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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" |
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); | |
99 | return !qemu_getsockopt(fd, SOL_SOCKET, SO_TYPE, &optval, &optlen); | |
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) { | |
187 | qemu_setsockopt(socket, IPPROTO_IPV6, IPV6_V6ONLY, &v6only, | |
188 | sizeof(v6only)); | |
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, | |
1856835d | 210 | Error **errp) |
d247d25f AL |
211 | { |
212 | struct addrinfo ai,*res,*e; | |
d247d25f AL |
213 | char port[33]; |
214 | char uaddr[INET6_ADDRSTRLEN+1]; | |
215 | char uport[33]; | |
9cf961bb | 216 | int rc, port_min, port_max, p; |
10a7b7e6 | 217 | int slisten = -1; |
9cf961bb KO |
218 | int saved_errno = 0; |
219 | bool socket_created = false; | |
1856835d | 220 | Error *err = NULL; |
d247d25f | 221 | |
aec21d31 VSO |
222 | if (saddr->keep_alive) { |
223 | error_setg(errp, "keep-alive option is not supported for passive " | |
224 | "sockets"); | |
225 | return -1; | |
226 | } | |
227 | ||
d247d25f | 228 | memset(&ai,0, sizeof(ai)); |
3de3d698 | 229 | ai.ai_flags = AI_PASSIVE; |
6979a813 DB |
230 | if (saddr->has_numeric && saddr->numeric) { |
231 | ai.ai_flags |= AI_NUMERICHOST | AI_NUMERICSERV; | |
232 | } | |
1856835d | 233 | ai.ai_family = inet_ai_family_from_address(saddr, &err); |
e5bc776f | 234 | ai.ai_socktype = SOCK_STREAM; |
d247d25f | 235 | |
1856835d DB |
236 | if (err) { |
237 | error_propagate(errp, err); | |
238 | return -1; | |
239 | } | |
240 | ||
241 | if (saddr->host == NULL) { | |
0983f5e6 | 242 | error_setg(errp, "host not specified"); |
e5bc776f | 243 | return -1; |
d247d25f | 244 | } |
1856835d DB |
245 | if (saddr->port != NULL) { |
246 | pstrcpy(port, sizeof(port), saddr->port); | |
0983f5e6 DB |
247 | } else { |
248 | port[0] = '\0'; | |
249 | } | |
d247d25f AL |
250 | |
251 | /* lookup */ | |
8bc89127 GH |
252 | if (port_offset) { |
253 | unsigned long long baseport; | |
0983f5e6 DB |
254 | if (strlen(port) == 0) { |
255 | error_setg(errp, "port not specified"); | |
256 | return -1; | |
257 | } | |
8bc89127 GH |
258 | if (parse_uint_full(port, &baseport, 10) < 0) { |
259 | error_setg(errp, "can't convert to a number: %s", port); | |
260 | return -1; | |
261 | } | |
262 | if (baseport > 65535 || | |
263 | baseport + port_offset > 65535) { | |
264 | error_setg(errp, "port %s out of range", port); | |
265 | return -1; | |
266 | } | |
267 | snprintf(port, sizeof(port), "%d", (int)baseport + port_offset); | |
268 | } | |
1856835d | 269 | rc = getaddrinfo(strlen(saddr->host) ? saddr->host : NULL, |
0983f5e6 | 270 | strlen(port) ? port : NULL, &ai, &res); |
d247d25f | 271 | if (rc != 0) { |
1856835d DB |
272 | error_setg(errp, "address resolution failed for %s:%s: %s", |
273 | saddr->host, port, gai_strerror(rc)); | |
d247d25f AL |
274 | return -1; |
275 | } | |
d247d25f | 276 | |
9cf961bb | 277 | /* create socket + bind/listen */ |
d247d25f | 278 | for (e = res; e != NULL; e = e->ai_next) { |
39b6efc8 | 279 | getnameinfo((struct sockaddr*)e->ai_addr,e->ai_addrlen, |
7d37435b PB |
280 | uaddr,INET6_ADDRSTRLEN,uport,32, |
281 | NI_NUMERICHOST | NI_NUMERICSERV); | |
39f80521 | 282 | |
877691f9 | 283 | port_min = inet_getport(e); |
1856835d | 284 | port_max = saddr->has_to ? saddr->to + port_offset : port_min; |
877691f9 MA |
285 | for (p = port_min; p <= port_max; p++) { |
286 | inet_setport(e, p); | |
10a7b7e6 DB |
287 | |
288 | slisten = create_fast_reuse_socket(e); | |
289 | if (slisten < 0) { | |
290 | /* First time we expect we might fail to create the socket | |
291 | * eg if 'e' has AF_INET6 but ipv6 kmod is not loaded. | |
292 | * Later iterations should always succeed if first iteration | |
293 | * worked though, so treat that as fatal. | |
294 | */ | |
295 | if (p == port_min) { | |
9cf961bb KO |
296 | continue; |
297 | } else { | |
10a7b7e6 DB |
298 | error_setg_errno(errp, errno, |
299 | "Failed to recreate failed listening socket"); | |
9cf961bb | 300 | goto listen_failed; |
029409e5 | 301 | } |
d247d25f | 302 | } |
10a7b7e6 DB |
303 | socket_created = true; |
304 | ||
305 | rc = try_bind(slisten, saddr, e); | |
306 | if (rc < 0) { | |
307 | if (errno != EADDRINUSE) { | |
308 | error_setg_errno(errp, errno, "Failed to bind socket"); | |
309 | goto listen_failed; | |
310 | } | |
311 | } else { | |
312 | if (!listen(slisten, 1)) { | |
313 | goto listen_ok; | |
314 | } | |
315 | if (errno != EADDRINUSE) { | |
316 | error_setg_errno(errp, errno, "Failed to listen on socket"); | |
317 | goto listen_failed; | |
318 | } | |
9cf961bb KO |
319 | } |
320 | /* Someone else managed to bind to the same port and beat us | |
321 | * to listen on it! Socket semantics does not allow us to | |
322 | * recover from this situation, so we need to recreate the | |
323 | * socket to allow bind attempts for subsequent ports: | |
324 | */ | |
325 | closesocket(slisten); | |
10a7b7e6 | 326 | slisten = -1; |
d247d25f | 327 | } |
9cf961bb KO |
328 | } |
329 | error_setg_errno(errp, errno, | |
330 | socket_created ? | |
331 | "Failed to find an available port" : | |
332 | "Failed to create a socket"); | |
333 | listen_failed: | |
334 | saved_errno = errno; | |
335 | if (slisten >= 0) { | |
d247d25f AL |
336 | closesocket(slisten); |
337 | } | |
d247d25f | 338 | freeaddrinfo(res); |
9cf961bb | 339 | errno = saved_errno; |
d247d25f AL |
340 | return -1; |
341 | ||
9cf961bb | 342 | listen_ok: |
d247d25f AL |
343 | freeaddrinfo(res); |
344 | return slisten; | |
345 | } | |
346 | ||
05bc1d8a MT |
347 | #ifdef _WIN32 |
348 | #define QEMU_SOCKET_RC_INPROGRESS(rc) \ | |
349 | ((rc) == -EINPROGRESS || (rc) == -EWOULDBLOCK || (rc) == -WSAEALREADY) | |
350 | #else | |
351 | #define QEMU_SOCKET_RC_INPROGRESS(rc) \ | |
352 | ((rc) == -EINPROGRESS) | |
353 | #endif | |
354 | ||
b2587932 | 355 | static int inet_connect_addr(struct addrinfo *addr, Error **errp); |
233aa5c2 | 356 | |
b2587932 | 357 | static int inet_connect_addr(struct addrinfo *addr, Error **errp) |
233aa5c2 OW |
358 | { |
359 | int sock, rc; | |
360 | ||
05bc1d8a MT |
361 | sock = qemu_socket(addr->ai_family, addr->ai_socktype, addr->ai_protocol); |
362 | if (sock < 0) { | |
235256a2 | 363 | error_setg_errno(errp, errno, "Failed to create socket"); |
05bc1d8a MT |
364 | return -1; |
365 | } | |
04fd1c78 | 366 | socket_set_fast_reuse(sock); |
b2587932 | 367 | |
05bc1d8a MT |
368 | /* connect to peer */ |
369 | do { | |
370 | rc = 0; | |
371 | if (connect(sock, addr->ai_addr, addr->ai_addrlen) < 0) { | |
b16a44e1 | 372 | rc = -errno; |
05bc1d8a MT |
373 | } |
374 | } while (rc == -EINTR); | |
375 | ||
b2587932 | 376 | if (rc < 0) { |
235256a2 | 377 | error_setg_errno(errp, errno, "Failed to connect socket"); |
05bc1d8a MT |
378 | closesocket(sock); |
379 | return -1; | |
380 | } | |
b2587932 | 381 | |
05bc1d8a MT |
382 | return sock; |
383 | } | |
384 | ||
2942e420 DB |
385 | static struct addrinfo *inet_parse_connect_saddr(InetSocketAddress *saddr, |
386 | Error **errp) | |
05bc1d8a MT |
387 | { |
388 | struct addrinfo ai, *res; | |
389 | int rc; | |
2942e420 | 390 | Error *err = NULL; |
340849a9 | 391 | static int useV4Mapped = 1; |
d247d25f | 392 | |
05bc1d8a | 393 | memset(&ai, 0, sizeof(ai)); |
233aa5c2 | 394 | |
340849a9 DB |
395 | ai.ai_flags = AI_CANONNAME | AI_ADDRCONFIG; |
396 | if (atomic_read(&useV4Mapped)) { | |
397 | ai.ai_flags |= AI_V4MAPPED; | |
398 | } | |
2942e420 | 399 | ai.ai_family = inet_ai_family_from_address(saddr, &err); |
f4c94c7c | 400 | ai.ai_socktype = SOCK_STREAM; |
d247d25f | 401 | |
2942e420 DB |
402 | if (err) { |
403 | error_propagate(errp, err); | |
05bc1d8a | 404 | return NULL; |
d247d25f AL |
405 | } |
406 | ||
2942e420 DB |
407 | if (saddr->host == NULL || saddr->port == NULL) { |
408 | error_setg(errp, "host and/or port not specified"); | |
409 | return NULL; | |
05bc1d8a | 410 | } |
d247d25f AL |
411 | |
412 | /* lookup */ | |
2942e420 | 413 | rc = getaddrinfo(saddr->host, saddr->port, &ai, &res); |
340849a9 DB |
414 | |
415 | /* At least FreeBSD and OS-X 10.6 declare AI_V4MAPPED but | |
416 | * then don't implement it in their getaddrinfo(). Detect | |
417 | * this and retry without the flag since that's preferrable | |
418 | * to a fatal error | |
419 | */ | |
420 | if (rc == EAI_BADFLAGS && | |
421 | (ai.ai_flags & AI_V4MAPPED)) { | |
422 | atomic_set(&useV4Mapped, 0); | |
423 | ai.ai_flags &= ~AI_V4MAPPED; | |
424 | rc = getaddrinfo(saddr->host, saddr->port, &ai, &res); | |
425 | } | |
05bc1d8a | 426 | if (rc != 0) { |
2942e420 DB |
427 | error_setg(errp, "address resolution failed for %s:%s: %s", |
428 | saddr->host, saddr->port, gai_strerror(rc)); | |
05bc1d8a MT |
429 | return NULL; |
430 | } | |
431 | return res; | |
432 | } | |
433 | ||
5db5f44c OW |
434 | /** |
435 | * Create a socket and connect it to an address. | |
436 | * | |
2942e420 | 437 | * @saddr: Inet socket address specification |
5db5f44c OW |
438 | * @errp: set on error |
439 | * | |
440 | * Returns: -1 on error, file descriptor on success. | |
441 | */ | |
b2587932 | 442 | int inet_connect_saddr(InetSocketAddress *saddr, Error **errp) |
05bc1d8a | 443 | { |
3f9286b7 | 444 | Error *local_err = NULL; |
05bc1d8a MT |
445 | struct addrinfo *res, *e; |
446 | int sock = -1; | |
05bc1d8a | 447 | |
2942e420 | 448 | res = inet_parse_connect_saddr(saddr, errp); |
05bc1d8a MT |
449 | if (!res) { |
450 | return -1; | |
451 | } | |
452 | ||
d247d25f | 453 | for (e = res; e != NULL; e = e->ai_next) { |
3f9286b7 MA |
454 | error_free(local_err); |
455 | local_err = NULL; | |
b2587932 | 456 | sock = inet_connect_addr(e, &local_err); |
3f9286b7 | 457 | if (sock >= 0) { |
05bc1d8a | 458 | break; |
a6ba35b3 | 459 | } |
d247d25f | 460 | } |
3f9286b7 MA |
461 | |
462 | if (sock < 0) { | |
463 | error_propagate(errp, local_err); | |
3f9286b7 | 464 | } |
b2587932 | 465 | |
d247d25f | 466 | freeaddrinfo(res); |
aec21d31 VSO |
467 | |
468 | if (saddr->keep_alive) { | |
469 | int val = 1; | |
470 | int ret = qemu_setsockopt(sock, SOL_SOCKET, SO_KEEPALIVE, | |
471 | &val, sizeof(val)); | |
472 | ||
473 | if (ret < 0) { | |
474 | error_setg_errno(errp, errno, "Unable to set KEEPALIVE"); | |
475 | close(sock); | |
476 | return -1; | |
477 | } | |
478 | } | |
479 | ||
05bc1d8a | 480 | return sock; |
d247d25f AL |
481 | } |
482 | ||
8b39910e DB |
483 | static int inet_dgram_saddr(InetSocketAddress *sraddr, |
484 | InetSocketAddress *sladdr, | |
485 | Error **errp) | |
7e1b35b4 GH |
486 | { |
487 | struct addrinfo ai, *peer = NULL, *local = NULL; | |
488 | const char *addr; | |
489 | const char *port; | |
7e1b35b4 | 490 | int sock = -1, rc; |
8b39910e | 491 | Error *err = NULL; |
7e1b35b4 GH |
492 | |
493 | /* lookup peer addr */ | |
494 | memset(&ai,0, sizeof(ai)); | |
3de3d698 | 495 | ai.ai_flags = AI_CANONNAME | AI_V4MAPPED | AI_ADDRCONFIG; |
8b39910e | 496 | ai.ai_family = inet_ai_family_from_address(sraddr, &err); |
7e1b35b4 GH |
497 | ai.ai_socktype = SOCK_DGRAM; |
498 | ||
8b39910e DB |
499 | if (err) { |
500 | error_propagate(errp, err); | |
58c652c0 | 501 | goto err; |
8b39910e DB |
502 | } |
503 | ||
504 | addr = sraddr->host; | |
505 | port = sraddr->port; | |
7e1b35b4 GH |
506 | if (addr == NULL || strlen(addr) == 0) { |
507 | addr = "localhost"; | |
508 | } | |
509 | if (port == NULL || strlen(port) == 0) { | |
4f085c82 | 510 | error_setg(errp, "remote port not specified"); |
58c652c0 | 511 | goto err; |
7e1b35b4 GH |
512 | } |
513 | ||
9cd1883c | 514 | if ((rc = getaddrinfo(addr, port, &ai, &peer)) != 0) { |
4f085c82 PB |
515 | error_setg(errp, "address resolution failed for %s:%s: %s", addr, port, |
516 | gai_strerror(rc)); | |
26015051 | 517 | goto err; |
7e1b35b4 | 518 | } |
7e1b35b4 GH |
519 | |
520 | /* lookup local addr */ | |
521 | memset(&ai,0, sizeof(ai)); | |
522 | ai.ai_flags = AI_PASSIVE; | |
523 | ai.ai_family = peer->ai_family; | |
524 | ai.ai_socktype = SOCK_DGRAM; | |
525 | ||
8b39910e DB |
526 | if (sladdr) { |
527 | addr = sladdr->host; | |
528 | port = sladdr->port; | |
529 | if (addr == NULL || strlen(addr) == 0) { | |
530 | addr = NULL; | |
531 | } | |
532 | if (!port || strlen(port) == 0) { | |
533 | port = "0"; | |
534 | } | |
535 | } else { | |
7e1b35b4 | 536 | addr = NULL; |
7e1b35b4 | 537 | port = "0"; |
8b39910e | 538 | } |
7e1b35b4 | 539 | |
9cd1883c | 540 | if ((rc = getaddrinfo(addr, port, &ai, &local)) != 0) { |
4f085c82 PB |
541 | error_setg(errp, "address resolution failed for %s:%s: %s", addr, port, |
542 | gai_strerror(rc)); | |
39b38459 | 543 | goto err; |
7e1b35b4 | 544 | } |
7e1b35b4 GH |
545 | |
546 | /* create socket */ | |
40ff6d7e | 547 | sock = qemu_socket(peer->ai_family, peer->ai_socktype, peer->ai_protocol); |
7e1b35b4 | 548 | if (sock < 0) { |
235256a2 | 549 | error_setg_errno(errp, errno, "Failed to create socket"); |
7e1b35b4 GH |
550 | goto err; |
551 | } | |
04fd1c78 | 552 | socket_set_fast_reuse(sock); |
7e1b35b4 GH |
553 | |
554 | /* bind socket */ | |
7e1b35b4 | 555 | if (bind(sock, local->ai_addr, local->ai_addrlen) < 0) { |
235256a2 | 556 | error_setg_errno(errp, errno, "Failed to bind socket"); |
7e1b35b4 GH |
557 | goto err; |
558 | } | |
559 | ||
560 | /* connect to peer */ | |
7e1b35b4 | 561 | if (connect(sock,peer->ai_addr,peer->ai_addrlen) < 0) { |
235256a2 | 562 | error_setg_errno(errp, errno, "Failed to connect socket"); |
7e1b35b4 GH |
563 | goto err; |
564 | } | |
565 | ||
566 | freeaddrinfo(local); | |
567 | freeaddrinfo(peer); | |
568 | return sock; | |
569 | ||
570 | err: | |
26015051 | 571 | if (sock != -1) { |
7e1b35b4 | 572 | closesocket(sock); |
26015051 C |
573 | } |
574 | if (local) { | |
7e1b35b4 | 575 | freeaddrinfo(local); |
26015051 C |
576 | } |
577 | if (peer) { | |
7e1b35b4 | 578 | freeaddrinfo(peer); |
26015051 C |
579 | } |
580 | ||
7e1b35b4 GH |
581 | return -1; |
582 | } | |
583 | ||
f4c94c7c | 584 | /* compatibility wrapper */ |
3e32370a DB |
585 | static int inet_parse_flag(const char *flagname, const char *optstr, bool *val, |
586 | Error **errp) | |
587 | { | |
588 | char *end; | |
589 | size_t len; | |
590 | ||
591 | end = strstr(optstr, ","); | |
592 | if (end) { | |
593 | if (end[1] == ',') { /* Reject 'ipv6=on,,foo' */ | |
594 | error_setg(errp, "error parsing '%s' flag '%s'", flagname, optstr); | |
595 | return -1; | |
596 | } | |
597 | len = end - optstr; | |
598 | } else { | |
599 | len = strlen(optstr); | |
600 | } | |
601 | if (len == 0 || (len == 3 && strncmp(optstr, "=on", len) == 0)) { | |
602 | *val = true; | |
603 | } else if (len == 4 && strncmp(optstr, "=off", len) == 0) { | |
604 | *val = false; | |
605 | } else { | |
606 | error_setg(errp, "error parsing '%s' flag '%s'", flagname, optstr); | |
607 | return -1; | |
608 | } | |
609 | return 0; | |
610 | } | |
611 | ||
0785bd7a | 612 | int inet_parse(InetSocketAddress *addr, const char *str, Error **errp) |
f4c94c7c GH |
613 | { |
614 | const char *optstr, *h; | |
55a10996 | 615 | char host[65]; |
f4c94c7c | 616 | char port[33]; |
879e45c7 | 617 | int to; |
f4c94c7c | 618 | int pos; |
3e32370a | 619 | char *begin; |
f4c94c7c | 620 | |
0785bd7a | 621 | memset(addr, 0, sizeof(*addr)); |
879e45c7 | 622 | |
f4c94c7c GH |
623 | /* parse address */ |
624 | if (str[0] == ':') { | |
625 | /* no host given */ | |
879e45c7 | 626 | host[0] = '\0'; |
9cd1883c | 627 | if (sscanf(str, ":%32[^,]%n", port, &pos) != 1) { |
2f002c43 | 628 | error_setg(errp, "error parsing port in address '%s'", str); |
0785bd7a | 629 | return -1; |
f4c94c7c GH |
630 | } |
631 | } else if (str[0] == '[') { | |
632 | /* IPv6 addr */ | |
9cd1883c | 633 | if (sscanf(str, "[%64[^]]]:%32[^,]%n", host, port, &pos) != 2) { |
2f002c43 | 634 | error_setg(errp, "error parsing IPv6 address '%s'", str); |
0785bd7a | 635 | return -1; |
f4c94c7c | 636 | } |
f4c94c7c | 637 | } else { |
391b7b97 | 638 | /* hostname or IPv4 addr */ |
9cd1883c | 639 | if (sscanf(str, "%64[^:]:%32[^,]%n", host, port, &pos) != 2) { |
2f002c43 | 640 | error_setg(errp, "error parsing address '%s'", str); |
0785bd7a | 641 | return -1; |
f4c94c7c GH |
642 | } |
643 | } | |
879e45c7 PB |
644 | |
645 | addr->host = g_strdup(host); | |
646 | addr->port = g_strdup(port); | |
f4c94c7c GH |
647 | |
648 | /* parse options */ | |
649 | optstr = str + pos; | |
650 | h = strstr(optstr, ",to="); | |
879e45c7 | 651 | if (h) { |
1ccbc285 AP |
652 | h += 4; |
653 | if (sscanf(h, "%d%n", &to, &pos) != 1 || | |
654 | (h[pos] != '\0' && h[pos] != ',')) { | |
879e45c7 | 655 | error_setg(errp, "error parsing to= argument"); |
0785bd7a | 656 | return -1; |
879e45c7 PB |
657 | } |
658 | addr->has_to = true; | |
659 | addr->to = to; | |
660 | } | |
3e32370a DB |
661 | begin = strstr(optstr, ",ipv4"); |
662 | if (begin) { | |
663 | if (inet_parse_flag("ipv4", begin + 5, &addr->ipv4, errp) < 0) { | |
664 | return -1; | |
665 | } | |
666 | addr->has_ipv4 = true; | |
879e45c7 | 667 | } |
3e32370a DB |
668 | begin = strstr(optstr, ",ipv6"); |
669 | if (begin) { | |
670 | if (inet_parse_flag("ipv6", begin + 5, &addr->ipv6, errp) < 0) { | |
671 | return -1; | |
672 | } | |
673 | addr->has_ipv6 = true; | |
879e45c7 | 674 | } |
aec21d31 VSO |
675 | begin = strstr(optstr, ",keep-alive"); |
676 | if (begin) { | |
677 | if (inet_parse_flag("keep-alive", begin + strlen(",keep-alive"), | |
678 | &addr->keep_alive, errp) < 0) | |
679 | { | |
680 | return -1; | |
681 | } | |
682 | addr->has_keep_alive = true; | |
683 | } | |
0785bd7a | 684 | return 0; |
879e45c7 PB |
685 | } |
686 | ||
e5bc776f | 687 | |
5db5f44c OW |
688 | /** |
689 | * Create a blocking socket and connect it to an address. | |
690 | * | |
691 | * @str: address string | |
692 | * @errp: set in case of an error | |
693 | * | |
694 | * Returns -1 in case of error, file descriptor on success | |
695 | **/ | |
696 | int inet_connect(const char *str, Error **errp) | |
f4c94c7c | 697 | { |
f4c94c7c | 698 | int sock = -1; |
0785bd7a | 699 | InetSocketAddress *addr = g_new(InetSocketAddress, 1); |
f4c94c7c | 700 | |
0785bd7a | 701 | if (!inet_parse(addr, str, errp)) { |
b2587932 | 702 | sock = inet_connect_saddr(addr, errp); |
5db5f44c | 703 | } |
0785bd7a | 704 | qapi_free_InetSocketAddress(addr); |
5db5f44c OW |
705 | return sock; |
706 | } | |
707 | ||
6a02c806 SH |
708 | #ifdef CONFIG_AF_VSOCK |
709 | static bool vsock_parse_vaddr_to_sockaddr(const VsockSocketAddress *vaddr, | |
710 | struct sockaddr_vm *svm, | |
711 | Error **errp) | |
712 | { | |
713 | unsigned long long val; | |
714 | ||
715 | memset(svm, 0, sizeof(*svm)); | |
716 | svm->svm_family = AF_VSOCK; | |
717 | ||
718 | if (parse_uint_full(vaddr->cid, &val, 10) < 0 || | |
719 | val > UINT32_MAX) { | |
720 | error_setg(errp, "Failed to parse cid '%s'", vaddr->cid); | |
721 | return false; | |
722 | } | |
723 | svm->svm_cid = val; | |
724 | ||
725 | if (parse_uint_full(vaddr->port, &val, 10) < 0 || | |
726 | val > UINT32_MAX) { | |
727 | error_setg(errp, "Failed to parse port '%s'", vaddr->port); | |
728 | return false; | |
729 | } | |
730 | svm->svm_port = val; | |
731 | ||
732 | return true; | |
733 | } | |
734 | ||
b2587932 | 735 | static int vsock_connect_addr(const struct sockaddr_vm *svm, Error **errp) |
6a02c806 SH |
736 | { |
737 | int sock, rc; | |
738 | ||
6a02c806 SH |
739 | sock = qemu_socket(AF_VSOCK, SOCK_STREAM, 0); |
740 | if (sock < 0) { | |
741 | error_setg_errno(errp, errno, "Failed to create socket"); | |
742 | return -1; | |
743 | } | |
b2587932 | 744 | |
6a02c806 SH |
745 | /* connect to peer */ |
746 | do { | |
747 | rc = 0; | |
748 | if (connect(sock, (const struct sockaddr *)svm, sizeof(*svm)) < 0) { | |
749 | rc = -errno; | |
750 | } | |
751 | } while (rc == -EINTR); | |
752 | ||
b2587932 | 753 | if (rc < 0) { |
6a02c806 SH |
754 | error_setg_errno(errp, errno, "Failed to connect socket"); |
755 | closesocket(sock); | |
756 | return -1; | |
757 | } | |
b2587932 | 758 | |
6a02c806 SH |
759 | return sock; |
760 | } | |
761 | ||
b2587932 | 762 | static int vsock_connect_saddr(VsockSocketAddress *vaddr, Error **errp) |
6a02c806 SH |
763 | { |
764 | struct sockaddr_vm svm; | |
765 | int sock = -1; | |
6a02c806 SH |
766 | |
767 | if (!vsock_parse_vaddr_to_sockaddr(vaddr, &svm, errp)) { | |
768 | return -1; | |
769 | } | |
770 | ||
b2587932 | 771 | sock = vsock_connect_addr(&svm, errp); |
6a02c806 | 772 | |
6a02c806 SH |
773 | return sock; |
774 | } | |
775 | ||
776 | static int vsock_listen_saddr(VsockSocketAddress *vaddr, | |
777 | Error **errp) | |
778 | { | |
779 | struct sockaddr_vm svm; | |
780 | int slisten; | |
781 | ||
782 | if (!vsock_parse_vaddr_to_sockaddr(vaddr, &svm, errp)) { | |
783 | return -1; | |
784 | } | |
785 | ||
786 | slisten = qemu_socket(AF_VSOCK, SOCK_STREAM, 0); | |
787 | if (slisten < 0) { | |
788 | error_setg_errno(errp, errno, "Failed to create socket"); | |
789 | return -1; | |
790 | } | |
791 | ||
792 | if (bind(slisten, (const struct sockaddr *)&svm, sizeof(svm)) != 0) { | |
793 | error_setg_errno(errp, errno, "Failed to bind socket"); | |
794 | closesocket(slisten); | |
795 | return -1; | |
796 | } | |
797 | ||
798 | if (listen(slisten, 1) != 0) { | |
799 | error_setg_errno(errp, errno, "Failed to listen on socket"); | |
800 | closesocket(slisten); | |
801 | return -1; | |
802 | } | |
803 | return slisten; | |
804 | } | |
805 | ||
4db5c619 MA |
806 | static int vsock_parse(VsockSocketAddress *addr, const char *str, |
807 | Error **errp) | |
6a02c806 | 808 | { |
6a02c806 SH |
809 | char cid[33]; |
810 | char port[33]; | |
811 | int n; | |
812 | ||
813 | if (sscanf(str, "%32[^:]:%32[^,]%n", cid, port, &n) != 2) { | |
814 | error_setg(errp, "error parsing address '%s'", str); | |
4db5c619 | 815 | return -1; |
6a02c806 SH |
816 | } |
817 | if (str[n] != '\0') { | |
818 | error_setg(errp, "trailing characters in address '%s'", str); | |
4db5c619 | 819 | return -1; |
6a02c806 SH |
820 | } |
821 | ||
6a02c806 SH |
822 | addr->cid = g_strdup(cid); |
823 | addr->port = g_strdup(port); | |
4db5c619 | 824 | return 0; |
6a02c806 SH |
825 | } |
826 | #else | |
827 | static void vsock_unsupported(Error **errp) | |
828 | { | |
829 | error_setg(errp, "socket family AF_VSOCK unsupported"); | |
830 | } | |
831 | ||
b2587932 | 832 | static int vsock_connect_saddr(VsockSocketAddress *vaddr, Error **errp) |
6a02c806 SH |
833 | { |
834 | vsock_unsupported(errp); | |
835 | return -1; | |
836 | } | |
837 | ||
838 | static int vsock_listen_saddr(VsockSocketAddress *vaddr, | |
839 | Error **errp) | |
840 | { | |
841 | vsock_unsupported(errp); | |
842 | return -1; | |
843 | } | |
844 | ||
4db5c619 MA |
845 | static int vsock_parse(VsockSocketAddress *addr, const char *str, |
846 | Error **errp) | |
6a02c806 SH |
847 | { |
848 | vsock_unsupported(errp); | |
4db5c619 | 849 | return -1; |
6a02c806 SH |
850 | } |
851 | #endif /* CONFIG_AF_VSOCK */ | |
852 | ||
d247d25f AL |
853 | #ifndef _WIN32 |
854 | ||
1856835d | 855 | static int unix_listen_saddr(UnixSocketAddress *saddr, |
1856835d | 856 | Error **errp) |
d247d25f AL |
857 | { |
858 | struct sockaddr_un un; | |
62b6adfb | 859 | int sock, fd; |
ad9579aa DB |
860 | char *pathbuf = NULL; |
861 | const char *path; | |
2d2023c3 | 862 | size_t pathlen; |
d247d25f | 863 | |
40ff6d7e | 864 | sock = qemu_socket(PF_UNIX, SOCK_STREAM, 0); |
d247d25f | 865 | if (sock < 0) { |
b658c53d | 866 | error_setg_errno(errp, errno, "Failed to create Unix socket"); |
39b6efc8 | 867 | return -1; |
d247d25f AL |
868 | } |
869 | ||
ad9579aa DB |
870 | if (saddr->path && saddr->path[0]) { |
871 | path = saddr->path; | |
d247d25f | 872 | } else { |
b658c53d PB |
873 | const char *tmpdir = getenv("TMPDIR"); |
874 | tmpdir = tmpdir ? tmpdir : "/tmp"; | |
ad9579aa DB |
875 | path = pathbuf = g_strdup_printf("%s/qemu-socket-XXXXXX", tmpdir); |
876 | } | |
b658c53d | 877 | |
2d2023c3 DB |
878 | pathlen = strlen(path); |
879 | if (pathlen > sizeof(un.sun_path)) { | |
ad9579aa DB |
880 | error_setg(errp, "UNIX socket path '%s' is too long", path); |
881 | error_append_hint(errp, "Path must be less than %zu bytes\n", | |
882 | sizeof(un.sun_path)); | |
883 | goto err; | |
884 | } | |
885 | ||
886 | if (pathbuf != NULL) { | |
d247d25f AL |
887 | /* |
888 | * This dummy fd usage silences the mktemp() unsecure warning. | |
889 | * Using mkstemp() doesn't make things more secure here | |
890 | * though. bind() complains about existing files, so we have | |
891 | * to unlink first and thus re-open the race window. The | |
892 | * worst case possible is bind() failing, i.e. a DoS attack. | |
893 | */ | |
ad9579aa | 894 | fd = mkstemp(pathbuf); |
b658c53d PB |
895 | if (fd < 0) { |
896 | error_setg_errno(errp, errno, | |
ad9579aa | 897 | "Failed to make a temporary socket %s", pathbuf); |
b658c53d PB |
898 | goto err; |
899 | } | |
900 | close(fd); | |
d247d25f | 901 | } |
d247d25f | 902 | |
ad9579aa | 903 | if (unlink(path) < 0 && errno != ENOENT) { |
0ef705a2 | 904 | error_setg_errno(errp, errno, |
ad9579aa | 905 | "Failed to unlink socket %s", path); |
0ef705a2 CR |
906 | goto err; |
907 | } | |
ad9579aa DB |
908 | |
909 | memset(&un, 0, sizeof(un)); | |
910 | un.sun_family = AF_UNIX; | |
2d2023c3 | 911 | memcpy(un.sun_path, path, pathlen); |
ad9579aa | 912 | |
d247d25f | 913 | if (bind(sock, (struct sockaddr*) &un, sizeof(un)) < 0) { |
56382bd5 | 914 | error_setg_errno(errp, errno, "Failed to bind socket to %s", path); |
d247d25f AL |
915 | goto err; |
916 | } | |
917 | if (listen(sock, 1) < 0) { | |
235256a2 | 918 | error_setg_errno(errp, errno, "Failed to listen on socket"); |
d247d25f AL |
919 | goto err; |
920 | } | |
921 | ||
62473511 | 922 | g_free(pathbuf); |
d247d25f AL |
923 | return sock; |
924 | ||
925 | err: | |
ad9579aa | 926 | g_free(pathbuf); |
d247d25f AL |
927 | closesocket(sock); |
928 | return -1; | |
929 | } | |
930 | ||
b2587932 | 931 | static int unix_connect_saddr(UnixSocketAddress *saddr, Error **errp) |
d247d25f AL |
932 | { |
933 | struct sockaddr_un un; | |
1fc05adf | 934 | int sock, rc; |
2d2023c3 | 935 | size_t pathlen; |
d247d25f | 936 | |
2942e420 | 937 | if (saddr->path == NULL) { |
312fd5f2 | 938 | error_setg(errp, "unix connect: no path specified"); |
2af2bf67 GH |
939 | return -1; |
940 | } | |
941 | ||
40ff6d7e | 942 | sock = qemu_socket(PF_UNIX, SOCK_STREAM, 0); |
d247d25f | 943 | if (sock < 0) { |
235256a2 | 944 | error_setg_errno(errp, errno, "Failed to create socket"); |
39b6efc8 | 945 | return -1; |
d247d25f AL |
946 | } |
947 | ||
2d2023c3 DB |
948 | pathlen = strlen(saddr->path); |
949 | if (pathlen > sizeof(un.sun_path)) { | |
ad9579aa DB |
950 | error_setg(errp, "UNIX socket path '%s' is too long", saddr->path); |
951 | error_append_hint(errp, "Path must be less than %zu bytes\n", | |
952 | sizeof(un.sun_path)); | |
953 | goto err; | |
954 | } | |
955 | ||
d247d25f AL |
956 | memset(&un, 0, sizeof(un)); |
957 | un.sun_family = AF_UNIX; | |
2d2023c3 | 958 | memcpy(un.sun_path, saddr->path, pathlen); |
1fc05adf PB |
959 | |
960 | /* connect to peer */ | |
961 | do { | |
962 | rc = 0; | |
963 | if (connect(sock, (struct sockaddr *) &un, sizeof(un)) < 0) { | |
b16a44e1 | 964 | rc = -errno; |
1fc05adf PB |
965 | } |
966 | } while (rc == -EINTR); | |
967 | ||
1fc05adf | 968 | if (rc < 0) { |
ad9579aa DB |
969 | error_setg_errno(errp, -rc, "Failed to connect socket %s", |
970 | saddr->path); | |
971 | goto err; | |
d247d25f AL |
972 | } |
973 | ||
d247d25f | 974 | return sock; |
ad9579aa DB |
975 | |
976 | err: | |
977 | close(sock); | |
ad9579aa | 978 | return -1; |
d247d25f AL |
979 | } |
980 | ||
0c814709 PB |
981 | #else |
982 | ||
1856835d | 983 | static int unix_listen_saddr(UnixSocketAddress *saddr, |
1856835d | 984 | Error **errp) |
0c814709 | 985 | { |
58899664 | 986 | error_setg(errp, "unix sockets are not available on windows"); |
0c814709 PB |
987 | errno = ENOTSUP; |
988 | return -1; | |
989 | } | |
990 | ||
b2587932 | 991 | static int unix_connect_saddr(UnixSocketAddress *saddr, Error **errp) |
0c814709 | 992 | { |
58899664 | 993 | error_setg(errp, "unix sockets are not available on windows"); |
0c814709 PB |
994 | errno = ENOTSUP; |
995 | return -1; | |
996 | } | |
997 | #endif | |
998 | ||
2af2bf67 | 999 | /* compatibility wrapper */ |
62473511 | 1000 | int unix_listen(const char *str, Error **errp) |
62b6adfb | 1001 | { |
1856835d | 1002 | UnixSocketAddress *saddr; |
caf88d74 | 1003 | int sock; |
62b6adfb | 1004 | |
1856835d | 1005 | saddr = g_new0(UnixSocketAddress, 1); |
caf88d74 | 1006 | saddr->path = g_strdup(str); |
62473511 | 1007 | sock = unix_listen_saddr(saddr, errp); |
1856835d | 1008 | qapi_free_UnixSocketAddress(saddr); |
62b6adfb GH |
1009 | return sock; |
1010 | } | |
1011 | ||
7fc4e63e | 1012 | int unix_connect(const char *path, Error **errp) |
2af2bf67 | 1013 | { |
2942e420 | 1014 | UnixSocketAddress *saddr; |
2af2bf67 GH |
1015 | int sock; |
1016 | ||
2942e420 DB |
1017 | saddr = g_new0(UnixSocketAddress, 1); |
1018 | saddr->path = g_strdup(path); | |
b2587932 | 1019 | sock = unix_connect_saddr(saddr, errp); |
2942e420 | 1020 | qapi_free_UnixSocketAddress(saddr); |
1fc05adf PB |
1021 | return sock; |
1022 | } | |
1023 | ||
1024 | ||
bd269ebc | 1025 | SocketAddress *socket_parse(const char *str, Error **errp) |
101f9cbc | 1026 | { |
bd269ebc | 1027 | SocketAddress *addr; |
101f9cbc | 1028 | |
bd269ebc | 1029 | addr = g_new0(SocketAddress, 1); |
101f9cbc PB |
1030 | if (strstart(str, "unix:", NULL)) { |
1031 | if (str[5] == '\0') { | |
312fd5f2 | 1032 | error_setg(errp, "invalid Unix socket address"); |
101f9cbc PB |
1033 | goto fail; |
1034 | } else { | |
bd269ebc MA |
1035 | addr->type = SOCKET_ADDRESS_TYPE_UNIX; |
1036 | addr->u.q_unix.path = g_strdup(str + 5); | |
101f9cbc PB |
1037 | } |
1038 | } else if (strstart(str, "fd:", NULL)) { | |
1039 | if (str[3] == '\0') { | |
312fd5f2 | 1040 | error_setg(errp, "invalid file descriptor address"); |
101f9cbc PB |
1041 | goto fail; |
1042 | } else { | |
bd269ebc MA |
1043 | addr->type = SOCKET_ADDRESS_TYPE_FD; |
1044 | addr->u.fd.str = g_strdup(str + 3); | |
101f9cbc | 1045 | } |
6a02c806 | 1046 | } else if (strstart(str, "vsock:", NULL)) { |
bd269ebc MA |
1047 | addr->type = SOCKET_ADDRESS_TYPE_VSOCK; |
1048 | if (vsock_parse(&addr->u.vsock, str + strlen("vsock:"), errp)) { | |
6a02c806 SH |
1049 | goto fail; |
1050 | } | |
101f9cbc | 1051 | } else { |
bd269ebc MA |
1052 | addr->type = SOCKET_ADDRESS_TYPE_INET; |
1053 | if (inet_parse(&addr->u.inet, str, errp)) { | |
101f9cbc PB |
1054 | goto fail; |
1055 | } | |
1056 | } | |
1057 | return addr; | |
1058 | ||
1059 | fail: | |
bd269ebc | 1060 | qapi_free_SocketAddress(addr); |
101f9cbc PB |
1061 | return NULL; |
1062 | } | |
1063 | ||
30bdb3c5 DB |
1064 | static int socket_get_fd(const char *fdstr, Error **errp) |
1065 | { | |
1723d6b1 DB |
1066 | int fd; |
1067 | if (cur_mon) { | |
1068 | fd = monitor_get_fd(cur_mon, fdstr, errp); | |
1069 | if (fd < 0) { | |
1070 | return -1; | |
1071 | } | |
1072 | } else { | |
1073 | if (qemu_strtoi(fdstr, NULL, 10, &fd) < 0) { | |
1074 | error_setg_errno(errp, errno, | |
1075 | "Unable to parse FD number %s", | |
1076 | fdstr); | |
1077 | return -1; | |
1078 | } | |
30bdb3c5 DB |
1079 | } |
1080 | if (!fd_is_socket(fd)) { | |
1081 | error_setg(errp, "File descriptor '%s' is not a socket", fdstr); | |
1082 | close(fd); | |
1083 | return -1; | |
1084 | } | |
1085 | return fd; | |
1086 | } | |
1087 | ||
b2587932 | 1088 | int socket_connect(SocketAddress *addr, Error **errp) |
101f9cbc | 1089 | { |
101f9cbc PB |
1090 | int fd; |
1091 | ||
2d32adda | 1092 | switch (addr->type) { |
bd269ebc | 1093 | case SOCKET_ADDRESS_TYPE_INET: |
b2587932 | 1094 | fd = inet_connect_saddr(&addr->u.inet, errp); |
101f9cbc PB |
1095 | break; |
1096 | ||
bd269ebc | 1097 | case SOCKET_ADDRESS_TYPE_UNIX: |
b2587932 | 1098 | fd = unix_connect_saddr(&addr->u.q_unix, errp); |
101f9cbc PB |
1099 | break; |
1100 | ||
bd269ebc | 1101 | case SOCKET_ADDRESS_TYPE_FD: |
30bdb3c5 | 1102 | fd = socket_get_fd(addr->u.fd.str, errp); |
101f9cbc PB |
1103 | break; |
1104 | ||
bd269ebc | 1105 | case SOCKET_ADDRESS_TYPE_VSOCK: |
b2587932 | 1106 | fd = vsock_connect_saddr(&addr->u.vsock, errp); |
6a02c806 SH |
1107 | break; |
1108 | ||
101f9cbc PB |
1109 | default: |
1110 | abort(); | |
1111 | } | |
101f9cbc PB |
1112 | return fd; |
1113 | } | |
1114 | ||
bd269ebc | 1115 | int socket_listen(SocketAddress *addr, Error **errp) |
101f9cbc | 1116 | { |
101f9cbc PB |
1117 | int fd; |
1118 | ||
2d32adda | 1119 | switch (addr->type) { |
bd269ebc | 1120 | case SOCKET_ADDRESS_TYPE_INET: |
62473511 | 1121 | fd = inet_listen_saddr(&addr->u.inet, 0, errp); |
101f9cbc PB |
1122 | break; |
1123 | ||
bd269ebc | 1124 | case SOCKET_ADDRESS_TYPE_UNIX: |
62473511 | 1125 | fd = unix_listen_saddr(&addr->u.q_unix, errp); |
101f9cbc PB |
1126 | break; |
1127 | ||
bd269ebc | 1128 | case SOCKET_ADDRESS_TYPE_FD: |
30bdb3c5 | 1129 | fd = socket_get_fd(addr->u.fd.str, errp); |
101f9cbc PB |
1130 | break; |
1131 | ||
bd269ebc MA |
1132 | case SOCKET_ADDRESS_TYPE_VSOCK: |
1133 | fd = vsock_listen_saddr(&addr->u.vsock, errp); | |
6a02c806 SH |
1134 | break; |
1135 | ||
101f9cbc PB |
1136 | default: |
1137 | abort(); | |
1138 | } | |
101f9cbc PB |
1139 | return fd; |
1140 | } | |
1141 | ||
74b6ce43 MAL |
1142 | void socket_listen_cleanup(int fd, Error **errp) |
1143 | { | |
bd269ebc | 1144 | SocketAddress *addr; |
74b6ce43 MAL |
1145 | |
1146 | addr = socket_local_address(fd, errp); | |
2d7ad7c0 DB |
1147 | if (!addr) { |
1148 | return; | |
1149 | } | |
74b6ce43 | 1150 | |
bd269ebc MA |
1151 | if (addr->type == SOCKET_ADDRESS_TYPE_UNIX |
1152 | && addr->u.q_unix.path) { | |
1153 | if (unlink(addr->u.q_unix.path) < 0 && errno != ENOENT) { | |
74b6ce43 MAL |
1154 | error_setg_errno(errp, errno, |
1155 | "Failed to unlink socket %s", | |
bd269ebc | 1156 | addr->u.q_unix.path); |
74b6ce43 MAL |
1157 | } |
1158 | } | |
1159 | ||
bd269ebc | 1160 | qapi_free_SocketAddress(addr); |
74b6ce43 MAL |
1161 | } |
1162 | ||
bd269ebc | 1163 | int socket_dgram(SocketAddress *remote, SocketAddress *local, Error **errp) |
3ecc059d | 1164 | { |
3ecc059d GH |
1165 | int fd; |
1166 | ||
ca0b64e5 | 1167 | /* |
bd269ebc | 1168 | * TODO SOCKET_ADDRESS_TYPE_FD when fd is AF_INET or AF_INET6 |
ca0b64e5 MA |
1169 | * (although other address families can do SOCK_DGRAM, too) |
1170 | */ | |
2d32adda | 1171 | switch (remote->type) { |
bd269ebc MA |
1172 | case SOCKET_ADDRESS_TYPE_INET: |
1173 | fd = inet_dgram_saddr(&remote->u.inet, | |
1174 | local ? &local->u.inet : NULL, errp); | |
3ecc059d GH |
1175 | break; |
1176 | ||
1177 | default: | |
1178 | error_setg(errp, "socket type unsupported for datagram"); | |
7a5b6af1 | 1179 | fd = -1; |
3ecc059d | 1180 | } |
3ecc059d GH |
1181 | return fd; |
1182 | } | |
17c55dec DB |
1183 | |
1184 | ||
bd269ebc | 1185 | static SocketAddress * |
17c55dec DB |
1186 | socket_sockaddr_to_address_inet(struct sockaddr_storage *sa, |
1187 | socklen_t salen, | |
1188 | Error **errp) | |
1189 | { | |
1190 | char host[NI_MAXHOST]; | |
1191 | char serv[NI_MAXSERV]; | |
bd269ebc | 1192 | SocketAddress *addr; |
0399293e | 1193 | InetSocketAddress *inet; |
17c55dec DB |
1194 | int ret; |
1195 | ||
1196 | ret = getnameinfo((struct sockaddr *)sa, salen, | |
1197 | host, sizeof(host), | |
1198 | serv, sizeof(serv), | |
1199 | NI_NUMERICHOST | NI_NUMERICSERV); | |
1200 | if (ret != 0) { | |
1201 | error_setg(errp, "Cannot format numeric socket address: %s", | |
1202 | gai_strerror(ret)); | |
1203 | return NULL; | |
1204 | } | |
1205 | ||
bd269ebc MA |
1206 | addr = g_new0(SocketAddress, 1); |
1207 | addr->type = SOCKET_ADDRESS_TYPE_INET; | |
1208 | inet = &addr->u.inet; | |
0399293e EB |
1209 | inet->host = g_strdup(host); |
1210 | inet->port = g_strdup(serv); | |
17c55dec | 1211 | if (sa->ss_family == AF_INET) { |
0399293e | 1212 | inet->has_ipv4 = inet->ipv4 = true; |
17c55dec | 1213 | } else { |
0399293e | 1214 | inet->has_ipv6 = inet->ipv6 = true; |
17c55dec DB |
1215 | } |
1216 | ||
1217 | return addr; | |
1218 | } | |
1219 | ||
1220 | ||
1221 | #ifndef WIN32 | |
bd269ebc | 1222 | static SocketAddress * |
17c55dec DB |
1223 | socket_sockaddr_to_address_unix(struct sockaddr_storage *sa, |
1224 | socklen_t salen, | |
1225 | Error **errp) | |
1226 | { | |
bd269ebc | 1227 | SocketAddress *addr; |
17c55dec DB |
1228 | struct sockaddr_un *su = (struct sockaddr_un *)sa; |
1229 | ||
bd269ebc MA |
1230 | addr = g_new0(SocketAddress, 1); |
1231 | addr->type = SOCKET_ADDRESS_TYPE_UNIX; | |
17c55dec | 1232 | if (su->sun_path[0]) { |
bd269ebc | 1233 | addr->u.q_unix.path = g_strndup(su->sun_path, sizeof(su->sun_path)); |
17c55dec DB |
1234 | } |
1235 | ||
1236 | return addr; | |
1237 | } | |
1238 | #endif /* WIN32 */ | |
1239 | ||
6a02c806 | 1240 | #ifdef CONFIG_AF_VSOCK |
bd269ebc | 1241 | static SocketAddress * |
6a02c806 SH |
1242 | socket_sockaddr_to_address_vsock(struct sockaddr_storage *sa, |
1243 | socklen_t salen, | |
1244 | Error **errp) | |
1245 | { | |
bd269ebc | 1246 | SocketAddress *addr; |
6a02c806 SH |
1247 | VsockSocketAddress *vaddr; |
1248 | struct sockaddr_vm *svm = (struct sockaddr_vm *)sa; | |
1249 | ||
bd269ebc MA |
1250 | addr = g_new0(SocketAddress, 1); |
1251 | addr->type = SOCKET_ADDRESS_TYPE_VSOCK; | |
1252 | vaddr = &addr->u.vsock; | |
6a02c806 SH |
1253 | vaddr->cid = g_strdup_printf("%u", svm->svm_cid); |
1254 | vaddr->port = g_strdup_printf("%u", svm->svm_port); | |
1255 | ||
1256 | return addr; | |
1257 | } | |
1258 | #endif /* CONFIG_AF_VSOCK */ | |
1259 | ||
bd269ebc | 1260 | SocketAddress * |
17c55dec DB |
1261 | socket_sockaddr_to_address(struct sockaddr_storage *sa, |
1262 | socklen_t salen, | |
1263 | Error **errp) | |
1264 | { | |
1265 | switch (sa->ss_family) { | |
1266 | case AF_INET: | |
1267 | case AF_INET6: | |
1268 | return socket_sockaddr_to_address_inet(sa, salen, errp); | |
1269 | ||
1270 | #ifndef WIN32 | |
1271 | case AF_UNIX: | |
1272 | return socket_sockaddr_to_address_unix(sa, salen, errp); | |
1273 | #endif /* WIN32 */ | |
1274 | ||
6a02c806 SH |
1275 | #ifdef CONFIG_AF_VSOCK |
1276 | case AF_VSOCK: | |
1277 | return socket_sockaddr_to_address_vsock(sa, salen, errp); | |
1278 | #endif | |
1279 | ||
17c55dec DB |
1280 | default: |
1281 | error_setg(errp, "socket family %d unsupported", | |
1282 | sa->ss_family); | |
1283 | return NULL; | |
1284 | } | |
1285 | return 0; | |
1286 | } | |
1287 | ||
1288 | ||
bd269ebc | 1289 | SocketAddress *socket_local_address(int fd, Error **errp) |
17c55dec DB |
1290 | { |
1291 | struct sockaddr_storage ss; | |
1292 | socklen_t sslen = sizeof(ss); | |
1293 | ||
1294 | if (getsockname(fd, (struct sockaddr *)&ss, &sslen) < 0) { | |
b16a44e1 | 1295 | error_setg_errno(errp, errno, "%s", |
17c55dec DB |
1296 | "Unable to query local socket address"); |
1297 | return NULL; | |
1298 | } | |
1299 | ||
1300 | return socket_sockaddr_to_address(&ss, sslen, errp); | |
1301 | } | |
1302 | ||
1303 | ||
bd269ebc | 1304 | SocketAddress *socket_remote_address(int fd, Error **errp) |
17c55dec DB |
1305 | { |
1306 | struct sockaddr_storage ss; | |
1307 | socklen_t sslen = sizeof(ss); | |
1308 | ||
1309 | if (getpeername(fd, (struct sockaddr *)&ss, &sslen) < 0) { | |
b16a44e1 | 1310 | error_setg_errno(errp, errno, "%s", |
17c55dec DB |
1311 | "Unable to query remote socket address"); |
1312 | return NULL; | |
1313 | } | |
1314 | ||
1315 | return socket_sockaddr_to_address(&ss, sslen, errp); | |
1316 | } | |
2a8e21c7 | 1317 | |
216411b8 | 1318 | |
bd269ebc MA |
1319 | SocketAddress *socket_address_flatten(SocketAddressLegacy *addr_legacy) |
1320 | { | |
fc0f0059 | 1321 | SocketAddress *addr; |
bd269ebc MA |
1322 | |
1323 | if (!addr_legacy) { | |
1324 | return NULL; | |
1325 | } | |
1326 | ||
fc0f0059 MA |
1327 | addr = g_new(SocketAddress, 1); |
1328 | ||
bd269ebc MA |
1329 | switch (addr_legacy->type) { |
1330 | case SOCKET_ADDRESS_LEGACY_KIND_INET: | |
1331 | addr->type = SOCKET_ADDRESS_TYPE_INET; | |
1332 | QAPI_CLONE_MEMBERS(InetSocketAddress, &addr->u.inet, | |
1333 | addr_legacy->u.inet.data); | |
1334 | break; | |
1335 | case SOCKET_ADDRESS_LEGACY_KIND_UNIX: | |
1336 | addr->type = SOCKET_ADDRESS_TYPE_UNIX; | |
1337 | QAPI_CLONE_MEMBERS(UnixSocketAddress, &addr->u.q_unix, | |
1338 | addr_legacy->u.q_unix.data); | |
1339 | break; | |
1340 | case SOCKET_ADDRESS_LEGACY_KIND_VSOCK: | |
1341 | addr->type = SOCKET_ADDRESS_TYPE_VSOCK; | |
1342 | QAPI_CLONE_MEMBERS(VsockSocketAddress, &addr->u.vsock, | |
1343 | addr_legacy->u.vsock.data); | |
1344 | break; | |
1345 | case SOCKET_ADDRESS_LEGACY_KIND_FD: | |
1346 | addr->type = SOCKET_ADDRESS_TYPE_FD; | |
1347 | QAPI_CLONE_MEMBERS(String, &addr->u.fd, addr_legacy->u.fd.data); | |
1348 | break; | |
1349 | default: | |
1350 | abort(); | |
1351 | } | |
1352 | ||
1353 | return addr; | |
1354 | } |