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Commit | Line | Data |
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305b0eb2 AL |
1 | /* |
2 | * inet and unix socket functions for qemu | |
3 | * | |
4 | * (c) 2008 Gerd Hoffmann <kraxel@redhat.com> | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation; under version 2 of the License. | |
9 | * | |
10 | * This program is distributed in the hope that it will be useful, | |
11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
13 | * GNU General Public License for more details. | |
e6d91ab6 PB |
14 | * |
15 | * Contributions after 2012-01-13 are licensed under the terms of the | |
16 | * GNU GPL, version 2 or (at your option) any later version. | |
305b0eb2 | 17 | */ |
aafd7584 | 18 | #include "qemu/osdep.h" |
d247d25f | 19 | |
6a02c806 SH |
20 | #ifdef CONFIG_AF_VSOCK |
21 | #include <linux/vm_sockets.h> | |
22 | #endif /* CONFIG_AF_VSOCK */ | |
23 | ||
83c9089e | 24 | #include "monitor/monitor.h" |
da34e65c | 25 | #include "qapi/error.h" |
1de7afc9 | 26 | #include "qemu/sockets.h" |
1de7afc9 | 27 | #include "qemu/main-loop.h" |
b3db211f DB |
28 | #include "qapi/qobject-input-visitor.h" |
29 | #include "qapi/qobject-output-visitor.h" | |
2a8e21c7 | 30 | #include "qapi-visit.h" |
f348b6d1 | 31 | #include "qemu/cutils.h" |
d247d25f AL |
32 | |
33 | #ifndef AI_ADDRCONFIG | |
34 | # define AI_ADDRCONFIG 0 | |
35 | #endif | |
340849a9 | 36 | |
3de3d698 WB |
37 | #ifndef AI_V4MAPPED |
38 | # define AI_V4MAPPED 0 | |
39 | #endif | |
d247d25f | 40 | |
2af2bf67 | 41 | |
d247d25f AL |
42 | static int inet_getport(struct addrinfo *e) |
43 | { | |
44 | struct sockaddr_in *i4; | |
45 | struct sockaddr_in6 *i6; | |
46 | ||
47 | switch (e->ai_family) { | |
48 | case PF_INET6: | |
49 | i6 = (void*)e->ai_addr; | |
50 | return ntohs(i6->sin6_port); | |
51 | case PF_INET: | |
52 | i4 = (void*)e->ai_addr; | |
53 | return ntohs(i4->sin_port); | |
54 | default: | |
55 | return 0; | |
56 | } | |
57 | } | |
58 | ||
59 | static void inet_setport(struct addrinfo *e, int port) | |
60 | { | |
61 | struct sockaddr_in *i4; | |
62 | struct sockaddr_in6 *i6; | |
63 | ||
64 | switch (e->ai_family) { | |
65 | case PF_INET6: | |
66 | i6 = (void*)e->ai_addr; | |
67 | i6->sin6_port = htons(port); | |
68 | break; | |
69 | case PF_INET: | |
70 | i4 = (void*)e->ai_addr; | |
71 | i4->sin_port = htons(port); | |
72 | break; | |
73 | } | |
74 | } | |
75 | ||
a589569f WX |
76 | NetworkAddressFamily inet_netfamily(int family) |
77 | { | |
78 | switch (family) { | |
79 | case PF_INET6: return NETWORK_ADDRESS_FAMILY_IPV6; | |
80 | case PF_INET: return NETWORK_ADDRESS_FAMILY_IPV4; | |
81 | case PF_UNIX: return NETWORK_ADDRESS_FAMILY_UNIX; | |
6a02c806 SH |
82 | #ifdef CONFIG_AF_VSOCK |
83 | case PF_VSOCK: return NETWORK_ADDRESS_FAMILY_VSOCK; | |
84 | #endif /* CONFIG_AF_VSOCK */ | |
a589569f WX |
85 | } |
86 | return NETWORK_ADDRESS_FAMILY_UNKNOWN; | |
87 | } | |
88 | ||
1856835d DB |
89 | /* |
90 | * Matrix we're trying to apply | |
91 | * | |
92 | * ipv4 ipv6 family | |
93 | * - - PF_UNSPEC | |
94 | * - f PF_INET | |
95 | * - t PF_INET6 | |
96 | * f - PF_INET6 | |
97 | * f f <error> | |
98 | * f t PF_INET6 | |
99 | * t - PF_INET | |
100 | * t f PF_INET | |
101 | * t t PF_INET6 | |
102 | * | |
d43eda3d | 103 | * NB, this matrix is only about getting the necessary results |
1856835d DB |
104 | * from getaddrinfo(). Some of the cases require further work |
105 | * after reading results from getaddrinfo in order to fully | |
106 | * apply the logic the end user wants. eg with the last case | |
107 | * ipv4=t + ipv6=t + PF_INET6, getaddrinfo alone can only | |
108 | * guarantee the ipv6=t part of the request - we need more | |
109 | * checks to provide ipv4=t part of the guarantee. This is | |
110 | * outside scope of this method and not currently handled by | |
111 | * callers at all. | |
112 | */ | |
113 | static int inet_ai_family_from_address(InetSocketAddress *addr, | |
114 | Error **errp) | |
115 | { | |
116 | if (addr->has_ipv6 && addr->has_ipv4 && | |
117 | !addr->ipv6 && !addr->ipv4) { | |
118 | error_setg(errp, "Cannot disable IPv4 and IPv6 at same time"); | |
119 | return PF_UNSPEC; | |
120 | } | |
121 | if ((addr->has_ipv6 && addr->ipv6) || (addr->has_ipv4 && !addr->ipv4)) { | |
122 | return PF_INET6; | |
123 | } | |
124 | if ((addr->has_ipv4 && addr->ipv4) || (addr->has_ipv6 && !addr->ipv6)) { | |
125 | return PF_INET; | |
126 | } | |
127 | return PF_UNSPEC; | |
128 | } | |
129 | ||
130 | static int inet_listen_saddr(InetSocketAddress *saddr, | |
131 | int port_offset, | |
132 | bool update_addr, | |
133 | Error **errp) | |
d247d25f AL |
134 | { |
135 | struct addrinfo ai,*res,*e; | |
d247d25f AL |
136 | char port[33]; |
137 | char uaddr[INET6_ADDRSTRLEN+1]; | |
138 | char uport[33]; | |
1856835d DB |
139 | int slisten, rc, port_min, port_max, p; |
140 | Error *err = NULL; | |
d247d25f AL |
141 | |
142 | memset(&ai,0, sizeof(ai)); | |
3de3d698 | 143 | ai.ai_flags = AI_PASSIVE; |
1856835d | 144 | ai.ai_family = inet_ai_family_from_address(saddr, &err); |
e5bc776f | 145 | ai.ai_socktype = SOCK_STREAM; |
d247d25f | 146 | |
1856835d DB |
147 | if (err) { |
148 | error_propagate(errp, err); | |
149 | return -1; | |
150 | } | |
151 | ||
152 | if (saddr->host == NULL) { | |
0983f5e6 | 153 | error_setg(errp, "host not specified"); |
e5bc776f | 154 | return -1; |
d247d25f | 155 | } |
1856835d DB |
156 | if (saddr->port != NULL) { |
157 | pstrcpy(port, sizeof(port), saddr->port); | |
0983f5e6 DB |
158 | } else { |
159 | port[0] = '\0'; | |
160 | } | |
d247d25f AL |
161 | |
162 | /* lookup */ | |
8bc89127 GH |
163 | if (port_offset) { |
164 | unsigned long long baseport; | |
0983f5e6 DB |
165 | if (strlen(port) == 0) { |
166 | error_setg(errp, "port not specified"); | |
167 | return -1; | |
168 | } | |
8bc89127 GH |
169 | if (parse_uint_full(port, &baseport, 10) < 0) { |
170 | error_setg(errp, "can't convert to a number: %s", port); | |
171 | return -1; | |
172 | } | |
173 | if (baseport > 65535 || | |
174 | baseport + port_offset > 65535) { | |
175 | error_setg(errp, "port %s out of range", port); | |
176 | return -1; | |
177 | } | |
178 | snprintf(port, sizeof(port), "%d", (int)baseport + port_offset); | |
179 | } | |
1856835d | 180 | rc = getaddrinfo(strlen(saddr->host) ? saddr->host : NULL, |
0983f5e6 | 181 | strlen(port) ? port : NULL, &ai, &res); |
d247d25f | 182 | if (rc != 0) { |
1856835d DB |
183 | error_setg(errp, "address resolution failed for %s:%s: %s", |
184 | saddr->host, port, gai_strerror(rc)); | |
d247d25f AL |
185 | return -1; |
186 | } | |
d247d25f AL |
187 | |
188 | /* create socket + bind */ | |
189 | for (e = res; e != NULL; e = e->ai_next) { | |
39b6efc8 VS |
190 | getnameinfo((struct sockaddr*)e->ai_addr,e->ai_addrlen, |
191 | uaddr,INET6_ADDRSTRLEN,uport,32, | |
192 | NI_NUMERICHOST | NI_NUMERICSERV); | |
40ff6d7e | 193 | slisten = qemu_socket(e->ai_family, e->ai_socktype, e->ai_protocol); |
39b6efc8 | 194 | if (slisten < 0) { |
029409e5 | 195 | if (!e->ai_next) { |
235256a2 | 196 | error_setg_errno(errp, errno, "Failed to create socket"); |
029409e5 | 197 | } |
39b6efc8 VS |
198 | continue; |
199 | } | |
d247d25f | 200 | |
04fd1c78 | 201 | socket_set_fast_reuse(slisten); |
d247d25f AL |
202 | #ifdef IPV6_V6ONLY |
203 | if (e->ai_family == PF_INET6) { | |
204 | /* listen on both ipv4 and ipv6 */ | |
f9b5426f | 205 | const int off = 0; |
9957fc7f SW |
206 | qemu_setsockopt(slisten, IPPROTO_IPV6, IPV6_V6ONLY, &off, |
207 | sizeof(off)); | |
d247d25f AL |
208 | } |
209 | #endif | |
210 | ||
877691f9 | 211 | port_min = inet_getport(e); |
1856835d | 212 | port_max = saddr->has_to ? saddr->to + port_offset : port_min; |
877691f9 MA |
213 | for (p = port_min; p <= port_max; p++) { |
214 | inet_setport(e, p); | |
d247d25f | 215 | if (bind(slisten, e->ai_addr, e->ai_addrlen) == 0) { |
d247d25f AL |
216 | goto listen; |
217 | } | |
877691f9 | 218 | if (p == port_max) { |
029409e5 | 219 | if (!e->ai_next) { |
235256a2 | 220 | error_setg_errno(errp, errno, "Failed to bind socket"); |
029409e5 | 221 | } |
d247d25f | 222 | } |
d247d25f AL |
223 | } |
224 | closesocket(slisten); | |
225 | } | |
d247d25f AL |
226 | freeaddrinfo(res); |
227 | return -1; | |
228 | ||
229 | listen: | |
230 | if (listen(slisten,1) != 0) { | |
235256a2 | 231 | error_setg_errno(errp, errno, "Failed to listen on socket"); |
d247d25f | 232 | closesocket(slisten); |
39b6efc8 | 233 | freeaddrinfo(res); |
d247d25f AL |
234 | return -1; |
235 | } | |
1856835d DB |
236 | if (update_addr) { |
237 | g_free(saddr->host); | |
238 | saddr->host = g_strdup(uaddr); | |
239 | g_free(saddr->port); | |
240 | saddr->port = g_strdup_printf("%d", | |
241 | inet_getport(e) - port_offset); | |
242 | saddr->has_ipv6 = saddr->ipv6 = e->ai_family == PF_INET6; | |
243 | saddr->has_ipv4 = saddr->ipv4 = e->ai_family != PF_INET6; | |
244 | } | |
d247d25f AL |
245 | freeaddrinfo(res); |
246 | return slisten; | |
247 | } | |
248 | ||
05bc1d8a MT |
249 | #ifdef _WIN32 |
250 | #define QEMU_SOCKET_RC_INPROGRESS(rc) \ | |
251 | ((rc) == -EINPROGRESS || (rc) == -EWOULDBLOCK || (rc) == -WSAEALREADY) | |
252 | #else | |
253 | #define QEMU_SOCKET_RC_INPROGRESS(rc) \ | |
254 | ((rc) == -EINPROGRESS) | |
255 | #endif | |
256 | ||
233aa5c2 OW |
257 | /* Struct to store connect state for non blocking connect */ |
258 | typedef struct ConnectState { | |
259 | int fd; | |
260 | struct addrinfo *addr_list; | |
261 | struct addrinfo *current_addr; | |
262 | NonBlockingConnectHandler *callback; | |
263 | void *opaque; | |
264 | } ConnectState; | |
265 | ||
266 | static int inet_connect_addr(struct addrinfo *addr, bool *in_progress, | |
11663b55 | 267 | ConnectState *connect_state, Error **errp); |
233aa5c2 OW |
268 | |
269 | static void wait_for_connect(void *opaque) | |
d247d25f | 270 | { |
233aa5c2 OW |
271 | ConnectState *s = opaque; |
272 | int val = 0, rc = 0; | |
273 | socklen_t valsize = sizeof(val); | |
274 | bool in_progress; | |
51795029 | 275 | Error *err = NULL; |
233aa5c2 | 276 | |
82e1cc4b | 277 | qemu_set_fd_handler(s->fd, NULL, NULL, NULL); |
233aa5c2 OW |
278 | |
279 | do { | |
9957fc7f | 280 | rc = qemu_getsockopt(s->fd, SOL_SOCKET, SO_ERROR, &val, &valsize); |
b16a44e1 | 281 | } while (rc == -1 && errno == EINTR); |
233aa5c2 OW |
282 | |
283 | /* update rc to contain error */ | |
284 | if (!rc && val) { | |
285 | rc = -1; | |
51795029 | 286 | errno = val; |
233aa5c2 OW |
287 | } |
288 | ||
289 | /* connect error */ | |
290 | if (rc < 0) { | |
51795029 | 291 | error_setg_errno(&err, errno, "Error connecting to socket"); |
233aa5c2 OW |
292 | closesocket(s->fd); |
293 | s->fd = rc; | |
294 | } | |
295 | ||
296 | /* try to connect to the next address on the list */ | |
1fc05adf PB |
297 | if (s->current_addr) { |
298 | while (s->current_addr->ai_next != NULL && s->fd < 0) { | |
299 | s->current_addr = s->current_addr->ai_next; | |
11663b55 | 300 | s->fd = inet_connect_addr(s->current_addr, &in_progress, s, NULL); |
51795029 CM |
301 | if (s->fd < 0) { |
302 | error_free(err); | |
303 | err = NULL; | |
304 | error_setg_errno(&err, errno, "Unable to start socket connect"); | |
305 | } | |
1fc05adf PB |
306 | /* connect in progress */ |
307 | if (in_progress) { | |
51795029 | 308 | goto out; |
1fc05adf | 309 | } |
233aa5c2 | 310 | } |
1fc05adf PB |
311 | |
312 | freeaddrinfo(s->addr_list); | |
233aa5c2 | 313 | } |
05bc1d8a | 314 | |
233aa5c2 | 315 | if (s->callback) { |
51795029 | 316 | s->callback(s->fd, err, s->opaque); |
05bc1d8a | 317 | } |
233aa5c2 | 318 | g_free(s); |
51795029 CM |
319 | out: |
320 | error_free(err); | |
233aa5c2 OW |
321 | } |
322 | ||
323 | static int inet_connect_addr(struct addrinfo *addr, bool *in_progress, | |
11663b55 | 324 | ConnectState *connect_state, Error **errp) |
233aa5c2 OW |
325 | { |
326 | int sock, rc; | |
327 | ||
328 | *in_progress = false; | |
05bc1d8a MT |
329 | |
330 | sock = qemu_socket(addr->ai_family, addr->ai_socktype, addr->ai_protocol); | |
331 | if (sock < 0) { | |
235256a2 | 332 | error_setg_errno(errp, errno, "Failed to create socket"); |
05bc1d8a MT |
333 | return -1; |
334 | } | |
04fd1c78 | 335 | socket_set_fast_reuse(sock); |
233aa5c2 | 336 | if (connect_state != NULL) { |
f9e8cacc | 337 | qemu_set_nonblock(sock); |
05bc1d8a MT |
338 | } |
339 | /* connect to peer */ | |
340 | do { | |
341 | rc = 0; | |
342 | if (connect(sock, addr->ai_addr, addr->ai_addrlen) < 0) { | |
b16a44e1 | 343 | rc = -errno; |
05bc1d8a MT |
344 | } |
345 | } while (rc == -EINTR); | |
346 | ||
233aa5c2 OW |
347 | if (connect_state != NULL && QEMU_SOCKET_RC_INPROGRESS(rc)) { |
348 | connect_state->fd = sock; | |
82e1cc4b | 349 | qemu_set_fd_handler(sock, NULL, wait_for_connect, connect_state); |
233aa5c2 | 350 | *in_progress = true; |
05bc1d8a | 351 | } else if (rc < 0) { |
235256a2 | 352 | error_setg_errno(errp, errno, "Failed to connect socket"); |
05bc1d8a MT |
353 | closesocket(sock); |
354 | return -1; | |
355 | } | |
356 | return sock; | |
357 | } | |
358 | ||
2942e420 DB |
359 | static struct addrinfo *inet_parse_connect_saddr(InetSocketAddress *saddr, |
360 | Error **errp) | |
05bc1d8a MT |
361 | { |
362 | struct addrinfo ai, *res; | |
363 | int rc; | |
2942e420 | 364 | Error *err = NULL; |
340849a9 | 365 | static int useV4Mapped = 1; |
d247d25f | 366 | |
05bc1d8a | 367 | memset(&ai, 0, sizeof(ai)); |
233aa5c2 | 368 | |
340849a9 DB |
369 | ai.ai_flags = AI_CANONNAME | AI_ADDRCONFIG; |
370 | if (atomic_read(&useV4Mapped)) { | |
371 | ai.ai_flags |= AI_V4MAPPED; | |
372 | } | |
2942e420 | 373 | ai.ai_family = inet_ai_family_from_address(saddr, &err); |
f4c94c7c | 374 | ai.ai_socktype = SOCK_STREAM; |
d247d25f | 375 | |
2942e420 DB |
376 | if (err) { |
377 | error_propagate(errp, err); | |
05bc1d8a | 378 | return NULL; |
d247d25f AL |
379 | } |
380 | ||
2942e420 DB |
381 | if (saddr->host == NULL || saddr->port == NULL) { |
382 | error_setg(errp, "host and/or port not specified"); | |
383 | return NULL; | |
05bc1d8a | 384 | } |
d247d25f AL |
385 | |
386 | /* lookup */ | |
2942e420 | 387 | rc = getaddrinfo(saddr->host, saddr->port, &ai, &res); |
340849a9 DB |
388 | |
389 | /* At least FreeBSD and OS-X 10.6 declare AI_V4MAPPED but | |
390 | * then don't implement it in their getaddrinfo(). Detect | |
391 | * this and retry without the flag since that's preferrable | |
392 | * to a fatal error | |
393 | */ | |
394 | if (rc == EAI_BADFLAGS && | |
395 | (ai.ai_flags & AI_V4MAPPED)) { | |
396 | atomic_set(&useV4Mapped, 0); | |
397 | ai.ai_flags &= ~AI_V4MAPPED; | |
398 | rc = getaddrinfo(saddr->host, saddr->port, &ai, &res); | |
399 | } | |
05bc1d8a | 400 | if (rc != 0) { |
2942e420 DB |
401 | error_setg(errp, "address resolution failed for %s:%s: %s", |
402 | saddr->host, saddr->port, gai_strerror(rc)); | |
05bc1d8a MT |
403 | return NULL; |
404 | } | |
405 | return res; | |
406 | } | |
407 | ||
5db5f44c OW |
408 | /** |
409 | * Create a socket and connect it to an address. | |
410 | * | |
2942e420 | 411 | * @saddr: Inet socket address specification |
5db5f44c | 412 | * @errp: set on error |
233aa5c2 OW |
413 | * @callback: callback function for non-blocking connect |
414 | * @opaque: opaque for callback function | |
5db5f44c OW |
415 | * |
416 | * Returns: -1 on error, file descriptor on success. | |
233aa5c2 OW |
417 | * |
418 | * If @callback is non-null, the connect is non-blocking. If this | |
419 | * function succeeds, callback will be called when the connection | |
420 | * completes, with the file descriptor on success, or -1 on error. | |
5db5f44c | 421 | */ |
89cadc9d AA |
422 | int inet_connect_saddr(InetSocketAddress *saddr, Error **errp, |
423 | NonBlockingConnectHandler *callback, void *opaque) | |
05bc1d8a | 424 | { |
3f9286b7 | 425 | Error *local_err = NULL; |
05bc1d8a MT |
426 | struct addrinfo *res, *e; |
427 | int sock = -1; | |
233aa5c2 OW |
428 | bool in_progress; |
429 | ConnectState *connect_state = NULL; | |
05bc1d8a | 430 | |
2942e420 | 431 | res = inet_parse_connect_saddr(saddr, errp); |
05bc1d8a MT |
432 | if (!res) { |
433 | return -1; | |
434 | } | |
435 | ||
233aa5c2 OW |
436 | if (callback != NULL) { |
437 | connect_state = g_malloc0(sizeof(*connect_state)); | |
438 | connect_state->addr_list = res; | |
439 | connect_state->callback = callback; | |
440 | connect_state->opaque = opaque; | |
d247d25f | 441 | } |
d247d25f AL |
442 | |
443 | for (e = res; e != NULL; e = e->ai_next) { | |
3f9286b7 MA |
444 | error_free(local_err); |
445 | local_err = NULL; | |
233aa5c2 OW |
446 | if (connect_state != NULL) { |
447 | connect_state->current_addr = e; | |
448 | } | |
3f9286b7 MA |
449 | sock = inet_connect_addr(e, &in_progress, connect_state, &local_err); |
450 | if (sock >= 0) { | |
05bc1d8a | 451 | break; |
a6ba35b3 | 452 | } |
d247d25f | 453 | } |
3f9286b7 MA |
454 | |
455 | if (sock < 0) { | |
456 | error_propagate(errp, local_err); | |
457 | } else if (in_progress) { | |
458 | /* wait_for_connect() will do the rest */ | |
459 | return sock; | |
460 | } else { | |
461 | if (callback) { | |
51795029 | 462 | callback(sock, NULL, opaque); |
3f9286b7 MA |
463 | } |
464 | } | |
233aa5c2 | 465 | g_free(connect_state); |
d247d25f | 466 | freeaddrinfo(res); |
05bc1d8a | 467 | return sock; |
d247d25f AL |
468 | } |
469 | ||
8b39910e DB |
470 | static int inet_dgram_saddr(InetSocketAddress *sraddr, |
471 | InetSocketAddress *sladdr, | |
472 | Error **errp) | |
7e1b35b4 GH |
473 | { |
474 | struct addrinfo ai, *peer = NULL, *local = NULL; | |
475 | const char *addr; | |
476 | const char *port; | |
7e1b35b4 | 477 | int sock = -1, rc; |
8b39910e | 478 | Error *err = NULL; |
7e1b35b4 GH |
479 | |
480 | /* lookup peer addr */ | |
481 | memset(&ai,0, sizeof(ai)); | |
3de3d698 | 482 | ai.ai_flags = AI_CANONNAME | AI_V4MAPPED | AI_ADDRCONFIG; |
8b39910e | 483 | ai.ai_family = inet_ai_family_from_address(sraddr, &err); |
7e1b35b4 GH |
484 | ai.ai_socktype = SOCK_DGRAM; |
485 | ||
8b39910e DB |
486 | if (err) { |
487 | error_propagate(errp, err); | |
58c652c0 | 488 | goto err; |
8b39910e DB |
489 | } |
490 | ||
491 | addr = sraddr->host; | |
492 | port = sraddr->port; | |
7e1b35b4 GH |
493 | if (addr == NULL || strlen(addr) == 0) { |
494 | addr = "localhost"; | |
495 | } | |
496 | if (port == NULL || strlen(port) == 0) { | |
4f085c82 | 497 | error_setg(errp, "remote port not specified"); |
58c652c0 | 498 | goto err; |
7e1b35b4 GH |
499 | } |
500 | ||
9cd1883c | 501 | if ((rc = getaddrinfo(addr, port, &ai, &peer)) != 0) { |
4f085c82 PB |
502 | error_setg(errp, "address resolution failed for %s:%s: %s", addr, port, |
503 | gai_strerror(rc)); | |
26015051 | 504 | goto err; |
7e1b35b4 | 505 | } |
7e1b35b4 GH |
506 | |
507 | /* lookup local addr */ | |
508 | memset(&ai,0, sizeof(ai)); | |
509 | ai.ai_flags = AI_PASSIVE; | |
510 | ai.ai_family = peer->ai_family; | |
511 | ai.ai_socktype = SOCK_DGRAM; | |
512 | ||
8b39910e DB |
513 | if (sladdr) { |
514 | addr = sladdr->host; | |
515 | port = sladdr->port; | |
516 | if (addr == NULL || strlen(addr) == 0) { | |
517 | addr = NULL; | |
518 | } | |
519 | if (!port || strlen(port) == 0) { | |
520 | port = "0"; | |
521 | } | |
522 | } else { | |
7e1b35b4 | 523 | addr = NULL; |
7e1b35b4 | 524 | port = "0"; |
8b39910e | 525 | } |
7e1b35b4 | 526 | |
9cd1883c | 527 | if ((rc = getaddrinfo(addr, port, &ai, &local)) != 0) { |
4f085c82 PB |
528 | error_setg(errp, "address resolution failed for %s:%s: %s", addr, port, |
529 | gai_strerror(rc)); | |
39b38459 | 530 | goto err; |
7e1b35b4 | 531 | } |
7e1b35b4 GH |
532 | |
533 | /* create socket */ | |
40ff6d7e | 534 | sock = qemu_socket(peer->ai_family, peer->ai_socktype, peer->ai_protocol); |
7e1b35b4 | 535 | if (sock < 0) { |
235256a2 | 536 | error_setg_errno(errp, errno, "Failed to create socket"); |
7e1b35b4 GH |
537 | goto err; |
538 | } | |
04fd1c78 | 539 | socket_set_fast_reuse(sock); |
7e1b35b4 GH |
540 | |
541 | /* bind socket */ | |
7e1b35b4 | 542 | if (bind(sock, local->ai_addr, local->ai_addrlen) < 0) { |
235256a2 | 543 | error_setg_errno(errp, errno, "Failed to bind socket"); |
7e1b35b4 GH |
544 | goto err; |
545 | } | |
546 | ||
547 | /* connect to peer */ | |
7e1b35b4 | 548 | if (connect(sock,peer->ai_addr,peer->ai_addrlen) < 0) { |
235256a2 | 549 | error_setg_errno(errp, errno, "Failed to connect socket"); |
7e1b35b4 GH |
550 | goto err; |
551 | } | |
552 | ||
553 | freeaddrinfo(local); | |
554 | freeaddrinfo(peer); | |
555 | return sock; | |
556 | ||
557 | err: | |
26015051 | 558 | if (sock != -1) { |
7e1b35b4 | 559 | closesocket(sock); |
26015051 C |
560 | } |
561 | if (local) { | |
7e1b35b4 | 562 | freeaddrinfo(local); |
26015051 C |
563 | } |
564 | if (peer) { | |
7e1b35b4 | 565 | freeaddrinfo(peer); |
26015051 C |
566 | } |
567 | ||
7e1b35b4 GH |
568 | return -1; |
569 | } | |
570 | ||
f4c94c7c | 571 | /* compatibility wrapper */ |
f17c90be | 572 | InetSocketAddress *inet_parse(const char *str, Error **errp) |
f4c94c7c | 573 | { |
879e45c7 | 574 | InetSocketAddress *addr; |
f4c94c7c | 575 | const char *optstr, *h; |
55a10996 | 576 | char host[65]; |
f4c94c7c | 577 | char port[33]; |
879e45c7 | 578 | int to; |
f4c94c7c GH |
579 | int pos; |
580 | ||
879e45c7 PB |
581 | addr = g_new0(InetSocketAddress, 1); |
582 | ||
f4c94c7c GH |
583 | /* parse address */ |
584 | if (str[0] == ':') { | |
585 | /* no host given */ | |
879e45c7 | 586 | host[0] = '\0'; |
9cd1883c | 587 | if (sscanf(str, ":%32[^,]%n", port, &pos) != 1) { |
2f002c43 | 588 | error_setg(errp, "error parsing port in address '%s'", str); |
879e45c7 | 589 | goto fail; |
f4c94c7c GH |
590 | } |
591 | } else if (str[0] == '[') { | |
592 | /* IPv6 addr */ | |
9cd1883c | 593 | if (sscanf(str, "[%64[^]]]:%32[^,]%n", host, port, &pos) != 2) { |
2f002c43 | 594 | error_setg(errp, "error parsing IPv6 address '%s'", str); |
879e45c7 | 595 | goto fail; |
f4c94c7c | 596 | } |
879e45c7 | 597 | addr->ipv6 = addr->has_ipv6 = true; |
f4c94c7c | 598 | } else { |
391b7b97 | 599 | /* hostname or IPv4 addr */ |
9cd1883c | 600 | if (sscanf(str, "%64[^:]:%32[^,]%n", host, port, &pos) != 2) { |
2f002c43 | 601 | error_setg(errp, "error parsing address '%s'", str); |
879e45c7 | 602 | goto fail; |
f4c94c7c | 603 | } |
391b7b97 JT |
604 | if (host[strspn(host, "0123456789.")] == '\0') { |
605 | addr->ipv4 = addr->has_ipv4 = true; | |
606 | } | |
f4c94c7c | 607 | } |
879e45c7 PB |
608 | |
609 | addr->host = g_strdup(host); | |
610 | addr->port = g_strdup(port); | |
f4c94c7c GH |
611 | |
612 | /* parse options */ | |
613 | optstr = str + pos; | |
614 | h = strstr(optstr, ",to="); | |
879e45c7 | 615 | if (h) { |
1ccbc285 AP |
616 | h += 4; |
617 | if (sscanf(h, "%d%n", &to, &pos) != 1 || | |
618 | (h[pos] != '\0' && h[pos] != ',')) { | |
879e45c7 PB |
619 | error_setg(errp, "error parsing to= argument"); |
620 | goto fail; | |
621 | } | |
622 | addr->has_to = true; | |
623 | addr->to = to; | |
624 | } | |
625 | if (strstr(optstr, ",ipv4")) { | |
626 | addr->ipv4 = addr->has_ipv4 = true; | |
627 | } | |
628 | if (strstr(optstr, ",ipv6")) { | |
629 | addr->ipv6 = addr->has_ipv6 = true; | |
630 | } | |
631 | return addr; | |
632 | ||
633 | fail: | |
634 | qapi_free_InetSocketAddress(addr); | |
635 | return NULL; | |
636 | } | |
637 | ||
e5bc776f | 638 | |
5db5f44c OW |
639 | /** |
640 | * Create a blocking socket and connect it to an address. | |
641 | * | |
642 | * @str: address string | |
643 | * @errp: set in case of an error | |
644 | * | |
645 | * Returns -1 in case of error, file descriptor on success | |
646 | **/ | |
647 | int inet_connect(const char *str, Error **errp) | |
f4c94c7c | 648 | { |
f4c94c7c | 649 | int sock = -1; |
879e45c7 | 650 | InetSocketAddress *addr; |
f4c94c7c | 651 | |
879e45c7 PB |
652 | addr = inet_parse(str, errp); |
653 | if (addr != NULL) { | |
2942e420 | 654 | sock = inet_connect_saddr(addr, errp, NULL, NULL); |
879e45c7 | 655 | qapi_free_InetSocketAddress(addr); |
5db5f44c | 656 | } |
5db5f44c OW |
657 | return sock; |
658 | } | |
659 | ||
6a02c806 SH |
660 | #ifdef CONFIG_AF_VSOCK |
661 | static bool vsock_parse_vaddr_to_sockaddr(const VsockSocketAddress *vaddr, | |
662 | struct sockaddr_vm *svm, | |
663 | Error **errp) | |
664 | { | |
665 | unsigned long long val; | |
666 | ||
667 | memset(svm, 0, sizeof(*svm)); | |
668 | svm->svm_family = AF_VSOCK; | |
669 | ||
670 | if (parse_uint_full(vaddr->cid, &val, 10) < 0 || | |
671 | val > UINT32_MAX) { | |
672 | error_setg(errp, "Failed to parse cid '%s'", vaddr->cid); | |
673 | return false; | |
674 | } | |
675 | svm->svm_cid = val; | |
676 | ||
677 | if (parse_uint_full(vaddr->port, &val, 10) < 0 || | |
678 | val > UINT32_MAX) { | |
679 | error_setg(errp, "Failed to parse port '%s'", vaddr->port); | |
680 | return false; | |
681 | } | |
682 | svm->svm_port = val; | |
683 | ||
684 | return true; | |
685 | } | |
686 | ||
687 | static int vsock_connect_addr(const struct sockaddr_vm *svm, bool *in_progress, | |
688 | ConnectState *connect_state, Error **errp) | |
689 | { | |
690 | int sock, rc; | |
691 | ||
692 | *in_progress = false; | |
693 | ||
694 | sock = qemu_socket(AF_VSOCK, SOCK_STREAM, 0); | |
695 | if (sock < 0) { | |
696 | error_setg_errno(errp, errno, "Failed to create socket"); | |
697 | return -1; | |
698 | } | |
699 | if (connect_state != NULL) { | |
700 | qemu_set_nonblock(sock); | |
701 | } | |
702 | /* connect to peer */ | |
703 | do { | |
704 | rc = 0; | |
705 | if (connect(sock, (const struct sockaddr *)svm, sizeof(*svm)) < 0) { | |
706 | rc = -errno; | |
707 | } | |
708 | } while (rc == -EINTR); | |
709 | ||
710 | if (connect_state != NULL && QEMU_SOCKET_RC_INPROGRESS(rc)) { | |
711 | connect_state->fd = sock; | |
712 | qemu_set_fd_handler(sock, NULL, wait_for_connect, connect_state); | |
713 | *in_progress = true; | |
714 | } else if (rc < 0) { | |
715 | error_setg_errno(errp, errno, "Failed to connect socket"); | |
716 | closesocket(sock); | |
717 | return -1; | |
718 | } | |
719 | return sock; | |
720 | } | |
721 | ||
722 | static int vsock_connect_saddr(VsockSocketAddress *vaddr, Error **errp, | |
723 | NonBlockingConnectHandler *callback, | |
724 | void *opaque) | |
725 | { | |
726 | struct sockaddr_vm svm; | |
727 | int sock = -1; | |
728 | bool in_progress; | |
729 | ConnectState *connect_state = NULL; | |
730 | ||
731 | if (!vsock_parse_vaddr_to_sockaddr(vaddr, &svm, errp)) { | |
732 | return -1; | |
733 | } | |
734 | ||
735 | if (callback != NULL) { | |
736 | connect_state = g_malloc0(sizeof(*connect_state)); | |
737 | connect_state->callback = callback; | |
738 | connect_state->opaque = opaque; | |
739 | } | |
740 | ||
741 | sock = vsock_connect_addr(&svm, &in_progress, connect_state, errp); | |
742 | if (sock < 0) { | |
743 | /* do nothing */ | |
744 | } else if (in_progress) { | |
745 | /* wait_for_connect() will do the rest */ | |
746 | return sock; | |
747 | } else { | |
748 | if (callback) { | |
749 | callback(sock, NULL, opaque); | |
750 | } | |
751 | } | |
752 | g_free(connect_state); | |
753 | return sock; | |
754 | } | |
755 | ||
756 | static int vsock_listen_saddr(VsockSocketAddress *vaddr, | |
757 | Error **errp) | |
758 | { | |
759 | struct sockaddr_vm svm; | |
760 | int slisten; | |
761 | ||
762 | if (!vsock_parse_vaddr_to_sockaddr(vaddr, &svm, errp)) { | |
763 | return -1; | |
764 | } | |
765 | ||
766 | slisten = qemu_socket(AF_VSOCK, SOCK_STREAM, 0); | |
767 | if (slisten < 0) { | |
768 | error_setg_errno(errp, errno, "Failed to create socket"); | |
769 | return -1; | |
770 | } | |
771 | ||
772 | if (bind(slisten, (const struct sockaddr *)&svm, sizeof(svm)) != 0) { | |
773 | error_setg_errno(errp, errno, "Failed to bind socket"); | |
774 | closesocket(slisten); | |
775 | return -1; | |
776 | } | |
777 | ||
778 | if (listen(slisten, 1) != 0) { | |
779 | error_setg_errno(errp, errno, "Failed to listen on socket"); | |
780 | closesocket(slisten); | |
781 | return -1; | |
782 | } | |
783 | return slisten; | |
784 | } | |
785 | ||
786 | static VsockSocketAddress *vsock_parse(const char *str, Error **errp) | |
787 | { | |
788 | VsockSocketAddress *addr = NULL; | |
789 | char cid[33]; | |
790 | char port[33]; | |
791 | int n; | |
792 | ||
793 | if (sscanf(str, "%32[^:]:%32[^,]%n", cid, port, &n) != 2) { | |
794 | error_setg(errp, "error parsing address '%s'", str); | |
795 | return NULL; | |
796 | } | |
797 | if (str[n] != '\0') { | |
798 | error_setg(errp, "trailing characters in address '%s'", str); | |
799 | return NULL; | |
800 | } | |
801 | ||
802 | addr = g_new0(VsockSocketAddress, 1); | |
803 | addr->cid = g_strdup(cid); | |
804 | addr->port = g_strdup(port); | |
805 | return addr; | |
806 | } | |
807 | #else | |
808 | static void vsock_unsupported(Error **errp) | |
809 | { | |
810 | error_setg(errp, "socket family AF_VSOCK unsupported"); | |
811 | } | |
812 | ||
813 | static int vsock_connect_saddr(VsockSocketAddress *vaddr, Error **errp, | |
814 | NonBlockingConnectHandler *callback, | |
815 | void *opaque) | |
816 | { | |
817 | vsock_unsupported(errp); | |
818 | return -1; | |
819 | } | |
820 | ||
821 | static int vsock_listen_saddr(VsockSocketAddress *vaddr, | |
822 | Error **errp) | |
823 | { | |
824 | vsock_unsupported(errp); | |
825 | return -1; | |
826 | } | |
827 | ||
828 | static VsockSocketAddress *vsock_parse(const char *str, Error **errp) | |
829 | { | |
830 | vsock_unsupported(errp); | |
831 | return NULL; | |
832 | } | |
833 | #endif /* CONFIG_AF_VSOCK */ | |
834 | ||
d247d25f AL |
835 | #ifndef _WIN32 |
836 | ||
1856835d DB |
837 | static int unix_listen_saddr(UnixSocketAddress *saddr, |
838 | bool update_addr, | |
839 | Error **errp) | |
d247d25f AL |
840 | { |
841 | struct sockaddr_un un; | |
62b6adfb | 842 | int sock, fd; |
d247d25f | 843 | |
40ff6d7e | 844 | sock = qemu_socket(PF_UNIX, SOCK_STREAM, 0); |
d247d25f | 845 | if (sock < 0) { |
b658c53d | 846 | error_setg_errno(errp, errno, "Failed to create Unix socket"); |
39b6efc8 | 847 | return -1; |
d247d25f AL |
848 | } |
849 | ||
d247d25f AL |
850 | memset(&un, 0, sizeof(un)); |
851 | un.sun_family = AF_UNIX; | |
1856835d DB |
852 | if (saddr->path && strlen(saddr->path)) { |
853 | snprintf(un.sun_path, sizeof(un.sun_path), "%s", saddr->path); | |
d247d25f | 854 | } else { |
b658c53d PB |
855 | const char *tmpdir = getenv("TMPDIR"); |
856 | tmpdir = tmpdir ? tmpdir : "/tmp"; | |
857 | if (snprintf(un.sun_path, sizeof(un.sun_path), "%s/qemu-socket-XXXXXX", | |
858 | tmpdir) >= sizeof(un.sun_path)) { | |
859 | error_setg_errno(errp, errno, | |
860 | "TMPDIR environment variable (%s) too large", tmpdir); | |
861 | goto err; | |
862 | } | |
863 | ||
d247d25f AL |
864 | /* |
865 | * This dummy fd usage silences the mktemp() unsecure warning. | |
866 | * Using mkstemp() doesn't make things more secure here | |
867 | * though. bind() complains about existing files, so we have | |
868 | * to unlink first and thus re-open the race window. The | |
869 | * worst case possible is bind() failing, i.e. a DoS attack. | |
870 | */ | |
b658c53d PB |
871 | fd = mkstemp(un.sun_path); |
872 | if (fd < 0) { | |
873 | error_setg_errno(errp, errno, | |
874 | "Failed to make a temporary socket name in %s", tmpdir); | |
875 | goto err; | |
876 | } | |
877 | close(fd); | |
1856835d DB |
878 | if (update_addr) { |
879 | g_free(saddr->path); | |
880 | saddr->path = g_strdup(un.sun_path); | |
881 | } | |
d247d25f | 882 | } |
d247d25f | 883 | |
a2f31f18 | 884 | if (unlink(un.sun_path) < 0 && errno != ENOENT) { |
0ef705a2 CR |
885 | error_setg_errno(errp, errno, |
886 | "Failed to unlink socket %s", un.sun_path); | |
887 | goto err; | |
888 | } | |
d247d25f | 889 | if (bind(sock, (struct sockaddr*) &un, sizeof(un)) < 0) { |
b658c53d | 890 | error_setg_errno(errp, errno, "Failed to bind socket to %s", un.sun_path); |
d247d25f AL |
891 | goto err; |
892 | } | |
893 | if (listen(sock, 1) < 0) { | |
235256a2 | 894 | error_setg_errno(errp, errno, "Failed to listen on socket"); |
d247d25f AL |
895 | goto err; |
896 | } | |
897 | ||
d247d25f AL |
898 | return sock; |
899 | ||
900 | err: | |
d247d25f AL |
901 | closesocket(sock); |
902 | return -1; | |
903 | } | |
904 | ||
2942e420 DB |
905 | static int unix_connect_saddr(UnixSocketAddress *saddr, Error **errp, |
906 | NonBlockingConnectHandler *callback, void *opaque) | |
d247d25f AL |
907 | { |
908 | struct sockaddr_un un; | |
1fc05adf PB |
909 | ConnectState *connect_state = NULL; |
910 | int sock, rc; | |
d247d25f | 911 | |
2942e420 | 912 | if (saddr->path == NULL) { |
312fd5f2 | 913 | error_setg(errp, "unix connect: no path specified"); |
2af2bf67 GH |
914 | return -1; |
915 | } | |
916 | ||
40ff6d7e | 917 | sock = qemu_socket(PF_UNIX, SOCK_STREAM, 0); |
d247d25f | 918 | if (sock < 0) { |
235256a2 | 919 | error_setg_errno(errp, errno, "Failed to create socket"); |
39b6efc8 | 920 | return -1; |
d247d25f | 921 | } |
1fc05adf PB |
922 | if (callback != NULL) { |
923 | connect_state = g_malloc0(sizeof(*connect_state)); | |
924 | connect_state->callback = callback; | |
925 | connect_state->opaque = opaque; | |
f9e8cacc | 926 | qemu_set_nonblock(sock); |
1fc05adf | 927 | } |
d247d25f AL |
928 | |
929 | memset(&un, 0, sizeof(un)); | |
930 | un.sun_family = AF_UNIX; | |
2942e420 | 931 | snprintf(un.sun_path, sizeof(un.sun_path), "%s", saddr->path); |
1fc05adf PB |
932 | |
933 | /* connect to peer */ | |
934 | do { | |
935 | rc = 0; | |
936 | if (connect(sock, (struct sockaddr *) &un, sizeof(un)) < 0) { | |
b16a44e1 | 937 | rc = -errno; |
1fc05adf PB |
938 | } |
939 | } while (rc == -EINTR); | |
940 | ||
941 | if (connect_state != NULL && QEMU_SOCKET_RC_INPROGRESS(rc)) { | |
942 | connect_state->fd = sock; | |
82e1cc4b | 943 | qemu_set_fd_handler(sock, NULL, wait_for_connect, connect_state); |
1fc05adf PB |
944 | return sock; |
945 | } else if (rc >= 0) { | |
946 | /* non blocking socket immediate success, call callback */ | |
947 | if (callback != NULL) { | |
51795029 | 948 | callback(sock, NULL, opaque); |
1fc05adf PB |
949 | } |
950 | } | |
951 | ||
952 | if (rc < 0) { | |
235256a2 | 953 | error_setg_errno(errp, -rc, "Failed to connect socket"); |
9d947472 | 954 | close(sock); |
1fc05adf | 955 | sock = -1; |
d247d25f AL |
956 | } |
957 | ||
1fc05adf | 958 | g_free(connect_state); |
d247d25f AL |
959 | return sock; |
960 | } | |
961 | ||
0c814709 PB |
962 | #else |
963 | ||
1856835d DB |
964 | static int unix_listen_saddr(UnixSocketAddress *saddr, |
965 | bool update_addr, | |
966 | Error **errp) | |
0c814709 | 967 | { |
58899664 | 968 | error_setg(errp, "unix sockets are not available on windows"); |
0c814709 PB |
969 | errno = ENOTSUP; |
970 | return -1; | |
971 | } | |
972 | ||
2942e420 DB |
973 | static int unix_connect_saddr(UnixSocketAddress *saddr, Error **errp, |
974 | NonBlockingConnectHandler *callback, void *opaque) | |
0c814709 | 975 | { |
58899664 | 976 | error_setg(errp, "unix sockets are not available on windows"); |
0c814709 PB |
977 | errno = ENOTSUP; |
978 | return -1; | |
979 | } | |
980 | #endif | |
981 | ||
2af2bf67 | 982 | /* compatibility wrapper */ |
7fc4e63e | 983 | int unix_listen(const char *str, char *ostr, int olen, Error **errp) |
62b6adfb | 984 | { |
62b6adfb GH |
985 | char *path, *optstr; |
986 | int sock, len; | |
1856835d | 987 | UnixSocketAddress *saddr; |
62b6adfb | 988 | |
1856835d | 989 | saddr = g_new0(UnixSocketAddress, 1); |
62b6adfb GH |
990 | |
991 | optstr = strchr(str, ','); | |
992 | if (optstr) { | |
993 | len = optstr - str; | |
994 | if (len) { | |
7267c094 | 995 | path = g_malloc(len+1); |
62b6adfb | 996 | snprintf(path, len+1, "%.*s", len, str); |
1856835d | 997 | saddr->path = path; |
62b6adfb GH |
998 | } |
999 | } else { | |
1856835d | 1000 | saddr->path = g_strdup(str); |
62b6adfb GH |
1001 | } |
1002 | ||
1856835d | 1003 | sock = unix_listen_saddr(saddr, true, errp); |
62b6adfb | 1004 | |
26015051 | 1005 | if (sock != -1 && ostr) { |
1856835d | 1006 | snprintf(ostr, olen, "%s%s", saddr->path, optstr ? optstr : ""); |
26015051 C |
1007 | } |
1008 | ||
1856835d | 1009 | qapi_free_UnixSocketAddress(saddr); |
62b6adfb GH |
1010 | return sock; |
1011 | } | |
1012 | ||
7fc4e63e | 1013 | int unix_connect(const char *path, Error **errp) |
2af2bf67 | 1014 | { |
2942e420 | 1015 | UnixSocketAddress *saddr; |
2af2bf67 GH |
1016 | int sock; |
1017 | ||
2942e420 DB |
1018 | saddr = g_new0(UnixSocketAddress, 1); |
1019 | saddr->path = g_strdup(path); | |
1020 | sock = unix_connect_saddr(saddr, errp, NULL, NULL); | |
1021 | qapi_free_UnixSocketAddress(saddr); | |
1fc05adf PB |
1022 | return sock; |
1023 | } | |
1024 | ||
1025 | ||
101f9cbc PB |
1026 | SocketAddress *socket_parse(const char *str, Error **errp) |
1027 | { | |
afde3f8b | 1028 | SocketAddress *addr; |
101f9cbc | 1029 | |
afde3f8b | 1030 | addr = g_new0(SocketAddress, 1); |
101f9cbc PB |
1031 | if (strstart(str, "unix:", NULL)) { |
1032 | if (str[5] == '\0') { | |
312fd5f2 | 1033 | error_setg(errp, "invalid Unix socket address"); |
101f9cbc PB |
1034 | goto fail; |
1035 | } else { | |
2d32adda | 1036 | addr->type = SOCKET_ADDRESS_KIND_UNIX; |
32bafa8f EB |
1037 | addr->u.q_unix.data = g_new(UnixSocketAddress, 1); |
1038 | addr->u.q_unix.data->path = g_strdup(str + 5); | |
101f9cbc PB |
1039 | } |
1040 | } else if (strstart(str, "fd:", NULL)) { | |
1041 | if (str[3] == '\0') { | |
312fd5f2 | 1042 | error_setg(errp, "invalid file descriptor address"); |
101f9cbc PB |
1043 | goto fail; |
1044 | } else { | |
2d32adda | 1045 | addr->type = SOCKET_ADDRESS_KIND_FD; |
32bafa8f EB |
1046 | addr->u.fd.data = g_new(String, 1); |
1047 | addr->u.fd.data->str = g_strdup(str + 3); | |
101f9cbc | 1048 | } |
6a02c806 SH |
1049 | } else if (strstart(str, "vsock:", NULL)) { |
1050 | addr->type = SOCKET_ADDRESS_KIND_VSOCK; | |
1051 | addr->u.vsock.data = vsock_parse(str + strlen("vsock:"), errp); | |
1052 | if (addr->u.vsock.data == NULL) { | |
1053 | goto fail; | |
1054 | } | |
101f9cbc | 1055 | } else { |
2d32adda | 1056 | addr->type = SOCKET_ADDRESS_KIND_INET; |
32bafa8f EB |
1057 | addr->u.inet.data = inet_parse(str, errp); |
1058 | if (addr->u.inet.data == NULL) { | |
101f9cbc PB |
1059 | goto fail; |
1060 | } | |
1061 | } | |
1062 | return addr; | |
1063 | ||
1064 | fail: | |
1065 | qapi_free_SocketAddress(addr); | |
1066 | return NULL; | |
1067 | } | |
1068 | ||
1069 | int socket_connect(SocketAddress *addr, Error **errp, | |
1070 | NonBlockingConnectHandler *callback, void *opaque) | |
1071 | { | |
101f9cbc PB |
1072 | int fd; |
1073 | ||
2d32adda | 1074 | switch (addr->type) { |
101f9cbc | 1075 | case SOCKET_ADDRESS_KIND_INET: |
32bafa8f | 1076 | fd = inet_connect_saddr(addr->u.inet.data, errp, callback, opaque); |
101f9cbc PB |
1077 | break; |
1078 | ||
1079 | case SOCKET_ADDRESS_KIND_UNIX: | |
32bafa8f | 1080 | fd = unix_connect_saddr(addr->u.q_unix.data, errp, callback, opaque); |
101f9cbc PB |
1081 | break; |
1082 | ||
1083 | case SOCKET_ADDRESS_KIND_FD: | |
32bafa8f | 1084 | fd = monitor_get_fd(cur_mon, addr->u.fd.data->str, errp); |
d1ec72a4 | 1085 | if (fd >= 0 && callback) { |
1a751ebf | 1086 | qemu_set_nonblock(fd); |
51795029 | 1087 | callback(fd, NULL, opaque); |
101f9cbc PB |
1088 | } |
1089 | break; | |
1090 | ||
6a02c806 SH |
1091 | case SOCKET_ADDRESS_KIND_VSOCK: |
1092 | fd = vsock_connect_saddr(addr->u.vsock.data, errp, callback, opaque); | |
1093 | break; | |
1094 | ||
101f9cbc PB |
1095 | default: |
1096 | abort(); | |
1097 | } | |
101f9cbc PB |
1098 | return fd; |
1099 | } | |
1100 | ||
1101 | int socket_listen(SocketAddress *addr, Error **errp) | |
1102 | { | |
101f9cbc PB |
1103 | int fd; |
1104 | ||
2d32adda | 1105 | switch (addr->type) { |
101f9cbc | 1106 | case SOCKET_ADDRESS_KIND_INET: |
32bafa8f | 1107 | fd = inet_listen_saddr(addr->u.inet.data, 0, false, errp); |
101f9cbc PB |
1108 | break; |
1109 | ||
1110 | case SOCKET_ADDRESS_KIND_UNIX: | |
32bafa8f | 1111 | fd = unix_listen_saddr(addr->u.q_unix.data, false, errp); |
101f9cbc PB |
1112 | break; |
1113 | ||
1114 | case SOCKET_ADDRESS_KIND_FD: | |
32bafa8f | 1115 | fd = monitor_get_fd(cur_mon, addr->u.fd.data->str, errp); |
101f9cbc PB |
1116 | break; |
1117 | ||
6a02c806 SH |
1118 | case SOCKET_ADDRESS_KIND_VSOCK: |
1119 | fd = vsock_listen_saddr(addr->u.vsock.data, errp); | |
1120 | break; | |
1121 | ||
101f9cbc PB |
1122 | default: |
1123 | abort(); | |
1124 | } | |
101f9cbc PB |
1125 | return fd; |
1126 | } | |
1127 | ||
74b6ce43 MAL |
1128 | void socket_listen_cleanup(int fd, Error **errp) |
1129 | { | |
1130 | SocketAddress *addr; | |
1131 | ||
1132 | addr = socket_local_address(fd, errp); | |
1133 | ||
1134 | if (addr->type == SOCKET_ADDRESS_KIND_UNIX | |
1135 | && addr->u.q_unix.data->path) { | |
1136 | if (unlink(addr->u.q_unix.data->path) < 0 && errno != ENOENT) { | |
1137 | error_setg_errno(errp, errno, | |
1138 | "Failed to unlink socket %s", | |
1139 | addr->u.q_unix.data->path); | |
1140 | } | |
1141 | } | |
1142 | ||
73f40c18 | 1143 | qapi_free_SocketAddress(addr); |
74b6ce43 MAL |
1144 | } |
1145 | ||
3ecc059d GH |
1146 | int socket_dgram(SocketAddress *remote, SocketAddress *local, Error **errp) |
1147 | { | |
3ecc059d GH |
1148 | int fd; |
1149 | ||
2d32adda | 1150 | switch (remote->type) { |
3ecc059d | 1151 | case SOCKET_ADDRESS_KIND_INET: |
32bafa8f EB |
1152 | fd = inet_dgram_saddr(remote->u.inet.data, |
1153 | local ? local->u.inet.data : NULL, errp); | |
3ecc059d GH |
1154 | break; |
1155 | ||
1156 | default: | |
1157 | error_setg(errp, "socket type unsupported for datagram"); | |
7a5b6af1 | 1158 | fd = -1; |
3ecc059d | 1159 | } |
3ecc059d GH |
1160 | return fd; |
1161 | } | |
17c55dec DB |
1162 | |
1163 | ||
1164 | static SocketAddress * | |
1165 | socket_sockaddr_to_address_inet(struct sockaddr_storage *sa, | |
1166 | socklen_t salen, | |
1167 | Error **errp) | |
1168 | { | |
1169 | char host[NI_MAXHOST]; | |
1170 | char serv[NI_MAXSERV]; | |
1171 | SocketAddress *addr; | |
0399293e | 1172 | InetSocketAddress *inet; |
17c55dec DB |
1173 | int ret; |
1174 | ||
1175 | ret = getnameinfo((struct sockaddr *)sa, salen, | |
1176 | host, sizeof(host), | |
1177 | serv, sizeof(serv), | |
1178 | NI_NUMERICHOST | NI_NUMERICSERV); | |
1179 | if (ret != 0) { | |
1180 | error_setg(errp, "Cannot format numeric socket address: %s", | |
1181 | gai_strerror(ret)); | |
1182 | return NULL; | |
1183 | } | |
1184 | ||
1185 | addr = g_new0(SocketAddress, 1); | |
2d32adda | 1186 | addr->type = SOCKET_ADDRESS_KIND_INET; |
32bafa8f | 1187 | inet = addr->u.inet.data = g_new0(InetSocketAddress, 1); |
0399293e EB |
1188 | inet->host = g_strdup(host); |
1189 | inet->port = g_strdup(serv); | |
17c55dec | 1190 | if (sa->ss_family == AF_INET) { |
0399293e | 1191 | inet->has_ipv4 = inet->ipv4 = true; |
17c55dec | 1192 | } else { |
0399293e | 1193 | inet->has_ipv6 = inet->ipv6 = true; |
17c55dec DB |
1194 | } |
1195 | ||
1196 | return addr; | |
1197 | } | |
1198 | ||
1199 | ||
1200 | #ifndef WIN32 | |
1201 | static SocketAddress * | |
1202 | socket_sockaddr_to_address_unix(struct sockaddr_storage *sa, | |
1203 | socklen_t salen, | |
1204 | Error **errp) | |
1205 | { | |
1206 | SocketAddress *addr; | |
1207 | struct sockaddr_un *su = (struct sockaddr_un *)sa; | |
1208 | ||
1209 | addr = g_new0(SocketAddress, 1); | |
2d32adda | 1210 | addr->type = SOCKET_ADDRESS_KIND_UNIX; |
32bafa8f | 1211 | addr->u.q_unix.data = g_new0(UnixSocketAddress, 1); |
17c55dec | 1212 | if (su->sun_path[0]) { |
32bafa8f EB |
1213 | addr->u.q_unix.data->path = g_strndup(su->sun_path, |
1214 | sizeof(su->sun_path)); | |
17c55dec DB |
1215 | } |
1216 | ||
1217 | return addr; | |
1218 | } | |
1219 | #endif /* WIN32 */ | |
1220 | ||
6a02c806 SH |
1221 | #ifdef CONFIG_AF_VSOCK |
1222 | static SocketAddress * | |
1223 | socket_sockaddr_to_address_vsock(struct sockaddr_storage *sa, | |
1224 | socklen_t salen, | |
1225 | Error **errp) | |
1226 | { | |
1227 | SocketAddress *addr; | |
1228 | VsockSocketAddress *vaddr; | |
1229 | struct sockaddr_vm *svm = (struct sockaddr_vm *)sa; | |
1230 | ||
1231 | addr = g_new0(SocketAddress, 1); | |
1232 | addr->type = SOCKET_ADDRESS_KIND_VSOCK; | |
1233 | addr->u.vsock.data = vaddr = g_new0(VsockSocketAddress, 1); | |
1234 | vaddr->cid = g_strdup_printf("%u", svm->svm_cid); | |
1235 | vaddr->port = g_strdup_printf("%u", svm->svm_port); | |
1236 | ||
1237 | return addr; | |
1238 | } | |
1239 | #endif /* CONFIG_AF_VSOCK */ | |
1240 | ||
559607ea | 1241 | SocketAddress * |
17c55dec DB |
1242 | socket_sockaddr_to_address(struct sockaddr_storage *sa, |
1243 | socklen_t salen, | |
1244 | Error **errp) | |
1245 | { | |
1246 | switch (sa->ss_family) { | |
1247 | case AF_INET: | |
1248 | case AF_INET6: | |
1249 | return socket_sockaddr_to_address_inet(sa, salen, errp); | |
1250 | ||
1251 | #ifndef WIN32 | |
1252 | case AF_UNIX: | |
1253 | return socket_sockaddr_to_address_unix(sa, salen, errp); | |
1254 | #endif /* WIN32 */ | |
1255 | ||
6a02c806 SH |
1256 | #ifdef CONFIG_AF_VSOCK |
1257 | case AF_VSOCK: | |
1258 | return socket_sockaddr_to_address_vsock(sa, salen, errp); | |
1259 | #endif | |
1260 | ||
17c55dec DB |
1261 | default: |
1262 | error_setg(errp, "socket family %d unsupported", | |
1263 | sa->ss_family); | |
1264 | return NULL; | |
1265 | } | |
1266 | return 0; | |
1267 | } | |
1268 | ||
1269 | ||
1270 | SocketAddress *socket_local_address(int fd, Error **errp) | |
1271 | { | |
1272 | struct sockaddr_storage ss; | |
1273 | socklen_t sslen = sizeof(ss); | |
1274 | ||
1275 | if (getsockname(fd, (struct sockaddr *)&ss, &sslen) < 0) { | |
b16a44e1 | 1276 | error_setg_errno(errp, errno, "%s", |
17c55dec DB |
1277 | "Unable to query local socket address"); |
1278 | return NULL; | |
1279 | } | |
1280 | ||
1281 | return socket_sockaddr_to_address(&ss, sslen, errp); | |
1282 | } | |
1283 | ||
1284 | ||
1285 | SocketAddress *socket_remote_address(int fd, Error **errp) | |
1286 | { | |
1287 | struct sockaddr_storage ss; | |
1288 | socklen_t sslen = sizeof(ss); | |
1289 | ||
1290 | if (getpeername(fd, (struct sockaddr *)&ss, &sslen) < 0) { | |
b16a44e1 | 1291 | error_setg_errno(errp, errno, "%s", |
17c55dec DB |
1292 | "Unable to query remote socket address"); |
1293 | return NULL; | |
1294 | } | |
1295 | ||
1296 | return socket_sockaddr_to_address(&ss, sslen, errp); | |
1297 | } | |
2a8e21c7 | 1298 | |
7e844959 AA |
1299 | char *socket_address_to_string(struct SocketAddress *addr, Error **errp) |
1300 | { | |
1301 | char *buf; | |
1302 | InetSocketAddress *inet; | |
1303 | char host_port[INET6_ADDRSTRLEN + 5 + 4]; | |
1304 | ||
1305 | switch (addr->type) { | |
1306 | case SOCKET_ADDRESS_KIND_INET: | |
1307 | inet = addr->u.inet.data; | |
1308 | if (strchr(inet->host, ':') == NULL) { | |
1309 | snprintf(host_port, sizeof(host_port), "%s:%s", inet->host, | |
1310 | inet->port); | |
1311 | buf = g_strdup(host_port); | |
1312 | } else { | |
1313 | snprintf(host_port, sizeof(host_port), "[%s]:%s", inet->host, | |
1314 | inet->port); | |
1315 | buf = g_strdup(host_port); | |
1316 | } | |
1317 | break; | |
1318 | ||
1319 | case SOCKET_ADDRESS_KIND_UNIX: | |
1320 | buf = g_strdup(addr->u.q_unix.data->path); | |
1321 | break; | |
1322 | ||
1323 | case SOCKET_ADDRESS_KIND_FD: | |
1324 | buf = g_strdup(addr->u.fd.data->str); | |
1325 | break; | |
1326 | ||
6a02c806 SH |
1327 | case SOCKET_ADDRESS_KIND_VSOCK: |
1328 | buf = g_strdup_printf("%s:%s", | |
1329 | addr->u.vsock.data->cid, | |
1330 | addr->u.vsock.data->port); | |
1331 | break; | |
1332 | ||
7e844959 AA |
1333 | default: |
1334 | error_setg(errp, "socket family %d unsupported", | |
1335 | addr->type); | |
1336 | return NULL; | |
1337 | } | |
1338 | return buf; | |
1339 | } |