopt(fd, IPPROTO_IP, IP_ADD_MEMBERSHIP, |
287 | &imr, sizeof(struct ip_mreq)); | |
42281ac9 | 288 | if (ret < 0) { |
842480d4 SH |
289 | perror("setsockopt(IP_ADD_MEMBERSHIP)"); |
290 | goto fail; | |
42281ac9 MM |
291 | } |
292 | ||
293 | /* Force mcast msgs to loopback (eg. several QEMUs in same host */ | |
23ddf2bb | 294 | loop = 1; |
9957fc7f SW |
295 | ret = qemu_setsockopt(fd, IPPROTO_IP, IP_MULTICAST_LOOP, |
296 | &loop, sizeof(loop)); | |
42281ac9 | 297 | if (ret < 0) { |
842480d4 SH |
298 | perror("setsockopt(SOL_IP, IP_MULTICAST_LOOP)"); |
299 | goto fail; | |
42281ac9 MM |
300 | } |
301 | ||
3a75e74c MR |
302 | /* If a bind address is given, only send packets from that address */ |
303 | if (localaddr != NULL) { | |
9957fc7f SW |
304 | ret = qemu_setsockopt(fd, IPPROTO_IP, IP_MULTICAST_IF, |
305 | localaddr, sizeof(*localaddr)); | |
3a75e74c MR |
306 | if (ret < 0) { |
307 | perror("setsockopt(IP_MULTICAST_IF)"); | |
308 | goto fail; | |
309 | } | |
310 | } | |
311 | ||
f9e8cacc | 312 | qemu_set_nonblock(fd); |
42281ac9 MM |
313 | return fd; |
314 | fail: | |
315 | if (fd >= 0) | |
316 | closesocket(fd); | |
317 | return -1; | |
318 | } | |
319 | ||
4e68f7a0 | 320 | static void net_socket_cleanup(NetClientState *nc) |
42281ac9 | 321 | { |
564f63e3 | 322 | NetSocketState *s = DO_UPCAST(NetSocketState, nc, nc); |
011de2b5 | 323 | if (s->fd != -1) { |
863f678f SH |
324 | net_socket_read_poll(s, false); |
325 | net_socket_write_poll(s, false); | |
011de2b5 ZYW |
326 | close(s->fd); |
327 | s->fd = -1; | |
328 | } | |
329 | if (s->listen_fd != -1) { | |
330 | qemu_set_fd_handler(s->listen_fd, NULL, NULL, NULL); | |
331 | closesocket(s->listen_fd); | |
332 | s->listen_fd = -1; | |
333 | } | |
42281ac9 MM |
334 | } |
335 | ||
564f63e3 | 336 | static NetClientInfo net_dgram_socket_info = { |
2be64a68 | 337 | .type = NET_CLIENT_OPTIONS_KIND_SOCKET, |
564f63e3 MM |
338 | .size = sizeof(NetSocketState), |
339 | .receive = net_socket_receive_dgram, | |
340 | .cleanup = net_socket_cleanup, | |
341 | }; | |
342 | ||
4e68f7a0 | 343 | static NetSocketState *net_socket_fd_init_dgram(NetClientState *peer, |
42281ac9 MM |
344 | const char *model, |
345 | const char *name, | |
346 | int fd, int is_connected) | |
347 | { | |
348 | struct sockaddr_in saddr; | |
349 | int newfd; | |
350 | socklen_t saddr_len; | |
4e68f7a0 | 351 | NetClientState *nc; |
42281ac9 MM |
352 | NetSocketState *s; |
353 | ||
354 | /* fd passed: multicast: "learn" dgram_dst address from bound address and save it | |
355 | * Because this may be "shared" socket from a "master" process, datagrams would be recv() | |
356 | * by ONLY ONE process: we must "clone" this dgram socket --jjo | |
357 | */ | |
358 | ||
359 | if (is_connected) { | |
842480d4 SH |
360 | if (getsockname(fd, (struct sockaddr *) &saddr, &saddr_len) == 0) { |
361 | /* must be bound */ | |
362 | if (saddr.sin_addr.s_addr == 0) { | |
363 | fprintf(stderr, "qemu: error: init_dgram: fd=%d unbound, " | |
364 | "cannot setup multicast dst addr\n", fd); | |
e5d1fca0 | 365 | goto err; |
842480d4 SH |
366 | } |
367 | /* clone dgram socket */ | |
368 | newfd = net_socket_mcast_create(&saddr, NULL); | |
369 | if (newfd < 0) { | |
370 | /* error already reported by net_socket_mcast_create() */ | |
e5d1fca0 | 371 | goto err; |
842480d4 SH |
372 | } |
373 | /* clone newfd to fd, close newfd */ | |
374 | dup2(newfd, fd); | |
375 | close(newfd); | |
376 | ||
377 | } else { | |
378 | fprintf(stderr, | |
379 | "qemu: error: init_dgram: fd=%d failed getsockname(): %s\n", | |
380 | fd, strerror(errno)); | |
e5d1fca0 | 381 | goto err; |
842480d4 | 382 | } |
42281ac9 MM |
383 | } |
384 | ||
ab5f3f84 | 385 | nc = qemu_new_net_client(&net_dgram_socket_info, peer, model, name); |
564f63e3 MM |
386 | |
387 | snprintf(nc->info_str, sizeof(nc->info_str), | |
842480d4 SH |
388 | "socket: fd=%d (%s mcast=%s:%d)", |
389 | fd, is_connected ? "cloned" : "", | |
390 | inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port)); | |
564f63e3 MM |
391 | |
392 | s = DO_UPCAST(NetSocketState, nc, nc); | |
393 | ||
42281ac9 | 394 | s->fd = fd; |
011de2b5 | 395 | s->listen_fd = -1; |
863f678f SH |
396 | s->send_fn = net_socket_send_dgram; |
397 | net_socket_read_poll(s, true); | |
42281ac9 MM |
398 | |
399 | /* mcast: save bound address as dst */ | |
e34cde35 ZYW |
400 | if (is_connected) { |
401 | s->dgram_dst = saddr; | |
402 | } | |
42281ac9 | 403 | |
42281ac9 | 404 | return s; |
e5d1fca0 SH |
405 | |
406 | err: | |
407 | closesocket(fd); | |
408 | return NULL; | |
42281ac9 MM |
409 | } |
410 | ||
411 | static void net_socket_connect(void *opaque) | |
412 | { | |
413 | NetSocketState *s = opaque; | |
863f678f SH |
414 | s->send_fn = net_socket_send; |
415 | net_socket_read_poll(s, true); | |
42281ac9 MM |
416 | } |
417 | ||
564f63e3 | 418 | static NetClientInfo net_socket_info = { |
2be64a68 | 419 | .type = NET_CLIENT_OPTIONS_KIND_SOCKET, |
564f63e3 MM |
420 | .size = sizeof(NetSocketState), |
421 | .receive = net_socket_receive, | |
422 | .cleanup = net_socket_cleanup, | |
423 | }; | |
424 | ||
4e68f7a0 | 425 | static NetSocketState *net_socket_fd_init_stream(NetClientState *peer, |
42281ac9 MM |
426 | const char *model, |
427 | const char *name, | |
428 | int fd, int is_connected) | |
429 | { | |
4e68f7a0 | 430 | NetClientState *nc; |
42281ac9 | 431 | NetSocketState *s; |
564f63e3 | 432 | |
ab5f3f84 | 433 | nc = qemu_new_net_client(&net_socket_info, peer, model, name); |
564f63e3 MM |
434 | |
435 | snprintf(nc->info_str, sizeof(nc->info_str), "socket: fd=%d", fd); | |
436 | ||
437 | s = DO_UPCAST(NetSocketState, nc, nc); | |
438 | ||
42281ac9 | 439 | s->fd = fd; |
011de2b5 | 440 | s->listen_fd = -1; |
564f63e3 | 441 | |
20048d0a SH |
442 | /* Disable Nagle algorithm on TCP sockets to reduce latency */ |
443 | socket_set_nodelay(fd); | |
444 | ||
42281ac9 MM |
445 | if (is_connected) { |
446 | net_socket_connect(s); | |
447 | } else { | |
448 | qemu_set_fd_handler(s->fd, NULL, net_socket_connect, s); | |
449 | } | |
450 | return s; | |
451 | } | |
452 | ||
4e68f7a0 | 453 | static NetSocketState *net_socket_fd_init(NetClientState *peer, |
42281ac9 MM |
454 | const char *model, const char *name, |
455 | int fd, int is_connected) | |
456 | { | |
457 | int so_type = -1, optlen=sizeof(so_type); | |
458 | ||
459 | if(getsockopt(fd, SOL_SOCKET, SO_TYPE, (char *)&so_type, | |
460 | (socklen_t *)&optlen)< 0) { | |
842480d4 SH |
461 | fprintf(stderr, "qemu: error: getsockopt(SO_TYPE) for fd=%d failed\n", |
462 | fd); | |
e5d1fca0 | 463 | closesocket(fd); |
842480d4 | 464 | return NULL; |
42281ac9 MM |
465 | } |
466 | switch(so_type) { | |
467 | case SOCK_DGRAM: | |
d33d93b2 | 468 | return net_socket_fd_init_dgram(peer, model, name, fd, is_connected); |
42281ac9 | 469 | case SOCK_STREAM: |
d33d93b2 | 470 | return net_socket_fd_init_stream(peer, model, name, fd, is_connected); |
42281ac9 MM |
471 | default: |
472 | /* who knows ... this could be a eg. a pty, do warn and continue as stream */ | |
473 | fprintf(stderr, "qemu: warning: socket type=%d for fd=%d is not SOCK_DGRAM or SOCK_STREAM\n", so_type, fd); | |
d33d93b2 | 474 | return net_socket_fd_init_stream(peer, model, name, fd, is_connected); |
42281ac9 MM |
475 | } |
476 | return NULL; | |
477 | } | |
478 | ||
479 | static void net_socket_accept(void *opaque) | |
480 | { | |
011de2b5 | 481 | NetSocketState *s = opaque; |
42281ac9 MM |
482 | struct sockaddr_in saddr; |
483 | socklen_t len; | |
484 | int fd; | |
485 | ||
486 | for(;;) { | |
487 | len = sizeof(saddr); | |
011de2b5 | 488 | fd = qemu_accept(s->listen_fd, (struct sockaddr *)&saddr, &len); |
42281ac9 MM |
489 | if (fd < 0 && errno != EINTR) { |
490 | return; | |
491 | } else if (fd >= 0) { | |
011de2b5 | 492 | qemu_set_fd_handler(s->listen_fd, NULL, NULL, NULL); |
42281ac9 MM |
493 | break; |
494 | } | |
495 | } | |
011de2b5 ZYW |
496 | |
497 | s->fd = fd; | |
498 | s->nc.link_down = false; | |
499 | net_socket_connect(s); | |
500 | snprintf(s->nc.info_str, sizeof(s->nc.info_str), | |
501 | "socket: connection from %s:%d", | |
502 | inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port)); | |
42281ac9 MM |
503 | } |
504 | ||
4e68f7a0 | 505 | static int net_socket_listen_init(NetClientState *peer, |
42281ac9 MM |
506 | const char *model, |
507 | const char *name, | |
508 | const char *host_str) | |
509 | { | |
011de2b5 ZYW |
510 | NetClientState *nc; |
511 | NetSocketState *s; | |
42281ac9 | 512 | struct sockaddr_in saddr; |
011de2b5 | 513 | int fd, val, ret; |
42281ac9 MM |
514 | |
515 | if (parse_host_port(&saddr, host_str) < 0) | |
516 | return -1; | |
517 | ||
40ff6d7e | 518 | fd = qemu_socket(PF_INET, SOCK_STREAM, 0); |
42281ac9 MM |
519 | if (fd < 0) { |
520 | perror("socket"); | |
521 | return -1; | |
522 | } | |
f9e8cacc | 523 | qemu_set_nonblock(fd); |
42281ac9 MM |
524 | |
525 | /* allow fast reuse */ | |
526 | val = 1; | |
9957fc7f | 527 | qemu_setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &val, sizeof(val)); |
42281ac9 MM |
528 | |
529 | ret = bind(fd, (struct sockaddr *)&saddr, sizeof(saddr)); | |
530 | if (ret < 0) { | |
531 | perror("bind"); | |
a46667ea | 532 | closesocket(fd); |
42281ac9 MM |
533 | return -1; |
534 | } | |
535 | ret = listen(fd, 0); | |
536 | if (ret < 0) { | |
537 | perror("listen"); | |
a46667ea | 538 | closesocket(fd); |
42281ac9 MM |
539 | return -1; |
540 | } | |
011de2b5 ZYW |
541 | |
542 | nc = qemu_new_net_client(&net_socket_info, peer, model, name); | |
543 | s = DO_UPCAST(NetSocketState, nc, nc); | |
544 | s->fd = -1; | |
545 | s->listen_fd = fd; | |
546 | s->nc.link_down = true; | |
547 | ||
548 | qemu_set_fd_handler(s->listen_fd, net_socket_accept, NULL, s); | |
42281ac9 MM |
549 | return 0; |
550 | } | |
551 | ||
4e68f7a0 | 552 | static int net_socket_connect_init(NetClientState *peer, |
42281ac9 MM |
553 | const char *model, |
554 | const char *name, | |
555 | const char *host_str) | |
556 | { | |
557 | NetSocketState *s; | |
558 | int fd, connected, ret, err; | |
559 | struct sockaddr_in saddr; | |
560 | ||
561 | if (parse_host_port(&saddr, host_str) < 0) | |
562 | return -1; | |
563 | ||
40ff6d7e | 564 | fd = qemu_socket(PF_INET, SOCK_STREAM, 0); |
42281ac9 MM |
565 | if (fd < 0) { |
566 | perror("socket"); | |
567 | return -1; | |
568 | } | |
f9e8cacc | 569 | qemu_set_nonblock(fd); |
42281ac9 MM |
570 | |
571 | connected = 0; | |
572 | for(;;) { | |
573 | ret = connect(fd, (struct sockaddr *)&saddr, sizeof(saddr)); | |
574 | if (ret < 0) { | |
575 | err = socket_error(); | |
576 | if (err == EINTR || err == EWOULDBLOCK) { | |
577 | } else if (err == EINPROGRESS) { | |
578 | break; | |
579 | #ifdef _WIN32 | |
c7eb1f02 | 580 | } else if (err == WSAEALREADY || err == WSAEINVAL) { |
42281ac9 MM |
581 | break; |
582 | #endif | |
583 | } else { | |
584 | perror("connect"); | |
585 | closesocket(fd); | |
586 | return -1; | |
587 | } | |
588 | } else { | |
589 | connected = 1; | |
590 | break; | |
591 | } | |
592 | } | |
d33d93b2 | 593 | s = net_socket_fd_init(peer, model, name, fd, connected); |
42281ac9 MM |
594 | if (!s) |
595 | return -1; | |
564f63e3 | 596 | snprintf(s->nc.info_str, sizeof(s->nc.info_str), |
42281ac9 MM |
597 | "socket: connect to %s:%d", |
598 | inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port)); | |
599 | return 0; | |
600 | } | |
601 | ||
4e68f7a0 | 602 | static int net_socket_mcast_init(NetClientState *peer, |
42281ac9 MM |
603 | const char *model, |
604 | const char *name, | |
3a75e74c MR |
605 | const char *host_str, |
606 | const char *localaddr_str) | |
42281ac9 MM |
607 | { |
608 | NetSocketState *s; | |
609 | int fd; | |
610 | struct sockaddr_in saddr; | |
3a75e74c | 611 | struct in_addr localaddr, *param_localaddr; |
42281ac9 MM |
612 | |
613 | if (parse_host_port(&saddr, host_str) < 0) | |
614 | return -1; | |
615 | ||
3a75e74c MR |
616 | if (localaddr_str != NULL) { |
617 | if (inet_aton(localaddr_str, &localaddr) == 0) | |
618 | return -1; | |
619 | param_localaddr = &localaddr; | |
620 | } else { | |
621 | param_localaddr = NULL; | |
622 | } | |
42281ac9 | 623 | |
3a75e74c | 624 | fd = net_socket_mcast_create(&saddr, param_localaddr); |
42281ac9 | 625 | if (fd < 0) |
842480d4 | 626 | return -1; |
42281ac9 | 627 | |
d33d93b2 | 628 | s = net_socket_fd_init(peer, model, name, fd, 0); |
42281ac9 MM |
629 | if (!s) |
630 | return -1; | |
631 | ||
632 | s->dgram_dst = saddr; | |
633 | ||
564f63e3 | 634 | snprintf(s->nc.info_str, sizeof(s->nc.info_str), |
42281ac9 MM |
635 | "socket: mcast=%s:%d", |
636 | inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port)); | |
637 | return 0; | |
638 | ||
639 | } | |
640 | ||
4e68f7a0 | 641 | static int net_socket_udp_init(NetClientState *peer, |
0e0e7fac B |
642 | const char *model, |
643 | const char *name, | |
644 | const char *rhost, | |
645 | const char *lhost) | |
646 | { | |
647 | NetSocketState *s; | |
648 | int fd, val, ret; | |
649 | struct sockaddr_in laddr, raddr; | |
650 | ||
651 | if (parse_host_port(&laddr, lhost) < 0) { | |
652 | return -1; | |
653 | } | |
654 | ||
655 | if (parse_host_port(&raddr, rhost) < 0) { | |
656 | return -1; | |
657 | } | |
658 | ||
659 | fd = qemu_socket(PF_INET, SOCK_DGRAM, 0); | |
660 | if (fd < 0) { | |
661 | perror("socket(PF_INET, SOCK_DGRAM)"); | |
662 | return -1; | |
663 | } | |
664 | val = 1; | |
9957fc7f SW |
665 | ret = qemu_setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, |
666 | &val, sizeof(val)); | |
0e0e7fac B |
667 | if (ret < 0) { |
668 | perror("setsockopt(SOL_SOCKET, SO_REUSEADDR)"); | |
669 | closesocket(fd); | |
670 | return -1; | |
671 | } | |
672 | ret = bind(fd, (struct sockaddr *)&laddr, sizeof(laddr)); | |
673 | if (ret < 0) { | |
674 | perror("bind"); | |
675 | closesocket(fd); | |
676 | return -1; | |
677 | } | |
fc13fa00 | 678 | qemu_set_nonblock(fd); |
0e0e7fac | 679 | |
d33d93b2 | 680 | s = net_socket_fd_init(peer, model, name, fd, 0); |
0e0e7fac B |
681 | if (!s) { |
682 | return -1; | |
683 | } | |
684 | ||
685 | s->dgram_dst = raddr; | |
686 | ||
687 | snprintf(s->nc.info_str, sizeof(s->nc.info_str), | |
688 | "socket: udp=%s:%d", | |
689 | inet_ntoa(raddr.sin_addr), ntohs(raddr.sin_port)); | |
690 | return 0; | |
691 | } | |
692 | ||
1a0c0958 | 693 | int net_init_socket(const NetClientOptions *opts, const char *name, |
4e68f7a0 | 694 | NetClientState *peer) |
42281ac9 | 695 | { |
bef8e8fe | 696 | const NetdevSocketOptions *sock; |
42281ac9 | 697 | |
bef8e8fe LE |
698 | assert(opts->kind == NET_CLIENT_OPTIONS_KIND_SOCKET); |
699 | sock = opts->socket; | |
42281ac9 | 700 | |
bef8e8fe LE |
701 | if (sock->has_fd + sock->has_listen + sock->has_connect + sock->has_mcast + |
702 | sock->has_udp != 1) { | |
703 | error_report("exactly one of fd=, listen=, connect=, mcast= or udp=" | |
704 | " is required"); | |
705 | return -1; | |
706 | } | |
42281ac9 | 707 | |
bef8e8fe LE |
708 | if (sock->has_localaddr && !sock->has_mcast && !sock->has_udp) { |
709 | error_report("localaddr= is only valid with mcast= or udp="); | |
710 | return -1; | |
711 | } | |
42281ac9 | 712 | |
bef8e8fe LE |
713 | if (sock->has_fd) { |
714 | int fd; | |
42281ac9 | 715 | |
a96ed02f | 716 | fd = monitor_handle_fd_param(cur_mon, sock->fd); |
fc13fa00 SH |
717 | if (fd == -1) { |
718 | return -1; | |
719 | } | |
720 | qemu_set_nonblock(fd); | |
721 | if (!net_socket_fd_init(peer, "socket", name, fd, 1)) { | |
42281ac9 MM |
722 | return -1; |
723 | } | |
bef8e8fe LE |
724 | return 0; |
725 | } | |
42281ac9 | 726 | |
bef8e8fe | 727 | if (sock->has_listen) { |
d33d93b2 | 728 | if (net_socket_listen_init(peer, "socket", name, sock->listen) == -1) { |
42281ac9 MM |
729 | return -1; |
730 | } | |
bef8e8fe LE |
731 | return 0; |
732 | } | |
42281ac9 | 733 | |
bef8e8fe | 734 | if (sock->has_connect) { |
d33d93b2 | 735 | if (net_socket_connect_init(peer, "socket", name, sock->connect) == |
bef8e8fe | 736 | -1) { |
42281ac9 MM |
737 | return -1; |
738 | } | |
bef8e8fe LE |
739 | return 0; |
740 | } | |
42281ac9 | 741 | |
bef8e8fe LE |
742 | if (sock->has_mcast) { |
743 | /* if sock->localaddr is missing, it has been initialized to "all bits | |
744 | * zero" */ | |
d33d93b2 | 745 | if (net_socket_mcast_init(peer, "socket", name, sock->mcast, |
bef8e8fe | 746 | sock->localaddr) == -1) { |
0e0e7fac B |
747 | return -1; |
748 | } | |
bef8e8fe LE |
749 | return 0; |
750 | } | |
0e0e7fac | 751 | |
bef8e8fe LE |
752 | assert(sock->has_udp); |
753 | if (!sock->has_localaddr) { | |
754 | error_report("localaddr= is mandatory with udp="); | |
755 | return -1; | |
756 | } | |
f0e3ac70 | 757 | if (net_socket_udp_init(peer, "socket", name, sock->udp, sock->localaddr) == |
bef8e8fe | 758 | -1) { |
42281ac9 MM |
759 | return -1; |
760 | } | |
42281ac9 MM |
761 | return 0; |
762 | } |