]>
Commit | Line | Data |
---|---|---|
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 | ||
a8d25326 | 24 | #include "qemu-common.h" |
83c9089e | 25 | #include "monitor/monitor.h" |
bd269ebc | 26 | #include "qapi/clone-visitor.h" |
da34e65c | 27 | #include "qapi/error.h" |
9af23989 | 28 | #include "qapi/qapi-visit-sockets.h" |
1de7afc9 | 29 | #include "qemu/sockets.h" |
1de7afc9 | 30 | #include "qemu/main-loop.h" |
b3db211f DB |
31 | #include "qapi/qobject-input-visitor.h" |
32 | #include "qapi/qobject-output-visitor.h" | |
f348b6d1 | 33 | #include "qemu/cutils.h" |
e5b6353c | 34 | #include "trace.h" |
d247d25f AL |
35 | |
36 | #ifndef AI_ADDRCONFIG | |
37 | # define AI_ADDRCONFIG 0 | |
38 | #endif | |
340849a9 | 39 | |
3de3d698 WB |
40 | #ifndef AI_V4MAPPED |
41 | # define AI_V4MAPPED 0 | |
42 | #endif | |
d247d25f | 43 | |
6979a813 DB |
44 | #ifndef AI_NUMERICSERV |
45 | # define AI_NUMERICSERV 0 | |
46 | #endif | |
47 | ||
2af2bf67 | 48 | |
d247d25f AL |
49 | static int inet_getport(struct addrinfo *e) |
50 | { | |
51 | struct sockaddr_in *i4; | |
52 | struct sockaddr_in6 *i6; | |
53 | ||
54 | switch (e->ai_family) { | |
55 | case PF_INET6: | |
56 | i6 = (void*)e->ai_addr; | |
57 | return ntohs(i6->sin6_port); | |
58 | case PF_INET: | |
59 | i4 = (void*)e->ai_addr; | |
60 | return ntohs(i4->sin_port); | |
61 | default: | |
62 | return 0; | |
63 | } | |
64 | } | |
65 | ||
66 | static void inet_setport(struct addrinfo *e, int port) | |
67 | { | |
68 | struct sockaddr_in *i4; | |
69 | struct sockaddr_in6 *i6; | |
70 | ||
71 | switch (e->ai_family) { | |
72 | case PF_INET6: | |
73 | i6 = (void*)e->ai_addr; | |
74 | i6->sin6_port = htons(port); | |
75 | break; | |
76 | case PF_INET: | |
77 | i4 = (void*)e->ai_addr; | |
78 | i4->sin_port = htons(port); | |
79 | break; | |
80 | } | |
81 | } | |
82 | ||
a589569f WX |
83 | NetworkAddressFamily inet_netfamily(int family) |
84 | { | |
85 | switch (family) { | |
86 | case PF_INET6: return NETWORK_ADDRESS_FAMILY_IPV6; | |
87 | case PF_INET: return NETWORK_ADDRESS_FAMILY_IPV4; | |
88 | case PF_UNIX: return NETWORK_ADDRESS_FAMILY_UNIX; | |
6a02c806 SH |
89 | #ifdef CONFIG_AF_VSOCK |
90 | case PF_VSOCK: return NETWORK_ADDRESS_FAMILY_VSOCK; | |
91 | #endif /* CONFIG_AF_VSOCK */ | |
a589569f WX |
92 | } |
93 | return NETWORK_ADDRESS_FAMILY_UNKNOWN; | |
94 | } | |
95 | ||
58dc31f1 DB |
96 | bool fd_is_socket(int fd) |
97 | { | |
98 | int optval; | |
99 | socklen_t optlen = sizeof(optval); | |
100 | return !qemu_getsockopt(fd, SOL_SOCKET, SO_TYPE, &optval, &optlen); | |
101 | } | |
102 | ||
103 | ||
1856835d DB |
104 | /* |
105 | * Matrix we're trying to apply | |
106 | * | |
107 | * ipv4 ipv6 family | |
108 | * - - PF_UNSPEC | |
109 | * - f PF_INET | |
110 | * - t PF_INET6 | |
111 | * f - PF_INET6 | |
112 | * f f <error> | |
113 | * f t PF_INET6 | |
114 | * t - PF_INET | |
115 | * t f PF_INET | |
94bc0d19 | 116 | * t t PF_INET6/PF_UNSPEC |
1856835d | 117 | * |
d43eda3d | 118 | * NB, this matrix is only about getting the necessary results |
1856835d DB |
119 | * from getaddrinfo(). Some of the cases require further work |
120 | * after reading results from getaddrinfo in order to fully | |
94bc0d19 DB |
121 | * apply the logic the end user wants. |
122 | * | |
123 | * In the first and last cases, we must set IPV6_V6ONLY=0 | |
124 | * when binding, to allow a single listener to potentially | |
125 | * accept both IPv4+6 addresses. | |
1856835d | 126 | */ |
c1b412f1 DB |
127 | int inet_ai_family_from_address(InetSocketAddress *addr, |
128 | Error **errp) | |
1856835d DB |
129 | { |
130 | if (addr->has_ipv6 && addr->has_ipv4 && | |
131 | !addr->ipv6 && !addr->ipv4) { | |
132 | error_setg(errp, "Cannot disable IPv4 and IPv6 at same time"); | |
133 | return PF_UNSPEC; | |
134 | } | |
94bc0d19 DB |
135 | if ((addr->has_ipv6 && addr->ipv6) && (addr->has_ipv4 && addr->ipv4)) { |
136 | /* | |
137 | * Some backends can only do a single listener. In that case | |
138 | * we want empty hostname to resolve to "::" and then use the | |
139 | * flag IPV6_V6ONLY==0 to get both protocols on 1 socket. This | |
140 | * doesn't work for addresses other than "", so they're just | |
141 | * inevitably broken until multiple listeners can be used, | |
142 | * and thus we honour getaddrinfo automatic protocol detection | |
143 | * Once all backends do multi-listener, remove the PF_INET6 | |
144 | * branch entirely. | |
145 | */ | |
146 | if (!addr->host || g_str_equal(addr->host, "")) { | |
147 | return PF_INET6; | |
148 | } else { | |
149 | return PF_UNSPEC; | |
150 | } | |
151 | } | |
1856835d DB |
152 | if ((addr->has_ipv6 && addr->ipv6) || (addr->has_ipv4 && !addr->ipv4)) { |
153 | return PF_INET6; | |
154 | } | |
155 | if ((addr->has_ipv4 && addr->ipv4) || (addr->has_ipv6 && !addr->ipv6)) { | |
156 | return PF_INET; | |
157 | } | |
158 | return PF_UNSPEC; | |
159 | } | |
160 | ||
39f80521 KO |
161 | static int create_fast_reuse_socket(struct addrinfo *e) |
162 | { | |
163 | int slisten = qemu_socket(e->ai_family, e->ai_socktype, e->ai_protocol); | |
164 | if (slisten < 0) { | |
165 | return -1; | |
166 | } | |
167 | socket_set_fast_reuse(slisten); | |
168 | return slisten; | |
169 | } | |
170 | ||
89382c3d KO |
171 | static int try_bind(int socket, InetSocketAddress *saddr, struct addrinfo *e) |
172 | { | |
173 | #ifndef IPV6_V6ONLY | |
174 | return bind(socket, e->ai_addr, e->ai_addrlen); | |
175 | #else | |
176 | /* | |
177 | * Deals with first & last cases in matrix in comment | |
178 | * for inet_ai_family_from_address(). | |
179 | */ | |
180 | int v6only = | |
181 | ((!saddr->has_ipv4 && !saddr->has_ipv6) || | |
182 | (saddr->has_ipv4 && saddr->ipv4 && | |
183 | saddr->has_ipv6 && saddr->ipv6)) ? 0 : 1; | |
184 | int stat; | |
185 | ||
186 | rebind: | |
187 | if (e->ai_family == PF_INET6) { | |
188 | qemu_setsockopt(socket, IPPROTO_IPV6, IPV6_V6ONLY, &v6only, | |
189 | sizeof(v6only)); | |
190 | } | |
191 | ||
192 | stat = bind(socket, e->ai_addr, e->ai_addrlen); | |
193 | if (!stat) { | |
194 | return 0; | |
195 | } | |
196 | ||
197 | /* If we got EADDRINUSE from an IPv6 bind & v6only is unset, | |
198 | * it could be that the IPv4 port is already claimed, so retry | |
199 | * with v6only set | |
200 | */ | |
201 | if (e->ai_family == PF_INET6 && errno == EADDRINUSE && !v6only) { | |
202 | v6only = 1; | |
203 | goto rebind; | |
204 | } | |
205 | return stat; | |
206 | #endif | |
207 | } | |
208 | ||
1856835d DB |
209 | static int inet_listen_saddr(InetSocketAddress *saddr, |
210 | int port_offset, | |
e5b6353c | 211 | int num, |
1856835d | 212 | Error **errp) |
d247d25f AL |
213 | { |
214 | struct addrinfo ai,*res,*e; | |
d247d25f AL |
215 | char port[33]; |
216 | char uaddr[INET6_ADDRSTRLEN+1]; | |
217 | char uport[33]; | |
9cf961bb | 218 | int rc, port_min, port_max, p; |
10a7b7e6 | 219 | int slisten = -1; |
9cf961bb KO |
220 | int saved_errno = 0; |
221 | bool socket_created = false; | |
1856835d | 222 | Error *err = NULL; |
d247d25f | 223 | |
aec21d31 VSO |
224 | if (saddr->keep_alive) { |
225 | error_setg(errp, "keep-alive option is not supported for passive " | |
226 | "sockets"); | |
227 | return -1; | |
228 | } | |
229 | ||
d247d25f | 230 | memset(&ai,0, sizeof(ai)); |
3de3d698 | 231 | ai.ai_flags = AI_PASSIVE; |
6979a813 DB |
232 | if (saddr->has_numeric && saddr->numeric) { |
233 | ai.ai_flags |= AI_NUMERICHOST | AI_NUMERICSERV; | |
234 | } | |
1856835d | 235 | ai.ai_family = inet_ai_family_from_address(saddr, &err); |
e5bc776f | 236 | ai.ai_socktype = SOCK_STREAM; |
d247d25f | 237 | |
1856835d DB |
238 | if (err) { |
239 | error_propagate(errp, err); | |
240 | return -1; | |
241 | } | |
242 | ||
243 | if (saddr->host == NULL) { | |
0983f5e6 | 244 | error_setg(errp, "host not specified"); |
e5bc776f | 245 | return -1; |
d247d25f | 246 | } |
1856835d DB |
247 | if (saddr->port != NULL) { |
248 | pstrcpy(port, sizeof(port), saddr->port); | |
0983f5e6 DB |
249 | } else { |
250 | port[0] = '\0'; | |
251 | } | |
d247d25f AL |
252 | |
253 | /* lookup */ | |
8bc89127 GH |
254 | if (port_offset) { |
255 | unsigned long long baseport; | |
0983f5e6 DB |
256 | if (strlen(port) == 0) { |
257 | error_setg(errp, "port not specified"); | |
258 | return -1; | |
259 | } | |
8bc89127 GH |
260 | if (parse_uint_full(port, &baseport, 10) < 0) { |
261 | error_setg(errp, "can't convert to a number: %s", port); | |
262 | return -1; | |
263 | } | |
264 | if (baseport > 65535 || | |
265 | baseport + port_offset > 65535) { | |
266 | error_setg(errp, "port %s out of range", port); | |
267 | return -1; | |
268 | } | |
269 | snprintf(port, sizeof(port), "%d", (int)baseport + port_offset); | |
270 | } | |
1856835d | 271 | rc = getaddrinfo(strlen(saddr->host) ? saddr->host : NULL, |
0983f5e6 | 272 | strlen(port) ? port : NULL, &ai, &res); |
d247d25f | 273 | if (rc != 0) { |
1856835d DB |
274 | error_setg(errp, "address resolution failed for %s:%s: %s", |
275 | saddr->host, port, gai_strerror(rc)); | |
d247d25f AL |
276 | return -1; |
277 | } | |
d247d25f | 278 | |
9cf961bb | 279 | /* create socket + bind/listen */ |
d247d25f | 280 | for (e = res; e != NULL; e = e->ai_next) { |
8bd1078a DDAG |
281 | #ifdef IPPROTO_MPTCP |
282 | if (saddr->has_mptcp && saddr->mptcp) { | |
283 | e->ai_protocol = IPPROTO_MPTCP; | |
284 | } | |
285 | #endif | |
39b6efc8 | 286 | getnameinfo((struct sockaddr*)e->ai_addr,e->ai_addrlen, |
7d37435b PB |
287 | uaddr,INET6_ADDRSTRLEN,uport,32, |
288 | NI_NUMERICHOST | NI_NUMERICSERV); | |
39f80521 | 289 | |
877691f9 | 290 | port_min = inet_getport(e); |
1856835d | 291 | port_max = saddr->has_to ? saddr->to + port_offset : port_min; |
877691f9 MA |
292 | for (p = port_min; p <= port_max; p++) { |
293 | inet_setport(e, p); | |
10a7b7e6 DB |
294 | |
295 | slisten = create_fast_reuse_socket(e); | |
296 | if (slisten < 0) { | |
297 | /* First time we expect we might fail to create the socket | |
298 | * eg if 'e' has AF_INET6 but ipv6 kmod is not loaded. | |
299 | * Later iterations should always succeed if first iteration | |
300 | * worked though, so treat that as fatal. | |
301 | */ | |
302 | if (p == port_min) { | |
9cf961bb KO |
303 | continue; |
304 | } else { | |
10a7b7e6 DB |
305 | error_setg_errno(errp, errno, |
306 | "Failed to recreate failed listening socket"); | |
9cf961bb | 307 | goto listen_failed; |
029409e5 | 308 | } |
d247d25f | 309 | } |
10a7b7e6 DB |
310 | socket_created = true; |
311 | ||
312 | rc = try_bind(slisten, saddr, e); | |
313 | if (rc < 0) { | |
314 | if (errno != EADDRINUSE) { | |
315 | error_setg_errno(errp, errno, "Failed to bind socket"); | |
316 | goto listen_failed; | |
317 | } | |
318 | } else { | |
e5b6353c | 319 | if (!listen(slisten, num)) { |
10a7b7e6 DB |
320 | goto listen_ok; |
321 | } | |
322 | if (errno != EADDRINUSE) { | |
323 | error_setg_errno(errp, errno, "Failed to listen on socket"); | |
324 | goto listen_failed; | |
325 | } | |
9cf961bb KO |
326 | } |
327 | /* Someone else managed to bind to the same port and beat us | |
328 | * to listen on it! Socket semantics does not allow us to | |
329 | * recover from this situation, so we need to recreate the | |
330 | * socket to allow bind attempts for subsequent ports: | |
331 | */ | |
332 | closesocket(slisten); | |
10a7b7e6 | 333 | slisten = -1; |
d247d25f | 334 | } |
9cf961bb KO |
335 | } |
336 | error_setg_errno(errp, errno, | |
337 | socket_created ? | |
338 | "Failed to find an available port" : | |
339 | "Failed to create a socket"); | |
340 | listen_failed: | |
341 | saved_errno = errno; | |
342 | if (slisten >= 0) { | |
d247d25f AL |
343 | closesocket(slisten); |
344 | } | |
d247d25f | 345 | freeaddrinfo(res); |
9cf961bb | 346 | errno = saved_errno; |
d247d25f AL |
347 | return -1; |
348 | ||
9cf961bb | 349 | listen_ok: |
d247d25f AL |
350 | freeaddrinfo(res); |
351 | return slisten; | |
352 | } | |
353 | ||
05bc1d8a MT |
354 | #ifdef _WIN32 |
355 | #define QEMU_SOCKET_RC_INPROGRESS(rc) \ | |
356 | ((rc) == -EINPROGRESS || (rc) == -EWOULDBLOCK || (rc) == -WSAEALREADY) | |
357 | #else | |
358 | #define QEMU_SOCKET_RC_INPROGRESS(rc) \ | |
359 | ((rc) == -EINPROGRESS) | |
360 | #endif | |
361 | ||
dfc00eb7 DB |
362 | static int inet_connect_addr(const InetSocketAddress *saddr, |
363 | struct addrinfo *addr, Error **errp) | |
233aa5c2 OW |
364 | { |
365 | int sock, rc; | |
366 | ||
05bc1d8a MT |
367 | sock = qemu_socket(addr->ai_family, addr->ai_socktype, addr->ai_protocol); |
368 | if (sock < 0) { | |
dfc00eb7 DB |
369 | error_setg_errno(errp, errno, "Failed to create socket family %d", |
370 | addr->ai_family); | |
05bc1d8a MT |
371 | return -1; |
372 | } | |
04fd1c78 | 373 | socket_set_fast_reuse(sock); |
b2587932 | 374 | |
05bc1d8a MT |
375 | /* connect to peer */ |
376 | do { | |
377 | rc = 0; | |
378 | if (connect(sock, addr->ai_addr, addr->ai_addrlen) < 0) { | |
b16a44e1 | 379 | rc = -errno; |
05bc1d8a MT |
380 | } |
381 | } while (rc == -EINTR); | |
382 | ||
b2587932 | 383 | if (rc < 0) { |
dfc00eb7 DB |
384 | error_setg_errno(errp, errno, "Failed to connect to '%s:%s'", |
385 | saddr->host, saddr->port); | |
05bc1d8a MT |
386 | closesocket(sock); |
387 | return -1; | |
388 | } | |
b2587932 | 389 | |
05bc1d8a MT |
390 | return sock; |
391 | } | |
392 | ||
2942e420 DB |
393 | static struct addrinfo *inet_parse_connect_saddr(InetSocketAddress *saddr, |
394 | Error **errp) | |
05bc1d8a MT |
395 | { |
396 | struct addrinfo ai, *res; | |
397 | int rc; | |
2942e420 | 398 | Error *err = NULL; |
340849a9 | 399 | static int useV4Mapped = 1; |
d247d25f | 400 | |
05bc1d8a | 401 | memset(&ai, 0, sizeof(ai)); |
233aa5c2 | 402 | |
340849a9 | 403 | ai.ai_flags = AI_CANONNAME | AI_ADDRCONFIG; |
d73415a3 | 404 | if (qatomic_read(&useV4Mapped)) { |
340849a9 DB |
405 | ai.ai_flags |= AI_V4MAPPED; |
406 | } | |
2942e420 | 407 | ai.ai_family = inet_ai_family_from_address(saddr, &err); |
f4c94c7c | 408 | ai.ai_socktype = SOCK_STREAM; |
d247d25f | 409 | |
2942e420 DB |
410 | if (err) { |
411 | error_propagate(errp, err); | |
05bc1d8a | 412 | return NULL; |
d247d25f AL |
413 | } |
414 | ||
2942e420 DB |
415 | if (saddr->host == NULL || saddr->port == NULL) { |
416 | error_setg(errp, "host and/or port not specified"); | |
417 | return NULL; | |
05bc1d8a | 418 | } |
d247d25f AL |
419 | |
420 | /* lookup */ | |
2942e420 | 421 | rc = getaddrinfo(saddr->host, saddr->port, &ai, &res); |
340849a9 DB |
422 | |
423 | /* At least FreeBSD and OS-X 10.6 declare AI_V4MAPPED but | |
424 | * then don't implement it in their getaddrinfo(). Detect | |
8cc360b9 | 425 | * this and retry without the flag since that's preferable |
340849a9 DB |
426 | * to a fatal error |
427 | */ | |
428 | if (rc == EAI_BADFLAGS && | |
429 | (ai.ai_flags & AI_V4MAPPED)) { | |
d73415a3 | 430 | qatomic_set(&useV4Mapped, 0); |
340849a9 DB |
431 | ai.ai_flags &= ~AI_V4MAPPED; |
432 | rc = getaddrinfo(saddr->host, saddr->port, &ai, &res); | |
433 | } | |
05bc1d8a | 434 | if (rc != 0) { |
2942e420 DB |
435 | error_setg(errp, "address resolution failed for %s:%s: %s", |
436 | saddr->host, saddr->port, gai_strerror(rc)); | |
05bc1d8a MT |
437 | return NULL; |
438 | } | |
439 | return res; | |
440 | } | |
441 | ||
5db5f44c OW |
442 | /** |
443 | * Create a socket and connect it to an address. | |
444 | * | |
2942e420 | 445 | * @saddr: Inet socket address specification |
5db5f44c OW |
446 | * @errp: set on error |
447 | * | |
448 | * Returns: -1 on error, file descriptor on success. | |
449 | */ | |
b2587932 | 450 | int inet_connect_saddr(InetSocketAddress *saddr, Error **errp) |
05bc1d8a | 451 | { |
3f9286b7 | 452 | Error *local_err = NULL; |
05bc1d8a MT |
453 | struct addrinfo *res, *e; |
454 | int sock = -1; | |
05bc1d8a | 455 | |
2942e420 | 456 | res = inet_parse_connect_saddr(saddr, errp); |
05bc1d8a MT |
457 | if (!res) { |
458 | return -1; | |
459 | } | |
460 | ||
d247d25f | 461 | for (e = res; e != NULL; e = e->ai_next) { |
3f9286b7 MA |
462 | error_free(local_err); |
463 | local_err = NULL; | |
8bd1078a DDAG |
464 | |
465 | #ifdef IPPROTO_MPTCP | |
466 | if (saddr->has_mptcp && saddr->mptcp) { | |
467 | e->ai_protocol = IPPROTO_MPTCP; | |
468 | } | |
469 | #endif | |
470 | ||
dfc00eb7 | 471 | sock = inet_connect_addr(saddr, e, &local_err); |
3f9286b7 | 472 | if (sock >= 0) { |
05bc1d8a | 473 | break; |
a6ba35b3 | 474 | } |
d247d25f | 475 | } |
3f9286b7 | 476 | |
da5e1169 VSO |
477 | freeaddrinfo(res); |
478 | ||
3f9286b7 MA |
479 | if (sock < 0) { |
480 | error_propagate(errp, local_err); | |
da5e1169 | 481 | return sock; |
3f9286b7 | 482 | } |
b2587932 | 483 | |
aec21d31 VSO |
484 | if (saddr->keep_alive) { |
485 | int val = 1; | |
486 | int ret = qemu_setsockopt(sock, SOL_SOCKET, SO_KEEPALIVE, | |
487 | &val, sizeof(val)); | |
488 | ||
489 | if (ret < 0) { | |
490 | error_setg_errno(errp, errno, "Unable to set KEEPALIVE"); | |
491 | close(sock); | |
492 | return -1; | |
493 | } | |
494 | } | |
495 | ||
05bc1d8a | 496 | return sock; |
d247d25f AL |
497 | } |
498 | ||
8b39910e DB |
499 | static int inet_dgram_saddr(InetSocketAddress *sraddr, |
500 | InetSocketAddress *sladdr, | |
501 | Error **errp) | |
7e1b35b4 GH |
502 | { |
503 | struct addrinfo ai, *peer = NULL, *local = NULL; | |
504 | const char *addr; | |
505 | const char *port; | |
7e1b35b4 | 506 | int sock = -1, rc; |
8b39910e | 507 | Error *err = NULL; |
7e1b35b4 GH |
508 | |
509 | /* lookup peer addr */ | |
510 | memset(&ai,0, sizeof(ai)); | |
3de3d698 | 511 | ai.ai_flags = AI_CANONNAME | AI_V4MAPPED | AI_ADDRCONFIG; |
8b39910e | 512 | ai.ai_family = inet_ai_family_from_address(sraddr, &err); |
7e1b35b4 GH |
513 | ai.ai_socktype = SOCK_DGRAM; |
514 | ||
8b39910e DB |
515 | if (err) { |
516 | error_propagate(errp, err); | |
58c652c0 | 517 | goto err; |
8b39910e DB |
518 | } |
519 | ||
520 | addr = sraddr->host; | |
521 | port = sraddr->port; | |
7e1b35b4 GH |
522 | if (addr == NULL || strlen(addr) == 0) { |
523 | addr = "localhost"; | |
524 | } | |
525 | if (port == NULL || strlen(port) == 0) { | |
4f085c82 | 526 | error_setg(errp, "remote port not specified"); |
58c652c0 | 527 | goto err; |
7e1b35b4 GH |
528 | } |
529 | ||
9cd1883c | 530 | if ((rc = getaddrinfo(addr, port, &ai, &peer)) != 0) { |
4f085c82 PB |
531 | error_setg(errp, "address resolution failed for %s:%s: %s", addr, port, |
532 | gai_strerror(rc)); | |
26015051 | 533 | goto err; |
7e1b35b4 | 534 | } |
7e1b35b4 GH |
535 | |
536 | /* lookup local addr */ | |
537 | memset(&ai,0, sizeof(ai)); | |
538 | ai.ai_flags = AI_PASSIVE; | |
539 | ai.ai_family = peer->ai_family; | |
540 | ai.ai_socktype = SOCK_DGRAM; | |
541 | ||
8b39910e DB |
542 | if (sladdr) { |
543 | addr = sladdr->host; | |
544 | port = sladdr->port; | |
545 | if (addr == NULL || strlen(addr) == 0) { | |
546 | addr = NULL; | |
547 | } | |
548 | if (!port || strlen(port) == 0) { | |
549 | port = "0"; | |
550 | } | |
551 | } else { | |
7e1b35b4 | 552 | addr = NULL; |
7e1b35b4 | 553 | port = "0"; |
8b39910e | 554 | } |
7e1b35b4 | 555 | |
9cd1883c | 556 | if ((rc = getaddrinfo(addr, port, &ai, &local)) != 0) { |
4f085c82 PB |
557 | error_setg(errp, "address resolution failed for %s:%s: %s", addr, port, |
558 | gai_strerror(rc)); | |
39b38459 | 559 | goto err; |
7e1b35b4 | 560 | } |
7e1b35b4 GH |
561 | |
562 | /* create socket */ | |
40ff6d7e | 563 | sock = qemu_socket(peer->ai_family, peer->ai_socktype, peer->ai_protocol); |
7e1b35b4 | 564 | if (sock < 0) { |
dfc00eb7 DB |
565 | error_setg_errno(errp, errno, "Failed to create socket family %d", |
566 | peer->ai_family); | |
7e1b35b4 GH |
567 | goto err; |
568 | } | |
04fd1c78 | 569 | socket_set_fast_reuse(sock); |
7e1b35b4 GH |
570 | |
571 | /* bind socket */ | |
7e1b35b4 | 572 | if (bind(sock, local->ai_addr, local->ai_addrlen) < 0) { |
235256a2 | 573 | error_setg_errno(errp, errno, "Failed to bind socket"); |
7e1b35b4 GH |
574 | goto err; |
575 | } | |
576 | ||
577 | /* connect to peer */ | |
7e1b35b4 | 578 | if (connect(sock,peer->ai_addr,peer->ai_addrlen) < 0) { |
dfc00eb7 DB |
579 | error_setg_errno(errp, errno, "Failed to connect to '%s:%s'", |
580 | addr, port); | |
7e1b35b4 GH |
581 | goto err; |
582 | } | |
583 | ||
584 | freeaddrinfo(local); | |
585 | freeaddrinfo(peer); | |
586 | return sock; | |
587 | ||
588 | err: | |
26015051 | 589 | if (sock != -1) { |
7e1b35b4 | 590 | closesocket(sock); |
26015051 C |
591 | } |
592 | if (local) { | |
7e1b35b4 | 593 | freeaddrinfo(local); |
26015051 C |
594 | } |
595 | if (peer) { | |
7e1b35b4 | 596 | freeaddrinfo(peer); |
26015051 C |
597 | } |
598 | ||
7e1b35b4 GH |
599 | return -1; |
600 | } | |
601 | ||
f4c94c7c | 602 | /* compatibility wrapper */ |
3e32370a DB |
603 | static int inet_parse_flag(const char *flagname, const char *optstr, bool *val, |
604 | Error **errp) | |
605 | { | |
606 | char *end; | |
607 | size_t len; | |
608 | ||
609 | end = strstr(optstr, ","); | |
610 | if (end) { | |
611 | if (end[1] == ',') { /* Reject 'ipv6=on,,foo' */ | |
612 | error_setg(errp, "error parsing '%s' flag '%s'", flagname, optstr); | |
613 | return -1; | |
614 | } | |
615 | len = end - optstr; | |
616 | } else { | |
617 | len = strlen(optstr); | |
618 | } | |
619 | if (len == 0 || (len == 3 && strncmp(optstr, "=on", len) == 0)) { | |
620 | *val = true; | |
621 | } else if (len == 4 && strncmp(optstr, "=off", len) == 0) { | |
622 | *val = false; | |
623 | } else { | |
624 | error_setg(errp, "error parsing '%s' flag '%s'", flagname, optstr); | |
625 | return -1; | |
626 | } | |
627 | return 0; | |
628 | } | |
629 | ||
0785bd7a | 630 | int inet_parse(InetSocketAddress *addr, const char *str, Error **errp) |
f4c94c7c GH |
631 | { |
632 | const char *optstr, *h; | |
55a10996 | 633 | char host[65]; |
f4c94c7c | 634 | char port[33]; |
879e45c7 | 635 | int to; |
f4c94c7c | 636 | int pos; |
3e32370a | 637 | char *begin; |
f4c94c7c | 638 | |
0785bd7a | 639 | memset(addr, 0, sizeof(*addr)); |
879e45c7 | 640 | |
f4c94c7c GH |
641 | /* parse address */ |
642 | if (str[0] == ':') { | |
643 | /* no host given */ | |
879e45c7 | 644 | host[0] = '\0'; |
9cd1883c | 645 | if (sscanf(str, ":%32[^,]%n", port, &pos) != 1) { |
2f002c43 | 646 | error_setg(errp, "error parsing port in address '%s'", str); |
0785bd7a | 647 | return -1; |
f4c94c7c GH |
648 | } |
649 | } else if (str[0] == '[') { | |
650 | /* IPv6 addr */ | |
9cd1883c | 651 | if (sscanf(str, "[%64[^]]]:%32[^,]%n", host, port, &pos) != 2) { |
2f002c43 | 652 | error_setg(errp, "error parsing IPv6 address '%s'", str); |
0785bd7a | 653 | return -1; |
f4c94c7c | 654 | } |
f4c94c7c | 655 | } else { |
391b7b97 | 656 | /* hostname or IPv4 addr */ |
9cd1883c | 657 | if (sscanf(str, "%64[^:]:%32[^,]%n", host, port, &pos) != 2) { |
2f002c43 | 658 | error_setg(errp, "error parsing address '%s'", str); |
0785bd7a | 659 | return -1; |
f4c94c7c GH |
660 | } |
661 | } | |
879e45c7 PB |
662 | |
663 | addr->host = g_strdup(host); | |
664 | addr->port = g_strdup(port); | |
f4c94c7c GH |
665 | |
666 | /* parse options */ | |
667 | optstr = str + pos; | |
668 | h = strstr(optstr, ",to="); | |
879e45c7 | 669 | if (h) { |
1ccbc285 AP |
670 | h += 4; |
671 | if (sscanf(h, "%d%n", &to, &pos) != 1 || | |
672 | (h[pos] != '\0' && h[pos] != ',')) { | |
879e45c7 | 673 | error_setg(errp, "error parsing to= argument"); |
0785bd7a | 674 | return -1; |
879e45c7 PB |
675 | } |
676 | addr->has_to = true; | |
677 | addr->to = to; | |
678 | } | |
3e32370a DB |
679 | begin = strstr(optstr, ",ipv4"); |
680 | if (begin) { | |
681 | if (inet_parse_flag("ipv4", begin + 5, &addr->ipv4, errp) < 0) { | |
682 | return -1; | |
683 | } | |
684 | addr->has_ipv4 = true; | |
879e45c7 | 685 | } |
3e32370a DB |
686 | begin = strstr(optstr, ",ipv6"); |
687 | if (begin) { | |
688 | if (inet_parse_flag("ipv6", begin + 5, &addr->ipv6, errp) < 0) { | |
689 | return -1; | |
690 | } | |
691 | addr->has_ipv6 = true; | |
879e45c7 | 692 | } |
aec21d31 VSO |
693 | begin = strstr(optstr, ",keep-alive"); |
694 | if (begin) { | |
695 | if (inet_parse_flag("keep-alive", begin + strlen(",keep-alive"), | |
696 | &addr->keep_alive, errp) < 0) | |
697 | { | |
698 | return -1; | |
699 | } | |
700 | addr->has_keep_alive = true; | |
701 | } | |
8bd1078a DDAG |
702 | #ifdef IPPROTO_MPTCP |
703 | begin = strstr(optstr, ",mptcp"); | |
704 | if (begin) { | |
705 | if (inet_parse_flag("mptcp", begin + strlen(",mptcp"), | |
706 | &addr->mptcp, errp) < 0) | |
707 | { | |
708 | return -1; | |
709 | } | |
710 | addr->has_mptcp = true; | |
711 | } | |
712 | #endif | |
0785bd7a | 713 | return 0; |
879e45c7 PB |
714 | } |
715 | ||
e5bc776f | 716 | |
5db5f44c OW |
717 | /** |
718 | * Create a blocking socket and connect it to an address. | |
719 | * | |
720 | * @str: address string | |
721 | * @errp: set in case of an error | |
722 | * | |
723 | * Returns -1 in case of error, file descriptor on success | |
724 | **/ | |
725 | int inet_connect(const char *str, Error **errp) | |
f4c94c7c | 726 | { |
f4c94c7c | 727 | int sock = -1; |
0785bd7a | 728 | InetSocketAddress *addr = g_new(InetSocketAddress, 1); |
f4c94c7c | 729 | |
0785bd7a | 730 | if (!inet_parse(addr, str, errp)) { |
b2587932 | 731 | sock = inet_connect_saddr(addr, errp); |
5db5f44c | 732 | } |
0785bd7a | 733 | qapi_free_InetSocketAddress(addr); |
5db5f44c OW |
734 | return sock; |
735 | } | |
736 | ||
6a02c806 SH |
737 | #ifdef CONFIG_AF_VSOCK |
738 | static bool vsock_parse_vaddr_to_sockaddr(const VsockSocketAddress *vaddr, | |
739 | struct sockaddr_vm *svm, | |
740 | Error **errp) | |
741 | { | |
742 | unsigned long long val; | |
743 | ||
744 | memset(svm, 0, sizeof(*svm)); | |
745 | svm->svm_family = AF_VSOCK; | |
746 | ||
747 | if (parse_uint_full(vaddr->cid, &val, 10) < 0 || | |
748 | val > UINT32_MAX) { | |
749 | error_setg(errp, "Failed to parse cid '%s'", vaddr->cid); | |
750 | return false; | |
751 | } | |
752 | svm->svm_cid = val; | |
753 | ||
754 | if (parse_uint_full(vaddr->port, &val, 10) < 0 || | |
755 | val > UINT32_MAX) { | |
756 | error_setg(errp, "Failed to parse port '%s'", vaddr->port); | |
757 | return false; | |
758 | } | |
759 | svm->svm_port = val; | |
760 | ||
761 | return true; | |
762 | } | |
763 | ||
dfc00eb7 DB |
764 | static int vsock_connect_addr(const VsockSocketAddress *vaddr, |
765 | const struct sockaddr_vm *svm, Error **errp) | |
6a02c806 SH |
766 | { |
767 | int sock, rc; | |
768 | ||
6a02c806 SH |
769 | sock = qemu_socket(AF_VSOCK, SOCK_STREAM, 0); |
770 | if (sock < 0) { | |
dfc00eb7 DB |
771 | error_setg_errno(errp, errno, "Failed to create socket family %d", |
772 | AF_VSOCK); | |
6a02c806 SH |
773 | return -1; |
774 | } | |
b2587932 | 775 | |
6a02c806 SH |
776 | /* connect to peer */ |
777 | do { | |
778 | rc = 0; | |
779 | if (connect(sock, (const struct sockaddr *)svm, sizeof(*svm)) < 0) { | |
780 | rc = -errno; | |
781 | } | |
782 | } while (rc == -EINTR); | |
783 | ||
b2587932 | 784 | if (rc < 0) { |
dfc00eb7 DB |
785 | error_setg_errno(errp, errno, "Failed to connect to '%s:%s'", |
786 | vaddr->cid, vaddr->port); | |
6a02c806 SH |
787 | closesocket(sock); |
788 | return -1; | |
789 | } | |
b2587932 | 790 | |
6a02c806 SH |
791 | return sock; |
792 | } | |
793 | ||
b2587932 | 794 | static int vsock_connect_saddr(VsockSocketAddress *vaddr, Error **errp) |
6a02c806 SH |
795 | { |
796 | struct sockaddr_vm svm; | |
6a02c806 SH |
797 | |
798 | if (!vsock_parse_vaddr_to_sockaddr(vaddr, &svm, errp)) { | |
799 | return -1; | |
800 | } | |
801 | ||
dfc00eb7 | 802 | return vsock_connect_addr(vaddr, &svm, errp); |
6a02c806 SH |
803 | } |
804 | ||
805 | static int vsock_listen_saddr(VsockSocketAddress *vaddr, | |
e5b6353c | 806 | int num, |
6a02c806 SH |
807 | Error **errp) |
808 | { | |
809 | struct sockaddr_vm svm; | |
810 | int slisten; | |
811 | ||
812 | if (!vsock_parse_vaddr_to_sockaddr(vaddr, &svm, errp)) { | |
813 | return -1; | |
814 | } | |
815 | ||
816 | slisten = qemu_socket(AF_VSOCK, SOCK_STREAM, 0); | |
817 | if (slisten < 0) { | |
818 | error_setg_errno(errp, errno, "Failed to create socket"); | |
819 | return -1; | |
820 | } | |
821 | ||
822 | if (bind(slisten, (const struct sockaddr *)&svm, sizeof(svm)) != 0) { | |
823 | error_setg_errno(errp, errno, "Failed to bind socket"); | |
824 | closesocket(slisten); | |
825 | return -1; | |
826 | } | |
827 | ||
e5b6353c | 828 | if (listen(slisten, num) != 0) { |
6a02c806 SH |
829 | error_setg_errno(errp, errno, "Failed to listen on socket"); |
830 | closesocket(slisten); | |
831 | return -1; | |
832 | } | |
833 | return slisten; | |
834 | } | |
835 | ||
4db5c619 MA |
836 | static int vsock_parse(VsockSocketAddress *addr, const char *str, |
837 | Error **errp) | |
6a02c806 | 838 | { |
6a02c806 SH |
839 | char cid[33]; |
840 | char port[33]; | |
841 | int n; | |
842 | ||
843 | if (sscanf(str, "%32[^:]:%32[^,]%n", cid, port, &n) != 2) { | |
844 | error_setg(errp, "error parsing address '%s'", str); | |
4db5c619 | 845 | return -1; |
6a02c806 SH |
846 | } |
847 | if (str[n] != '\0') { | |
848 | error_setg(errp, "trailing characters in address '%s'", str); | |
4db5c619 | 849 | return -1; |
6a02c806 SH |
850 | } |
851 | ||
6a02c806 SH |
852 | addr->cid = g_strdup(cid); |
853 | addr->port = g_strdup(port); | |
4db5c619 | 854 | return 0; |
6a02c806 SH |
855 | } |
856 | #else | |
857 | static void vsock_unsupported(Error **errp) | |
858 | { | |
859 | error_setg(errp, "socket family AF_VSOCK unsupported"); | |
860 | } | |
861 | ||
b2587932 | 862 | static int vsock_connect_saddr(VsockSocketAddress *vaddr, Error **errp) |
6a02c806 SH |
863 | { |
864 | vsock_unsupported(errp); | |
865 | return -1; | |
866 | } | |
867 | ||
868 | static int vsock_listen_saddr(VsockSocketAddress *vaddr, | |
e5b6353c | 869 | int num, |
6a02c806 SH |
870 | Error **errp) |
871 | { | |
872 | vsock_unsupported(errp); | |
873 | return -1; | |
874 | } | |
875 | ||
4db5c619 MA |
876 | static int vsock_parse(VsockSocketAddress *addr, const char *str, |
877 | Error **errp) | |
6a02c806 SH |
878 | { |
879 | vsock_unsupported(errp); | |
4db5c619 | 880 | return -1; |
6a02c806 SH |
881 | } |
882 | #endif /* CONFIG_AF_VSOCK */ | |
883 | ||
d247d25f AL |
884 | #ifndef _WIN32 |
885 | ||
8acefc79 MA |
886 | static bool saddr_is_abstract(UnixSocketAddress *saddr) |
887 | { | |
888 | #ifdef CONFIG_LINUX | |
889 | return saddr->abstract; | |
890 | #else | |
891 | return false; | |
892 | #endif | |
893 | } | |
894 | ||
895 | static bool saddr_is_tight(UnixSocketAddress *saddr) | |
896 | { | |
897 | #ifdef CONFIG_LINUX | |
898 | return !saddr->has_tight || saddr->tight; | |
899 | #else | |
900 | return false; | |
901 | #endif | |
902 | } | |
903 | ||
1856835d | 904 | static int unix_listen_saddr(UnixSocketAddress *saddr, |
e5b6353c | 905 | int num, |
1856835d | 906 | Error **errp) |
d247d25f | 907 | { |
8acefc79 | 908 | bool abstract = saddr_is_abstract(saddr); |
d247d25f | 909 | struct sockaddr_un un; |
62b6adfb | 910 | int sock, fd; |
ad9579aa DB |
911 | char *pathbuf = NULL; |
912 | const char *path; | |
2d2023c3 | 913 | size_t pathlen; |
776b97d3 | 914 | size_t addrlen; |
d247d25f | 915 | |
40ff6d7e | 916 | sock = qemu_socket(PF_UNIX, SOCK_STREAM, 0); |
d247d25f | 917 | if (sock < 0) { |
b658c53d | 918 | error_setg_errno(errp, errno, "Failed to create Unix socket"); |
39b6efc8 | 919 | return -1; |
d247d25f AL |
920 | } |
921 | ||
8acefc79 | 922 | if (saddr->path[0] || abstract) { |
ad9579aa | 923 | path = saddr->path; |
d247d25f | 924 | } else { |
b658c53d PB |
925 | const char *tmpdir = getenv("TMPDIR"); |
926 | tmpdir = tmpdir ? tmpdir : "/tmp"; | |
ad9579aa DB |
927 | path = pathbuf = g_strdup_printf("%s/qemu-socket-XXXXXX", tmpdir); |
928 | } | |
b658c53d | 929 | |
2d2023c3 | 930 | pathlen = strlen(path); |
776b97d3 | 931 | if (pathlen > sizeof(un.sun_path) || |
8acefc79 | 932 | (abstract && pathlen > (sizeof(un.sun_path) - 1))) { |
ad9579aa DB |
933 | error_setg(errp, "UNIX socket path '%s' is too long", path); |
934 | error_append_hint(errp, "Path must be less than %zu bytes\n", | |
8acefc79 | 935 | abstract ? sizeof(un.sun_path) - 1 : |
ad9579aa DB |
936 | sizeof(un.sun_path)); |
937 | goto err; | |
938 | } | |
939 | ||
940 | if (pathbuf != NULL) { | |
d247d25f AL |
941 | /* |
942 | * This dummy fd usage silences the mktemp() unsecure warning. | |
943 | * Using mkstemp() doesn't make things more secure here | |
944 | * though. bind() complains about existing files, so we have | |
945 | * to unlink first and thus re-open the race window. The | |
946 | * worst case possible is bind() failing, i.e. a DoS attack. | |
947 | */ | |
ad9579aa | 948 | fd = mkstemp(pathbuf); |
b658c53d PB |
949 | if (fd < 0) { |
950 | error_setg_errno(errp, errno, | |
ad9579aa | 951 | "Failed to make a temporary socket %s", pathbuf); |
b658c53d PB |
952 | goto err; |
953 | } | |
954 | close(fd); | |
d247d25f | 955 | } |
d247d25f | 956 | |
8acefc79 | 957 | if (!abstract && unlink(path) < 0 && errno != ENOENT) { |
0ef705a2 | 958 | error_setg_errno(errp, errno, |
ad9579aa | 959 | "Failed to unlink socket %s", path); |
0ef705a2 CR |
960 | goto err; |
961 | } | |
ad9579aa DB |
962 | |
963 | memset(&un, 0, sizeof(un)); | |
964 | un.sun_family = AF_UNIX; | |
776b97d3 | 965 | addrlen = sizeof(un); |
ad9579aa | 966 | |
8acefc79 | 967 | if (abstract) { |
776b97d3 XZ |
968 | un.sun_path[0] = '\0'; |
969 | memcpy(&un.sun_path[1], path, pathlen); | |
8acefc79 | 970 | if (saddr_is_tight(saddr)) { |
776b97d3 XZ |
971 | addrlen = offsetof(struct sockaddr_un, sun_path) + 1 + pathlen; |
972 | } | |
973 | } else { | |
974 | memcpy(un.sun_path, path, pathlen); | |
975 | } | |
976 | ||
977 | if (bind(sock, (struct sockaddr *) &un, addrlen) < 0) { | |
56382bd5 | 978 | error_setg_errno(errp, errno, "Failed to bind socket to %s", path); |
d247d25f AL |
979 | goto err; |
980 | } | |
e5b6353c | 981 | if (listen(sock, num) < 0) { |
235256a2 | 982 | error_setg_errno(errp, errno, "Failed to listen on socket"); |
d247d25f AL |
983 | goto err; |
984 | } | |
985 | ||
62473511 | 986 | g_free(pathbuf); |
d247d25f AL |
987 | return sock; |
988 | ||
989 | err: | |
ad9579aa | 990 | g_free(pathbuf); |
d247d25f AL |
991 | closesocket(sock); |
992 | return -1; | |
993 | } | |
994 | ||
b2587932 | 995 | static int unix_connect_saddr(UnixSocketAddress *saddr, Error **errp) |
d247d25f | 996 | { |
8acefc79 | 997 | bool abstract = saddr_is_abstract(saddr); |
d247d25f | 998 | struct sockaddr_un un; |
1fc05adf | 999 | int sock, rc; |
2d2023c3 | 1000 | size_t pathlen; |
776b97d3 | 1001 | size_t addrlen; |
d247d25f | 1002 | |
2942e420 | 1003 | if (saddr->path == NULL) { |
312fd5f2 | 1004 | error_setg(errp, "unix connect: no path specified"); |
2af2bf67 GH |
1005 | return -1; |
1006 | } | |
1007 | ||
40ff6d7e | 1008 | sock = qemu_socket(PF_UNIX, SOCK_STREAM, 0); |
d247d25f | 1009 | if (sock < 0) { |
235256a2 | 1010 | error_setg_errno(errp, errno, "Failed to create socket"); |
39b6efc8 | 1011 | return -1; |
d247d25f AL |
1012 | } |
1013 | ||
2d2023c3 | 1014 | pathlen = strlen(saddr->path); |
776b97d3 | 1015 | if (pathlen > sizeof(un.sun_path) || |
8acefc79 | 1016 | (abstract && pathlen > (sizeof(un.sun_path) - 1))) { |
ad9579aa DB |
1017 | error_setg(errp, "UNIX socket path '%s' is too long", saddr->path); |
1018 | error_append_hint(errp, "Path must be less than %zu bytes\n", | |
8acefc79 | 1019 | abstract ? sizeof(un.sun_path) - 1 : |
ad9579aa DB |
1020 | sizeof(un.sun_path)); |
1021 | goto err; | |
1022 | } | |
1023 | ||
d247d25f AL |
1024 | memset(&un, 0, sizeof(un)); |
1025 | un.sun_family = AF_UNIX; | |
776b97d3 | 1026 | addrlen = sizeof(un); |
1fc05adf | 1027 | |
8acefc79 | 1028 | if (abstract) { |
776b97d3 XZ |
1029 | un.sun_path[0] = '\0'; |
1030 | memcpy(&un.sun_path[1], saddr->path, pathlen); | |
8acefc79 | 1031 | if (saddr_is_tight(saddr)) { |
776b97d3 XZ |
1032 | addrlen = offsetof(struct sockaddr_un, sun_path) + 1 + pathlen; |
1033 | } | |
1034 | } else { | |
1035 | memcpy(un.sun_path, saddr->path, pathlen); | |
1036 | } | |
1fc05adf PB |
1037 | /* connect to peer */ |
1038 | do { | |
1039 | rc = 0; | |
776b97d3 | 1040 | if (connect(sock, (struct sockaddr *) &un, addrlen) < 0) { |
b16a44e1 | 1041 | rc = -errno; |
1fc05adf PB |
1042 | } |
1043 | } while (rc == -EINTR); | |
1044 | ||
1fc05adf | 1045 | if (rc < 0) { |
dfc00eb7 | 1046 | error_setg_errno(errp, -rc, "Failed to connect to '%s'", |
ad9579aa DB |
1047 | saddr->path); |
1048 | goto err; | |
d247d25f AL |
1049 | } |
1050 | ||
d247d25f | 1051 | return sock; |
ad9579aa DB |
1052 | |
1053 | err: | |
1054 | close(sock); | |
ad9579aa | 1055 | return -1; |
d247d25f AL |
1056 | } |
1057 | ||
0c814709 PB |
1058 | #else |
1059 | ||
1856835d | 1060 | static int unix_listen_saddr(UnixSocketAddress *saddr, |
e5b6353c | 1061 | int num, |
1856835d | 1062 | Error **errp) |
0c814709 | 1063 | { |
58899664 | 1064 | error_setg(errp, "unix sockets are not available on windows"); |
0c814709 PB |
1065 | errno = ENOTSUP; |
1066 | return -1; | |
1067 | } | |
1068 | ||
b2587932 | 1069 | static int unix_connect_saddr(UnixSocketAddress *saddr, Error **errp) |
0c814709 | 1070 | { |
58899664 | 1071 | error_setg(errp, "unix sockets are not available on windows"); |
0c814709 PB |
1072 | errno = ENOTSUP; |
1073 | return -1; | |
1074 | } | |
1075 | #endif | |
1076 | ||
2af2bf67 | 1077 | /* compatibility wrapper */ |
62473511 | 1078 | int unix_listen(const char *str, Error **errp) |
62b6adfb | 1079 | { |
1856835d | 1080 | UnixSocketAddress *saddr; |
caf88d74 | 1081 | int sock; |
62b6adfb | 1082 | |
1856835d | 1083 | saddr = g_new0(UnixSocketAddress, 1); |
caf88d74 | 1084 | saddr->path = g_strdup(str); |
e5b6353c | 1085 | sock = unix_listen_saddr(saddr, 1, errp); |
1856835d | 1086 | qapi_free_UnixSocketAddress(saddr); |
62b6adfb GH |
1087 | return sock; |
1088 | } | |
1089 | ||
7fc4e63e | 1090 | int unix_connect(const char *path, Error **errp) |
2af2bf67 | 1091 | { |
2942e420 | 1092 | UnixSocketAddress *saddr; |
2af2bf67 GH |
1093 | int sock; |
1094 | ||
2942e420 DB |
1095 | saddr = g_new0(UnixSocketAddress, 1); |
1096 | saddr->path = g_strdup(path); | |
b2587932 | 1097 | sock = unix_connect_saddr(saddr, errp); |
2942e420 | 1098 | qapi_free_UnixSocketAddress(saddr); |
1fc05adf PB |
1099 | return sock; |
1100 | } | |
1101 | ||
1102 | ||
bd269ebc | 1103 | SocketAddress *socket_parse(const char *str, Error **errp) |
101f9cbc | 1104 | { |
bd269ebc | 1105 | SocketAddress *addr; |
101f9cbc | 1106 | |
bd269ebc | 1107 | addr = g_new0(SocketAddress, 1); |
101f9cbc PB |
1108 | if (strstart(str, "unix:", NULL)) { |
1109 | if (str[5] == '\0') { | |
312fd5f2 | 1110 | error_setg(errp, "invalid Unix socket address"); |
101f9cbc PB |
1111 | goto fail; |
1112 | } else { | |
bd269ebc MA |
1113 | addr->type = SOCKET_ADDRESS_TYPE_UNIX; |
1114 | addr->u.q_unix.path = g_strdup(str + 5); | |
101f9cbc PB |
1115 | } |
1116 | } else if (strstart(str, "fd:", NULL)) { | |
1117 | if (str[3] == '\0') { | |
312fd5f2 | 1118 | error_setg(errp, "invalid file descriptor address"); |
101f9cbc PB |
1119 | goto fail; |
1120 | } else { | |
bd269ebc MA |
1121 | addr->type = SOCKET_ADDRESS_TYPE_FD; |
1122 | addr->u.fd.str = g_strdup(str + 3); | |
101f9cbc | 1123 | } |
6a02c806 | 1124 | } else if (strstart(str, "vsock:", NULL)) { |
bd269ebc MA |
1125 | addr->type = SOCKET_ADDRESS_TYPE_VSOCK; |
1126 | if (vsock_parse(&addr->u.vsock, str + strlen("vsock:"), errp)) { | |
6a02c806 SH |
1127 | goto fail; |
1128 | } | |
101f9cbc | 1129 | } else { |
bd269ebc MA |
1130 | addr->type = SOCKET_ADDRESS_TYPE_INET; |
1131 | if (inet_parse(&addr->u.inet, str, errp)) { | |
101f9cbc PB |
1132 | goto fail; |
1133 | } | |
1134 | } | |
1135 | return addr; | |
1136 | ||
1137 | fail: | |
bd269ebc | 1138 | qapi_free_SocketAddress(addr); |
101f9cbc PB |
1139 | return NULL; |
1140 | } | |
1141 | ||
37179e9e | 1142 | static int socket_get_fd(const char *fdstr, Error **errp) |
30bdb3c5 | 1143 | { |
947e4744 | 1144 | Monitor *cur_mon = monitor_cur(); |
1723d6b1 DB |
1145 | int fd; |
1146 | if (cur_mon) { | |
1147 | fd = monitor_get_fd(cur_mon, fdstr, errp); | |
1148 | if (fd < 0) { | |
1149 | return -1; | |
1150 | } | |
1151 | } else { | |
1152 | if (qemu_strtoi(fdstr, NULL, 10, &fd) < 0) { | |
1153 | error_setg_errno(errp, errno, | |
1154 | "Unable to parse FD number %s", | |
1155 | fdstr); | |
1156 | return -1; | |
1157 | } | |
30bdb3c5 DB |
1158 | } |
1159 | if (!fd_is_socket(fd)) { | |
1160 | error_setg(errp, "File descriptor '%s' is not a socket", fdstr); | |
1161 | close(fd); | |
1162 | return -1; | |
1163 | } | |
1164 | return fd; | |
1165 | } | |
1166 | ||
c5423704 VSO |
1167 | int socket_address_parse_named_fd(SocketAddress *addr, Error **errp) |
1168 | { | |
1169 | int fd; | |
1170 | ||
1171 | if (addr->type != SOCKET_ADDRESS_TYPE_FD) { | |
1172 | return 0; | |
1173 | } | |
1174 | ||
1175 | fd = socket_get_fd(addr->u.fd.str, errp); | |
1176 | if (fd < 0) { | |
1177 | return fd; | |
1178 | } | |
1179 | ||
1180 | g_free(addr->u.fd.str); | |
1181 | addr->u.fd.str = g_strdup_printf("%d", fd); | |
1182 | ||
1183 | return 0; | |
1184 | } | |
1185 | ||
b2587932 | 1186 | int socket_connect(SocketAddress *addr, Error **errp) |
101f9cbc | 1187 | { |
101f9cbc PB |
1188 | int fd; |
1189 | ||
2d32adda | 1190 | switch (addr->type) { |
bd269ebc | 1191 | case SOCKET_ADDRESS_TYPE_INET: |
b2587932 | 1192 | fd = inet_connect_saddr(&addr->u.inet, errp); |
101f9cbc PB |
1193 | break; |
1194 | ||
bd269ebc | 1195 | case SOCKET_ADDRESS_TYPE_UNIX: |
b2587932 | 1196 | fd = unix_connect_saddr(&addr->u.q_unix, errp); |
101f9cbc PB |
1197 | break; |
1198 | ||
bd269ebc | 1199 | case SOCKET_ADDRESS_TYPE_FD: |
37179e9e | 1200 | fd = socket_get_fd(addr->u.fd.str, errp); |
101f9cbc PB |
1201 | break; |
1202 | ||
bd269ebc | 1203 | case SOCKET_ADDRESS_TYPE_VSOCK: |
b2587932 | 1204 | fd = vsock_connect_saddr(&addr->u.vsock, errp); |
6a02c806 SH |
1205 | break; |
1206 | ||
101f9cbc PB |
1207 | default: |
1208 | abort(); | |
1209 | } | |
101f9cbc PB |
1210 | return fd; |
1211 | } | |
1212 | ||
e5b6353c | 1213 | int socket_listen(SocketAddress *addr, int num, Error **errp) |
101f9cbc | 1214 | { |
101f9cbc PB |
1215 | int fd; |
1216 | ||
e5b6353c | 1217 | trace_socket_listen(num); |
2d32adda | 1218 | switch (addr->type) { |
bd269ebc | 1219 | case SOCKET_ADDRESS_TYPE_INET: |
e5b6353c | 1220 | fd = inet_listen_saddr(&addr->u.inet, 0, num, errp); |
101f9cbc PB |
1221 | break; |
1222 | ||
bd269ebc | 1223 | case SOCKET_ADDRESS_TYPE_UNIX: |
e5b6353c | 1224 | fd = unix_listen_saddr(&addr->u.q_unix, num, errp); |
101f9cbc PB |
1225 | break; |
1226 | ||
bd269ebc | 1227 | case SOCKET_ADDRESS_TYPE_FD: |
37179e9e SH |
1228 | fd = socket_get_fd(addr->u.fd.str, errp); |
1229 | if (fd < 0) { | |
1230 | return -1; | |
1231 | } | |
1232 | ||
1233 | /* | |
1234 | * If the socket is not yet in the listen state, then transition it to | |
1235 | * the listen state now. | |
1236 | * | |
1237 | * If it's already listening then this updates the backlog value as | |
1238 | * requested. | |
1239 | * | |
1240 | * If this socket cannot listen because it's already in another state | |
1241 | * (e.g. unbound or connected) then we'll catch the error here. | |
1242 | */ | |
1243 | if (listen(fd, num) != 0) { | |
1244 | error_setg_errno(errp, errno, "Failed to listen on fd socket"); | |
1245 | closesocket(fd); | |
1246 | return -1; | |
1247 | } | |
101f9cbc PB |
1248 | break; |
1249 | ||
bd269ebc | 1250 | case SOCKET_ADDRESS_TYPE_VSOCK: |
e5b6353c | 1251 | fd = vsock_listen_saddr(&addr->u.vsock, num, errp); |
6a02c806 SH |
1252 | break; |
1253 | ||
101f9cbc PB |
1254 | default: |
1255 | abort(); | |
1256 | } | |
101f9cbc PB |
1257 | return fd; |
1258 | } | |
1259 | ||
74b6ce43 MAL |
1260 | void socket_listen_cleanup(int fd, Error **errp) |
1261 | { | |
bd269ebc | 1262 | SocketAddress *addr; |
74b6ce43 MAL |
1263 | |
1264 | addr = socket_local_address(fd, errp); | |
2d7ad7c0 DB |
1265 | if (!addr) { |
1266 | return; | |
1267 | } | |
74b6ce43 | 1268 | |
bd269ebc MA |
1269 | if (addr->type == SOCKET_ADDRESS_TYPE_UNIX |
1270 | && addr->u.q_unix.path) { | |
1271 | if (unlink(addr->u.q_unix.path) < 0 && errno != ENOENT) { | |
74b6ce43 MAL |
1272 | error_setg_errno(errp, errno, |
1273 | "Failed to unlink socket %s", | |
bd269ebc | 1274 | addr->u.q_unix.path); |
74b6ce43 MAL |
1275 | } |
1276 | } | |
1277 | ||
bd269ebc | 1278 | qapi_free_SocketAddress(addr); |
74b6ce43 MAL |
1279 | } |
1280 | ||
bd269ebc | 1281 | int socket_dgram(SocketAddress *remote, SocketAddress *local, Error **errp) |
3ecc059d | 1282 | { |
3ecc059d GH |
1283 | int fd; |
1284 | ||
ca0b64e5 | 1285 | /* |
bd269ebc | 1286 | * TODO SOCKET_ADDRESS_TYPE_FD when fd is AF_INET or AF_INET6 |
ca0b64e5 MA |
1287 | * (although other address families can do SOCK_DGRAM, too) |
1288 | */ | |
2d32adda | 1289 | switch (remote->type) { |
bd269ebc MA |
1290 | case SOCKET_ADDRESS_TYPE_INET: |
1291 | fd = inet_dgram_saddr(&remote->u.inet, | |
1292 | local ? &local->u.inet : NULL, errp); | |
3ecc059d GH |
1293 | break; |
1294 | ||
1295 | default: | |
1296 | error_setg(errp, "socket type unsupported for datagram"); | |
7a5b6af1 | 1297 | fd = -1; |
3ecc059d | 1298 | } |
3ecc059d GH |
1299 | return fd; |
1300 | } | |
17c55dec DB |
1301 | |
1302 | ||
bd269ebc | 1303 | static SocketAddress * |
17c55dec DB |
1304 | socket_sockaddr_to_address_inet(struct sockaddr_storage *sa, |
1305 | socklen_t salen, | |
1306 | Error **errp) | |
1307 | { | |
1308 | char host[NI_MAXHOST]; | |
1309 | char serv[NI_MAXSERV]; | |
bd269ebc | 1310 | SocketAddress *addr; |
0399293e | 1311 | InetSocketAddress *inet; |
17c55dec DB |
1312 | int ret; |
1313 | ||
1314 | ret = getnameinfo((struct sockaddr *)sa, salen, | |
1315 | host, sizeof(host), | |
1316 | serv, sizeof(serv), | |
1317 | NI_NUMERICHOST | NI_NUMERICSERV); | |
1318 | if (ret != 0) { | |
1319 | error_setg(errp, "Cannot format numeric socket address: %s", | |
1320 | gai_strerror(ret)); | |
1321 | return NULL; | |
1322 | } | |
1323 | ||
bd269ebc MA |
1324 | addr = g_new0(SocketAddress, 1); |
1325 | addr->type = SOCKET_ADDRESS_TYPE_INET; | |
1326 | inet = &addr->u.inet; | |
0399293e EB |
1327 | inet->host = g_strdup(host); |
1328 | inet->port = g_strdup(serv); | |
17c55dec | 1329 | if (sa->ss_family == AF_INET) { |
0399293e | 1330 | inet->has_ipv4 = inet->ipv4 = true; |
17c55dec | 1331 | } else { |
0399293e | 1332 | inet->has_ipv6 = inet->ipv6 = true; |
17c55dec DB |
1333 | } |
1334 | ||
1335 | return addr; | |
1336 | } | |
1337 | ||
1338 | ||
1339 | #ifndef WIN32 | |
bd269ebc | 1340 | static SocketAddress * |
17c55dec DB |
1341 | socket_sockaddr_to_address_unix(struct sockaddr_storage *sa, |
1342 | socklen_t salen, | |
1343 | Error **errp) | |
1344 | { | |
bd269ebc | 1345 | SocketAddress *addr; |
17c55dec DB |
1346 | struct sockaddr_un *su = (struct sockaddr_un *)sa; |
1347 | ||
4cfd970e MAL |
1348 | assert(salen >= sizeof(su->sun_family) + 1 && |
1349 | salen <= sizeof(struct sockaddr_un)); | |
1350 | ||
bd269ebc MA |
1351 | addr = g_new0(SocketAddress, 1); |
1352 | addr->type = SOCKET_ADDRESS_TYPE_UNIX; | |
3b14b4ec MA |
1353 | #ifdef CONFIG_LINUX |
1354 | if (!su->sun_path[0]) { | |
1355 | /* Linux abstract socket */ | |
1356 | addr->u.q_unix.path = g_strndup(su->sun_path + 1, | |
4cfd970e | 1357 | salen - sizeof(su->sun_family) - 1); |
3b14b4ec MA |
1358 | addr->u.q_unix.has_abstract = true; |
1359 | addr->u.q_unix.abstract = true; | |
1360 | addr->u.q_unix.has_tight = true; | |
1361 | addr->u.q_unix.tight = salen < sizeof(*su); | |
1362 | return addr; | |
17c55dec | 1363 | } |
3b14b4ec | 1364 | #endif |
17c55dec | 1365 | |
3b14b4ec | 1366 | addr->u.q_unix.path = g_strndup(su->sun_path, sizeof(su->sun_path)); |
17c55dec DB |
1367 | return addr; |
1368 | } | |
1369 | #endif /* WIN32 */ | |
1370 | ||
6a02c806 | 1371 | #ifdef CONFIG_AF_VSOCK |
bd269ebc | 1372 | static SocketAddress * |
6a02c806 SH |
1373 | socket_sockaddr_to_address_vsock(struct sockaddr_storage *sa, |
1374 | socklen_t salen, | |
1375 | Error **errp) | |
1376 | { | |
bd269ebc | 1377 | SocketAddress *addr; |
6a02c806 SH |
1378 | VsockSocketAddress *vaddr; |
1379 | struct sockaddr_vm *svm = (struct sockaddr_vm *)sa; | |
1380 | ||
bd269ebc MA |
1381 | addr = g_new0(SocketAddress, 1); |
1382 | addr->type = SOCKET_ADDRESS_TYPE_VSOCK; | |
1383 | vaddr = &addr->u.vsock; | |
6a02c806 SH |
1384 | vaddr->cid = g_strdup_printf("%u", svm->svm_cid); |
1385 | vaddr->port = g_strdup_printf("%u", svm->svm_port); | |
1386 | ||
1387 | return addr; | |
1388 | } | |
1389 | #endif /* CONFIG_AF_VSOCK */ | |
1390 | ||
bd269ebc | 1391 | SocketAddress * |
17c55dec DB |
1392 | socket_sockaddr_to_address(struct sockaddr_storage *sa, |
1393 | socklen_t salen, | |
1394 | Error **errp) | |
1395 | { | |
1396 | switch (sa->ss_family) { | |
1397 | case AF_INET: | |
1398 | case AF_INET6: | |
1399 | return socket_sockaddr_to_address_inet(sa, salen, errp); | |
1400 | ||
1401 | #ifndef WIN32 | |
1402 | case AF_UNIX: | |
1403 | return socket_sockaddr_to_address_unix(sa, salen, errp); | |
1404 | #endif /* WIN32 */ | |
1405 | ||
6a02c806 SH |
1406 | #ifdef CONFIG_AF_VSOCK |
1407 | case AF_VSOCK: | |
1408 | return socket_sockaddr_to_address_vsock(sa, salen, errp); | |
1409 | #endif | |
1410 | ||
17c55dec DB |
1411 | default: |
1412 | error_setg(errp, "socket family %d unsupported", | |
1413 | sa->ss_family); | |
1414 | return NULL; | |
1415 | } | |
1416 | return 0; | |
1417 | } | |
1418 | ||
1419 | ||
bd269ebc | 1420 | SocketAddress *socket_local_address(int fd, Error **errp) |
17c55dec DB |
1421 | { |
1422 | struct sockaddr_storage ss; | |
1423 | socklen_t sslen = sizeof(ss); | |
1424 | ||
1425 | if (getsockname(fd, (struct sockaddr *)&ss, &sslen) < 0) { | |
b16a44e1 | 1426 | error_setg_errno(errp, errno, "%s", |
17c55dec DB |
1427 | "Unable to query local socket address"); |
1428 | return NULL; | |
1429 | } | |
1430 | ||
1431 | return socket_sockaddr_to_address(&ss, sslen, errp); | |
1432 | } | |
1433 | ||
1434 | ||
bd269ebc | 1435 | SocketAddress *socket_remote_address(int fd, Error **errp) |
17c55dec DB |
1436 | { |
1437 | struct sockaddr_storage ss; | |
1438 | socklen_t sslen = sizeof(ss); | |
1439 | ||
1440 | if (getpeername(fd, (struct sockaddr *)&ss, &sslen) < 0) { | |
b16a44e1 | 1441 | error_setg_errno(errp, errno, "%s", |
17c55dec DB |
1442 | "Unable to query remote socket address"); |
1443 | return NULL; | |
1444 | } | |
1445 | ||
1446 | return socket_sockaddr_to_address(&ss, sslen, errp); | |
1447 | } | |
2a8e21c7 | 1448 | |
216411b8 | 1449 | |
bd269ebc MA |
1450 | SocketAddress *socket_address_flatten(SocketAddressLegacy *addr_legacy) |
1451 | { | |
fc0f0059 | 1452 | SocketAddress *addr; |
bd269ebc MA |
1453 | |
1454 | if (!addr_legacy) { | |
1455 | return NULL; | |
1456 | } | |
1457 | ||
fc0f0059 MA |
1458 | addr = g_new(SocketAddress, 1); |
1459 | ||
bd269ebc MA |
1460 | switch (addr_legacy->type) { |
1461 | case SOCKET_ADDRESS_LEGACY_KIND_INET: | |
1462 | addr->type = SOCKET_ADDRESS_TYPE_INET; | |
1463 | QAPI_CLONE_MEMBERS(InetSocketAddress, &addr->u.inet, | |
1464 | addr_legacy->u.inet.data); | |
1465 | break; | |
1466 | case SOCKET_ADDRESS_LEGACY_KIND_UNIX: | |
1467 | addr->type = SOCKET_ADDRESS_TYPE_UNIX; | |
1468 | QAPI_CLONE_MEMBERS(UnixSocketAddress, &addr->u.q_unix, | |
1469 | addr_legacy->u.q_unix.data); | |
1470 | break; | |
1471 | case SOCKET_ADDRESS_LEGACY_KIND_VSOCK: | |
1472 | addr->type = SOCKET_ADDRESS_TYPE_VSOCK; | |
1473 | QAPI_CLONE_MEMBERS(VsockSocketAddress, &addr->u.vsock, | |
1474 | addr_legacy->u.vsock.data); | |
1475 | break; | |
1476 | case SOCKET_ADDRESS_LEGACY_KIND_FD: | |
1477 | addr->type = SOCKET_ADDRESS_TYPE_FD; | |
1478 | QAPI_CLONE_MEMBERS(String, &addr->u.fd, addr_legacy->u.fd.data); | |
1479 | break; | |
1480 | default: | |
1481 | abort(); | |
1482 | } | |
1483 | ||
1484 | return addr; | |
1485 | } |