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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" |
bd269ebc | 25 | #include "qapi/clone-visitor.h" |
da34e65c | 26 | #include "qapi/error.h" |
9af23989 | 27 | #include "qapi/qapi-visit-sockets.h" |
1de7afc9 | 28 | #include "qemu/sockets.h" |
1de7afc9 | 29 | #include "qemu/main-loop.h" |
b3db211f DB |
30 | #include "qapi/qobject-input-visitor.h" |
31 | #include "qapi/qobject-output-visitor.h" | |
f348b6d1 | 32 | #include "qemu/cutils.h" |
e5b6353c | 33 | #include "trace.h" |
d247d25f AL |
34 | |
35 | #ifndef AI_ADDRCONFIG | |
36 | # define AI_ADDRCONFIG 0 | |
37 | #endif | |
340849a9 | 38 | |
3de3d698 WB |
39 | #ifndef AI_V4MAPPED |
40 | # define AI_V4MAPPED 0 | |
41 | #endif | |
d247d25f | 42 | |
6979a813 DB |
43 | #ifndef AI_NUMERICSERV |
44 | # define AI_NUMERICSERV 0 | |
45 | #endif | |
46 | ||
2af2bf67 | 47 | |
d247d25f AL |
48 | static int inet_getport(struct addrinfo *e) |
49 | { | |
50 | struct sockaddr_in *i4; | |
51 | struct sockaddr_in6 *i6; | |
52 | ||
53 | switch (e->ai_family) { | |
54 | case PF_INET6: | |
55 | i6 = (void*)e->ai_addr; | |
56 | return ntohs(i6->sin6_port); | |
57 | case PF_INET: | |
58 | i4 = (void*)e->ai_addr; | |
59 | return ntohs(i4->sin_port); | |
60 | default: | |
61 | return 0; | |
62 | } | |
63 | } | |
64 | ||
65 | static void inet_setport(struct addrinfo *e, int port) | |
66 | { | |
67 | struct sockaddr_in *i4; | |
68 | struct sockaddr_in6 *i6; | |
69 | ||
70 | switch (e->ai_family) { | |
71 | case PF_INET6: | |
72 | i6 = (void*)e->ai_addr; | |
73 | i6->sin6_port = htons(port); | |
74 | break; | |
75 | case PF_INET: | |
76 | i4 = (void*)e->ai_addr; | |
77 | i4->sin_port = htons(port); | |
78 | break; | |
79 | } | |
80 | } | |
81 | ||
a589569f WX |
82 | NetworkAddressFamily inet_netfamily(int family) |
83 | { | |
84 | switch (family) { | |
85 | case PF_INET6: return NETWORK_ADDRESS_FAMILY_IPV6; | |
86 | case PF_INET: return NETWORK_ADDRESS_FAMILY_IPV4; | |
87 | case PF_UNIX: return NETWORK_ADDRESS_FAMILY_UNIX; | |
6a02c806 SH |
88 | #ifdef CONFIG_AF_VSOCK |
89 | case PF_VSOCK: return NETWORK_ADDRESS_FAMILY_VSOCK; | |
90 | #endif /* CONFIG_AF_VSOCK */ | |
a589569f WX |
91 | } |
92 | return NETWORK_ADDRESS_FAMILY_UNKNOWN; | |
93 | } | |
94 | ||
58dc31f1 DB |
95 | bool fd_is_socket(int fd) |
96 | { | |
97 | int optval; | |
98 | socklen_t optlen = sizeof(optval); | |
e7b79428 | 99 | return !getsockopt(fd, SOL_SOCKET, SO_TYPE, &optval, &optlen); |
58dc31f1 DB |
100 | } |
101 | ||
102 | ||
1856835d DB |
103 | /* |
104 | * Matrix we're trying to apply | |
105 | * | |
106 | * ipv4 ipv6 family | |
107 | * - - PF_UNSPEC | |
108 | * - f PF_INET | |
109 | * - t PF_INET6 | |
110 | * f - PF_INET6 | |
111 | * f f <error> | |
112 | * f t PF_INET6 | |
113 | * t - PF_INET | |
114 | * t f PF_INET | |
94bc0d19 | 115 | * t t PF_INET6/PF_UNSPEC |
1856835d | 116 | * |
d43eda3d | 117 | * NB, this matrix is only about getting the necessary results |
1856835d DB |
118 | * from getaddrinfo(). Some of the cases require further work |
119 | * after reading results from getaddrinfo in order to fully | |
94bc0d19 DB |
120 | * apply the logic the end user wants. |
121 | * | |
122 | * In the first and last cases, we must set IPV6_V6ONLY=0 | |
123 | * when binding, to allow a single listener to potentially | |
124 | * accept both IPv4+6 addresses. | |
1856835d | 125 | */ |
c1b412f1 DB |
126 | int inet_ai_family_from_address(InetSocketAddress *addr, |
127 | Error **errp) | |
1856835d DB |
128 | { |
129 | if (addr->has_ipv6 && addr->has_ipv4 && | |
130 | !addr->ipv6 && !addr->ipv4) { | |
131 | error_setg(errp, "Cannot disable IPv4 and IPv6 at same time"); | |
132 | return PF_UNSPEC; | |
133 | } | |
94bc0d19 DB |
134 | if ((addr->has_ipv6 && addr->ipv6) && (addr->has_ipv4 && addr->ipv4)) { |
135 | /* | |
136 | * Some backends can only do a single listener. In that case | |
137 | * we want empty hostname to resolve to "::" and then use the | |
138 | * flag IPV6_V6ONLY==0 to get both protocols on 1 socket. This | |
139 | * doesn't work for addresses other than "", so they're just | |
140 | * inevitably broken until multiple listeners can be used, | |
141 | * and thus we honour getaddrinfo automatic protocol detection | |
142 | * Once all backends do multi-listener, remove the PF_INET6 | |
143 | * branch entirely. | |
144 | */ | |
145 | if (!addr->host || g_str_equal(addr->host, "")) { | |
146 | return PF_INET6; | |
147 | } else { | |
148 | return PF_UNSPEC; | |
149 | } | |
150 | } | |
1856835d DB |
151 | if ((addr->has_ipv6 && addr->ipv6) || (addr->has_ipv4 && !addr->ipv4)) { |
152 | return PF_INET6; | |
153 | } | |
154 | if ((addr->has_ipv4 && addr->ipv4) || (addr->has_ipv6 && !addr->ipv6)) { | |
155 | return PF_INET; | |
156 | } | |
157 | return PF_UNSPEC; | |
158 | } | |
159 | ||
39f80521 KO |
160 | static int create_fast_reuse_socket(struct addrinfo *e) |
161 | { | |
162 | int slisten = qemu_socket(e->ai_family, e->ai_socktype, e->ai_protocol); | |
163 | if (slisten < 0) { | |
164 | return -1; | |
165 | } | |
166 | socket_set_fast_reuse(slisten); | |
167 | return slisten; | |
168 | } | |
169 | ||
89382c3d KO |
170 | static int try_bind(int socket, InetSocketAddress *saddr, struct addrinfo *e) |
171 | { | |
172 | #ifndef IPV6_V6ONLY | |
173 | return bind(socket, e->ai_addr, e->ai_addrlen); | |
174 | #else | |
175 | /* | |
176 | * Deals with first & last cases in matrix in comment | |
177 | * for inet_ai_family_from_address(). | |
178 | */ | |
179 | int v6only = | |
180 | ((!saddr->has_ipv4 && !saddr->has_ipv6) || | |
181 | (saddr->has_ipv4 && saddr->ipv4 && | |
182 | saddr->has_ipv6 && saddr->ipv6)) ? 0 : 1; | |
183 | int stat; | |
184 | ||
185 | rebind: | |
186 | if (e->ai_family == PF_INET6) { | |
e7b79428 MAL |
187 | setsockopt(socket, IPPROTO_IPV6, IPV6_V6ONLY, &v6only, |
188 | sizeof(v6only)); | |
89382c3d KO |
189 | } |
190 | ||
191 | stat = bind(socket, e->ai_addr, e->ai_addrlen); | |
192 | if (!stat) { | |
193 | return 0; | |
194 | } | |
195 | ||
196 | /* If we got EADDRINUSE from an IPv6 bind & v6only is unset, | |
197 | * it could be that the IPv4 port is already claimed, so retry | |
198 | * with v6only set | |
199 | */ | |
200 | if (e->ai_family == PF_INET6 && errno == EADDRINUSE && !v6only) { | |
201 | v6only = 1; | |
202 | goto rebind; | |
203 | } | |
204 | return stat; | |
205 | #endif | |
206 | } | |
207 | ||
1856835d DB |
208 | static int inet_listen_saddr(InetSocketAddress *saddr, |
209 | int port_offset, | |
e5b6353c | 210 | int num, |
1856835d | 211 | Error **errp) |
d247d25f AL |
212 | { |
213 | struct addrinfo ai,*res,*e; | |
d247d25f AL |
214 | char port[33]; |
215 | char uaddr[INET6_ADDRSTRLEN+1]; | |
216 | char uport[33]; | |
9cf961bb | 217 | int rc, port_min, port_max, p; |
10a7b7e6 | 218 | int slisten = -1; |
9cf961bb KO |
219 | int saved_errno = 0; |
220 | bool socket_created = false; | |
1856835d | 221 | Error *err = NULL; |
d247d25f | 222 | |
aec21d31 VSO |
223 | if (saddr->keep_alive) { |
224 | error_setg(errp, "keep-alive option is not supported for passive " | |
225 | "sockets"); | |
226 | return -1; | |
227 | } | |
228 | ||
d247d25f | 229 | memset(&ai,0, sizeof(ai)); |
3de3d698 | 230 | ai.ai_flags = AI_PASSIVE; |
6979a813 DB |
231 | if (saddr->has_numeric && saddr->numeric) { |
232 | ai.ai_flags |= AI_NUMERICHOST | AI_NUMERICSERV; | |
233 | } | |
1856835d | 234 | ai.ai_family = inet_ai_family_from_address(saddr, &err); |
e5bc776f | 235 | ai.ai_socktype = SOCK_STREAM; |
d247d25f | 236 | |
1856835d DB |
237 | if (err) { |
238 | error_propagate(errp, err); | |
239 | return -1; | |
240 | } | |
241 | ||
242 | if (saddr->host == NULL) { | |
0983f5e6 | 243 | error_setg(errp, "host not specified"); |
e5bc776f | 244 | return -1; |
d247d25f | 245 | } |
1856835d DB |
246 | if (saddr->port != NULL) { |
247 | pstrcpy(port, sizeof(port), saddr->port); | |
0983f5e6 DB |
248 | } else { |
249 | port[0] = '\0'; | |
250 | } | |
d247d25f AL |
251 | |
252 | /* lookup */ | |
8bc89127 GH |
253 | if (port_offset) { |
254 | unsigned long long baseport; | |
0983f5e6 DB |
255 | if (strlen(port) == 0) { |
256 | error_setg(errp, "port not specified"); | |
257 | return -1; | |
258 | } | |
8bc89127 GH |
259 | if (parse_uint_full(port, &baseport, 10) < 0) { |
260 | error_setg(errp, "can't convert to a number: %s", port); | |
261 | return -1; | |
262 | } | |
263 | if (baseport > 65535 || | |
264 | baseport + port_offset > 65535) { | |
265 | error_setg(errp, "port %s out of range", port); | |
266 | return -1; | |
267 | } | |
268 | snprintf(port, sizeof(port), "%d", (int)baseport + port_offset); | |
269 | } | |
1856835d | 270 | rc = getaddrinfo(strlen(saddr->host) ? saddr->host : NULL, |
0983f5e6 | 271 | strlen(port) ? port : NULL, &ai, &res); |
d247d25f | 272 | if (rc != 0) { |
1856835d DB |
273 | error_setg(errp, "address resolution failed for %s:%s: %s", |
274 | saddr->host, port, gai_strerror(rc)); | |
d247d25f AL |
275 | return -1; |
276 | } | |
d247d25f | 277 | |
9cf961bb | 278 | /* create socket + bind/listen */ |
d247d25f | 279 | for (e = res; e != NULL; e = e->ai_next) { |
653163fc | 280 | #ifdef HAVE_IPPROTO_MPTCP |
8bd1078a DDAG |
281 | if (saddr->has_mptcp && saddr->mptcp) { |
282 | e->ai_protocol = IPPROTO_MPTCP; | |
283 | } | |
284 | #endif | |
39b6efc8 | 285 | getnameinfo((struct sockaddr*)e->ai_addr,e->ai_addrlen, |
7d37435b PB |
286 | uaddr,INET6_ADDRSTRLEN,uport,32, |
287 | NI_NUMERICHOST | NI_NUMERICSERV); | |
39f80521 | 288 | |
877691f9 | 289 | port_min = inet_getport(e); |
1856835d | 290 | port_max = saddr->has_to ? saddr->to + port_offset : port_min; |
877691f9 MA |
291 | for (p = port_min; p <= port_max; p++) { |
292 | inet_setport(e, p); | |
10a7b7e6 DB |
293 | |
294 | slisten = create_fast_reuse_socket(e); | |
295 | if (slisten < 0) { | |
296 | /* First time we expect we might fail to create the socket | |
297 | * eg if 'e' has AF_INET6 but ipv6 kmod is not loaded. | |
298 | * Later iterations should always succeed if first iteration | |
299 | * worked though, so treat that as fatal. | |
300 | */ | |
301 | if (p == port_min) { | |
9cf961bb KO |
302 | continue; |
303 | } else { | |
10a7b7e6 DB |
304 | error_setg_errno(errp, errno, |
305 | "Failed to recreate failed listening socket"); | |
9cf961bb | 306 | goto listen_failed; |
029409e5 | 307 | } |
d247d25f | 308 | } |
10a7b7e6 DB |
309 | socket_created = true; |
310 | ||
311 | rc = try_bind(slisten, saddr, e); | |
312 | if (rc < 0) { | |
313 | if (errno != EADDRINUSE) { | |
314 | error_setg_errno(errp, errno, "Failed to bind socket"); | |
315 | goto listen_failed; | |
316 | } | |
317 | } else { | |
e5b6353c | 318 | if (!listen(slisten, num)) { |
10a7b7e6 DB |
319 | goto listen_ok; |
320 | } | |
321 | if (errno != EADDRINUSE) { | |
322 | error_setg_errno(errp, errno, "Failed to listen on socket"); | |
323 | goto listen_failed; | |
324 | } | |
9cf961bb KO |
325 | } |
326 | /* Someone else managed to bind to the same port and beat us | |
327 | * to listen on it! Socket semantics does not allow us to | |
328 | * recover from this situation, so we need to recreate the | |
329 | * socket to allow bind attempts for subsequent ports: | |
330 | */ | |
331 | closesocket(slisten); | |
10a7b7e6 | 332 | slisten = -1; |
d247d25f | 333 | } |
9cf961bb KO |
334 | } |
335 | error_setg_errno(errp, errno, | |
336 | socket_created ? | |
337 | "Failed to find an available port" : | |
338 | "Failed to create a socket"); | |
339 | listen_failed: | |
340 | saved_errno = errno; | |
341 | if (slisten >= 0) { | |
d247d25f AL |
342 | closesocket(slisten); |
343 | } | |
d247d25f | 344 | freeaddrinfo(res); |
9cf961bb | 345 | errno = saved_errno; |
d247d25f AL |
346 | return -1; |
347 | ||
9cf961bb | 348 | listen_ok: |
d247d25f AL |
349 | freeaddrinfo(res); |
350 | return slisten; | |
351 | } | |
352 | ||
05bc1d8a MT |
353 | #ifdef _WIN32 |
354 | #define QEMU_SOCKET_RC_INPROGRESS(rc) \ | |
355 | ((rc) == -EINPROGRESS || (rc) == -EWOULDBLOCK || (rc) == -WSAEALREADY) | |
356 | #else | |
357 | #define QEMU_SOCKET_RC_INPROGRESS(rc) \ | |
358 | ((rc) == -EINPROGRESS) | |
359 | #endif | |
360 | ||
dfc00eb7 DB |
361 | static int inet_connect_addr(const InetSocketAddress *saddr, |
362 | struct addrinfo *addr, Error **errp) | |
233aa5c2 OW |
363 | { |
364 | int sock, rc; | |
365 | ||
05bc1d8a MT |
366 | sock = qemu_socket(addr->ai_family, addr->ai_socktype, addr->ai_protocol); |
367 | if (sock < 0) { | |
dfc00eb7 DB |
368 | error_setg_errno(errp, errno, "Failed to create socket family %d", |
369 | addr->ai_family); | |
05bc1d8a MT |
370 | return -1; |
371 | } | |
04fd1c78 | 372 | socket_set_fast_reuse(sock); |
b2587932 | 373 | |
05bc1d8a MT |
374 | /* connect to peer */ |
375 | do { | |
376 | rc = 0; | |
377 | if (connect(sock, addr->ai_addr, addr->ai_addrlen) < 0) { | |
b16a44e1 | 378 | rc = -errno; |
05bc1d8a MT |
379 | } |
380 | } while (rc == -EINTR); | |
381 | ||
b2587932 | 382 | if (rc < 0) { |
dfc00eb7 DB |
383 | error_setg_errno(errp, errno, "Failed to connect to '%s:%s'", |
384 | saddr->host, saddr->port); | |
05bc1d8a MT |
385 | closesocket(sock); |
386 | return -1; | |
387 | } | |
b2587932 | 388 | |
05bc1d8a MT |
389 | return sock; |
390 | } | |
391 | ||
2942e420 DB |
392 | static struct addrinfo *inet_parse_connect_saddr(InetSocketAddress *saddr, |
393 | Error **errp) | |
05bc1d8a MT |
394 | { |
395 | struct addrinfo ai, *res; | |
396 | int rc; | |
2942e420 | 397 | Error *err = NULL; |
340849a9 | 398 | static int useV4Mapped = 1; |
d247d25f | 399 | |
05bc1d8a | 400 | memset(&ai, 0, sizeof(ai)); |
233aa5c2 | 401 | |
340849a9 | 402 | ai.ai_flags = AI_CANONNAME | AI_ADDRCONFIG; |
d73415a3 | 403 | if (qatomic_read(&useV4Mapped)) { |
340849a9 DB |
404 | ai.ai_flags |= AI_V4MAPPED; |
405 | } | |
2942e420 | 406 | ai.ai_family = inet_ai_family_from_address(saddr, &err); |
f4c94c7c | 407 | ai.ai_socktype = SOCK_STREAM; |
d247d25f | 408 | |
2942e420 DB |
409 | if (err) { |
410 | error_propagate(errp, err); | |
05bc1d8a | 411 | return NULL; |
d247d25f AL |
412 | } |
413 | ||
2942e420 DB |
414 | if (saddr->host == NULL || saddr->port == NULL) { |
415 | error_setg(errp, "host and/or port not specified"); | |
416 | return NULL; | |
05bc1d8a | 417 | } |
d247d25f AL |
418 | |
419 | /* lookup */ | |
2942e420 | 420 | rc = getaddrinfo(saddr->host, saddr->port, &ai, &res); |
340849a9 DB |
421 | |
422 | /* At least FreeBSD and OS-X 10.6 declare AI_V4MAPPED but | |
423 | * then don't implement it in their getaddrinfo(). Detect | |
8cc360b9 | 424 | * this and retry without the flag since that's preferable |
340849a9 DB |
425 | * to a fatal error |
426 | */ | |
427 | if (rc == EAI_BADFLAGS && | |
428 | (ai.ai_flags & AI_V4MAPPED)) { | |
d73415a3 | 429 | qatomic_set(&useV4Mapped, 0); |
340849a9 DB |
430 | ai.ai_flags &= ~AI_V4MAPPED; |
431 | rc = getaddrinfo(saddr->host, saddr->port, &ai, &res); | |
432 | } | |
05bc1d8a | 433 | if (rc != 0) { |
2942e420 DB |
434 | error_setg(errp, "address resolution failed for %s:%s: %s", |
435 | saddr->host, saddr->port, gai_strerror(rc)); | |
05bc1d8a MT |
436 | return NULL; |
437 | } | |
438 | return res; | |
439 | } | |
440 | ||
5db5f44c OW |
441 | /** |
442 | * Create a socket and connect it to an address. | |
443 | * | |
2942e420 | 444 | * @saddr: Inet socket address specification |
5db5f44c OW |
445 | * @errp: set on error |
446 | * | |
447 | * Returns: -1 on error, file descriptor on success. | |
448 | */ | |
b2587932 | 449 | int inet_connect_saddr(InetSocketAddress *saddr, Error **errp) |
05bc1d8a | 450 | { |
3f9286b7 | 451 | Error *local_err = NULL; |
05bc1d8a MT |
452 | struct addrinfo *res, *e; |
453 | int sock = -1; | |
05bc1d8a | 454 | |
2942e420 | 455 | res = inet_parse_connect_saddr(saddr, errp); |
05bc1d8a MT |
456 | if (!res) { |
457 | return -1; | |
458 | } | |
459 | ||
d247d25f | 460 | for (e = res; e != NULL; e = e->ai_next) { |
3f9286b7 MA |
461 | error_free(local_err); |
462 | local_err = NULL; | |
8bd1078a | 463 | |
653163fc | 464 | #ifdef HAVE_IPPROTO_MPTCP |
8bd1078a DDAG |
465 | if (saddr->has_mptcp && saddr->mptcp) { |
466 | e->ai_protocol = IPPROTO_MPTCP; | |
467 | } | |
468 | #endif | |
469 | ||
dfc00eb7 | 470 | sock = inet_connect_addr(saddr, e, &local_err); |
3f9286b7 | 471 | if (sock >= 0) { |
05bc1d8a | 472 | break; |
a6ba35b3 | 473 | } |
d247d25f | 474 | } |
3f9286b7 | 475 | |
da5e1169 VSO |
476 | freeaddrinfo(res); |
477 | ||
3f9286b7 MA |
478 | if (sock < 0) { |
479 | error_propagate(errp, local_err); | |
da5e1169 | 480 | return sock; |
3f9286b7 | 481 | } |
b2587932 | 482 | |
aec21d31 VSO |
483 | if (saddr->keep_alive) { |
484 | int val = 1; | |
e7b79428 MAL |
485 | int ret = setsockopt(sock, SOL_SOCKET, SO_KEEPALIVE, |
486 | &val, sizeof(val)); | |
aec21d31 VSO |
487 | |
488 | if (ret < 0) { | |
489 | error_setg_errno(errp, errno, "Unable to set KEEPALIVE"); | |
490 | close(sock); | |
491 | return -1; | |
492 | } | |
493 | } | |
494 | ||
05bc1d8a | 495 | return sock; |
d247d25f AL |
496 | } |
497 | ||
8b39910e DB |
498 | static int inet_dgram_saddr(InetSocketAddress *sraddr, |
499 | InetSocketAddress *sladdr, | |
500 | Error **errp) | |
7e1b35b4 GH |
501 | { |
502 | struct addrinfo ai, *peer = NULL, *local = NULL; | |
503 | const char *addr; | |
504 | const char *port; | |
7e1b35b4 | 505 | int sock = -1, rc; |
8b39910e | 506 | Error *err = NULL; |
7e1b35b4 GH |
507 | |
508 | /* lookup peer addr */ | |
509 | memset(&ai,0, sizeof(ai)); | |
3de3d698 | 510 | ai.ai_flags = AI_CANONNAME | AI_V4MAPPED | AI_ADDRCONFIG; |
8b39910e | 511 | ai.ai_family = inet_ai_family_from_address(sraddr, &err); |
7e1b35b4 GH |
512 | ai.ai_socktype = SOCK_DGRAM; |
513 | ||
8b39910e DB |
514 | if (err) { |
515 | error_propagate(errp, err); | |
58c652c0 | 516 | goto err; |
8b39910e DB |
517 | } |
518 | ||
519 | addr = sraddr->host; | |
520 | port = sraddr->port; | |
7e1b35b4 GH |
521 | if (addr == NULL || strlen(addr) == 0) { |
522 | addr = "localhost"; | |
523 | } | |
524 | if (port == NULL || strlen(port) == 0) { | |
4f085c82 | 525 | error_setg(errp, "remote port not specified"); |
58c652c0 | 526 | goto err; |
7e1b35b4 GH |
527 | } |
528 | ||
9cd1883c | 529 | if ((rc = getaddrinfo(addr, port, &ai, &peer)) != 0) { |
4f085c82 PB |
530 | error_setg(errp, "address resolution failed for %s:%s: %s", addr, port, |
531 | gai_strerror(rc)); | |
26015051 | 532 | goto err; |
7e1b35b4 | 533 | } |
7e1b35b4 GH |
534 | |
535 | /* lookup local addr */ | |
536 | memset(&ai,0, sizeof(ai)); | |
537 | ai.ai_flags = AI_PASSIVE; | |
538 | ai.ai_family = peer->ai_family; | |
539 | ai.ai_socktype = SOCK_DGRAM; | |
540 | ||
8b39910e DB |
541 | if (sladdr) { |
542 | addr = sladdr->host; | |
543 | port = sladdr->port; | |
544 | if (addr == NULL || strlen(addr) == 0) { | |
545 | addr = NULL; | |
546 | } | |
547 | if (!port || strlen(port) == 0) { | |
548 | port = "0"; | |
549 | } | |
550 | } else { | |
7e1b35b4 | 551 | addr = NULL; |
7e1b35b4 | 552 | port = "0"; |
8b39910e | 553 | } |
7e1b35b4 | 554 | |
9cd1883c | 555 | if ((rc = getaddrinfo(addr, port, &ai, &local)) != 0) { |
4f085c82 PB |
556 | error_setg(errp, "address resolution failed for %s:%s: %s", addr, port, |
557 | gai_strerror(rc)); | |
39b38459 | 558 | goto err; |
7e1b35b4 | 559 | } |
7e1b35b4 GH |
560 | |
561 | /* create socket */ | |
40ff6d7e | 562 | sock = qemu_socket(peer->ai_family, peer->ai_socktype, peer->ai_protocol); |
7e1b35b4 | 563 | if (sock < 0) { |
dfc00eb7 DB |
564 | error_setg_errno(errp, errno, "Failed to create socket family %d", |
565 | peer->ai_family); | |
7e1b35b4 GH |
566 | goto err; |
567 | } | |
04fd1c78 | 568 | socket_set_fast_reuse(sock); |
7e1b35b4 GH |
569 | |
570 | /* bind socket */ | |
7e1b35b4 | 571 | if (bind(sock, local->ai_addr, local->ai_addrlen) < 0) { |
235256a2 | 572 | error_setg_errno(errp, errno, "Failed to bind socket"); |
7e1b35b4 GH |
573 | goto err; |
574 | } | |
575 | ||
576 | /* connect to peer */ | |
7e1b35b4 | 577 | if (connect(sock,peer->ai_addr,peer->ai_addrlen) < 0) { |
dfc00eb7 DB |
578 | error_setg_errno(errp, errno, "Failed to connect to '%s:%s'", |
579 | addr, port); | |
7e1b35b4 GH |
580 | goto err; |
581 | } | |
582 | ||
583 | freeaddrinfo(local); | |
584 | freeaddrinfo(peer); | |
585 | return sock; | |
586 | ||
587 | err: | |
26015051 | 588 | if (sock != -1) { |
7e1b35b4 | 589 | closesocket(sock); |
26015051 C |
590 | } |
591 | if (local) { | |
7e1b35b4 | 592 | freeaddrinfo(local); |
26015051 C |
593 | } |
594 | if (peer) { | |
7e1b35b4 | 595 | freeaddrinfo(peer); |
26015051 C |
596 | } |
597 | ||
7e1b35b4 GH |
598 | return -1; |
599 | } | |
600 | ||
f4c94c7c | 601 | /* compatibility wrapper */ |
3e32370a DB |
602 | static int inet_parse_flag(const char *flagname, const char *optstr, bool *val, |
603 | Error **errp) | |
604 | { | |
605 | char *end; | |
606 | size_t len; | |
607 | ||
608 | end = strstr(optstr, ","); | |
609 | if (end) { | |
610 | if (end[1] == ',') { /* Reject 'ipv6=on,,foo' */ | |
611 | error_setg(errp, "error parsing '%s' flag '%s'", flagname, optstr); | |
612 | return -1; | |
613 | } | |
614 | len = end - optstr; | |
615 | } else { | |
616 | len = strlen(optstr); | |
617 | } | |
618 | if (len == 0 || (len == 3 && strncmp(optstr, "=on", len) == 0)) { | |
619 | *val = true; | |
620 | } else if (len == 4 && strncmp(optstr, "=off", len) == 0) { | |
621 | *val = false; | |
622 | } else { | |
623 | error_setg(errp, "error parsing '%s' flag '%s'", flagname, optstr); | |
624 | return -1; | |
625 | } | |
626 | return 0; | |
627 | } | |
628 | ||
0785bd7a | 629 | int inet_parse(InetSocketAddress *addr, const char *str, Error **errp) |
f4c94c7c GH |
630 | { |
631 | const char *optstr, *h; | |
55a10996 | 632 | char host[65]; |
f4c94c7c | 633 | char port[33]; |
879e45c7 | 634 | int to; |
f4c94c7c | 635 | int pos; |
3e32370a | 636 | char *begin; |
f4c94c7c | 637 | |
0785bd7a | 638 | memset(addr, 0, sizeof(*addr)); |
879e45c7 | 639 | |
f4c94c7c GH |
640 | /* parse address */ |
641 | if (str[0] == ':') { | |
642 | /* no host given */ | |
879e45c7 | 643 | host[0] = '\0'; |
9cd1883c | 644 | if (sscanf(str, ":%32[^,]%n", port, &pos) != 1) { |
2f002c43 | 645 | error_setg(errp, "error parsing port in address '%s'", str); |
0785bd7a | 646 | return -1; |
f4c94c7c GH |
647 | } |
648 | } else if (str[0] == '[') { | |
649 | /* IPv6 addr */ | |
9cd1883c | 650 | if (sscanf(str, "[%64[^]]]:%32[^,]%n", host, port, &pos) != 2) { |
2f002c43 | 651 | error_setg(errp, "error parsing IPv6 address '%s'", str); |
0785bd7a | 652 | return -1; |
f4c94c7c | 653 | } |
f4c94c7c | 654 | } else { |
391b7b97 | 655 | /* hostname or IPv4 addr */ |
9cd1883c | 656 | if (sscanf(str, "%64[^:]:%32[^,]%n", host, port, &pos) != 2) { |
2f002c43 | 657 | error_setg(errp, "error parsing address '%s'", str); |
0785bd7a | 658 | return -1; |
f4c94c7c GH |
659 | } |
660 | } | |
879e45c7 PB |
661 | |
662 | addr->host = g_strdup(host); | |
663 | addr->port = g_strdup(port); | |
f4c94c7c GH |
664 | |
665 | /* parse options */ | |
666 | optstr = str + pos; | |
667 | h = strstr(optstr, ",to="); | |
879e45c7 | 668 | if (h) { |
1ccbc285 AP |
669 | h += 4; |
670 | if (sscanf(h, "%d%n", &to, &pos) != 1 || | |
671 | (h[pos] != '\0' && h[pos] != ',')) { | |
879e45c7 | 672 | error_setg(errp, "error parsing to= argument"); |
0785bd7a | 673 | return -1; |
879e45c7 PB |
674 | } |
675 | addr->has_to = true; | |
676 | addr->to = to; | |
677 | } | |
3e32370a DB |
678 | begin = strstr(optstr, ",ipv4"); |
679 | if (begin) { | |
680 | if (inet_parse_flag("ipv4", begin + 5, &addr->ipv4, errp) < 0) { | |
681 | return -1; | |
682 | } | |
683 | addr->has_ipv4 = true; | |
879e45c7 | 684 | } |
3e32370a DB |
685 | begin = strstr(optstr, ",ipv6"); |
686 | if (begin) { | |
687 | if (inet_parse_flag("ipv6", begin + 5, &addr->ipv6, errp) < 0) { | |
688 | return -1; | |
689 | } | |
690 | addr->has_ipv6 = true; | |
879e45c7 | 691 | } |
aec21d31 VSO |
692 | begin = strstr(optstr, ",keep-alive"); |
693 | if (begin) { | |
694 | if (inet_parse_flag("keep-alive", begin + strlen(",keep-alive"), | |
695 | &addr->keep_alive, errp) < 0) | |
696 | { | |
697 | return -1; | |
698 | } | |
699 | addr->has_keep_alive = true; | |
700 | } | |
653163fc | 701 | #ifdef HAVE_IPPROTO_MPTCP |
8bd1078a DDAG |
702 | begin = strstr(optstr, ",mptcp"); |
703 | if (begin) { | |
704 | if (inet_parse_flag("mptcp", begin + strlen(",mptcp"), | |
705 | &addr->mptcp, errp) < 0) | |
706 | { | |
707 | return -1; | |
708 | } | |
709 | addr->has_mptcp = true; | |
710 | } | |
711 | #endif | |
0785bd7a | 712 | return 0; |
879e45c7 PB |
713 | } |
714 | ||
e5bc776f | 715 | |
5db5f44c OW |
716 | /** |
717 | * Create a blocking socket and connect it to an address. | |
718 | * | |
719 | * @str: address string | |
720 | * @errp: set in case of an error | |
721 | * | |
722 | * Returns -1 in case of error, file descriptor on success | |
723 | **/ | |
724 | int inet_connect(const char *str, Error **errp) | |
f4c94c7c | 725 | { |
f4c94c7c | 726 | int sock = -1; |
0785bd7a | 727 | InetSocketAddress *addr = g_new(InetSocketAddress, 1); |
f4c94c7c | 728 | |
0785bd7a | 729 | if (!inet_parse(addr, str, errp)) { |
b2587932 | 730 | sock = inet_connect_saddr(addr, errp); |
5db5f44c | 731 | } |
0785bd7a | 732 | qapi_free_InetSocketAddress(addr); |
5db5f44c OW |
733 | return sock; |
734 | } | |
735 | ||
6a02c806 SH |
736 | #ifdef CONFIG_AF_VSOCK |
737 | static bool vsock_parse_vaddr_to_sockaddr(const VsockSocketAddress *vaddr, | |
738 | struct sockaddr_vm *svm, | |
739 | Error **errp) | |
740 | { | |
741 | unsigned long long val; | |
742 | ||
743 | memset(svm, 0, sizeof(*svm)); | |
744 | svm->svm_family = AF_VSOCK; | |
745 | ||
746 | if (parse_uint_full(vaddr->cid, &val, 10) < 0 || | |
747 | val > UINT32_MAX) { | |
748 | error_setg(errp, "Failed to parse cid '%s'", vaddr->cid); | |
749 | return false; | |
750 | } | |
751 | svm->svm_cid = val; | |
752 | ||
753 | if (parse_uint_full(vaddr->port, &val, 10) < 0 || | |
754 | val > UINT32_MAX) { | |
755 | error_setg(errp, "Failed to parse port '%s'", vaddr->port); | |
756 | return false; | |
757 | } | |
758 | svm->svm_port = val; | |
759 | ||
760 | return true; | |
761 | } | |
762 | ||
dfc00eb7 DB |
763 | static int vsock_connect_addr(const VsockSocketAddress *vaddr, |
764 | const struct sockaddr_vm *svm, Error **errp) | |
6a02c806 SH |
765 | { |
766 | int sock, rc; | |
767 | ||
6a02c806 SH |
768 | sock = qemu_socket(AF_VSOCK, SOCK_STREAM, 0); |
769 | if (sock < 0) { | |
dfc00eb7 DB |
770 | error_setg_errno(errp, errno, "Failed to create socket family %d", |
771 | AF_VSOCK); | |
6a02c806 SH |
772 | return -1; |
773 | } | |
b2587932 | 774 | |
6a02c806 SH |
775 | /* connect to peer */ |
776 | do { | |
777 | rc = 0; | |
778 | if (connect(sock, (const struct sockaddr *)svm, sizeof(*svm)) < 0) { | |
779 | rc = -errno; | |
780 | } | |
781 | } while (rc == -EINTR); | |
782 | ||
b2587932 | 783 | if (rc < 0) { |
dfc00eb7 DB |
784 | error_setg_errno(errp, errno, "Failed to connect to '%s:%s'", |
785 | vaddr->cid, vaddr->port); | |
6a02c806 SH |
786 | closesocket(sock); |
787 | return -1; | |
788 | } | |
b2587932 | 789 | |
6a02c806 SH |
790 | return sock; |
791 | } | |
792 | ||
b2587932 | 793 | static int vsock_connect_saddr(VsockSocketAddress *vaddr, Error **errp) |
6a02c806 SH |
794 | { |
795 | struct sockaddr_vm svm; | |
6a02c806 SH |
796 | |
797 | if (!vsock_parse_vaddr_to_sockaddr(vaddr, &svm, errp)) { | |
798 | return -1; | |
799 | } | |
800 | ||
dfc00eb7 | 801 | return vsock_connect_addr(vaddr, &svm, errp); |
6a02c806 SH |
802 | } |
803 | ||
804 | static int vsock_listen_saddr(VsockSocketAddress *vaddr, | |
e5b6353c | 805 | int num, |
6a02c806 SH |
806 | Error **errp) |
807 | { | |
808 | struct sockaddr_vm svm; | |
809 | int slisten; | |
810 | ||
811 | if (!vsock_parse_vaddr_to_sockaddr(vaddr, &svm, errp)) { | |
812 | return -1; | |
813 | } | |
814 | ||
815 | slisten = qemu_socket(AF_VSOCK, SOCK_STREAM, 0); | |
816 | if (slisten < 0) { | |
817 | error_setg_errno(errp, errno, "Failed to create socket"); | |
818 | return -1; | |
819 | } | |
820 | ||
821 | if (bind(slisten, (const struct sockaddr *)&svm, sizeof(svm)) != 0) { | |
822 | error_setg_errno(errp, errno, "Failed to bind socket"); | |
823 | closesocket(slisten); | |
824 | return -1; | |
825 | } | |
826 | ||
e5b6353c | 827 | if (listen(slisten, num) != 0) { |
6a02c806 SH |
828 | error_setg_errno(errp, errno, "Failed to listen on socket"); |
829 | closesocket(slisten); | |
830 | return -1; | |
831 | } | |
832 | return slisten; | |
833 | } | |
834 | ||
4db5c619 MA |
835 | static int vsock_parse(VsockSocketAddress *addr, const char *str, |
836 | Error **errp) | |
6a02c806 | 837 | { |
6a02c806 SH |
838 | char cid[33]; |
839 | char port[33]; | |
840 | int n; | |
841 | ||
842 | if (sscanf(str, "%32[^:]:%32[^,]%n", cid, port, &n) != 2) { | |
843 | error_setg(errp, "error parsing address '%s'", str); | |
4db5c619 | 844 | return -1; |
6a02c806 SH |
845 | } |
846 | if (str[n] != '\0') { | |
847 | error_setg(errp, "trailing characters in address '%s'", str); | |
4db5c619 | 848 | return -1; |
6a02c806 SH |
849 | } |
850 | ||
6a02c806 SH |
851 | addr->cid = g_strdup(cid); |
852 | addr->port = g_strdup(port); | |
4db5c619 | 853 | return 0; |
6a02c806 SH |
854 | } |
855 | #else | |
856 | static void vsock_unsupported(Error **errp) | |
857 | { | |
858 | error_setg(errp, "socket family AF_VSOCK unsupported"); | |
859 | } | |
860 | ||
b2587932 | 861 | static int vsock_connect_saddr(VsockSocketAddress *vaddr, Error **errp) |
6a02c806 SH |
862 | { |
863 | vsock_unsupported(errp); | |
864 | return -1; | |
865 | } | |
866 | ||
867 | static int vsock_listen_saddr(VsockSocketAddress *vaddr, | |
e5b6353c | 868 | int num, |
6a02c806 SH |
869 | Error **errp) |
870 | { | |
871 | vsock_unsupported(errp); | |
872 | return -1; | |
873 | } | |
874 | ||
4db5c619 MA |
875 | static int vsock_parse(VsockSocketAddress *addr, const char *str, |
876 | Error **errp) | |
6a02c806 SH |
877 | { |
878 | vsock_unsupported(errp); | |
4db5c619 | 879 | return -1; |
6a02c806 SH |
880 | } |
881 | #endif /* CONFIG_AF_VSOCK */ | |
882 | ||
d247d25f AL |
883 | #ifndef _WIN32 |
884 | ||
8acefc79 MA |
885 | static bool saddr_is_abstract(UnixSocketAddress *saddr) |
886 | { | |
887 | #ifdef CONFIG_LINUX | |
888 | return saddr->abstract; | |
889 | #else | |
890 | return false; | |
891 | #endif | |
892 | } | |
893 | ||
894 | static bool saddr_is_tight(UnixSocketAddress *saddr) | |
895 | { | |
896 | #ifdef CONFIG_LINUX | |
897 | return !saddr->has_tight || saddr->tight; | |
898 | #else | |
899 | return false; | |
900 | #endif | |
901 | } | |
902 | ||
1856835d | 903 | static int unix_listen_saddr(UnixSocketAddress *saddr, |
e5b6353c | 904 | int num, |
1856835d | 905 | Error **errp) |
d247d25f | 906 | { |
8acefc79 | 907 | bool abstract = saddr_is_abstract(saddr); |
d247d25f | 908 | struct sockaddr_un un; |
62b6adfb | 909 | int sock, fd; |
ad9579aa DB |
910 | char *pathbuf = NULL; |
911 | const char *path; | |
2d2023c3 | 912 | size_t pathlen; |
776b97d3 | 913 | size_t addrlen; |
d247d25f | 914 | |
40ff6d7e | 915 | sock = qemu_socket(PF_UNIX, SOCK_STREAM, 0); |
d247d25f | 916 | if (sock < 0) { |
b658c53d | 917 | error_setg_errno(errp, errno, "Failed to create Unix socket"); |
39b6efc8 | 918 | return -1; |
d247d25f AL |
919 | } |
920 | ||
8acefc79 | 921 | if (saddr->path[0] || abstract) { |
ad9579aa | 922 | path = saddr->path; |
d247d25f | 923 | } else { |
b658c53d PB |
924 | const char *tmpdir = getenv("TMPDIR"); |
925 | tmpdir = tmpdir ? tmpdir : "/tmp"; | |
ad9579aa DB |
926 | path = pathbuf = g_strdup_printf("%s/qemu-socket-XXXXXX", tmpdir); |
927 | } | |
b658c53d | 928 | |
2d2023c3 | 929 | pathlen = strlen(path); |
776b97d3 | 930 | if (pathlen > sizeof(un.sun_path) || |
8acefc79 | 931 | (abstract && pathlen > (sizeof(un.sun_path) - 1))) { |
ad9579aa DB |
932 | error_setg(errp, "UNIX socket path '%s' is too long", path); |
933 | error_append_hint(errp, "Path must be less than %zu bytes\n", | |
8acefc79 | 934 | abstract ? sizeof(un.sun_path) - 1 : |
ad9579aa DB |
935 | sizeof(un.sun_path)); |
936 | goto err; | |
937 | } | |
938 | ||
939 | if (pathbuf != NULL) { | |
d247d25f AL |
940 | /* |
941 | * This dummy fd usage silences the mktemp() unsecure warning. | |
942 | * Using mkstemp() doesn't make things more secure here | |
943 | * though. bind() complains about existing files, so we have | |
944 | * to unlink first and thus re-open the race window. The | |
945 | * worst case possible is bind() failing, i.e. a DoS attack. | |
946 | */ | |
ad9579aa | 947 | fd = mkstemp(pathbuf); |
b658c53d PB |
948 | if (fd < 0) { |
949 | error_setg_errno(errp, errno, | |
ad9579aa | 950 | "Failed to make a temporary socket %s", pathbuf); |
b658c53d PB |
951 | goto err; |
952 | } | |
953 | close(fd); | |
d247d25f | 954 | } |
d247d25f | 955 | |
8acefc79 | 956 | if (!abstract && unlink(path) < 0 && errno != ENOENT) { |
0ef705a2 | 957 | error_setg_errno(errp, errno, |
ad9579aa | 958 | "Failed to unlink socket %s", path); |
0ef705a2 CR |
959 | goto err; |
960 | } | |
ad9579aa DB |
961 | |
962 | memset(&un, 0, sizeof(un)); | |
963 | un.sun_family = AF_UNIX; | |
776b97d3 | 964 | addrlen = sizeof(un); |
ad9579aa | 965 | |
8acefc79 | 966 | if (abstract) { |
776b97d3 XZ |
967 | un.sun_path[0] = '\0'; |
968 | memcpy(&un.sun_path[1], path, pathlen); | |
8acefc79 | 969 | if (saddr_is_tight(saddr)) { |
776b97d3 XZ |
970 | addrlen = offsetof(struct sockaddr_un, sun_path) + 1 + pathlen; |
971 | } | |
972 | } else { | |
973 | memcpy(un.sun_path, path, pathlen); | |
974 | } | |
975 | ||
976 | if (bind(sock, (struct sockaddr *) &un, addrlen) < 0) { | |
56382bd5 | 977 | error_setg_errno(errp, errno, "Failed to bind socket to %s", path); |
d247d25f AL |
978 | goto err; |
979 | } | |
e5b6353c | 980 | if (listen(sock, num) < 0) { |
235256a2 | 981 | error_setg_errno(errp, errno, "Failed to listen on socket"); |
d247d25f AL |
982 | goto err; |
983 | } | |
984 | ||
62473511 | 985 | g_free(pathbuf); |
d247d25f AL |
986 | return sock; |
987 | ||
988 | err: | |
ad9579aa | 989 | g_free(pathbuf); |
d247d25f AL |
990 | closesocket(sock); |
991 | return -1; | |
992 | } | |
993 | ||
b2587932 | 994 | static int unix_connect_saddr(UnixSocketAddress *saddr, Error **errp) |
d247d25f | 995 | { |
8acefc79 | 996 | bool abstract = saddr_is_abstract(saddr); |
d247d25f | 997 | struct sockaddr_un un; |
1fc05adf | 998 | int sock, rc; |
2d2023c3 | 999 | size_t pathlen; |
776b97d3 | 1000 | size_t addrlen; |
d247d25f | 1001 | |
2942e420 | 1002 | if (saddr->path == NULL) { |
312fd5f2 | 1003 | error_setg(errp, "unix connect: no path specified"); |
2af2bf67 GH |
1004 | return -1; |
1005 | } | |
1006 | ||
40ff6d7e | 1007 | sock = qemu_socket(PF_UNIX, SOCK_STREAM, 0); |
d247d25f | 1008 | if (sock < 0) { |
235256a2 | 1009 | error_setg_errno(errp, errno, "Failed to create socket"); |
39b6efc8 | 1010 | return -1; |
d247d25f AL |
1011 | } |
1012 | ||
2d2023c3 | 1013 | pathlen = strlen(saddr->path); |
776b97d3 | 1014 | if (pathlen > sizeof(un.sun_path) || |
8acefc79 | 1015 | (abstract && pathlen > (sizeof(un.sun_path) - 1))) { |
ad9579aa DB |
1016 | error_setg(errp, "UNIX socket path '%s' is too long", saddr->path); |
1017 | error_append_hint(errp, "Path must be less than %zu bytes\n", | |
8acefc79 | 1018 | abstract ? sizeof(un.sun_path) - 1 : |
ad9579aa DB |
1019 | sizeof(un.sun_path)); |
1020 | goto err; | |
1021 | } | |
1022 | ||
d247d25f AL |
1023 | memset(&un, 0, sizeof(un)); |
1024 | un.sun_family = AF_UNIX; | |
776b97d3 | 1025 | addrlen = sizeof(un); |
1fc05adf | 1026 | |
8acefc79 | 1027 | if (abstract) { |
776b97d3 XZ |
1028 | un.sun_path[0] = '\0'; |
1029 | memcpy(&un.sun_path[1], saddr->path, pathlen); | |
8acefc79 | 1030 | if (saddr_is_tight(saddr)) { |
776b97d3 XZ |
1031 | addrlen = offsetof(struct sockaddr_un, sun_path) + 1 + pathlen; |
1032 | } | |
1033 | } else { | |
1034 | memcpy(un.sun_path, saddr->path, pathlen); | |
1035 | } | |
1fc05adf PB |
1036 | /* connect to peer */ |
1037 | do { | |
1038 | rc = 0; | |
776b97d3 | 1039 | if (connect(sock, (struct sockaddr *) &un, addrlen) < 0) { |
b16a44e1 | 1040 | rc = -errno; |
1fc05adf PB |
1041 | } |
1042 | } while (rc == -EINTR); | |
1043 | ||
1fc05adf | 1044 | if (rc < 0) { |
dfc00eb7 | 1045 | error_setg_errno(errp, -rc, "Failed to connect to '%s'", |
ad9579aa DB |
1046 | saddr->path); |
1047 | goto err; | |
d247d25f AL |
1048 | } |
1049 | ||
d247d25f | 1050 | return sock; |
ad9579aa DB |
1051 | |
1052 | err: | |
1053 | close(sock); | |
ad9579aa | 1054 | return -1; |
d247d25f AL |
1055 | } |
1056 | ||
0c814709 PB |
1057 | #else |
1058 | ||
1856835d | 1059 | static int unix_listen_saddr(UnixSocketAddress *saddr, |
e5b6353c | 1060 | int num, |
1856835d | 1061 | Error **errp) |
0c814709 | 1062 | { |
58899664 | 1063 | error_setg(errp, "unix sockets are not available on windows"); |
0c814709 PB |
1064 | errno = ENOTSUP; |
1065 | return -1; | |
1066 | } | |
1067 | ||
b2587932 | 1068 | static int unix_connect_saddr(UnixSocketAddress *saddr, Error **errp) |
0c814709 | 1069 | { |
58899664 | 1070 | error_setg(errp, "unix sockets are not available on windows"); |
0c814709 PB |
1071 | errno = ENOTSUP; |
1072 | return -1; | |
1073 | } | |
1074 | #endif | |
1075 | ||
2af2bf67 | 1076 | /* compatibility wrapper */ |
62473511 | 1077 | int unix_listen(const char *str, Error **errp) |
62b6adfb | 1078 | { |
1856835d | 1079 | UnixSocketAddress *saddr; |
caf88d74 | 1080 | int sock; |
62b6adfb | 1081 | |
1856835d | 1082 | saddr = g_new0(UnixSocketAddress, 1); |
caf88d74 | 1083 | saddr->path = g_strdup(str); |
e5b6353c | 1084 | sock = unix_listen_saddr(saddr, 1, errp); |
1856835d | 1085 | qapi_free_UnixSocketAddress(saddr); |
62b6adfb GH |
1086 | return sock; |
1087 | } | |
1088 | ||
7fc4e63e | 1089 | int unix_connect(const char *path, Error **errp) |
2af2bf67 | 1090 | { |
2942e420 | 1091 | UnixSocketAddress *saddr; |
2af2bf67 GH |
1092 | int sock; |
1093 | ||
2942e420 DB |
1094 | saddr = g_new0(UnixSocketAddress, 1); |
1095 | saddr->path = g_strdup(path); | |
b2587932 | 1096 | sock = unix_connect_saddr(saddr, errp); |
2942e420 | 1097 | qapi_free_UnixSocketAddress(saddr); |
1fc05adf PB |
1098 | return sock; |
1099 | } | |
1100 | ||
1101 | ||
bd269ebc | 1102 | SocketAddress *socket_parse(const char *str, Error **errp) |
101f9cbc | 1103 | { |
bd269ebc | 1104 | SocketAddress *addr; |
101f9cbc | 1105 | |
bd269ebc | 1106 | addr = g_new0(SocketAddress, 1); |
101f9cbc PB |
1107 | if (strstart(str, "unix:", NULL)) { |
1108 | if (str[5] == '\0') { | |
312fd5f2 | 1109 | error_setg(errp, "invalid Unix socket address"); |
101f9cbc PB |
1110 | goto fail; |
1111 | } else { | |
bd269ebc MA |
1112 | addr->type = SOCKET_ADDRESS_TYPE_UNIX; |
1113 | addr->u.q_unix.path = g_strdup(str + 5); | |
101f9cbc PB |
1114 | } |
1115 | } else if (strstart(str, "fd:", NULL)) { | |
1116 | if (str[3] == '\0') { | |
312fd5f2 | 1117 | error_setg(errp, "invalid file descriptor address"); |
101f9cbc PB |
1118 | goto fail; |
1119 | } else { | |
bd269ebc MA |
1120 | addr->type = SOCKET_ADDRESS_TYPE_FD; |
1121 | addr->u.fd.str = g_strdup(str + 3); | |
101f9cbc | 1122 | } |
6a02c806 | 1123 | } else if (strstart(str, "vsock:", NULL)) { |
bd269ebc MA |
1124 | addr->type = SOCKET_ADDRESS_TYPE_VSOCK; |
1125 | if (vsock_parse(&addr->u.vsock, str + strlen("vsock:"), errp)) { | |
6a02c806 SH |
1126 | goto fail; |
1127 | } | |
101f9cbc | 1128 | } else { |
bd269ebc MA |
1129 | addr->type = SOCKET_ADDRESS_TYPE_INET; |
1130 | if (inet_parse(&addr->u.inet, str, errp)) { | |
101f9cbc PB |
1131 | goto fail; |
1132 | } | |
1133 | } | |
1134 | return addr; | |
1135 | ||
1136 | fail: | |
bd269ebc | 1137 | qapi_free_SocketAddress(addr); |
101f9cbc PB |
1138 | return NULL; |
1139 | } | |
1140 | ||
37179e9e | 1141 | static int socket_get_fd(const char *fdstr, Error **errp) |
30bdb3c5 | 1142 | { |
947e4744 | 1143 | Monitor *cur_mon = monitor_cur(); |
1723d6b1 DB |
1144 | int fd; |
1145 | if (cur_mon) { | |
1146 | fd = monitor_get_fd(cur_mon, fdstr, errp); | |
1147 | if (fd < 0) { | |
1148 | return -1; | |
1149 | } | |
1150 | } else { | |
1151 | if (qemu_strtoi(fdstr, NULL, 10, &fd) < 0) { | |
1152 | error_setg_errno(errp, errno, | |
1153 | "Unable to parse FD number %s", | |
1154 | fdstr); | |
1155 | return -1; | |
1156 | } | |
30bdb3c5 DB |
1157 | } |
1158 | if (!fd_is_socket(fd)) { | |
1159 | error_setg(errp, "File descriptor '%s' is not a socket", fdstr); | |
1160 | close(fd); | |
1161 | return -1; | |
1162 | } | |
1163 | return fd; | |
1164 | } | |
1165 | ||
c5423704 VSO |
1166 | int socket_address_parse_named_fd(SocketAddress *addr, Error **errp) |
1167 | { | |
1168 | int fd; | |
1169 | ||
1170 | if (addr->type != SOCKET_ADDRESS_TYPE_FD) { | |
1171 | return 0; | |
1172 | } | |
1173 | ||
1174 | fd = socket_get_fd(addr->u.fd.str, errp); | |
1175 | if (fd < 0) { | |
1176 | return fd; | |
1177 | } | |
1178 | ||
1179 | g_free(addr->u.fd.str); | |
1180 | addr->u.fd.str = g_strdup_printf("%d", fd); | |
1181 | ||
1182 | return 0; | |
1183 | } | |
1184 | ||
b2587932 | 1185 | int socket_connect(SocketAddress *addr, Error **errp) |
101f9cbc | 1186 | { |
101f9cbc PB |
1187 | int fd; |
1188 | ||
2d32adda | 1189 | switch (addr->type) { |
bd269ebc | 1190 | case SOCKET_ADDRESS_TYPE_INET: |
b2587932 | 1191 | fd = inet_connect_saddr(&addr->u.inet, errp); |
101f9cbc PB |
1192 | break; |
1193 | ||
bd269ebc | 1194 | case SOCKET_ADDRESS_TYPE_UNIX: |
b2587932 | 1195 | fd = unix_connect_saddr(&addr->u.q_unix, errp); |
101f9cbc PB |
1196 | break; |
1197 | ||
bd269ebc | 1198 | case SOCKET_ADDRESS_TYPE_FD: |
37179e9e | 1199 | fd = socket_get_fd(addr->u.fd.str, errp); |
101f9cbc PB |
1200 | break; |
1201 | ||
bd269ebc | 1202 | case SOCKET_ADDRESS_TYPE_VSOCK: |
b2587932 | 1203 | fd = vsock_connect_saddr(&addr->u.vsock, errp); |
6a02c806 SH |
1204 | break; |
1205 | ||
101f9cbc PB |
1206 | default: |
1207 | abort(); | |
1208 | } | |
101f9cbc PB |
1209 | return fd; |
1210 | } | |
1211 | ||
e5b6353c | 1212 | int socket_listen(SocketAddress *addr, int num, Error **errp) |
101f9cbc | 1213 | { |
101f9cbc PB |
1214 | int fd; |
1215 | ||
e5b6353c | 1216 | trace_socket_listen(num); |
2d32adda | 1217 | switch (addr->type) { |
bd269ebc | 1218 | case SOCKET_ADDRESS_TYPE_INET: |
e5b6353c | 1219 | fd = inet_listen_saddr(&addr->u.inet, 0, num, errp); |
101f9cbc PB |
1220 | break; |
1221 | ||
bd269ebc | 1222 | case SOCKET_ADDRESS_TYPE_UNIX: |
e5b6353c | 1223 | fd = unix_listen_saddr(&addr->u.q_unix, num, errp); |
101f9cbc PB |
1224 | break; |
1225 | ||
bd269ebc | 1226 | case SOCKET_ADDRESS_TYPE_FD: |
37179e9e SH |
1227 | fd = socket_get_fd(addr->u.fd.str, errp); |
1228 | if (fd < 0) { | |
1229 | return -1; | |
1230 | } | |
1231 | ||
1232 | /* | |
1233 | * If the socket is not yet in the listen state, then transition it to | |
1234 | * the listen state now. | |
1235 | * | |
1236 | * If it's already listening then this updates the backlog value as | |
1237 | * requested. | |
1238 | * | |
1239 | * If this socket cannot listen because it's already in another state | |
1240 | * (e.g. unbound or connected) then we'll catch the error here. | |
1241 | */ | |
1242 | if (listen(fd, num) != 0) { | |
1243 | error_setg_errno(errp, errno, "Failed to listen on fd socket"); | |
1244 | closesocket(fd); | |
1245 | return -1; | |
1246 | } | |
101f9cbc PB |
1247 | break; |
1248 | ||
bd269ebc | 1249 | case SOCKET_ADDRESS_TYPE_VSOCK: |
e5b6353c | 1250 | fd = vsock_listen_saddr(&addr->u.vsock, num, errp); |
6a02c806 SH |
1251 | break; |
1252 | ||
101f9cbc PB |
1253 | default: |
1254 | abort(); | |
1255 | } | |
101f9cbc PB |
1256 | return fd; |
1257 | } | |
1258 | ||
74b6ce43 MAL |
1259 | void socket_listen_cleanup(int fd, Error **errp) |
1260 | { | |
bd269ebc | 1261 | SocketAddress *addr; |
74b6ce43 MAL |
1262 | |
1263 | addr = socket_local_address(fd, errp); | |
2d7ad7c0 DB |
1264 | if (!addr) { |
1265 | return; | |
1266 | } | |
74b6ce43 | 1267 | |
bd269ebc MA |
1268 | if (addr->type == SOCKET_ADDRESS_TYPE_UNIX |
1269 | && addr->u.q_unix.path) { | |
1270 | if (unlink(addr->u.q_unix.path) < 0 && errno != ENOENT) { | |
74b6ce43 MAL |
1271 | error_setg_errno(errp, errno, |
1272 | "Failed to unlink socket %s", | |
bd269ebc | 1273 | addr->u.q_unix.path); |
74b6ce43 MAL |
1274 | } |
1275 | } | |
1276 | ||
bd269ebc | 1277 | qapi_free_SocketAddress(addr); |
74b6ce43 MAL |
1278 | } |
1279 | ||
bd269ebc | 1280 | int socket_dgram(SocketAddress *remote, SocketAddress *local, Error **errp) |
3ecc059d | 1281 | { |
3ecc059d GH |
1282 | int fd; |
1283 | ||
ca0b64e5 | 1284 | /* |
bd269ebc | 1285 | * TODO SOCKET_ADDRESS_TYPE_FD when fd is AF_INET or AF_INET6 |
ca0b64e5 MA |
1286 | * (although other address families can do SOCK_DGRAM, too) |
1287 | */ | |
2d32adda | 1288 | switch (remote->type) { |
bd269ebc MA |
1289 | case SOCKET_ADDRESS_TYPE_INET: |
1290 | fd = inet_dgram_saddr(&remote->u.inet, | |
1291 | local ? &local->u.inet : NULL, errp); | |
3ecc059d GH |
1292 | break; |
1293 | ||
1294 | default: | |
1295 | error_setg(errp, "socket type unsupported for datagram"); | |
7a5b6af1 | 1296 | fd = -1; |
3ecc059d | 1297 | } |
3ecc059d GH |
1298 | return fd; |
1299 | } | |
17c55dec DB |
1300 | |
1301 | ||
bd269ebc | 1302 | static SocketAddress * |
17c55dec DB |
1303 | socket_sockaddr_to_address_inet(struct sockaddr_storage *sa, |
1304 | socklen_t salen, | |
1305 | Error **errp) | |
1306 | { | |
1307 | char host[NI_MAXHOST]; | |
1308 | char serv[NI_MAXSERV]; | |
bd269ebc | 1309 | SocketAddress *addr; |
0399293e | 1310 | InetSocketAddress *inet; |
17c55dec DB |
1311 | int ret; |
1312 | ||
1313 | ret = getnameinfo((struct sockaddr *)sa, salen, | |
1314 | host, sizeof(host), | |
1315 | serv, sizeof(serv), | |
1316 | NI_NUMERICHOST | NI_NUMERICSERV); | |
1317 | if (ret != 0) { | |
1318 | error_setg(errp, "Cannot format numeric socket address: %s", | |
1319 | gai_strerror(ret)); | |
1320 | return NULL; | |
1321 | } | |
1322 | ||
bd269ebc MA |
1323 | addr = g_new0(SocketAddress, 1); |
1324 | addr->type = SOCKET_ADDRESS_TYPE_INET; | |
1325 | inet = &addr->u.inet; | |
0399293e EB |
1326 | inet->host = g_strdup(host); |
1327 | inet->port = g_strdup(serv); | |
17c55dec | 1328 | if (sa->ss_family == AF_INET) { |
0399293e | 1329 | inet->has_ipv4 = inet->ipv4 = true; |
17c55dec | 1330 | } else { |
0399293e | 1331 | inet->has_ipv6 = inet->ipv6 = true; |
17c55dec DB |
1332 | } |
1333 | ||
1334 | return addr; | |
1335 | } | |
1336 | ||
1337 | ||
1338 | #ifndef WIN32 | |
bd269ebc | 1339 | static SocketAddress * |
17c55dec DB |
1340 | socket_sockaddr_to_address_unix(struct sockaddr_storage *sa, |
1341 | socklen_t salen, | |
1342 | Error **errp) | |
1343 | { | |
bd269ebc | 1344 | SocketAddress *addr; |
17c55dec DB |
1345 | struct sockaddr_un *su = (struct sockaddr_un *)sa; |
1346 | ||
bd269ebc MA |
1347 | addr = g_new0(SocketAddress, 1); |
1348 | addr->type = SOCKET_ADDRESS_TYPE_UNIX; | |
118d527f | 1349 | salen -= offsetof(struct sockaddr_un, sun_path); |
3b14b4ec | 1350 | #ifdef CONFIG_LINUX |
118d527f | 1351 | if (salen > 0 && !su->sun_path[0]) { |
3b14b4ec | 1352 | /* Linux abstract socket */ |
118d527f | 1353 | addr->u.q_unix.path = g_strndup(su->sun_path + 1, salen - 1); |
3b14b4ec MA |
1354 | addr->u.q_unix.has_abstract = true; |
1355 | addr->u.q_unix.abstract = true; | |
1356 | addr->u.q_unix.has_tight = true; | |
118d527f | 1357 | addr->u.q_unix.tight = salen < sizeof(su->sun_path); |
3b14b4ec | 1358 | return addr; |
17c55dec | 1359 | } |
3b14b4ec | 1360 | #endif |
17c55dec | 1361 | |
118d527f | 1362 | addr->u.q_unix.path = g_strndup(su->sun_path, salen); |
17c55dec DB |
1363 | return addr; |
1364 | } | |
1365 | #endif /* WIN32 */ | |
1366 | ||
6a02c806 | 1367 | #ifdef CONFIG_AF_VSOCK |
bd269ebc | 1368 | static SocketAddress * |
6a02c806 SH |
1369 | socket_sockaddr_to_address_vsock(struct sockaddr_storage *sa, |
1370 | socklen_t salen, | |
1371 | Error **errp) | |
1372 | { | |
bd269ebc | 1373 | SocketAddress *addr; |
6a02c806 SH |
1374 | VsockSocketAddress *vaddr; |
1375 | struct sockaddr_vm *svm = (struct sockaddr_vm *)sa; | |
1376 | ||
bd269ebc MA |
1377 | addr = g_new0(SocketAddress, 1); |
1378 | addr->type = SOCKET_ADDRESS_TYPE_VSOCK; | |
1379 | vaddr = &addr->u.vsock; | |
6a02c806 SH |
1380 | vaddr->cid = g_strdup_printf("%u", svm->svm_cid); |
1381 | vaddr->port = g_strdup_printf("%u", svm->svm_port); | |
1382 | ||
1383 | return addr; | |
1384 | } | |
1385 | #endif /* CONFIG_AF_VSOCK */ | |
1386 | ||
bd269ebc | 1387 | SocketAddress * |
17c55dec DB |
1388 | socket_sockaddr_to_address(struct sockaddr_storage *sa, |
1389 | socklen_t salen, | |
1390 | Error **errp) | |
1391 | { | |
1392 | switch (sa->ss_family) { | |
1393 | case AF_INET: | |
1394 | case AF_INET6: | |
1395 | return socket_sockaddr_to_address_inet(sa, salen, errp); | |
1396 | ||
1397 | #ifndef WIN32 | |
1398 | case AF_UNIX: | |
1399 | return socket_sockaddr_to_address_unix(sa, salen, errp); | |
1400 | #endif /* WIN32 */ | |
1401 | ||
6a02c806 SH |
1402 | #ifdef CONFIG_AF_VSOCK |
1403 | case AF_VSOCK: | |
1404 | return socket_sockaddr_to_address_vsock(sa, salen, errp); | |
1405 | #endif | |
1406 | ||
17c55dec DB |
1407 | default: |
1408 | error_setg(errp, "socket family %d unsupported", | |
1409 | sa->ss_family); | |
1410 | return NULL; | |
1411 | } | |
1412 | return 0; | |
1413 | } | |
1414 | ||
1415 | ||
bd269ebc | 1416 | SocketAddress *socket_local_address(int fd, Error **errp) |
17c55dec DB |
1417 | { |
1418 | struct sockaddr_storage ss; | |
1419 | socklen_t sslen = sizeof(ss); | |
1420 | ||
1421 | if (getsockname(fd, (struct sockaddr *)&ss, &sslen) < 0) { | |
b16a44e1 | 1422 | error_setg_errno(errp, errno, "%s", |
17c55dec DB |
1423 | "Unable to query local socket address"); |
1424 | return NULL; | |
1425 | } | |
1426 | ||
1427 | return socket_sockaddr_to_address(&ss, sslen, errp); | |
1428 | } | |
1429 | ||
1430 | ||
bd269ebc | 1431 | SocketAddress *socket_remote_address(int fd, Error **errp) |
17c55dec DB |
1432 | { |
1433 | struct sockaddr_storage ss; | |
1434 | socklen_t sslen = sizeof(ss); | |
1435 | ||
1436 | if (getpeername(fd, (struct sockaddr *)&ss, &sslen) < 0) { | |
b16a44e1 | 1437 | error_setg_errno(errp, errno, "%s", |
17c55dec DB |
1438 | "Unable to query remote socket address"); |
1439 | return NULL; | |
1440 | } | |
1441 | ||
1442 | return socket_sockaddr_to_address(&ss, sslen, errp); | |
1443 | } | |
2a8e21c7 | 1444 | |
216411b8 | 1445 | |
bd269ebc MA |
1446 | SocketAddress *socket_address_flatten(SocketAddressLegacy *addr_legacy) |
1447 | { | |
fc0f0059 | 1448 | SocketAddress *addr; |
bd269ebc MA |
1449 | |
1450 | if (!addr_legacy) { | |
1451 | return NULL; | |
1452 | } | |
1453 | ||
fc0f0059 MA |
1454 | addr = g_new(SocketAddress, 1); |
1455 | ||
bd269ebc | 1456 | switch (addr_legacy->type) { |
935a867c | 1457 | case SOCKET_ADDRESS_TYPE_INET: |
bd269ebc MA |
1458 | addr->type = SOCKET_ADDRESS_TYPE_INET; |
1459 | QAPI_CLONE_MEMBERS(InetSocketAddress, &addr->u.inet, | |
1460 | addr_legacy->u.inet.data); | |
1461 | break; | |
935a867c | 1462 | case SOCKET_ADDRESS_TYPE_UNIX: |
bd269ebc MA |
1463 | addr->type = SOCKET_ADDRESS_TYPE_UNIX; |
1464 | QAPI_CLONE_MEMBERS(UnixSocketAddress, &addr->u.q_unix, | |
1465 | addr_legacy->u.q_unix.data); | |
1466 | break; | |
935a867c | 1467 | case SOCKET_ADDRESS_TYPE_VSOCK: |
bd269ebc MA |
1468 | addr->type = SOCKET_ADDRESS_TYPE_VSOCK; |
1469 | QAPI_CLONE_MEMBERS(VsockSocketAddress, &addr->u.vsock, | |
1470 | addr_legacy->u.vsock.data); | |
1471 | break; | |
935a867c | 1472 | case SOCKET_ADDRESS_TYPE_FD: |
bd269ebc MA |
1473 | addr->type = SOCKET_ADDRESS_TYPE_FD; |
1474 | QAPI_CLONE_MEMBERS(String, &addr->u.fd, addr_legacy->u.fd.data); | |
1475 | break; | |
1476 | default: | |
1477 | abort(); | |
1478 | } | |
1479 | ||
1480 | return addr; | |
1481 | } |