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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 | ||
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) { |
39b6efc8 | 281 | getnameinfo((struct sockaddr*)e->ai_addr,e->ai_addrlen, |
7d37435b PB |
282 | uaddr,INET6_ADDRSTRLEN,uport,32, |
283 | NI_NUMERICHOST | NI_NUMERICSERV); | |
39f80521 | 284 | |
877691f9 | 285 | port_min = inet_getport(e); |
1856835d | 286 | port_max = saddr->has_to ? saddr->to + port_offset : port_min; |
877691f9 MA |
287 | for (p = port_min; p <= port_max; p++) { |
288 | inet_setport(e, p); | |
10a7b7e6 DB |
289 | |
290 | slisten = create_fast_reuse_socket(e); | |
291 | if (slisten < 0) { | |
292 | /* First time we expect we might fail to create the socket | |
293 | * eg if 'e' has AF_INET6 but ipv6 kmod is not loaded. | |
294 | * Later iterations should always succeed if first iteration | |
295 | * worked though, so treat that as fatal. | |
296 | */ | |
297 | if (p == port_min) { | |
9cf961bb KO |
298 | continue; |
299 | } else { | |
10a7b7e6 DB |
300 | error_setg_errno(errp, errno, |
301 | "Failed to recreate failed listening socket"); | |
9cf961bb | 302 | goto listen_failed; |
029409e5 | 303 | } |
d247d25f | 304 | } |
10a7b7e6 DB |
305 | socket_created = true; |
306 | ||
307 | rc = try_bind(slisten, saddr, e); | |
308 | if (rc < 0) { | |
309 | if (errno != EADDRINUSE) { | |
310 | error_setg_errno(errp, errno, "Failed to bind socket"); | |
311 | goto listen_failed; | |
312 | } | |
313 | } else { | |
e5b6353c | 314 | if (!listen(slisten, num)) { |
10a7b7e6 DB |
315 | goto listen_ok; |
316 | } | |
317 | if (errno != EADDRINUSE) { | |
318 | error_setg_errno(errp, errno, "Failed to listen on socket"); | |
319 | goto listen_failed; | |
320 | } | |
9cf961bb KO |
321 | } |
322 | /* Someone else managed to bind to the same port and beat us | |
323 | * to listen on it! Socket semantics does not allow us to | |
324 | * recover from this situation, so we need to recreate the | |
325 | * socket to allow bind attempts for subsequent ports: | |
326 | */ | |
327 | closesocket(slisten); | |
10a7b7e6 | 328 | slisten = -1; |
d247d25f | 329 | } |
9cf961bb KO |
330 | } |
331 | error_setg_errno(errp, errno, | |
332 | socket_created ? | |
333 | "Failed to find an available port" : | |
334 | "Failed to create a socket"); | |
335 | listen_failed: | |
336 | saved_errno = errno; | |
337 | if (slisten >= 0) { | |
d247d25f AL |
338 | closesocket(slisten); |
339 | } | |
d247d25f | 340 | freeaddrinfo(res); |
9cf961bb | 341 | errno = saved_errno; |
d247d25f AL |
342 | return -1; |
343 | ||
9cf961bb | 344 | listen_ok: |
d247d25f AL |
345 | freeaddrinfo(res); |
346 | return slisten; | |
347 | } | |
348 | ||
05bc1d8a MT |
349 | #ifdef _WIN32 |
350 | #define QEMU_SOCKET_RC_INPROGRESS(rc) \ | |
351 | ((rc) == -EINPROGRESS || (rc) == -EWOULDBLOCK || (rc) == -WSAEALREADY) | |
352 | #else | |
353 | #define QEMU_SOCKET_RC_INPROGRESS(rc) \ | |
354 | ((rc) == -EINPROGRESS) | |
355 | #endif | |
356 | ||
b2587932 | 357 | static int inet_connect_addr(struct addrinfo *addr, Error **errp); |
233aa5c2 | 358 | |
b2587932 | 359 | static int inet_connect_addr(struct addrinfo *addr, Error **errp) |
233aa5c2 OW |
360 | { |
361 | int sock, rc; | |
362 | ||
05bc1d8a MT |
363 | sock = qemu_socket(addr->ai_family, addr->ai_socktype, addr->ai_protocol); |
364 | if (sock < 0) { | |
235256a2 | 365 | error_setg_errno(errp, errno, "Failed to create socket"); |
05bc1d8a MT |
366 | return -1; |
367 | } | |
04fd1c78 | 368 | socket_set_fast_reuse(sock); |
b2587932 | 369 | |
05bc1d8a MT |
370 | /* connect to peer */ |
371 | do { | |
372 | rc = 0; | |
373 | if (connect(sock, addr->ai_addr, addr->ai_addrlen) < 0) { | |
b16a44e1 | 374 | rc = -errno; |
05bc1d8a MT |
375 | } |
376 | } while (rc == -EINTR); | |
377 | ||
b2587932 | 378 | if (rc < 0) { |
235256a2 | 379 | error_setg_errno(errp, errno, "Failed to connect socket"); |
05bc1d8a MT |
380 | closesocket(sock); |
381 | return -1; | |
382 | } | |
b2587932 | 383 | |
05bc1d8a MT |
384 | return sock; |
385 | } | |
386 | ||
2942e420 DB |
387 | static struct addrinfo *inet_parse_connect_saddr(InetSocketAddress *saddr, |
388 | Error **errp) | |
05bc1d8a MT |
389 | { |
390 | struct addrinfo ai, *res; | |
391 | int rc; | |
2942e420 | 392 | Error *err = NULL; |
340849a9 | 393 | static int useV4Mapped = 1; |
d247d25f | 394 | |
05bc1d8a | 395 | memset(&ai, 0, sizeof(ai)); |
233aa5c2 | 396 | |
340849a9 DB |
397 | ai.ai_flags = AI_CANONNAME | AI_ADDRCONFIG; |
398 | if (atomic_read(&useV4Mapped)) { | |
399 | ai.ai_flags |= AI_V4MAPPED; | |
400 | } | |
2942e420 | 401 | ai.ai_family = inet_ai_family_from_address(saddr, &err); |
f4c94c7c | 402 | ai.ai_socktype = SOCK_STREAM; |
d247d25f | 403 | |
2942e420 DB |
404 | if (err) { |
405 | error_propagate(errp, err); | |
05bc1d8a | 406 | return NULL; |
d247d25f AL |
407 | } |
408 | ||
2942e420 DB |
409 | if (saddr->host == NULL || saddr->port == NULL) { |
410 | error_setg(errp, "host and/or port not specified"); | |
411 | return NULL; | |
05bc1d8a | 412 | } |
d247d25f AL |
413 | |
414 | /* lookup */ | |
2942e420 | 415 | rc = getaddrinfo(saddr->host, saddr->port, &ai, &res); |
340849a9 DB |
416 | |
417 | /* At least FreeBSD and OS-X 10.6 declare AI_V4MAPPED but | |
418 | * then don't implement it in their getaddrinfo(). Detect | |
419 | * this and retry without the flag since that's preferrable | |
420 | * to a fatal error | |
421 | */ | |
422 | if (rc == EAI_BADFLAGS && | |
423 | (ai.ai_flags & AI_V4MAPPED)) { | |
424 | atomic_set(&useV4Mapped, 0); | |
425 | ai.ai_flags &= ~AI_V4MAPPED; | |
426 | rc = getaddrinfo(saddr->host, saddr->port, &ai, &res); | |
427 | } | |
05bc1d8a | 428 | if (rc != 0) { |
2942e420 DB |
429 | error_setg(errp, "address resolution failed for %s:%s: %s", |
430 | saddr->host, saddr->port, gai_strerror(rc)); | |
05bc1d8a MT |
431 | return NULL; |
432 | } | |
433 | return res; | |
434 | } | |
435 | ||
5db5f44c OW |
436 | /** |
437 | * Create a socket and connect it to an address. | |
438 | * | |
2942e420 | 439 | * @saddr: Inet socket address specification |
5db5f44c OW |
440 | * @errp: set on error |
441 | * | |
442 | * Returns: -1 on error, file descriptor on success. | |
443 | */ | |
b2587932 | 444 | int inet_connect_saddr(InetSocketAddress *saddr, Error **errp) |
05bc1d8a | 445 | { |
3f9286b7 | 446 | Error *local_err = NULL; |
05bc1d8a MT |
447 | struct addrinfo *res, *e; |
448 | int sock = -1; | |
05bc1d8a | 449 | |
2942e420 | 450 | res = inet_parse_connect_saddr(saddr, errp); |
05bc1d8a MT |
451 | if (!res) { |
452 | return -1; | |
453 | } | |
454 | ||
d247d25f | 455 | for (e = res; e != NULL; e = e->ai_next) { |
3f9286b7 MA |
456 | error_free(local_err); |
457 | local_err = NULL; | |
b2587932 | 458 | sock = inet_connect_addr(e, &local_err); |
3f9286b7 | 459 | if (sock >= 0) { |
05bc1d8a | 460 | break; |
a6ba35b3 | 461 | } |
d247d25f | 462 | } |
3f9286b7 MA |
463 | |
464 | if (sock < 0) { | |
465 | error_propagate(errp, local_err); | |
3f9286b7 | 466 | } |
b2587932 | 467 | |
d247d25f | 468 | freeaddrinfo(res); |
aec21d31 VSO |
469 | |
470 | if (saddr->keep_alive) { | |
471 | int val = 1; | |
472 | int ret = qemu_setsockopt(sock, SOL_SOCKET, SO_KEEPALIVE, | |
473 | &val, sizeof(val)); | |
474 | ||
475 | if (ret < 0) { | |
476 | error_setg_errno(errp, errno, "Unable to set KEEPALIVE"); | |
477 | close(sock); | |
478 | return -1; | |
479 | } | |
480 | } | |
481 | ||
05bc1d8a | 482 | return sock; |
d247d25f AL |
483 | } |
484 | ||
8b39910e DB |
485 | static int inet_dgram_saddr(InetSocketAddress *sraddr, |
486 | InetSocketAddress *sladdr, | |
487 | Error **errp) | |
7e1b35b4 GH |
488 | { |
489 | struct addrinfo ai, *peer = NULL, *local = NULL; | |
490 | const char *addr; | |
491 | const char *port; | |
7e1b35b4 | 492 | int sock = -1, rc; |
8b39910e | 493 | Error *err = NULL; |
7e1b35b4 GH |
494 | |
495 | /* lookup peer addr */ | |
496 | memset(&ai,0, sizeof(ai)); | |
3de3d698 | 497 | ai.ai_flags = AI_CANONNAME | AI_V4MAPPED | AI_ADDRCONFIG; |
8b39910e | 498 | ai.ai_family = inet_ai_family_from_address(sraddr, &err); |
7e1b35b4 GH |
499 | ai.ai_socktype = SOCK_DGRAM; |
500 | ||
8b39910e DB |
501 | if (err) { |
502 | error_propagate(errp, err); | |
58c652c0 | 503 | goto err; |
8b39910e DB |
504 | } |
505 | ||
506 | addr = sraddr->host; | |
507 | port = sraddr->port; | |
7e1b35b4 GH |
508 | if (addr == NULL || strlen(addr) == 0) { |
509 | addr = "localhost"; | |
510 | } | |
511 | if (port == NULL || strlen(port) == 0) { | |
4f085c82 | 512 | error_setg(errp, "remote port not specified"); |
58c652c0 | 513 | goto err; |
7e1b35b4 GH |
514 | } |
515 | ||
9cd1883c | 516 | if ((rc = getaddrinfo(addr, port, &ai, &peer)) != 0) { |
4f085c82 PB |
517 | error_setg(errp, "address resolution failed for %s:%s: %s", addr, port, |
518 | gai_strerror(rc)); | |
26015051 | 519 | goto err; |
7e1b35b4 | 520 | } |
7e1b35b4 GH |
521 | |
522 | /* lookup local addr */ | |
523 | memset(&ai,0, sizeof(ai)); | |
524 | ai.ai_flags = AI_PASSIVE; | |
525 | ai.ai_family = peer->ai_family; | |
526 | ai.ai_socktype = SOCK_DGRAM; | |
527 | ||
8b39910e DB |
528 | if (sladdr) { |
529 | addr = sladdr->host; | |
530 | port = sladdr->port; | |
531 | if (addr == NULL || strlen(addr) == 0) { | |
532 | addr = NULL; | |
533 | } | |
534 | if (!port || strlen(port) == 0) { | |
535 | port = "0"; | |
536 | } | |
537 | } else { | |
7e1b35b4 | 538 | addr = NULL; |
7e1b35b4 | 539 | port = "0"; |
8b39910e | 540 | } |
7e1b35b4 | 541 | |
9cd1883c | 542 | if ((rc = getaddrinfo(addr, port, &ai, &local)) != 0) { |
4f085c82 PB |
543 | error_setg(errp, "address resolution failed for %s:%s: %s", addr, port, |
544 | gai_strerror(rc)); | |
39b38459 | 545 | goto err; |
7e1b35b4 | 546 | } |
7e1b35b4 GH |
547 | |
548 | /* create socket */ | |
40ff6d7e | 549 | sock = qemu_socket(peer->ai_family, peer->ai_socktype, peer->ai_protocol); |
7e1b35b4 | 550 | if (sock < 0) { |
235256a2 | 551 | error_setg_errno(errp, errno, "Failed to create socket"); |
7e1b35b4 GH |
552 | goto err; |
553 | } | |
04fd1c78 | 554 | socket_set_fast_reuse(sock); |
7e1b35b4 GH |
555 | |
556 | /* bind socket */ | |
7e1b35b4 | 557 | if (bind(sock, local->ai_addr, local->ai_addrlen) < 0) { |
235256a2 | 558 | error_setg_errno(errp, errno, "Failed to bind socket"); |
7e1b35b4 GH |
559 | goto err; |
560 | } | |
561 | ||
562 | /* connect to peer */ | |
7e1b35b4 | 563 | if (connect(sock,peer->ai_addr,peer->ai_addrlen) < 0) { |
235256a2 | 564 | error_setg_errno(errp, errno, "Failed to connect socket"); |
7e1b35b4 GH |
565 | goto err; |
566 | } | |
567 | ||
568 | freeaddrinfo(local); | |
569 | freeaddrinfo(peer); | |
570 | return sock; | |
571 | ||
572 | err: | |
26015051 | 573 | if (sock != -1) { |
7e1b35b4 | 574 | closesocket(sock); |
26015051 C |
575 | } |
576 | if (local) { | |
7e1b35b4 | 577 | freeaddrinfo(local); |
26015051 C |
578 | } |
579 | if (peer) { | |
7e1b35b4 | 580 | freeaddrinfo(peer); |
26015051 C |
581 | } |
582 | ||
7e1b35b4 GH |
583 | return -1; |
584 | } | |
585 | ||
f4c94c7c | 586 | /* compatibility wrapper */ |
3e32370a DB |
587 | static int inet_parse_flag(const char *flagname, const char *optstr, bool *val, |
588 | Error **errp) | |
589 | { | |
590 | char *end; | |
591 | size_t len; | |
592 | ||
593 | end = strstr(optstr, ","); | |
594 | if (end) { | |
595 | if (end[1] == ',') { /* Reject 'ipv6=on,,foo' */ | |
596 | error_setg(errp, "error parsing '%s' flag '%s'", flagname, optstr); | |
597 | return -1; | |
598 | } | |
599 | len = end - optstr; | |
600 | } else { | |
601 | len = strlen(optstr); | |
602 | } | |
603 | if (len == 0 || (len == 3 && strncmp(optstr, "=on", len) == 0)) { | |
604 | *val = true; | |
605 | } else if (len == 4 && strncmp(optstr, "=off", len) == 0) { | |
606 | *val = false; | |
607 | } else { | |
608 | error_setg(errp, "error parsing '%s' flag '%s'", flagname, optstr); | |
609 | return -1; | |
610 | } | |
611 | return 0; | |
612 | } | |
613 | ||
0785bd7a | 614 | int inet_parse(InetSocketAddress *addr, const char *str, Error **errp) |
f4c94c7c GH |
615 | { |
616 | const char *optstr, *h; | |
55a10996 | 617 | char host[65]; |
f4c94c7c | 618 | char port[33]; |
879e45c7 | 619 | int to; |
f4c94c7c | 620 | int pos; |
3e32370a | 621 | char *begin; |
f4c94c7c | 622 | |
0785bd7a | 623 | memset(addr, 0, sizeof(*addr)); |
879e45c7 | 624 | |
f4c94c7c GH |
625 | /* parse address */ |
626 | if (str[0] == ':') { | |
627 | /* no host given */ | |
879e45c7 | 628 | host[0] = '\0'; |
9cd1883c | 629 | if (sscanf(str, ":%32[^,]%n", port, &pos) != 1) { |
2f002c43 | 630 | error_setg(errp, "error parsing port in address '%s'", str); |
0785bd7a | 631 | return -1; |
f4c94c7c GH |
632 | } |
633 | } else if (str[0] == '[') { | |
634 | /* IPv6 addr */ | |
9cd1883c | 635 | if (sscanf(str, "[%64[^]]]:%32[^,]%n", host, port, &pos) != 2) { |
2f002c43 | 636 | error_setg(errp, "error parsing IPv6 address '%s'", str); |
0785bd7a | 637 | return -1; |
f4c94c7c | 638 | } |
f4c94c7c | 639 | } else { |
391b7b97 | 640 | /* hostname or IPv4 addr */ |
9cd1883c | 641 | if (sscanf(str, "%64[^:]:%32[^,]%n", host, port, &pos) != 2) { |
2f002c43 | 642 | error_setg(errp, "error parsing address '%s'", str); |
0785bd7a | 643 | return -1; |
f4c94c7c GH |
644 | } |
645 | } | |
879e45c7 PB |
646 | |
647 | addr->host = g_strdup(host); | |
648 | addr->port = g_strdup(port); | |
f4c94c7c GH |
649 | |
650 | /* parse options */ | |
651 | optstr = str + pos; | |
652 | h = strstr(optstr, ",to="); | |
879e45c7 | 653 | if (h) { |
1ccbc285 AP |
654 | h += 4; |
655 | if (sscanf(h, "%d%n", &to, &pos) != 1 || | |
656 | (h[pos] != '\0' && h[pos] != ',')) { | |
879e45c7 | 657 | error_setg(errp, "error parsing to= argument"); |
0785bd7a | 658 | return -1; |
879e45c7 PB |
659 | } |
660 | addr->has_to = true; | |
661 | addr->to = to; | |
662 | } | |
3e32370a DB |
663 | begin = strstr(optstr, ",ipv4"); |
664 | if (begin) { | |
665 | if (inet_parse_flag("ipv4", begin + 5, &addr->ipv4, errp) < 0) { | |
666 | return -1; | |
667 | } | |
668 | addr->has_ipv4 = true; | |
879e45c7 | 669 | } |
3e32370a DB |
670 | begin = strstr(optstr, ",ipv6"); |
671 | if (begin) { | |
672 | if (inet_parse_flag("ipv6", begin + 5, &addr->ipv6, errp) < 0) { | |
673 | return -1; | |
674 | } | |
675 | addr->has_ipv6 = true; | |
879e45c7 | 676 | } |
aec21d31 VSO |
677 | begin = strstr(optstr, ",keep-alive"); |
678 | if (begin) { | |
679 | if (inet_parse_flag("keep-alive", begin + strlen(",keep-alive"), | |
680 | &addr->keep_alive, errp) < 0) | |
681 | { | |
682 | return -1; | |
683 | } | |
684 | addr->has_keep_alive = true; | |
685 | } | |
0785bd7a | 686 | return 0; |
879e45c7 PB |
687 | } |
688 | ||
e5bc776f | 689 | |
5db5f44c OW |
690 | /** |
691 | * Create a blocking socket and connect it to an address. | |
692 | * | |
693 | * @str: address string | |
694 | * @errp: set in case of an error | |
695 | * | |
696 | * Returns -1 in case of error, file descriptor on success | |
697 | **/ | |
698 | int inet_connect(const char *str, Error **errp) | |
f4c94c7c | 699 | { |
f4c94c7c | 700 | int sock = -1; |
0785bd7a | 701 | InetSocketAddress *addr = g_new(InetSocketAddress, 1); |
f4c94c7c | 702 | |
0785bd7a | 703 | if (!inet_parse(addr, str, errp)) { |
b2587932 | 704 | sock = inet_connect_saddr(addr, errp); |
5db5f44c | 705 | } |
0785bd7a | 706 | qapi_free_InetSocketAddress(addr); |
5db5f44c OW |
707 | return sock; |
708 | } | |
709 | ||
6a02c806 SH |
710 | #ifdef CONFIG_AF_VSOCK |
711 | static bool vsock_parse_vaddr_to_sockaddr(const VsockSocketAddress *vaddr, | |
712 | struct sockaddr_vm *svm, | |
713 | Error **errp) | |
714 | { | |
715 | unsigned long long val; | |
716 | ||
717 | memset(svm, 0, sizeof(*svm)); | |
718 | svm->svm_family = AF_VSOCK; | |
719 | ||
720 | if (parse_uint_full(vaddr->cid, &val, 10) < 0 || | |
721 | val > UINT32_MAX) { | |
722 | error_setg(errp, "Failed to parse cid '%s'", vaddr->cid); | |
723 | return false; | |
724 | } | |
725 | svm->svm_cid = val; | |
726 | ||
727 | if (parse_uint_full(vaddr->port, &val, 10) < 0 || | |
728 | val > UINT32_MAX) { | |
729 | error_setg(errp, "Failed to parse port '%s'", vaddr->port); | |
730 | return false; | |
731 | } | |
732 | svm->svm_port = val; | |
733 | ||
734 | return true; | |
735 | } | |
736 | ||
b2587932 | 737 | static int vsock_connect_addr(const struct sockaddr_vm *svm, Error **errp) |
6a02c806 SH |
738 | { |
739 | int sock, rc; | |
740 | ||
6a02c806 SH |
741 | sock = qemu_socket(AF_VSOCK, SOCK_STREAM, 0); |
742 | if (sock < 0) { | |
743 | error_setg_errno(errp, errno, "Failed to create socket"); | |
744 | return -1; | |
745 | } | |
b2587932 | 746 | |
6a02c806 SH |
747 | /* connect to peer */ |
748 | do { | |
749 | rc = 0; | |
750 | if (connect(sock, (const struct sockaddr *)svm, sizeof(*svm)) < 0) { | |
751 | rc = -errno; | |
752 | } | |
753 | } while (rc == -EINTR); | |
754 | ||
b2587932 | 755 | if (rc < 0) { |
6a02c806 SH |
756 | error_setg_errno(errp, errno, "Failed to connect socket"); |
757 | closesocket(sock); | |
758 | return -1; | |
759 | } | |
b2587932 | 760 | |
6a02c806 SH |
761 | return sock; |
762 | } | |
763 | ||
b2587932 | 764 | static int vsock_connect_saddr(VsockSocketAddress *vaddr, Error **errp) |
6a02c806 SH |
765 | { |
766 | struct sockaddr_vm svm; | |
767 | int sock = -1; | |
6a02c806 SH |
768 | |
769 | if (!vsock_parse_vaddr_to_sockaddr(vaddr, &svm, errp)) { | |
770 | return -1; | |
771 | } | |
772 | ||
b2587932 | 773 | sock = vsock_connect_addr(&svm, errp); |
6a02c806 | 774 | |
6a02c806 SH |
775 | return sock; |
776 | } | |
777 | ||
778 | static int vsock_listen_saddr(VsockSocketAddress *vaddr, | |
e5b6353c | 779 | int num, |
6a02c806 SH |
780 | Error **errp) |
781 | { | |
782 | struct sockaddr_vm svm; | |
783 | int slisten; | |
784 | ||
785 | if (!vsock_parse_vaddr_to_sockaddr(vaddr, &svm, errp)) { | |
786 | return -1; | |
787 | } | |
788 | ||
789 | slisten = qemu_socket(AF_VSOCK, SOCK_STREAM, 0); | |
790 | if (slisten < 0) { | |
791 | error_setg_errno(errp, errno, "Failed to create socket"); | |
792 | return -1; | |
793 | } | |
794 | ||
795 | if (bind(slisten, (const struct sockaddr *)&svm, sizeof(svm)) != 0) { | |
796 | error_setg_errno(errp, errno, "Failed to bind socket"); | |
797 | closesocket(slisten); | |
798 | return -1; | |
799 | } | |
800 | ||
e5b6353c | 801 | if (listen(slisten, num) != 0) { |
6a02c806 SH |
802 | error_setg_errno(errp, errno, "Failed to listen on socket"); |
803 | closesocket(slisten); | |
804 | return -1; | |
805 | } | |
806 | return slisten; | |
807 | } | |
808 | ||
4db5c619 MA |
809 | static int vsock_parse(VsockSocketAddress *addr, const char *str, |
810 | Error **errp) | |
6a02c806 | 811 | { |
6a02c806 SH |
812 | char cid[33]; |
813 | char port[33]; | |
814 | int n; | |
815 | ||
816 | if (sscanf(str, "%32[^:]:%32[^,]%n", cid, port, &n) != 2) { | |
817 | error_setg(errp, "error parsing address '%s'", str); | |
4db5c619 | 818 | return -1; |
6a02c806 SH |
819 | } |
820 | if (str[n] != '\0') { | |
821 | error_setg(errp, "trailing characters in address '%s'", str); | |
4db5c619 | 822 | return -1; |
6a02c806 SH |
823 | } |
824 | ||
6a02c806 SH |
825 | addr->cid = g_strdup(cid); |
826 | addr->port = g_strdup(port); | |
4db5c619 | 827 | return 0; |
6a02c806 SH |
828 | } |
829 | #else | |
830 | static void vsock_unsupported(Error **errp) | |
831 | { | |
832 | error_setg(errp, "socket family AF_VSOCK unsupported"); | |
833 | } | |
834 | ||
b2587932 | 835 | static int vsock_connect_saddr(VsockSocketAddress *vaddr, Error **errp) |
6a02c806 SH |
836 | { |
837 | vsock_unsupported(errp); | |
838 | return -1; | |
839 | } | |
840 | ||
841 | static int vsock_listen_saddr(VsockSocketAddress *vaddr, | |
e5b6353c | 842 | int num, |
6a02c806 SH |
843 | Error **errp) |
844 | { | |
845 | vsock_unsupported(errp); | |
846 | return -1; | |
847 | } | |
848 | ||
4db5c619 MA |
849 | static int vsock_parse(VsockSocketAddress *addr, const char *str, |
850 | Error **errp) | |
6a02c806 SH |
851 | { |
852 | vsock_unsupported(errp); | |
4db5c619 | 853 | return -1; |
6a02c806 SH |
854 | } |
855 | #endif /* CONFIG_AF_VSOCK */ | |
856 | ||
d247d25f AL |
857 | #ifndef _WIN32 |
858 | ||
1856835d | 859 | static int unix_listen_saddr(UnixSocketAddress *saddr, |
e5b6353c | 860 | int num, |
1856835d | 861 | Error **errp) |
d247d25f AL |
862 | { |
863 | struct sockaddr_un un; | |
62b6adfb | 864 | int sock, fd; |
ad9579aa DB |
865 | char *pathbuf = NULL; |
866 | const char *path; | |
2d2023c3 | 867 | size_t pathlen; |
d247d25f | 868 | |
40ff6d7e | 869 | sock = qemu_socket(PF_UNIX, SOCK_STREAM, 0); |
d247d25f | 870 | if (sock < 0) { |
b658c53d | 871 | error_setg_errno(errp, errno, "Failed to create Unix socket"); |
39b6efc8 | 872 | return -1; |
d247d25f AL |
873 | } |
874 | ||
ad9579aa DB |
875 | if (saddr->path && saddr->path[0]) { |
876 | path = saddr->path; | |
d247d25f | 877 | } else { |
b658c53d PB |
878 | const char *tmpdir = getenv("TMPDIR"); |
879 | tmpdir = tmpdir ? tmpdir : "/tmp"; | |
ad9579aa DB |
880 | path = pathbuf = g_strdup_printf("%s/qemu-socket-XXXXXX", tmpdir); |
881 | } | |
b658c53d | 882 | |
2d2023c3 DB |
883 | pathlen = strlen(path); |
884 | if (pathlen > sizeof(un.sun_path)) { | |
ad9579aa DB |
885 | error_setg(errp, "UNIX socket path '%s' is too long", path); |
886 | error_append_hint(errp, "Path must be less than %zu bytes\n", | |
887 | sizeof(un.sun_path)); | |
888 | goto err; | |
889 | } | |
890 | ||
891 | if (pathbuf != NULL) { | |
d247d25f AL |
892 | /* |
893 | * This dummy fd usage silences the mktemp() unsecure warning. | |
894 | * Using mkstemp() doesn't make things more secure here | |
895 | * though. bind() complains about existing files, so we have | |
896 | * to unlink first and thus re-open the race window. The | |
897 | * worst case possible is bind() failing, i.e. a DoS attack. | |
898 | */ | |
ad9579aa | 899 | fd = mkstemp(pathbuf); |
b658c53d PB |
900 | if (fd < 0) { |
901 | error_setg_errno(errp, errno, | |
ad9579aa | 902 | "Failed to make a temporary socket %s", pathbuf); |
b658c53d PB |
903 | goto err; |
904 | } | |
905 | close(fd); | |
d247d25f | 906 | } |
d247d25f | 907 | |
ad9579aa | 908 | if (unlink(path) < 0 && errno != ENOENT) { |
0ef705a2 | 909 | error_setg_errno(errp, errno, |
ad9579aa | 910 | "Failed to unlink socket %s", path); |
0ef705a2 CR |
911 | goto err; |
912 | } | |
ad9579aa DB |
913 | |
914 | memset(&un, 0, sizeof(un)); | |
915 | un.sun_family = AF_UNIX; | |
2d2023c3 | 916 | memcpy(un.sun_path, path, pathlen); |
ad9579aa | 917 | |
d247d25f | 918 | if (bind(sock, (struct sockaddr*) &un, sizeof(un)) < 0) { |
56382bd5 | 919 | error_setg_errno(errp, errno, "Failed to bind socket to %s", path); |
d247d25f AL |
920 | goto err; |
921 | } | |
e5b6353c | 922 | if (listen(sock, num) < 0) { |
235256a2 | 923 | error_setg_errno(errp, errno, "Failed to listen on socket"); |
d247d25f AL |
924 | goto err; |
925 | } | |
926 | ||
62473511 | 927 | g_free(pathbuf); |
d247d25f AL |
928 | return sock; |
929 | ||
930 | err: | |
ad9579aa | 931 | g_free(pathbuf); |
d247d25f AL |
932 | closesocket(sock); |
933 | return -1; | |
934 | } | |
935 | ||
b2587932 | 936 | static int unix_connect_saddr(UnixSocketAddress *saddr, Error **errp) |
d247d25f AL |
937 | { |
938 | struct sockaddr_un un; | |
1fc05adf | 939 | int sock, rc; |
2d2023c3 | 940 | size_t pathlen; |
d247d25f | 941 | |
2942e420 | 942 | if (saddr->path == NULL) { |
312fd5f2 | 943 | error_setg(errp, "unix connect: no path specified"); |
2af2bf67 GH |
944 | return -1; |
945 | } | |
946 | ||
40ff6d7e | 947 | sock = qemu_socket(PF_UNIX, SOCK_STREAM, 0); |
d247d25f | 948 | if (sock < 0) { |
235256a2 | 949 | error_setg_errno(errp, errno, "Failed to create socket"); |
39b6efc8 | 950 | return -1; |
d247d25f AL |
951 | } |
952 | ||
2d2023c3 DB |
953 | pathlen = strlen(saddr->path); |
954 | if (pathlen > sizeof(un.sun_path)) { | |
ad9579aa DB |
955 | error_setg(errp, "UNIX socket path '%s' is too long", saddr->path); |
956 | error_append_hint(errp, "Path must be less than %zu bytes\n", | |
957 | sizeof(un.sun_path)); | |
958 | goto err; | |
959 | } | |
960 | ||
d247d25f AL |
961 | memset(&un, 0, sizeof(un)); |
962 | un.sun_family = AF_UNIX; | |
2d2023c3 | 963 | memcpy(un.sun_path, saddr->path, pathlen); |
1fc05adf PB |
964 | |
965 | /* connect to peer */ | |
966 | do { | |
967 | rc = 0; | |
968 | if (connect(sock, (struct sockaddr *) &un, sizeof(un)) < 0) { | |
b16a44e1 | 969 | rc = -errno; |
1fc05adf PB |
970 | } |
971 | } while (rc == -EINTR); | |
972 | ||
1fc05adf | 973 | if (rc < 0) { |
ad9579aa DB |
974 | error_setg_errno(errp, -rc, "Failed to connect socket %s", |
975 | saddr->path); | |
976 | goto err; | |
d247d25f AL |
977 | } |
978 | ||
d247d25f | 979 | return sock; |
ad9579aa DB |
980 | |
981 | err: | |
982 | close(sock); | |
ad9579aa | 983 | return -1; |
d247d25f AL |
984 | } |
985 | ||
0c814709 PB |
986 | #else |
987 | ||
1856835d | 988 | static int unix_listen_saddr(UnixSocketAddress *saddr, |
e5b6353c | 989 | int num, |
1856835d | 990 | Error **errp) |
0c814709 | 991 | { |
58899664 | 992 | error_setg(errp, "unix sockets are not available on windows"); |
0c814709 PB |
993 | errno = ENOTSUP; |
994 | return -1; | |
995 | } | |
996 | ||
b2587932 | 997 | static int unix_connect_saddr(UnixSocketAddress *saddr, Error **errp) |
0c814709 | 998 | { |
58899664 | 999 | error_setg(errp, "unix sockets are not available on windows"); |
0c814709 PB |
1000 | errno = ENOTSUP; |
1001 | return -1; | |
1002 | } | |
1003 | #endif | |
1004 | ||
2af2bf67 | 1005 | /* compatibility wrapper */ |
62473511 | 1006 | int unix_listen(const char *str, Error **errp) |
62b6adfb | 1007 | { |
1856835d | 1008 | UnixSocketAddress *saddr; |
caf88d74 | 1009 | int sock; |
62b6adfb | 1010 | |
1856835d | 1011 | saddr = g_new0(UnixSocketAddress, 1); |
caf88d74 | 1012 | saddr->path = g_strdup(str); |
e5b6353c | 1013 | sock = unix_listen_saddr(saddr, 1, errp); |
1856835d | 1014 | qapi_free_UnixSocketAddress(saddr); |
62b6adfb GH |
1015 | return sock; |
1016 | } | |
1017 | ||
7fc4e63e | 1018 | int unix_connect(const char *path, Error **errp) |
2af2bf67 | 1019 | { |
2942e420 | 1020 | UnixSocketAddress *saddr; |
2af2bf67 GH |
1021 | int sock; |
1022 | ||
2942e420 DB |
1023 | saddr = g_new0(UnixSocketAddress, 1); |
1024 | saddr->path = g_strdup(path); | |
b2587932 | 1025 | sock = unix_connect_saddr(saddr, errp); |
2942e420 | 1026 | qapi_free_UnixSocketAddress(saddr); |
1fc05adf PB |
1027 | return sock; |
1028 | } | |
1029 | ||
1030 | ||
bd269ebc | 1031 | SocketAddress *socket_parse(const char *str, Error **errp) |
101f9cbc | 1032 | { |
bd269ebc | 1033 | SocketAddress *addr; |
101f9cbc | 1034 | |
bd269ebc | 1035 | addr = g_new0(SocketAddress, 1); |
101f9cbc PB |
1036 | if (strstart(str, "unix:", NULL)) { |
1037 | if (str[5] == '\0') { | |
312fd5f2 | 1038 | error_setg(errp, "invalid Unix socket address"); |
101f9cbc PB |
1039 | goto fail; |
1040 | } else { | |
bd269ebc MA |
1041 | addr->type = SOCKET_ADDRESS_TYPE_UNIX; |
1042 | addr->u.q_unix.path = g_strdup(str + 5); | |
101f9cbc PB |
1043 | } |
1044 | } else if (strstart(str, "fd:", NULL)) { | |
1045 | if (str[3] == '\0') { | |
312fd5f2 | 1046 | error_setg(errp, "invalid file descriptor address"); |
101f9cbc PB |
1047 | goto fail; |
1048 | } else { | |
bd269ebc MA |
1049 | addr->type = SOCKET_ADDRESS_TYPE_FD; |
1050 | addr->u.fd.str = g_strdup(str + 3); | |
101f9cbc | 1051 | } |
6a02c806 | 1052 | } else if (strstart(str, "vsock:", NULL)) { |
bd269ebc MA |
1053 | addr->type = SOCKET_ADDRESS_TYPE_VSOCK; |
1054 | if (vsock_parse(&addr->u.vsock, str + strlen("vsock:"), errp)) { | |
6a02c806 SH |
1055 | goto fail; |
1056 | } | |
101f9cbc | 1057 | } else { |
bd269ebc MA |
1058 | addr->type = SOCKET_ADDRESS_TYPE_INET; |
1059 | if (inet_parse(&addr->u.inet, str, errp)) { | |
101f9cbc PB |
1060 | goto fail; |
1061 | } | |
1062 | } | |
1063 | return addr; | |
1064 | ||
1065 | fail: | |
bd269ebc | 1066 | qapi_free_SocketAddress(addr); |
101f9cbc PB |
1067 | return NULL; |
1068 | } | |
1069 | ||
e5b6353c | 1070 | static int socket_get_fd(const char *fdstr, int num, Error **errp) |
30bdb3c5 | 1071 | { |
1723d6b1 | 1072 | int fd; |
e5b6353c JQ |
1073 | if (num != 1) { |
1074 | error_setg_errno(errp, EINVAL, "socket_get_fd: too many connections"); | |
1075 | return -1; | |
1076 | } | |
1723d6b1 DB |
1077 | if (cur_mon) { |
1078 | fd = monitor_get_fd(cur_mon, fdstr, errp); | |
1079 | if (fd < 0) { | |
1080 | return -1; | |
1081 | } | |
1082 | } else { | |
1083 | if (qemu_strtoi(fdstr, NULL, 10, &fd) < 0) { | |
1084 | error_setg_errno(errp, errno, | |
1085 | "Unable to parse FD number %s", | |
1086 | fdstr); | |
1087 | return -1; | |
1088 | } | |
30bdb3c5 DB |
1089 | } |
1090 | if (!fd_is_socket(fd)) { | |
1091 | error_setg(errp, "File descriptor '%s' is not a socket", fdstr); | |
1092 | close(fd); | |
1093 | return -1; | |
1094 | } | |
1095 | return fd; | |
1096 | } | |
1097 | ||
b2587932 | 1098 | int socket_connect(SocketAddress *addr, Error **errp) |
101f9cbc | 1099 | { |
101f9cbc PB |
1100 | int fd; |
1101 | ||
2d32adda | 1102 | switch (addr->type) { |
bd269ebc | 1103 | case SOCKET_ADDRESS_TYPE_INET: |
b2587932 | 1104 | fd = inet_connect_saddr(&addr->u.inet, errp); |
101f9cbc PB |
1105 | break; |
1106 | ||
bd269ebc | 1107 | case SOCKET_ADDRESS_TYPE_UNIX: |
b2587932 | 1108 | fd = unix_connect_saddr(&addr->u.q_unix, errp); |
101f9cbc PB |
1109 | break; |
1110 | ||
bd269ebc | 1111 | case SOCKET_ADDRESS_TYPE_FD: |
e5b6353c | 1112 | fd = socket_get_fd(addr->u.fd.str, 1, errp); |
101f9cbc PB |
1113 | break; |
1114 | ||
bd269ebc | 1115 | case SOCKET_ADDRESS_TYPE_VSOCK: |
b2587932 | 1116 | fd = vsock_connect_saddr(&addr->u.vsock, errp); |
6a02c806 SH |
1117 | break; |
1118 | ||
101f9cbc PB |
1119 | default: |
1120 | abort(); | |
1121 | } | |
101f9cbc PB |
1122 | return fd; |
1123 | } | |
1124 | ||
e5b6353c | 1125 | int socket_listen(SocketAddress *addr, int num, Error **errp) |
101f9cbc | 1126 | { |
101f9cbc PB |
1127 | int fd; |
1128 | ||
e5b6353c | 1129 | trace_socket_listen(num); |
2d32adda | 1130 | switch (addr->type) { |
bd269ebc | 1131 | case SOCKET_ADDRESS_TYPE_INET: |
e5b6353c | 1132 | fd = inet_listen_saddr(&addr->u.inet, 0, num, errp); |
101f9cbc PB |
1133 | break; |
1134 | ||
bd269ebc | 1135 | case SOCKET_ADDRESS_TYPE_UNIX: |
e5b6353c | 1136 | fd = unix_listen_saddr(&addr->u.q_unix, num, errp); |
101f9cbc PB |
1137 | break; |
1138 | ||
bd269ebc | 1139 | case SOCKET_ADDRESS_TYPE_FD: |
e5b6353c | 1140 | fd = socket_get_fd(addr->u.fd.str, num, errp); |
101f9cbc PB |
1141 | break; |
1142 | ||
bd269ebc | 1143 | case SOCKET_ADDRESS_TYPE_VSOCK: |
e5b6353c | 1144 | fd = vsock_listen_saddr(&addr->u.vsock, num, errp); |
6a02c806 SH |
1145 | break; |
1146 | ||
101f9cbc PB |
1147 | default: |
1148 | abort(); | |
1149 | } | |
101f9cbc PB |
1150 | return fd; |
1151 | } | |
1152 | ||
74b6ce43 MAL |
1153 | void socket_listen_cleanup(int fd, Error **errp) |
1154 | { | |
bd269ebc | 1155 | SocketAddress *addr; |
74b6ce43 MAL |
1156 | |
1157 | addr = socket_local_address(fd, errp); | |
2d7ad7c0 DB |
1158 | if (!addr) { |
1159 | return; | |
1160 | } | |
74b6ce43 | 1161 | |
bd269ebc MA |
1162 | if (addr->type == SOCKET_ADDRESS_TYPE_UNIX |
1163 | && addr->u.q_unix.path) { | |
1164 | if (unlink(addr->u.q_unix.path) < 0 && errno != ENOENT) { | |
74b6ce43 MAL |
1165 | error_setg_errno(errp, errno, |
1166 | "Failed to unlink socket %s", | |
bd269ebc | 1167 | addr->u.q_unix.path); |
74b6ce43 MAL |
1168 | } |
1169 | } | |
1170 | ||
bd269ebc | 1171 | qapi_free_SocketAddress(addr); |
74b6ce43 MAL |
1172 | } |
1173 | ||
bd269ebc | 1174 | int socket_dgram(SocketAddress *remote, SocketAddress *local, Error **errp) |
3ecc059d | 1175 | { |
3ecc059d GH |
1176 | int fd; |
1177 | ||
ca0b64e5 | 1178 | /* |
bd269ebc | 1179 | * TODO SOCKET_ADDRESS_TYPE_FD when fd is AF_INET or AF_INET6 |
ca0b64e5 MA |
1180 | * (although other address families can do SOCK_DGRAM, too) |
1181 | */ | |
2d32adda | 1182 | switch (remote->type) { |
bd269ebc MA |
1183 | case SOCKET_ADDRESS_TYPE_INET: |
1184 | fd = inet_dgram_saddr(&remote->u.inet, | |
1185 | local ? &local->u.inet : NULL, errp); | |
3ecc059d GH |
1186 | break; |
1187 | ||
1188 | default: | |
1189 | error_setg(errp, "socket type unsupported for datagram"); | |
7a5b6af1 | 1190 | fd = -1; |
3ecc059d | 1191 | } |
3ecc059d GH |
1192 | return fd; |
1193 | } | |
17c55dec DB |
1194 | |
1195 | ||
bd269ebc | 1196 | static SocketAddress * |
17c55dec DB |
1197 | socket_sockaddr_to_address_inet(struct sockaddr_storage *sa, |
1198 | socklen_t salen, | |
1199 | Error **errp) | |
1200 | { | |
1201 | char host[NI_MAXHOST]; | |
1202 | char serv[NI_MAXSERV]; | |
bd269ebc | 1203 | SocketAddress *addr; |
0399293e | 1204 | InetSocketAddress *inet; |
17c55dec DB |
1205 | int ret; |
1206 | ||
1207 | ret = getnameinfo((struct sockaddr *)sa, salen, | |
1208 | host, sizeof(host), | |
1209 | serv, sizeof(serv), | |
1210 | NI_NUMERICHOST | NI_NUMERICSERV); | |
1211 | if (ret != 0) { | |
1212 | error_setg(errp, "Cannot format numeric socket address: %s", | |
1213 | gai_strerror(ret)); | |
1214 | return NULL; | |
1215 | } | |
1216 | ||
bd269ebc MA |
1217 | addr = g_new0(SocketAddress, 1); |
1218 | addr->type = SOCKET_ADDRESS_TYPE_INET; | |
1219 | inet = &addr->u.inet; | |
0399293e EB |
1220 | inet->host = g_strdup(host); |
1221 | inet->port = g_strdup(serv); | |
17c55dec | 1222 | if (sa->ss_family == AF_INET) { |
0399293e | 1223 | inet->has_ipv4 = inet->ipv4 = true; |
17c55dec | 1224 | } else { |
0399293e | 1225 | inet->has_ipv6 = inet->ipv6 = true; |
17c55dec DB |
1226 | } |
1227 | ||
1228 | return addr; | |
1229 | } | |
1230 | ||
1231 | ||
1232 | #ifndef WIN32 | |
bd269ebc | 1233 | static SocketAddress * |
17c55dec DB |
1234 | socket_sockaddr_to_address_unix(struct sockaddr_storage *sa, |
1235 | socklen_t salen, | |
1236 | Error **errp) | |
1237 | { | |
bd269ebc | 1238 | SocketAddress *addr; |
17c55dec DB |
1239 | struct sockaddr_un *su = (struct sockaddr_un *)sa; |
1240 | ||
bd269ebc MA |
1241 | addr = g_new0(SocketAddress, 1); |
1242 | addr->type = SOCKET_ADDRESS_TYPE_UNIX; | |
17c55dec | 1243 | if (su->sun_path[0]) { |
bd269ebc | 1244 | addr->u.q_unix.path = g_strndup(su->sun_path, sizeof(su->sun_path)); |
17c55dec DB |
1245 | } |
1246 | ||
1247 | return addr; | |
1248 | } | |
1249 | #endif /* WIN32 */ | |
1250 | ||
6a02c806 | 1251 | #ifdef CONFIG_AF_VSOCK |
bd269ebc | 1252 | static SocketAddress * |
6a02c806 SH |
1253 | socket_sockaddr_to_address_vsock(struct sockaddr_storage *sa, |
1254 | socklen_t salen, | |
1255 | Error **errp) | |
1256 | { | |
bd269ebc | 1257 | SocketAddress *addr; |
6a02c806 SH |
1258 | VsockSocketAddress *vaddr; |
1259 | struct sockaddr_vm *svm = (struct sockaddr_vm *)sa; | |
1260 | ||
bd269ebc MA |
1261 | addr = g_new0(SocketAddress, 1); |
1262 | addr->type = SOCKET_ADDRESS_TYPE_VSOCK; | |
1263 | vaddr = &addr->u.vsock; | |
6a02c806 SH |
1264 | vaddr->cid = g_strdup_printf("%u", svm->svm_cid); |
1265 | vaddr->port = g_strdup_printf("%u", svm->svm_port); | |
1266 | ||
1267 | return addr; | |
1268 | } | |
1269 | #endif /* CONFIG_AF_VSOCK */ | |
1270 | ||
bd269ebc | 1271 | SocketAddress * |
17c55dec DB |
1272 | socket_sockaddr_to_address(struct sockaddr_storage *sa, |
1273 | socklen_t salen, | |
1274 | Error **errp) | |
1275 | { | |
1276 | switch (sa->ss_family) { | |
1277 | case AF_INET: | |
1278 | case AF_INET6: | |
1279 | return socket_sockaddr_to_address_inet(sa, salen, errp); | |
1280 | ||
1281 | #ifndef WIN32 | |
1282 | case AF_UNIX: | |
1283 | return socket_sockaddr_to_address_unix(sa, salen, errp); | |
1284 | #endif /* WIN32 */ | |
1285 | ||
6a02c806 SH |
1286 | #ifdef CONFIG_AF_VSOCK |
1287 | case AF_VSOCK: | |
1288 | return socket_sockaddr_to_address_vsock(sa, salen, errp); | |
1289 | #endif | |
1290 | ||
17c55dec DB |
1291 | default: |
1292 | error_setg(errp, "socket family %d unsupported", | |
1293 | sa->ss_family); | |
1294 | return NULL; | |
1295 | } | |
1296 | return 0; | |
1297 | } | |
1298 | ||
1299 | ||
bd269ebc | 1300 | SocketAddress *socket_local_address(int fd, Error **errp) |
17c55dec DB |
1301 | { |
1302 | struct sockaddr_storage ss; | |
1303 | socklen_t sslen = sizeof(ss); | |
1304 | ||
1305 | if (getsockname(fd, (struct sockaddr *)&ss, &sslen) < 0) { | |
b16a44e1 | 1306 | error_setg_errno(errp, errno, "%s", |
17c55dec DB |
1307 | "Unable to query local socket address"); |
1308 | return NULL; | |
1309 | } | |
1310 | ||
1311 | return socket_sockaddr_to_address(&ss, sslen, errp); | |
1312 | } | |
1313 | ||
1314 | ||
bd269ebc | 1315 | SocketAddress *socket_remote_address(int fd, Error **errp) |
17c55dec DB |
1316 | { |
1317 | struct sockaddr_storage ss; | |
1318 | socklen_t sslen = sizeof(ss); | |
1319 | ||
1320 | if (getpeername(fd, (struct sockaddr *)&ss, &sslen) < 0) { | |
b16a44e1 | 1321 | error_setg_errno(errp, errno, "%s", |
17c55dec DB |
1322 | "Unable to query remote socket address"); |
1323 | return NULL; | |
1324 | } | |
1325 | ||
1326 | return socket_sockaddr_to_address(&ss, sslen, errp); | |
1327 | } | |
2a8e21c7 | 1328 | |
216411b8 | 1329 | |
bd269ebc MA |
1330 | SocketAddress *socket_address_flatten(SocketAddressLegacy *addr_legacy) |
1331 | { | |
fc0f0059 | 1332 | SocketAddress *addr; |
bd269ebc MA |
1333 | |
1334 | if (!addr_legacy) { | |
1335 | return NULL; | |
1336 | } | |
1337 | ||
fc0f0059 MA |
1338 | addr = g_new(SocketAddress, 1); |
1339 | ||
bd269ebc MA |
1340 | switch (addr_legacy->type) { |
1341 | case SOCKET_ADDRESS_LEGACY_KIND_INET: | |
1342 | addr->type = SOCKET_ADDRESS_TYPE_INET; | |
1343 | QAPI_CLONE_MEMBERS(InetSocketAddress, &addr->u.inet, | |
1344 | addr_legacy->u.inet.data); | |
1345 | break; | |
1346 | case SOCKET_ADDRESS_LEGACY_KIND_UNIX: | |
1347 | addr->type = SOCKET_ADDRESS_TYPE_UNIX; | |
1348 | QAPI_CLONE_MEMBERS(UnixSocketAddress, &addr->u.q_unix, | |
1349 | addr_legacy->u.q_unix.data); | |
1350 | break; | |
1351 | case SOCKET_ADDRESS_LEGACY_KIND_VSOCK: | |
1352 | addr->type = SOCKET_ADDRESS_TYPE_VSOCK; | |
1353 | QAPI_CLONE_MEMBERS(VsockSocketAddress, &addr->u.vsock, | |
1354 | addr_legacy->u.vsock.data); | |
1355 | break; | |
1356 | case SOCKET_ADDRESS_LEGACY_KIND_FD: | |
1357 | addr->type = SOCKET_ADDRESS_TYPE_FD; | |
1358 | QAPI_CLONE_MEMBERS(String, &addr->u.fd, addr_legacy->u.fd.data); | |
1359 | break; | |
1360 | default: | |
1361 | abort(); | |
1362 | } | |
1363 | ||
1364 | return addr; | |
1365 | } |