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