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Commit | Line | Data |
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305b0eb2 AL |
1 | /* |
2 | * inet and unix socket functions for qemu | |
3 | * | |
4 | * (c) 2008 Gerd Hoffmann <kraxel@redhat.com> | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation; under version 2 of the License. | |
9 | * | |
10 | * This program is distributed in the hope that it will be useful, | |
11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
13 | * GNU General Public License for more details. | |
e6d91ab6 PB |
14 | * |
15 | * Contributions after 2012-01-13 are licensed under the terms of the | |
16 | * GNU GPL, version 2 or (at your option) any later version. | |
305b0eb2 | 17 | */ |
aafd7584 | 18 | #include "qemu/osdep.h" |
d247d25f | 19 | |
6a02c806 SH |
20 | #ifdef CONFIG_AF_VSOCK |
21 | #include <linux/vm_sockets.h> | |
22 | #endif /* CONFIG_AF_VSOCK */ | |
23 | ||
83c9089e | 24 | #include "monitor/monitor.h" |
bd269ebc | 25 | #include "qapi/clone-visitor.h" |
da34e65c | 26 | #include "qapi/error.h" |
1de7afc9 | 27 | #include "qemu/sockets.h" |
1de7afc9 | 28 | #include "qemu/main-loop.h" |
216411b8 | 29 | #include "qapi/clone-visitor.h" |
b3db211f DB |
30 | #include "qapi/qobject-input-visitor.h" |
31 | #include "qapi/qobject-output-visitor.h" | |
2a8e21c7 | 32 | #include "qapi-visit.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 | ||
1856835d DB |
95 | /* |
96 | * Matrix we're trying to apply | |
97 | * | |
98 | * ipv4 ipv6 family | |
99 | * - - PF_UNSPEC | |
100 | * - f PF_INET | |
101 | * - t PF_INET6 | |
102 | * f - PF_INET6 | |
103 | * f f <error> | |
104 | * f t PF_INET6 | |
105 | * t - PF_INET | |
106 | * t f PF_INET | |
94bc0d19 | 107 | * t t PF_INET6/PF_UNSPEC |
1856835d | 108 | * |
d43eda3d | 109 | * NB, this matrix is only about getting the necessary results |
1856835d DB |
110 | * from getaddrinfo(). Some of the cases require further work |
111 | * after reading results from getaddrinfo in order to fully | |
94bc0d19 DB |
112 | * apply the logic the end user wants. |
113 | * | |
114 | * In the first and last cases, we must set IPV6_V6ONLY=0 | |
115 | * when binding, to allow a single listener to potentially | |
116 | * accept both IPv4+6 addresses. | |
1856835d | 117 | */ |
c1b412f1 DB |
118 | int inet_ai_family_from_address(InetSocketAddress *addr, |
119 | Error **errp) | |
1856835d DB |
120 | { |
121 | if (addr->has_ipv6 && addr->has_ipv4 && | |
122 | !addr->ipv6 && !addr->ipv4) { | |
123 | error_setg(errp, "Cannot disable IPv4 and IPv6 at same time"); | |
124 | return PF_UNSPEC; | |
125 | } | |
94bc0d19 DB |
126 | if ((addr->has_ipv6 && addr->ipv6) && (addr->has_ipv4 && addr->ipv4)) { |
127 | /* | |
128 | * Some backends can only do a single listener. In that case | |
129 | * we want empty hostname to resolve to "::" and then use the | |
130 | * flag IPV6_V6ONLY==0 to get both protocols on 1 socket. This | |
131 | * doesn't work for addresses other than "", so they're just | |
132 | * inevitably broken until multiple listeners can be used, | |
133 | * and thus we honour getaddrinfo automatic protocol detection | |
134 | * Once all backends do multi-listener, remove the PF_INET6 | |
135 | * branch entirely. | |
136 | */ | |
137 | if (!addr->host || g_str_equal(addr->host, "")) { | |
138 | return PF_INET6; | |
139 | } else { | |
140 | return PF_UNSPEC; | |
141 | } | |
142 | } | |
1856835d DB |
143 | if ((addr->has_ipv6 && addr->ipv6) || (addr->has_ipv4 && !addr->ipv4)) { |
144 | return PF_INET6; | |
145 | } | |
146 | if ((addr->has_ipv4 && addr->ipv4) || (addr->has_ipv6 && !addr->ipv6)) { | |
147 | return PF_INET; | |
148 | } | |
149 | return PF_UNSPEC; | |
150 | } | |
151 | ||
39f80521 KO |
152 | static int create_fast_reuse_socket(struct addrinfo *e) |
153 | { | |
154 | int slisten = qemu_socket(e->ai_family, e->ai_socktype, e->ai_protocol); | |
155 | if (slisten < 0) { | |
156 | return -1; | |
157 | } | |
158 | socket_set_fast_reuse(slisten); | |
159 | return slisten; | |
160 | } | |
161 | ||
89382c3d KO |
162 | static int try_bind(int socket, InetSocketAddress *saddr, struct addrinfo *e) |
163 | { | |
164 | #ifndef IPV6_V6ONLY | |
165 | return bind(socket, e->ai_addr, e->ai_addrlen); | |
166 | #else | |
167 | /* | |
168 | * Deals with first & last cases in matrix in comment | |
169 | * for inet_ai_family_from_address(). | |
170 | */ | |
171 | int v6only = | |
172 | ((!saddr->has_ipv4 && !saddr->has_ipv6) || | |
173 | (saddr->has_ipv4 && saddr->ipv4 && | |
174 | saddr->has_ipv6 && saddr->ipv6)) ? 0 : 1; | |
175 | int stat; | |
176 | ||
177 | rebind: | |
178 | if (e->ai_family == PF_INET6) { | |
179 | qemu_setsockopt(socket, IPPROTO_IPV6, IPV6_V6ONLY, &v6only, | |
180 | sizeof(v6only)); | |
181 | } | |
182 | ||
183 | stat = bind(socket, e->ai_addr, e->ai_addrlen); | |
184 | if (!stat) { | |
185 | return 0; | |
186 | } | |
187 | ||
188 | /* If we got EADDRINUSE from an IPv6 bind & v6only is unset, | |
189 | * it could be that the IPv4 port is already claimed, so retry | |
190 | * with v6only set | |
191 | */ | |
192 | if (e->ai_family == PF_INET6 && errno == EADDRINUSE && !v6only) { | |
193 | v6only = 1; | |
194 | goto rebind; | |
195 | } | |
196 | return stat; | |
197 | #endif | |
198 | } | |
199 | ||
1856835d DB |
200 | static int inet_listen_saddr(InetSocketAddress *saddr, |
201 | int port_offset, | |
202 | bool update_addr, | |
203 | Error **errp) | |
d247d25f AL |
204 | { |
205 | struct addrinfo ai,*res,*e; | |
d247d25f AL |
206 | char port[33]; |
207 | char uaddr[INET6_ADDRSTRLEN+1]; | |
208 | char uport[33]; | |
9cf961bb | 209 | int rc, port_min, port_max, p; |
10a7b7e6 | 210 | int slisten = -1; |
9cf961bb KO |
211 | int saved_errno = 0; |
212 | bool socket_created = false; | |
1856835d | 213 | Error *err = NULL; |
d247d25f AL |
214 | |
215 | memset(&ai,0, sizeof(ai)); | |
3de3d698 | 216 | ai.ai_flags = AI_PASSIVE; |
6979a813 DB |
217 | if (saddr->has_numeric && saddr->numeric) { |
218 | ai.ai_flags |= AI_NUMERICHOST | AI_NUMERICSERV; | |
219 | } | |
1856835d | 220 | ai.ai_family = inet_ai_family_from_address(saddr, &err); |
e5bc776f | 221 | ai.ai_socktype = SOCK_STREAM; |
d247d25f | 222 | |
1856835d DB |
223 | if (err) { |
224 | error_propagate(errp, err); | |
225 | return -1; | |
226 | } | |
227 | ||
228 | if (saddr->host == NULL) { | |
0983f5e6 | 229 | error_setg(errp, "host not specified"); |
e5bc776f | 230 | return -1; |
d247d25f | 231 | } |
1856835d DB |
232 | if (saddr->port != NULL) { |
233 | pstrcpy(port, sizeof(port), saddr->port); | |
0983f5e6 DB |
234 | } else { |
235 | port[0] = '\0'; | |
236 | } | |
d247d25f AL |
237 | |
238 | /* lookup */ | |
8bc89127 GH |
239 | if (port_offset) { |
240 | unsigned long long baseport; | |
0983f5e6 DB |
241 | if (strlen(port) == 0) { |
242 | error_setg(errp, "port not specified"); | |
243 | return -1; | |
244 | } | |
8bc89127 GH |
245 | if (parse_uint_full(port, &baseport, 10) < 0) { |
246 | error_setg(errp, "can't convert to a number: %s", port); | |
247 | return -1; | |
248 | } | |
249 | if (baseport > 65535 || | |
250 | baseport + port_offset > 65535) { | |
251 | error_setg(errp, "port %s out of range", port); | |
252 | return -1; | |
253 | } | |
254 | snprintf(port, sizeof(port), "%d", (int)baseport + port_offset); | |
255 | } | |
1856835d | 256 | rc = getaddrinfo(strlen(saddr->host) ? saddr->host : NULL, |
0983f5e6 | 257 | strlen(port) ? port : NULL, &ai, &res); |
d247d25f | 258 | if (rc != 0) { |
1856835d DB |
259 | error_setg(errp, "address resolution failed for %s:%s: %s", |
260 | saddr->host, port, gai_strerror(rc)); | |
d247d25f AL |
261 | return -1; |
262 | } | |
d247d25f | 263 | |
9cf961bb | 264 | /* create socket + bind/listen */ |
d247d25f | 265 | for (e = res; e != NULL; e = e->ai_next) { |
39b6efc8 VS |
266 | getnameinfo((struct sockaddr*)e->ai_addr,e->ai_addrlen, |
267 | uaddr,INET6_ADDRSTRLEN,uport,32, | |
268 | NI_NUMERICHOST | NI_NUMERICSERV); | |
39f80521 | 269 | |
877691f9 | 270 | port_min = inet_getport(e); |
1856835d | 271 | port_max = saddr->has_to ? saddr->to + port_offset : port_min; |
877691f9 MA |
272 | for (p = port_min; p <= port_max; p++) { |
273 | inet_setport(e, p); | |
10a7b7e6 DB |
274 | |
275 | slisten = create_fast_reuse_socket(e); | |
276 | if (slisten < 0) { | |
277 | /* First time we expect we might fail to create the socket | |
278 | * eg if 'e' has AF_INET6 but ipv6 kmod is not loaded. | |
279 | * Later iterations should always succeed if first iteration | |
280 | * worked though, so treat that as fatal. | |
281 | */ | |
282 | if (p == port_min) { | |
9cf961bb KO |
283 | continue; |
284 | } else { | |
10a7b7e6 DB |
285 | error_setg_errno(errp, errno, |
286 | "Failed to recreate failed listening socket"); | |
9cf961bb | 287 | goto listen_failed; |
029409e5 | 288 | } |
d247d25f | 289 | } |
10a7b7e6 DB |
290 | socket_created = true; |
291 | ||
292 | rc = try_bind(slisten, saddr, e); | |
293 | if (rc < 0) { | |
294 | if (errno != EADDRINUSE) { | |
295 | error_setg_errno(errp, errno, "Failed to bind socket"); | |
296 | goto listen_failed; | |
297 | } | |
298 | } else { | |
299 | if (!listen(slisten, 1)) { | |
300 | goto listen_ok; | |
301 | } | |
302 | if (errno != EADDRINUSE) { | |
303 | error_setg_errno(errp, errno, "Failed to listen on socket"); | |
304 | goto listen_failed; | |
305 | } | |
9cf961bb KO |
306 | } |
307 | /* Someone else managed to bind to the same port and beat us | |
308 | * to listen on it! Socket semantics does not allow us to | |
309 | * recover from this situation, so we need to recreate the | |
310 | * socket to allow bind attempts for subsequent ports: | |
311 | */ | |
312 | closesocket(slisten); | |
10a7b7e6 | 313 | slisten = -1; |
d247d25f | 314 | } |
9cf961bb KO |
315 | } |
316 | error_setg_errno(errp, errno, | |
317 | socket_created ? | |
318 | "Failed to find an available port" : | |
319 | "Failed to create a socket"); | |
320 | listen_failed: | |
321 | saved_errno = errno; | |
322 | if (slisten >= 0) { | |
d247d25f AL |
323 | closesocket(slisten); |
324 | } | |
d247d25f | 325 | freeaddrinfo(res); |
9cf961bb | 326 | errno = saved_errno; |
d247d25f AL |
327 | return -1; |
328 | ||
9cf961bb | 329 | listen_ok: |
1856835d DB |
330 | if (update_addr) { |
331 | g_free(saddr->host); | |
332 | saddr->host = g_strdup(uaddr); | |
333 | g_free(saddr->port); | |
334 | saddr->port = g_strdup_printf("%d", | |
335 | inet_getport(e) - port_offset); | |
336 | saddr->has_ipv6 = saddr->ipv6 = e->ai_family == PF_INET6; | |
337 | saddr->has_ipv4 = saddr->ipv4 = e->ai_family != PF_INET6; | |
338 | } | |
d247d25f AL |
339 | freeaddrinfo(res); |
340 | return slisten; | |
341 | } | |
342 | ||
05bc1d8a MT |
343 | #ifdef _WIN32 |
344 | #define QEMU_SOCKET_RC_INPROGRESS(rc) \ | |
345 | ((rc) == -EINPROGRESS || (rc) == -EWOULDBLOCK || (rc) == -WSAEALREADY) | |
346 | #else | |
347 | #define QEMU_SOCKET_RC_INPROGRESS(rc) \ | |
348 | ((rc) == -EINPROGRESS) | |
349 | #endif | |
350 | ||
b2587932 | 351 | static int inet_connect_addr(struct addrinfo *addr, Error **errp); |
233aa5c2 | 352 | |
b2587932 | 353 | static int inet_connect_addr(struct addrinfo *addr, Error **errp) |
233aa5c2 OW |
354 | { |
355 | int sock, rc; | |
356 | ||
05bc1d8a MT |
357 | sock = qemu_socket(addr->ai_family, addr->ai_socktype, addr->ai_protocol); |
358 | if (sock < 0) { | |
235256a2 | 359 | error_setg_errno(errp, errno, "Failed to create socket"); |
05bc1d8a MT |
360 | return -1; |
361 | } | |
04fd1c78 | 362 | socket_set_fast_reuse(sock); |
b2587932 | 363 | |
05bc1d8a MT |
364 | /* connect to peer */ |
365 | do { | |
366 | rc = 0; | |
367 | if (connect(sock, addr->ai_addr, addr->ai_addrlen) < 0) { | |
b16a44e1 | 368 | rc = -errno; |
05bc1d8a MT |
369 | } |
370 | } while (rc == -EINTR); | |
371 | ||
b2587932 | 372 | if (rc < 0) { |
235256a2 | 373 | error_setg_errno(errp, errno, "Failed to connect socket"); |
05bc1d8a MT |
374 | closesocket(sock); |
375 | return -1; | |
376 | } | |
b2587932 | 377 | |
05bc1d8a MT |
378 | return sock; |
379 | } | |
380 | ||
2942e420 DB |
381 | static struct addrinfo *inet_parse_connect_saddr(InetSocketAddress *saddr, |
382 | Error **errp) | |
05bc1d8a MT |
383 | { |
384 | struct addrinfo ai, *res; | |
385 | int rc; | |
2942e420 | 386 | Error *err = NULL; |
340849a9 | 387 | static int useV4Mapped = 1; |
d247d25f | 388 | |
05bc1d8a | 389 | memset(&ai, 0, sizeof(ai)); |
233aa5c2 | 390 | |
340849a9 DB |
391 | ai.ai_flags = AI_CANONNAME | AI_ADDRCONFIG; |
392 | if (atomic_read(&useV4Mapped)) { | |
393 | ai.ai_flags |= AI_V4MAPPED; | |
394 | } | |
2942e420 | 395 | ai.ai_family = inet_ai_family_from_address(saddr, &err); |
f4c94c7c | 396 | ai.ai_socktype = SOCK_STREAM; |
d247d25f | 397 | |
2942e420 DB |
398 | if (err) { |
399 | error_propagate(errp, err); | |
05bc1d8a | 400 | return NULL; |
d247d25f AL |
401 | } |
402 | ||
2942e420 DB |
403 | if (saddr->host == NULL || saddr->port == NULL) { |
404 | error_setg(errp, "host and/or port not specified"); | |
405 | return NULL; | |
05bc1d8a | 406 | } |
d247d25f AL |
407 | |
408 | /* lookup */ | |
2942e420 | 409 | rc = getaddrinfo(saddr->host, saddr->port, &ai, &res); |
340849a9 DB |
410 | |
411 | /* At least FreeBSD and OS-X 10.6 declare AI_V4MAPPED but | |
412 | * then don't implement it in their getaddrinfo(). Detect | |
413 | * this and retry without the flag since that's preferrable | |
414 | * to a fatal error | |
415 | */ | |
416 | if (rc == EAI_BADFLAGS && | |
417 | (ai.ai_flags & AI_V4MAPPED)) { | |
418 | atomic_set(&useV4Mapped, 0); | |
419 | ai.ai_flags &= ~AI_V4MAPPED; | |
420 | rc = getaddrinfo(saddr->host, saddr->port, &ai, &res); | |
421 | } | |
05bc1d8a | 422 | if (rc != 0) { |
2942e420 DB |
423 | error_setg(errp, "address resolution failed for %s:%s: %s", |
424 | saddr->host, saddr->port, gai_strerror(rc)); | |
05bc1d8a MT |
425 | return NULL; |
426 | } | |
427 | return res; | |
428 | } | |
429 | ||
5db5f44c OW |
430 | /** |
431 | * Create a socket and connect it to an address. | |
432 | * | |
2942e420 | 433 | * @saddr: Inet socket address specification |
5db5f44c OW |
434 | * @errp: set on error |
435 | * | |
436 | * Returns: -1 on error, file descriptor on success. | |
437 | */ | |
b2587932 | 438 | int inet_connect_saddr(InetSocketAddress *saddr, Error **errp) |
05bc1d8a | 439 | { |
3f9286b7 | 440 | Error *local_err = NULL; |
05bc1d8a MT |
441 | struct addrinfo *res, *e; |
442 | int sock = -1; | |
05bc1d8a | 443 | |
2942e420 | 444 | res = inet_parse_connect_saddr(saddr, errp); |
05bc1d8a MT |
445 | if (!res) { |
446 | return -1; | |
447 | } | |
448 | ||
d247d25f | 449 | for (e = res; e != NULL; e = e->ai_next) { |
3f9286b7 MA |
450 | error_free(local_err); |
451 | local_err = NULL; | |
b2587932 | 452 | sock = inet_connect_addr(e, &local_err); |
3f9286b7 | 453 | if (sock >= 0) { |
05bc1d8a | 454 | break; |
a6ba35b3 | 455 | } |
d247d25f | 456 | } |
3f9286b7 MA |
457 | |
458 | if (sock < 0) { | |
459 | error_propagate(errp, local_err); | |
3f9286b7 | 460 | } |
b2587932 | 461 | |
d247d25f | 462 | freeaddrinfo(res); |
05bc1d8a | 463 | return sock; |
d247d25f AL |
464 | } |
465 | ||
8b39910e DB |
466 | static int inet_dgram_saddr(InetSocketAddress *sraddr, |
467 | InetSocketAddress *sladdr, | |
468 | Error **errp) | |
7e1b35b4 GH |
469 | { |
470 | struct addrinfo ai, *peer = NULL, *local = NULL; | |
471 | const char *addr; | |
472 | const char *port; | |
7e1b35b4 | 473 | int sock = -1, rc; |
8b39910e | 474 | Error *err = NULL; |
7e1b35b4 GH |
475 | |
476 | /* lookup peer addr */ | |
477 | memset(&ai,0, sizeof(ai)); | |
3de3d698 | 478 | ai.ai_flags = AI_CANONNAME | AI_V4MAPPED | AI_ADDRCONFIG; |
8b39910e | 479 | ai.ai_family = inet_ai_family_from_address(sraddr, &err); |
7e1b35b4 GH |
480 | ai.ai_socktype = SOCK_DGRAM; |
481 | ||
8b39910e DB |
482 | if (err) { |
483 | error_propagate(errp, err); | |
58c652c0 | 484 | goto err; |
8b39910e DB |
485 | } |
486 | ||
487 | addr = sraddr->host; | |
488 | port = sraddr->port; | |
7e1b35b4 GH |
489 | if (addr == NULL || strlen(addr) == 0) { |
490 | addr = "localhost"; | |
491 | } | |
492 | if (port == NULL || strlen(port) == 0) { | |
4f085c82 | 493 | error_setg(errp, "remote port not specified"); |
58c652c0 | 494 | goto err; |
7e1b35b4 GH |
495 | } |
496 | ||
9cd1883c | 497 | if ((rc = getaddrinfo(addr, port, &ai, &peer)) != 0) { |
4f085c82 PB |
498 | error_setg(errp, "address resolution failed for %s:%s: %s", addr, port, |
499 | gai_strerror(rc)); | |
26015051 | 500 | goto err; |
7e1b35b4 | 501 | } |
7e1b35b4 GH |
502 | |
503 | /* lookup local addr */ | |
504 | memset(&ai,0, sizeof(ai)); | |
505 | ai.ai_flags = AI_PASSIVE; | |
506 | ai.ai_family = peer->ai_family; | |
507 | ai.ai_socktype = SOCK_DGRAM; | |
508 | ||
8b39910e DB |
509 | if (sladdr) { |
510 | addr = sladdr->host; | |
511 | port = sladdr->port; | |
512 | if (addr == NULL || strlen(addr) == 0) { | |
513 | addr = NULL; | |
514 | } | |
515 | if (!port || strlen(port) == 0) { | |
516 | port = "0"; | |
517 | } | |
518 | } else { | |
7e1b35b4 | 519 | addr = NULL; |
7e1b35b4 | 520 | port = "0"; |
8b39910e | 521 | } |
7e1b35b4 | 522 | |
9cd1883c | 523 | if ((rc = getaddrinfo(addr, port, &ai, &local)) != 0) { |
4f085c82 PB |
524 | error_setg(errp, "address resolution failed for %s:%s: %s", addr, port, |
525 | gai_strerror(rc)); | |
39b38459 | 526 | goto err; |
7e1b35b4 | 527 | } |
7e1b35b4 GH |
528 | |
529 | /* create socket */ | |
40ff6d7e | 530 | sock = qemu_socket(peer->ai_family, peer->ai_socktype, peer->ai_protocol); |
7e1b35b4 | 531 | if (sock < 0) { |
235256a2 | 532 | error_setg_errno(errp, errno, "Failed to create socket"); |
7e1b35b4 GH |
533 | goto err; |
534 | } | |
04fd1c78 | 535 | socket_set_fast_reuse(sock); |
7e1b35b4 GH |
536 | |
537 | /* bind socket */ | |
7e1b35b4 | 538 | if (bind(sock, local->ai_addr, local->ai_addrlen) < 0) { |
235256a2 | 539 | error_setg_errno(errp, errno, "Failed to bind socket"); |
7e1b35b4 GH |
540 | goto err; |
541 | } | |
542 | ||
543 | /* connect to peer */ | |
7e1b35b4 | 544 | if (connect(sock,peer->ai_addr,peer->ai_addrlen) < 0) { |
235256a2 | 545 | error_setg_errno(errp, errno, "Failed to connect socket"); |
7e1b35b4 GH |
546 | goto err; |
547 | } | |
548 | ||
549 | freeaddrinfo(local); | |
550 | freeaddrinfo(peer); | |
551 | return sock; | |
552 | ||
553 | err: | |
26015051 | 554 | if (sock != -1) { |
7e1b35b4 | 555 | closesocket(sock); |
26015051 C |
556 | } |
557 | if (local) { | |
7e1b35b4 | 558 | freeaddrinfo(local); |
26015051 C |
559 | } |
560 | if (peer) { | |
7e1b35b4 | 561 | freeaddrinfo(peer); |
26015051 C |
562 | } |
563 | ||
7e1b35b4 GH |
564 | return -1; |
565 | } | |
566 | ||
f4c94c7c | 567 | /* compatibility wrapper */ |
0785bd7a | 568 | int inet_parse(InetSocketAddress *addr, const char *str, Error **errp) |
f4c94c7c GH |
569 | { |
570 | const char *optstr, *h; | |
55a10996 | 571 | char host[65]; |
f4c94c7c | 572 | char port[33]; |
879e45c7 | 573 | int to; |
f4c94c7c GH |
574 | int pos; |
575 | ||
0785bd7a | 576 | memset(addr, 0, sizeof(*addr)); |
879e45c7 | 577 | |
f4c94c7c GH |
578 | /* parse address */ |
579 | if (str[0] == ':') { | |
580 | /* no host given */ | |
879e45c7 | 581 | host[0] = '\0'; |
9cd1883c | 582 | if (sscanf(str, ":%32[^,]%n", port, &pos) != 1) { |
2f002c43 | 583 | error_setg(errp, "error parsing port in address '%s'", str); |
0785bd7a | 584 | return -1; |
f4c94c7c GH |
585 | } |
586 | } else if (str[0] == '[') { | |
587 | /* IPv6 addr */ | |
9cd1883c | 588 | if (sscanf(str, "[%64[^]]]:%32[^,]%n", host, port, &pos) != 2) { |
2f002c43 | 589 | error_setg(errp, "error parsing IPv6 address '%s'", str); |
0785bd7a | 590 | return -1; |
f4c94c7c | 591 | } |
f4c94c7c | 592 | } else { |
391b7b97 | 593 | /* hostname or IPv4 addr */ |
9cd1883c | 594 | if (sscanf(str, "%64[^:]:%32[^,]%n", host, port, &pos) != 2) { |
2f002c43 | 595 | error_setg(errp, "error parsing address '%s'", str); |
0785bd7a | 596 | return -1; |
f4c94c7c GH |
597 | } |
598 | } | |
879e45c7 PB |
599 | |
600 | addr->host = g_strdup(host); | |
601 | addr->port = g_strdup(port); | |
f4c94c7c GH |
602 | |
603 | /* parse options */ | |
604 | optstr = str + pos; | |
605 | h = strstr(optstr, ",to="); | |
879e45c7 | 606 | if (h) { |
1ccbc285 AP |
607 | h += 4; |
608 | if (sscanf(h, "%d%n", &to, &pos) != 1 || | |
609 | (h[pos] != '\0' && h[pos] != ',')) { | |
879e45c7 | 610 | error_setg(errp, "error parsing to= argument"); |
0785bd7a | 611 | return -1; |
879e45c7 PB |
612 | } |
613 | addr->has_to = true; | |
614 | addr->to = to; | |
615 | } | |
616 | if (strstr(optstr, ",ipv4")) { | |
617 | addr->ipv4 = addr->has_ipv4 = true; | |
618 | } | |
619 | if (strstr(optstr, ",ipv6")) { | |
620 | addr->ipv6 = addr->has_ipv6 = true; | |
621 | } | |
0785bd7a | 622 | return 0; |
879e45c7 PB |
623 | } |
624 | ||
e5bc776f | 625 | |
5db5f44c OW |
626 | /** |
627 | * Create a blocking socket and connect it to an address. | |
628 | * | |
629 | * @str: address string | |
630 | * @errp: set in case of an error | |
631 | * | |
632 | * Returns -1 in case of error, file descriptor on success | |
633 | **/ | |
634 | int inet_connect(const char *str, Error **errp) | |
f4c94c7c | 635 | { |
f4c94c7c | 636 | int sock = -1; |
0785bd7a | 637 | InetSocketAddress *addr = g_new(InetSocketAddress, 1); |
f4c94c7c | 638 | |
0785bd7a | 639 | if (!inet_parse(addr, str, errp)) { |
b2587932 | 640 | sock = inet_connect_saddr(addr, errp); |
5db5f44c | 641 | } |
0785bd7a | 642 | qapi_free_InetSocketAddress(addr); |
5db5f44c OW |
643 | return sock; |
644 | } | |
645 | ||
6a02c806 SH |
646 | #ifdef CONFIG_AF_VSOCK |
647 | static bool vsock_parse_vaddr_to_sockaddr(const VsockSocketAddress *vaddr, | |
648 | struct sockaddr_vm *svm, | |
649 | Error **errp) | |
650 | { | |
651 | unsigned long long val; | |
652 | ||
653 | memset(svm, 0, sizeof(*svm)); | |
654 | svm->svm_family = AF_VSOCK; | |
655 | ||
656 | if (parse_uint_full(vaddr->cid, &val, 10) < 0 || | |
657 | val > UINT32_MAX) { | |
658 | error_setg(errp, "Failed to parse cid '%s'", vaddr->cid); | |
659 | return false; | |
660 | } | |
661 | svm->svm_cid = val; | |
662 | ||
663 | if (parse_uint_full(vaddr->port, &val, 10) < 0 || | |
664 | val > UINT32_MAX) { | |
665 | error_setg(errp, "Failed to parse port '%s'", vaddr->port); | |
666 | return false; | |
667 | } | |
668 | svm->svm_port = val; | |
669 | ||
670 | return true; | |
671 | } | |
672 | ||
b2587932 | 673 | static int vsock_connect_addr(const struct sockaddr_vm *svm, Error **errp) |
6a02c806 SH |
674 | { |
675 | int sock, rc; | |
676 | ||
6a02c806 SH |
677 | sock = qemu_socket(AF_VSOCK, SOCK_STREAM, 0); |
678 | if (sock < 0) { | |
679 | error_setg_errno(errp, errno, "Failed to create socket"); | |
680 | return -1; | |
681 | } | |
b2587932 | 682 | |
6a02c806 SH |
683 | /* connect to peer */ |
684 | do { | |
685 | rc = 0; | |
686 | if (connect(sock, (const struct sockaddr *)svm, sizeof(*svm)) < 0) { | |
687 | rc = -errno; | |
688 | } | |
689 | } while (rc == -EINTR); | |
690 | ||
b2587932 | 691 | if (rc < 0) { |
6a02c806 SH |
692 | error_setg_errno(errp, errno, "Failed to connect socket"); |
693 | closesocket(sock); | |
694 | return -1; | |
695 | } | |
b2587932 | 696 | |
6a02c806 SH |
697 | return sock; |
698 | } | |
699 | ||
b2587932 | 700 | static int vsock_connect_saddr(VsockSocketAddress *vaddr, Error **errp) |
6a02c806 SH |
701 | { |
702 | struct sockaddr_vm svm; | |
703 | int sock = -1; | |
6a02c806 SH |
704 | |
705 | if (!vsock_parse_vaddr_to_sockaddr(vaddr, &svm, errp)) { | |
706 | return -1; | |
707 | } | |
708 | ||
b2587932 | 709 | sock = vsock_connect_addr(&svm, errp); |
6a02c806 | 710 | |
6a02c806 SH |
711 | return sock; |
712 | } | |
713 | ||
714 | static int vsock_listen_saddr(VsockSocketAddress *vaddr, | |
715 | Error **errp) | |
716 | { | |
717 | struct sockaddr_vm svm; | |
718 | int slisten; | |
719 | ||
720 | if (!vsock_parse_vaddr_to_sockaddr(vaddr, &svm, errp)) { | |
721 | return -1; | |
722 | } | |
723 | ||
724 | slisten = qemu_socket(AF_VSOCK, SOCK_STREAM, 0); | |
725 | if (slisten < 0) { | |
726 | error_setg_errno(errp, errno, "Failed to create socket"); | |
727 | return -1; | |
728 | } | |
729 | ||
730 | if (bind(slisten, (const struct sockaddr *)&svm, sizeof(svm)) != 0) { | |
731 | error_setg_errno(errp, errno, "Failed to bind socket"); | |
732 | closesocket(slisten); | |
733 | return -1; | |
734 | } | |
735 | ||
736 | if (listen(slisten, 1) != 0) { | |
737 | error_setg_errno(errp, errno, "Failed to listen on socket"); | |
738 | closesocket(slisten); | |
739 | return -1; | |
740 | } | |
741 | return slisten; | |
742 | } | |
743 | ||
4db5c619 MA |
744 | static int vsock_parse(VsockSocketAddress *addr, const char *str, |
745 | Error **errp) | |
6a02c806 | 746 | { |
6a02c806 SH |
747 | char cid[33]; |
748 | char port[33]; | |
749 | int n; | |
750 | ||
751 | if (sscanf(str, "%32[^:]:%32[^,]%n", cid, port, &n) != 2) { | |
752 | error_setg(errp, "error parsing address '%s'", str); | |
4db5c619 | 753 | return -1; |
6a02c806 SH |
754 | } |
755 | if (str[n] != '\0') { | |
756 | error_setg(errp, "trailing characters in address '%s'", str); | |
4db5c619 | 757 | return -1; |
6a02c806 SH |
758 | } |
759 | ||
6a02c806 SH |
760 | addr->cid = g_strdup(cid); |
761 | addr->port = g_strdup(port); | |
4db5c619 | 762 | return 0; |
6a02c806 SH |
763 | } |
764 | #else | |
765 | static void vsock_unsupported(Error **errp) | |
766 | { | |
767 | error_setg(errp, "socket family AF_VSOCK unsupported"); | |
768 | } | |
769 | ||
b2587932 | 770 | static int vsock_connect_saddr(VsockSocketAddress *vaddr, Error **errp) |
6a02c806 SH |
771 | { |
772 | vsock_unsupported(errp); | |
773 | return -1; | |
774 | } | |
775 | ||
776 | static int vsock_listen_saddr(VsockSocketAddress *vaddr, | |
777 | Error **errp) | |
778 | { | |
779 | vsock_unsupported(errp); | |
780 | return -1; | |
781 | } | |
782 | ||
4db5c619 MA |
783 | static int vsock_parse(VsockSocketAddress *addr, const char *str, |
784 | Error **errp) | |
6a02c806 SH |
785 | { |
786 | vsock_unsupported(errp); | |
4db5c619 | 787 | return -1; |
6a02c806 SH |
788 | } |
789 | #endif /* CONFIG_AF_VSOCK */ | |
790 | ||
d247d25f AL |
791 | #ifndef _WIN32 |
792 | ||
1856835d DB |
793 | static int unix_listen_saddr(UnixSocketAddress *saddr, |
794 | bool update_addr, | |
795 | Error **errp) | |
d247d25f AL |
796 | { |
797 | struct sockaddr_un un; | |
62b6adfb | 798 | int sock, fd; |
ad9579aa DB |
799 | char *pathbuf = NULL; |
800 | const char *path; | |
d247d25f | 801 | |
40ff6d7e | 802 | sock = qemu_socket(PF_UNIX, SOCK_STREAM, 0); |
d247d25f | 803 | if (sock < 0) { |
b658c53d | 804 | error_setg_errno(errp, errno, "Failed to create Unix socket"); |
39b6efc8 | 805 | return -1; |
d247d25f AL |
806 | } |
807 | ||
ad9579aa DB |
808 | if (saddr->path && saddr->path[0]) { |
809 | path = saddr->path; | |
d247d25f | 810 | } else { |
b658c53d PB |
811 | const char *tmpdir = getenv("TMPDIR"); |
812 | tmpdir = tmpdir ? tmpdir : "/tmp"; | |
ad9579aa DB |
813 | path = pathbuf = g_strdup_printf("%s/qemu-socket-XXXXXX", tmpdir); |
814 | } | |
b658c53d | 815 | |
ad9579aa DB |
816 | if (strlen(path) > sizeof(un.sun_path)) { |
817 | error_setg(errp, "UNIX socket path '%s' is too long", path); | |
818 | error_append_hint(errp, "Path must be less than %zu bytes\n", | |
819 | sizeof(un.sun_path)); | |
820 | goto err; | |
821 | } | |
822 | ||
823 | if (pathbuf != NULL) { | |
d247d25f AL |
824 | /* |
825 | * This dummy fd usage silences the mktemp() unsecure warning. | |
826 | * Using mkstemp() doesn't make things more secure here | |
827 | * though. bind() complains about existing files, so we have | |
828 | * to unlink first and thus re-open the race window. The | |
829 | * worst case possible is bind() failing, i.e. a DoS attack. | |
830 | */ | |
ad9579aa | 831 | fd = mkstemp(pathbuf); |
b658c53d PB |
832 | if (fd < 0) { |
833 | error_setg_errno(errp, errno, | |
ad9579aa | 834 | "Failed to make a temporary socket %s", pathbuf); |
b658c53d PB |
835 | goto err; |
836 | } | |
837 | close(fd); | |
d247d25f | 838 | } |
d247d25f | 839 | |
ad9579aa | 840 | if (unlink(path) < 0 && errno != ENOENT) { |
0ef705a2 | 841 | error_setg_errno(errp, errno, |
ad9579aa | 842 | "Failed to unlink socket %s", path); |
0ef705a2 CR |
843 | goto err; |
844 | } | |
ad9579aa DB |
845 | |
846 | memset(&un, 0, sizeof(un)); | |
847 | un.sun_family = AF_UNIX; | |
848 | strncpy(un.sun_path, path, sizeof(un.sun_path)); | |
849 | ||
d247d25f | 850 | if (bind(sock, (struct sockaddr*) &un, sizeof(un)) < 0) { |
56382bd5 | 851 | error_setg_errno(errp, errno, "Failed to bind socket to %s", path); |
d247d25f AL |
852 | goto err; |
853 | } | |
854 | if (listen(sock, 1) < 0) { | |
235256a2 | 855 | error_setg_errno(errp, errno, "Failed to listen on socket"); |
d247d25f AL |
856 | goto err; |
857 | } | |
858 | ||
ad9579aa DB |
859 | if (update_addr && pathbuf) { |
860 | g_free(saddr->path); | |
861 | saddr->path = pathbuf; | |
862 | } else { | |
863 | g_free(pathbuf); | |
864 | } | |
d247d25f AL |
865 | return sock; |
866 | ||
867 | err: | |
ad9579aa | 868 | g_free(pathbuf); |
d247d25f AL |
869 | closesocket(sock); |
870 | return -1; | |
871 | } | |
872 | ||
b2587932 | 873 | static int unix_connect_saddr(UnixSocketAddress *saddr, Error **errp) |
d247d25f AL |
874 | { |
875 | struct sockaddr_un un; | |
1fc05adf | 876 | int sock, rc; |
d247d25f | 877 | |
2942e420 | 878 | if (saddr->path == NULL) { |
312fd5f2 | 879 | error_setg(errp, "unix connect: no path specified"); |
2af2bf67 GH |
880 | return -1; |
881 | } | |
882 | ||
40ff6d7e | 883 | sock = qemu_socket(PF_UNIX, SOCK_STREAM, 0); |
d247d25f | 884 | if (sock < 0) { |
235256a2 | 885 | error_setg_errno(errp, errno, "Failed to create socket"); |
39b6efc8 | 886 | return -1; |
d247d25f AL |
887 | } |
888 | ||
ad9579aa DB |
889 | if (strlen(saddr->path) > sizeof(un.sun_path)) { |
890 | error_setg(errp, "UNIX socket path '%s' is too long", saddr->path); | |
891 | error_append_hint(errp, "Path must be less than %zu bytes\n", | |
892 | sizeof(un.sun_path)); | |
893 | goto err; | |
894 | } | |
895 | ||
d247d25f AL |
896 | memset(&un, 0, sizeof(un)); |
897 | un.sun_family = AF_UNIX; | |
ad9579aa | 898 | strncpy(un.sun_path, saddr->path, sizeof(un.sun_path)); |
1fc05adf PB |
899 | |
900 | /* connect to peer */ | |
901 | do { | |
902 | rc = 0; | |
903 | if (connect(sock, (struct sockaddr *) &un, sizeof(un)) < 0) { | |
b16a44e1 | 904 | rc = -errno; |
1fc05adf PB |
905 | } |
906 | } while (rc == -EINTR); | |
907 | ||
1fc05adf | 908 | if (rc < 0) { |
ad9579aa DB |
909 | error_setg_errno(errp, -rc, "Failed to connect socket %s", |
910 | saddr->path); | |
911 | goto err; | |
d247d25f AL |
912 | } |
913 | ||
d247d25f | 914 | return sock; |
ad9579aa DB |
915 | |
916 | err: | |
917 | close(sock); | |
ad9579aa | 918 | return -1; |
d247d25f AL |
919 | } |
920 | ||
0c814709 PB |
921 | #else |
922 | ||
1856835d DB |
923 | static int unix_listen_saddr(UnixSocketAddress *saddr, |
924 | bool update_addr, | |
925 | Error **errp) | |
0c814709 | 926 | { |
58899664 | 927 | error_setg(errp, "unix sockets are not available on windows"); |
0c814709 PB |
928 | errno = ENOTSUP; |
929 | return -1; | |
930 | } | |
931 | ||
b2587932 | 932 | static int unix_connect_saddr(UnixSocketAddress *saddr, Error **errp) |
0c814709 | 933 | { |
58899664 | 934 | error_setg(errp, "unix sockets are not available on windows"); |
0c814709 PB |
935 | errno = ENOTSUP; |
936 | return -1; | |
937 | } | |
938 | #endif | |
939 | ||
2af2bf67 | 940 | /* compatibility wrapper */ |
7fc4e63e | 941 | int unix_listen(const char *str, char *ostr, int olen, Error **errp) |
62b6adfb | 942 | { |
62b6adfb GH |
943 | char *path, *optstr; |
944 | int sock, len; | |
1856835d | 945 | UnixSocketAddress *saddr; |
62b6adfb | 946 | |
1856835d | 947 | saddr = g_new0(UnixSocketAddress, 1); |
62b6adfb GH |
948 | |
949 | optstr = strchr(str, ','); | |
950 | if (optstr) { | |
951 | len = optstr - str; | |
952 | if (len) { | |
7267c094 | 953 | path = g_malloc(len+1); |
62b6adfb | 954 | snprintf(path, len+1, "%.*s", len, str); |
1856835d | 955 | saddr->path = path; |
62b6adfb GH |
956 | } |
957 | } else { | |
1856835d | 958 | saddr->path = g_strdup(str); |
62b6adfb GH |
959 | } |
960 | ||
1856835d | 961 | sock = unix_listen_saddr(saddr, true, errp); |
62b6adfb | 962 | |
26015051 | 963 | if (sock != -1 && ostr) { |
1856835d | 964 | snprintf(ostr, olen, "%s%s", saddr->path, optstr ? optstr : ""); |
26015051 C |
965 | } |
966 | ||
1856835d | 967 | qapi_free_UnixSocketAddress(saddr); |
62b6adfb GH |
968 | return sock; |
969 | } | |
970 | ||
7fc4e63e | 971 | int unix_connect(const char *path, Error **errp) |
2af2bf67 | 972 | { |
2942e420 | 973 | UnixSocketAddress *saddr; |
2af2bf67 GH |
974 | int sock; |
975 | ||
2942e420 DB |
976 | saddr = g_new0(UnixSocketAddress, 1); |
977 | saddr->path = g_strdup(path); | |
b2587932 | 978 | sock = unix_connect_saddr(saddr, errp); |
2942e420 | 979 | qapi_free_UnixSocketAddress(saddr); |
1fc05adf PB |
980 | return sock; |
981 | } | |
982 | ||
983 | ||
bd269ebc | 984 | SocketAddress *socket_parse(const char *str, Error **errp) |
101f9cbc | 985 | { |
bd269ebc | 986 | SocketAddress *addr; |
101f9cbc | 987 | |
bd269ebc | 988 | addr = g_new0(SocketAddress, 1); |
101f9cbc PB |
989 | if (strstart(str, "unix:", NULL)) { |
990 | if (str[5] == '\0') { | |
312fd5f2 | 991 | error_setg(errp, "invalid Unix socket address"); |
101f9cbc PB |
992 | goto fail; |
993 | } else { | |
bd269ebc MA |
994 | addr->type = SOCKET_ADDRESS_TYPE_UNIX; |
995 | addr->u.q_unix.path = g_strdup(str + 5); | |
101f9cbc PB |
996 | } |
997 | } else if (strstart(str, "fd:", NULL)) { | |
998 | if (str[3] == '\0') { | |
312fd5f2 | 999 | error_setg(errp, "invalid file descriptor address"); |
101f9cbc PB |
1000 | goto fail; |
1001 | } else { | |
bd269ebc MA |
1002 | addr->type = SOCKET_ADDRESS_TYPE_FD; |
1003 | addr->u.fd.str = g_strdup(str + 3); | |
101f9cbc | 1004 | } |
6a02c806 | 1005 | } else if (strstart(str, "vsock:", NULL)) { |
bd269ebc MA |
1006 | addr->type = SOCKET_ADDRESS_TYPE_VSOCK; |
1007 | if (vsock_parse(&addr->u.vsock, str + strlen("vsock:"), errp)) { | |
6a02c806 SH |
1008 | goto fail; |
1009 | } | |
101f9cbc | 1010 | } else { |
bd269ebc MA |
1011 | addr->type = SOCKET_ADDRESS_TYPE_INET; |
1012 | if (inet_parse(&addr->u.inet, str, errp)) { | |
101f9cbc PB |
1013 | goto fail; |
1014 | } | |
1015 | } | |
1016 | return addr; | |
1017 | ||
1018 | fail: | |
bd269ebc | 1019 | qapi_free_SocketAddress(addr); |
101f9cbc PB |
1020 | return NULL; |
1021 | } | |
1022 | ||
b2587932 | 1023 | int socket_connect(SocketAddress *addr, Error **errp) |
101f9cbc | 1024 | { |
101f9cbc PB |
1025 | int fd; |
1026 | ||
2d32adda | 1027 | switch (addr->type) { |
bd269ebc | 1028 | case SOCKET_ADDRESS_TYPE_INET: |
b2587932 | 1029 | fd = inet_connect_saddr(&addr->u.inet, errp); |
101f9cbc PB |
1030 | break; |
1031 | ||
bd269ebc | 1032 | case SOCKET_ADDRESS_TYPE_UNIX: |
b2587932 | 1033 | fd = unix_connect_saddr(&addr->u.q_unix, errp); |
101f9cbc PB |
1034 | break; |
1035 | ||
bd269ebc MA |
1036 | case SOCKET_ADDRESS_TYPE_FD: |
1037 | fd = monitor_get_fd(cur_mon, addr->u.fd.str, errp); | |
101f9cbc PB |
1038 | break; |
1039 | ||
bd269ebc | 1040 | case SOCKET_ADDRESS_TYPE_VSOCK: |
b2587932 | 1041 | fd = vsock_connect_saddr(&addr->u.vsock, errp); |
6a02c806 SH |
1042 | break; |
1043 | ||
101f9cbc PB |
1044 | default: |
1045 | abort(); | |
1046 | } | |
101f9cbc PB |
1047 | return fd; |
1048 | } | |
1049 | ||
bd269ebc | 1050 | int socket_listen(SocketAddress *addr, Error **errp) |
101f9cbc | 1051 | { |
101f9cbc PB |
1052 | int fd; |
1053 | ||
2d32adda | 1054 | switch (addr->type) { |
bd269ebc MA |
1055 | case SOCKET_ADDRESS_TYPE_INET: |
1056 | fd = inet_listen_saddr(&addr->u.inet, 0, false, errp); | |
101f9cbc PB |
1057 | break; |
1058 | ||
bd269ebc MA |
1059 | case SOCKET_ADDRESS_TYPE_UNIX: |
1060 | fd = unix_listen_saddr(&addr->u.q_unix, false, errp); | |
101f9cbc PB |
1061 | break; |
1062 | ||
bd269ebc MA |
1063 | case SOCKET_ADDRESS_TYPE_FD: |
1064 | fd = monitor_get_fd(cur_mon, addr->u.fd.str, errp); | |
101f9cbc PB |
1065 | break; |
1066 | ||
bd269ebc MA |
1067 | case SOCKET_ADDRESS_TYPE_VSOCK: |
1068 | fd = vsock_listen_saddr(&addr->u.vsock, errp); | |
6a02c806 SH |
1069 | break; |
1070 | ||
101f9cbc PB |
1071 | default: |
1072 | abort(); | |
1073 | } | |
101f9cbc PB |
1074 | return fd; |
1075 | } | |
1076 | ||
74b6ce43 MAL |
1077 | void socket_listen_cleanup(int fd, Error **errp) |
1078 | { | |
bd269ebc | 1079 | SocketAddress *addr; |
74b6ce43 MAL |
1080 | |
1081 | addr = socket_local_address(fd, errp); | |
1082 | ||
bd269ebc MA |
1083 | if (addr->type == SOCKET_ADDRESS_TYPE_UNIX |
1084 | && addr->u.q_unix.path) { | |
1085 | if (unlink(addr->u.q_unix.path) < 0 && errno != ENOENT) { | |
74b6ce43 MAL |
1086 | error_setg_errno(errp, errno, |
1087 | "Failed to unlink socket %s", | |
bd269ebc | 1088 | addr->u.q_unix.path); |
74b6ce43 MAL |
1089 | } |
1090 | } | |
1091 | ||
bd269ebc | 1092 | qapi_free_SocketAddress(addr); |
74b6ce43 MAL |
1093 | } |
1094 | ||
bd269ebc | 1095 | int socket_dgram(SocketAddress *remote, SocketAddress *local, Error **errp) |
3ecc059d | 1096 | { |
3ecc059d GH |
1097 | int fd; |
1098 | ||
ca0b64e5 | 1099 | /* |
bd269ebc | 1100 | * TODO SOCKET_ADDRESS_TYPE_FD when fd is AF_INET or AF_INET6 |
ca0b64e5 MA |
1101 | * (although other address families can do SOCK_DGRAM, too) |
1102 | */ | |
2d32adda | 1103 | switch (remote->type) { |
bd269ebc MA |
1104 | case SOCKET_ADDRESS_TYPE_INET: |
1105 | fd = inet_dgram_saddr(&remote->u.inet, | |
1106 | local ? &local->u.inet : NULL, errp); | |
3ecc059d GH |
1107 | break; |
1108 | ||
1109 | default: | |
1110 | error_setg(errp, "socket type unsupported for datagram"); | |
7a5b6af1 | 1111 | fd = -1; |
3ecc059d | 1112 | } |
3ecc059d GH |
1113 | return fd; |
1114 | } | |
17c55dec DB |
1115 | |
1116 | ||
bd269ebc | 1117 | static SocketAddress * |
17c55dec DB |
1118 | socket_sockaddr_to_address_inet(struct sockaddr_storage *sa, |
1119 | socklen_t salen, | |
1120 | Error **errp) | |
1121 | { | |
1122 | char host[NI_MAXHOST]; | |
1123 | char serv[NI_MAXSERV]; | |
bd269ebc | 1124 | SocketAddress *addr; |
0399293e | 1125 | InetSocketAddress *inet; |
17c55dec DB |
1126 | int ret; |
1127 | ||
1128 | ret = getnameinfo((struct sockaddr *)sa, salen, | |
1129 | host, sizeof(host), | |
1130 | serv, sizeof(serv), | |
1131 | NI_NUMERICHOST | NI_NUMERICSERV); | |
1132 | if (ret != 0) { | |
1133 | error_setg(errp, "Cannot format numeric socket address: %s", | |
1134 | gai_strerror(ret)); | |
1135 | return NULL; | |
1136 | } | |
1137 | ||
bd269ebc MA |
1138 | addr = g_new0(SocketAddress, 1); |
1139 | addr->type = SOCKET_ADDRESS_TYPE_INET; | |
1140 | inet = &addr->u.inet; | |
0399293e EB |
1141 | inet->host = g_strdup(host); |
1142 | inet->port = g_strdup(serv); | |
17c55dec | 1143 | if (sa->ss_family == AF_INET) { |
0399293e | 1144 | inet->has_ipv4 = inet->ipv4 = true; |
17c55dec | 1145 | } else { |
0399293e | 1146 | inet->has_ipv6 = inet->ipv6 = true; |
17c55dec DB |
1147 | } |
1148 | ||
1149 | return addr; | |
1150 | } | |
1151 | ||
1152 | ||
1153 | #ifndef WIN32 | |
bd269ebc | 1154 | static SocketAddress * |
17c55dec DB |
1155 | socket_sockaddr_to_address_unix(struct sockaddr_storage *sa, |
1156 | socklen_t salen, | |
1157 | Error **errp) | |
1158 | { | |
bd269ebc | 1159 | SocketAddress *addr; |
17c55dec DB |
1160 | struct sockaddr_un *su = (struct sockaddr_un *)sa; |
1161 | ||
bd269ebc MA |
1162 | addr = g_new0(SocketAddress, 1); |
1163 | addr->type = SOCKET_ADDRESS_TYPE_UNIX; | |
17c55dec | 1164 | if (su->sun_path[0]) { |
bd269ebc | 1165 | addr->u.q_unix.path = g_strndup(su->sun_path, sizeof(su->sun_path)); |
17c55dec DB |
1166 | } |
1167 | ||
1168 | return addr; | |
1169 | } | |
1170 | #endif /* WIN32 */ | |
1171 | ||
6a02c806 | 1172 | #ifdef CONFIG_AF_VSOCK |
bd269ebc | 1173 | static SocketAddress * |
6a02c806 SH |
1174 | socket_sockaddr_to_address_vsock(struct sockaddr_storage *sa, |
1175 | socklen_t salen, | |
1176 | Error **errp) | |
1177 | { | |
bd269ebc | 1178 | SocketAddress *addr; |
6a02c806 SH |
1179 | VsockSocketAddress *vaddr; |
1180 | struct sockaddr_vm *svm = (struct sockaddr_vm *)sa; | |
1181 | ||
bd269ebc MA |
1182 | addr = g_new0(SocketAddress, 1); |
1183 | addr->type = SOCKET_ADDRESS_TYPE_VSOCK; | |
1184 | vaddr = &addr->u.vsock; | |
6a02c806 SH |
1185 | vaddr->cid = g_strdup_printf("%u", svm->svm_cid); |
1186 | vaddr->port = g_strdup_printf("%u", svm->svm_port); | |
1187 | ||
1188 | return addr; | |
1189 | } | |
1190 | #endif /* CONFIG_AF_VSOCK */ | |
1191 | ||
bd269ebc | 1192 | SocketAddress * |
17c55dec DB |
1193 | socket_sockaddr_to_address(struct sockaddr_storage *sa, |
1194 | socklen_t salen, | |
1195 | Error **errp) | |
1196 | { | |
1197 | switch (sa->ss_family) { | |
1198 | case AF_INET: | |
1199 | case AF_INET6: | |
1200 | return socket_sockaddr_to_address_inet(sa, salen, errp); | |
1201 | ||
1202 | #ifndef WIN32 | |
1203 | case AF_UNIX: | |
1204 | return socket_sockaddr_to_address_unix(sa, salen, errp); | |
1205 | #endif /* WIN32 */ | |
1206 | ||
6a02c806 SH |
1207 | #ifdef CONFIG_AF_VSOCK |
1208 | case AF_VSOCK: | |
1209 | return socket_sockaddr_to_address_vsock(sa, salen, errp); | |
1210 | #endif | |
1211 | ||
17c55dec DB |
1212 | default: |
1213 | error_setg(errp, "socket family %d unsupported", | |
1214 | sa->ss_family); | |
1215 | return NULL; | |
1216 | } | |
1217 | return 0; | |
1218 | } | |
1219 | ||
1220 | ||
bd269ebc | 1221 | SocketAddress *socket_local_address(int fd, Error **errp) |
17c55dec DB |
1222 | { |
1223 | struct sockaddr_storage ss; | |
1224 | socklen_t sslen = sizeof(ss); | |
1225 | ||
1226 | if (getsockname(fd, (struct sockaddr *)&ss, &sslen) < 0) { | |
b16a44e1 | 1227 | error_setg_errno(errp, errno, "%s", |
17c55dec DB |
1228 | "Unable to query local socket address"); |
1229 | return NULL; | |
1230 | } | |
1231 | ||
1232 | return socket_sockaddr_to_address(&ss, sslen, errp); | |
1233 | } | |
1234 | ||
1235 | ||
bd269ebc | 1236 | SocketAddress *socket_remote_address(int fd, Error **errp) |
17c55dec DB |
1237 | { |
1238 | struct sockaddr_storage ss; | |
1239 | socklen_t sslen = sizeof(ss); | |
1240 | ||
1241 | if (getpeername(fd, (struct sockaddr *)&ss, &sslen) < 0) { | |
b16a44e1 | 1242 | error_setg_errno(errp, errno, "%s", |
17c55dec DB |
1243 | "Unable to query remote socket address"); |
1244 | return NULL; | |
1245 | } | |
1246 | ||
1247 | return socket_sockaddr_to_address(&ss, sslen, errp); | |
1248 | } | |
2a8e21c7 | 1249 | |
216411b8 | 1250 | |
bd269ebc MA |
1251 | SocketAddress *socket_address_flatten(SocketAddressLegacy *addr_legacy) |
1252 | { | |
fc0f0059 | 1253 | SocketAddress *addr; |
bd269ebc MA |
1254 | |
1255 | if (!addr_legacy) { | |
1256 | return NULL; | |
1257 | } | |
1258 | ||
fc0f0059 MA |
1259 | addr = g_new(SocketAddress, 1); |
1260 | ||
bd269ebc MA |
1261 | switch (addr_legacy->type) { |
1262 | case SOCKET_ADDRESS_LEGACY_KIND_INET: | |
1263 | addr->type = SOCKET_ADDRESS_TYPE_INET; | |
1264 | QAPI_CLONE_MEMBERS(InetSocketAddress, &addr->u.inet, | |
1265 | addr_legacy->u.inet.data); | |
1266 | break; | |
1267 | case SOCKET_ADDRESS_LEGACY_KIND_UNIX: | |
1268 | addr->type = SOCKET_ADDRESS_TYPE_UNIX; | |
1269 | QAPI_CLONE_MEMBERS(UnixSocketAddress, &addr->u.q_unix, | |
1270 | addr_legacy->u.q_unix.data); | |
1271 | break; | |
1272 | case SOCKET_ADDRESS_LEGACY_KIND_VSOCK: | |
1273 | addr->type = SOCKET_ADDRESS_TYPE_VSOCK; | |
1274 | QAPI_CLONE_MEMBERS(VsockSocketAddress, &addr->u.vsock, | |
1275 | addr_legacy->u.vsock.data); | |
1276 | break; | |
1277 | case SOCKET_ADDRESS_LEGACY_KIND_FD: | |
1278 | addr->type = SOCKET_ADDRESS_TYPE_FD; | |
1279 | QAPI_CLONE_MEMBERS(String, &addr->u.fd, addr_legacy->u.fd.data); | |
1280 | break; | |
1281 | default: | |
1282 | abort(); | |
1283 | } | |
1284 | ||
1285 | return addr; | |
1286 | } |