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Commit | Line | Data |
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305b0eb2 AL |
1 | /* |
2 | * inet and unix socket functions for qemu | |
3 | * | |
4 | * (c) 2008 Gerd Hoffmann <kraxel@redhat.com> | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation; under version 2 of the License. | |
9 | * | |
10 | * This program is distributed in the hope that it will be useful, | |
11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
13 | * GNU General Public License for more details. | |
e6d91ab6 PB |
14 | * |
15 | * Contributions after 2012-01-13 are licensed under the terms of the | |
16 | * GNU GPL, version 2 or (at your option) any later version. | |
305b0eb2 | 17 | */ |
aafd7584 | 18 | #include "qemu/osdep.h" |
d247d25f | 19 | |
6a02c806 SH |
20 | #ifdef CONFIG_AF_VSOCK |
21 | #include <linux/vm_sockets.h> | |
22 | #endif /* CONFIG_AF_VSOCK */ | |
23 | ||
83c9089e | 24 | #include "monitor/monitor.h" |
bd269ebc | 25 | #include "qapi/clone-visitor.h" |
da34e65c | 26 | #include "qapi/error.h" |
9af23989 | 27 | #include "qapi/qapi-visit-sockets.h" |
1de7afc9 | 28 | #include "qemu/sockets.h" |
1de7afc9 | 29 | #include "qemu/main-loop.h" |
b3db211f DB |
30 | #include "qapi/qobject-input-visitor.h" |
31 | #include "qapi/qobject-output-visitor.h" | |
f348b6d1 | 32 | #include "qemu/cutils.h" |
d247d25f AL |
33 | |
34 | #ifndef AI_ADDRCONFIG | |
35 | # define AI_ADDRCONFIG 0 | |
36 | #endif | |
340849a9 | 37 | |
3de3d698 WB |
38 | #ifndef AI_V4MAPPED |
39 | # define AI_V4MAPPED 0 | |
40 | #endif | |
d247d25f | 41 | |
6979a813 DB |
42 | #ifndef AI_NUMERICSERV |
43 | # define AI_NUMERICSERV 0 | |
44 | #endif | |
45 | ||
2af2bf67 | 46 | |
d247d25f AL |
47 | static int inet_getport(struct addrinfo *e) |
48 | { | |
49 | struct sockaddr_in *i4; | |
50 | struct sockaddr_in6 *i6; | |
51 | ||
52 | switch (e->ai_family) { | |
53 | case PF_INET6: | |
54 | i6 = (void*)e->ai_addr; | |
55 | return ntohs(i6->sin6_port); | |
56 | case PF_INET: | |
57 | i4 = (void*)e->ai_addr; | |
58 | return ntohs(i4->sin_port); | |
59 | default: | |
60 | return 0; | |
61 | } | |
62 | } | |
63 | ||
64 | static void inet_setport(struct addrinfo *e, int port) | |
65 | { | |
66 | struct sockaddr_in *i4; | |
67 | struct sockaddr_in6 *i6; | |
68 | ||
69 | switch (e->ai_family) { | |
70 | case PF_INET6: | |
71 | i6 = (void*)e->ai_addr; | |
72 | i6->sin6_port = htons(port); | |
73 | break; | |
74 | case PF_INET: | |
75 | i4 = (void*)e->ai_addr; | |
76 | i4->sin_port = htons(port); | |
77 | break; | |
78 | } | |
79 | } | |
80 | ||
a589569f WX |
81 | NetworkAddressFamily inet_netfamily(int family) |
82 | { | |
83 | switch (family) { | |
84 | case PF_INET6: return NETWORK_ADDRESS_FAMILY_IPV6; | |
85 | case PF_INET: return NETWORK_ADDRESS_FAMILY_IPV4; | |
86 | case PF_UNIX: return NETWORK_ADDRESS_FAMILY_UNIX; | |
6a02c806 SH |
87 | #ifdef CONFIG_AF_VSOCK |
88 | case PF_VSOCK: return NETWORK_ADDRESS_FAMILY_VSOCK; | |
89 | #endif /* CONFIG_AF_VSOCK */ | |
a589569f WX |
90 | } |
91 | return NETWORK_ADDRESS_FAMILY_UNKNOWN; | |
92 | } | |
93 | ||
1856835d DB |
94 | /* |
95 | * Matrix we're trying to apply | |
96 | * | |
97 | * ipv4 ipv6 family | |
98 | * - - PF_UNSPEC | |
99 | * - f PF_INET | |
100 | * - t PF_INET6 | |
101 | * f - PF_INET6 | |
102 | * f f <error> | |
103 | * f t PF_INET6 | |
104 | * t - PF_INET | |
105 | * t f PF_INET | |
94bc0d19 | 106 | * t t PF_INET6/PF_UNSPEC |
1856835d | 107 | * |
d43eda3d | 108 | * NB, this matrix is only about getting the necessary results |
1856835d DB |
109 | * from getaddrinfo(). Some of the cases require further work |
110 | * after reading results from getaddrinfo in order to fully | |
94bc0d19 DB |
111 | * apply the logic the end user wants. |
112 | * | |
113 | * In the first and last cases, we must set IPV6_V6ONLY=0 | |
114 | * when binding, to allow a single listener to potentially | |
115 | * accept both IPv4+6 addresses. | |
1856835d | 116 | */ |
c1b412f1 DB |
117 | int inet_ai_family_from_address(InetSocketAddress *addr, |
118 | Error **errp) | |
1856835d DB |
119 | { |
120 | if (addr->has_ipv6 && addr->has_ipv4 && | |
121 | !addr->ipv6 && !addr->ipv4) { | |
122 | error_setg(errp, "Cannot disable IPv4 and IPv6 at same time"); | |
123 | return PF_UNSPEC; | |
124 | } | |
94bc0d19 DB |
125 | if ((addr->has_ipv6 && addr->ipv6) && (addr->has_ipv4 && addr->ipv4)) { |
126 | /* | |
127 | * Some backends can only do a single listener. In that case | |
128 | * we want empty hostname to resolve to "::" and then use the | |
129 | * flag IPV6_V6ONLY==0 to get both protocols on 1 socket. This | |
130 | * doesn't work for addresses other than "", so they're just | |
131 | * inevitably broken until multiple listeners can be used, | |
132 | * and thus we honour getaddrinfo automatic protocol detection | |
133 | * Once all backends do multi-listener, remove the PF_INET6 | |
134 | * branch entirely. | |
135 | */ | |
136 | if (!addr->host || g_str_equal(addr->host, "")) { | |
137 | return PF_INET6; | |
138 | } else { | |
139 | return PF_UNSPEC; | |
140 | } | |
141 | } | |
1856835d DB |
142 | if ((addr->has_ipv6 && addr->ipv6) || (addr->has_ipv4 && !addr->ipv4)) { |
143 | return PF_INET6; | |
144 | } | |
145 | if ((addr->has_ipv4 && addr->ipv4) || (addr->has_ipv6 && !addr->ipv6)) { | |
146 | return PF_INET; | |
147 | } | |
148 | return PF_UNSPEC; | |
149 | } | |
150 | ||
39f80521 KO |
151 | static int create_fast_reuse_socket(struct addrinfo *e) |
152 | { | |
153 | int slisten = qemu_socket(e->ai_family, e->ai_socktype, e->ai_protocol); | |
154 | if (slisten < 0) { | |
155 | return -1; | |
156 | } | |
157 | socket_set_fast_reuse(slisten); | |
158 | return slisten; | |
159 | } | |
160 | ||
89382c3d KO |
161 | static int try_bind(int socket, InetSocketAddress *saddr, struct addrinfo *e) |
162 | { | |
163 | #ifndef IPV6_V6ONLY | |
164 | return bind(socket, e->ai_addr, e->ai_addrlen); | |
165 | #else | |
166 | /* | |
167 | * Deals with first & last cases in matrix in comment | |
168 | * for inet_ai_family_from_address(). | |
169 | */ | |
170 | int v6only = | |
171 | ((!saddr->has_ipv4 && !saddr->has_ipv6) || | |
172 | (saddr->has_ipv4 && saddr->ipv4 && | |
173 | saddr->has_ipv6 && saddr->ipv6)) ? 0 : 1; | |
174 | int stat; | |
175 | ||
176 | rebind: | |
177 | if (e->ai_family == PF_INET6) { | |
178 | qemu_setsockopt(socket, IPPROTO_IPV6, IPV6_V6ONLY, &v6only, | |
179 | sizeof(v6only)); | |
180 | } | |
181 | ||
182 | stat = bind(socket, e->ai_addr, e->ai_addrlen); | |
183 | if (!stat) { | |
184 | return 0; | |
185 | } | |
186 | ||
187 | /* If we got EADDRINUSE from an IPv6 bind & v6only is unset, | |
188 | * it could be that the IPv4 port is already claimed, so retry | |
189 | * with v6only set | |
190 | */ | |
191 | if (e->ai_family == PF_INET6 && errno == EADDRINUSE && !v6only) { | |
192 | v6only = 1; | |
193 | goto rebind; | |
194 | } | |
195 | return stat; | |
196 | #endif | |
197 | } | |
198 | ||
1856835d DB |
199 | static int inet_listen_saddr(InetSocketAddress *saddr, |
200 | int port_offset, | |
1856835d | 201 | Error **errp) |
d247d25f AL |
202 | { |
203 | struct addrinfo ai,*res,*e; | |
d247d25f AL |
204 | char port[33]; |
205 | char uaddr[INET6_ADDRSTRLEN+1]; | |
206 | char uport[33]; | |
9cf961bb | 207 | int rc, port_min, port_max, p; |
10a7b7e6 | 208 | int slisten = -1; |
9cf961bb KO |
209 | int saved_errno = 0; |
210 | bool socket_created = false; | |
1856835d | 211 | Error *err = NULL; |
d247d25f AL |
212 | |
213 | memset(&ai,0, sizeof(ai)); | |
3de3d698 | 214 | ai.ai_flags = AI_PASSIVE; |
6979a813 DB |
215 | if (saddr->has_numeric && saddr->numeric) { |
216 | ai.ai_flags |= AI_NUMERICHOST | AI_NUMERICSERV; | |
217 | } | |
1856835d | 218 | ai.ai_family = inet_ai_family_from_address(saddr, &err); |
e5bc776f | 219 | ai.ai_socktype = SOCK_STREAM; |
d247d25f | 220 | |
1856835d DB |
221 | if (err) { |
222 | error_propagate(errp, err); | |
223 | return -1; | |
224 | } | |
225 | ||
226 | if (saddr->host == NULL) { | |
0983f5e6 | 227 | error_setg(errp, "host not specified"); |
e5bc776f | 228 | return -1; |
d247d25f | 229 | } |
1856835d DB |
230 | if (saddr->port != NULL) { |
231 | pstrcpy(port, sizeof(port), saddr->port); | |
0983f5e6 DB |
232 | } else { |
233 | port[0] = '\0'; | |
234 | } | |
d247d25f AL |
235 | |
236 | /* lookup */ | |
8bc89127 GH |
237 | if (port_offset) { |
238 | unsigned long long baseport; | |
0983f5e6 DB |
239 | if (strlen(port) == 0) { |
240 | error_setg(errp, "port not specified"); | |
241 | return -1; | |
242 | } | |
8bc89127 GH |
243 | if (parse_uint_full(port, &baseport, 10) < 0) { |
244 | error_setg(errp, "can't convert to a number: %s", port); | |
245 | return -1; | |
246 | } | |
247 | if (baseport > 65535 || | |
248 | baseport + port_offset > 65535) { | |
249 | error_setg(errp, "port %s out of range", port); | |
250 | return -1; | |
251 | } | |
252 | snprintf(port, sizeof(port), "%d", (int)baseport + port_offset); | |
253 | } | |
1856835d | 254 | rc = getaddrinfo(strlen(saddr->host) ? saddr->host : NULL, |
0983f5e6 | 255 | strlen(port) ? port : NULL, &ai, &res); |
d247d25f | 256 | if (rc != 0) { |
1856835d DB |
257 | error_setg(errp, "address resolution failed for %s:%s: %s", |
258 | saddr->host, port, gai_strerror(rc)); | |
d247d25f AL |
259 | return -1; |
260 | } | |
d247d25f | 261 | |
9cf961bb | 262 | /* create socket + bind/listen */ |
d247d25f | 263 | for (e = res; e != NULL; e = e->ai_next) { |
39b6efc8 VS |
264 | getnameinfo((struct sockaddr*)e->ai_addr,e->ai_addrlen, |
265 | uaddr,INET6_ADDRSTRLEN,uport,32, | |
266 | NI_NUMERICHOST | NI_NUMERICSERV); | |
39f80521 | 267 | |
877691f9 | 268 | port_min = inet_getport(e); |
1856835d | 269 | port_max = saddr->has_to ? saddr->to + port_offset : port_min; |
877691f9 MA |
270 | for (p = port_min; p <= port_max; p++) { |
271 | inet_setport(e, p); | |
10a7b7e6 DB |
272 | |
273 | slisten = create_fast_reuse_socket(e); | |
274 | if (slisten < 0) { | |
275 | /* First time we expect we might fail to create the socket | |
276 | * eg if 'e' has AF_INET6 but ipv6 kmod is not loaded. | |
277 | * Later iterations should always succeed if first iteration | |
278 | * worked though, so treat that as fatal. | |
279 | */ | |
280 | if (p == port_min) { | |
9cf961bb KO |
281 | continue; |
282 | } else { | |
10a7b7e6 DB |
283 | error_setg_errno(errp, errno, |
284 | "Failed to recreate failed listening socket"); | |
9cf961bb | 285 | goto listen_failed; |
029409e5 | 286 | } |
d247d25f | 287 | } |
10a7b7e6 DB |
288 | socket_created = true; |
289 | ||
290 | rc = try_bind(slisten, saddr, e); | |
291 | if (rc < 0) { | |
292 | if (errno != EADDRINUSE) { | |
293 | error_setg_errno(errp, errno, "Failed to bind socket"); | |
294 | goto listen_failed; | |
295 | } | |
296 | } else { | |
297 | if (!listen(slisten, 1)) { | |
298 | goto listen_ok; | |
299 | } | |
300 | if (errno != EADDRINUSE) { | |
301 | error_setg_errno(errp, errno, "Failed to listen on socket"); | |
302 | goto listen_failed; | |
303 | } | |
9cf961bb KO |
304 | } |
305 | /* Someone else managed to bind to the same port and beat us | |
306 | * to listen on it! Socket semantics does not allow us to | |
307 | * recover from this situation, so we need to recreate the | |
308 | * socket to allow bind attempts for subsequent ports: | |
309 | */ | |
310 | closesocket(slisten); | |
10a7b7e6 | 311 | slisten = -1; |
d247d25f | 312 | } |
9cf961bb KO |
313 | } |
314 | error_setg_errno(errp, errno, | |
315 | socket_created ? | |
316 | "Failed to find an available port" : | |
317 | "Failed to create a socket"); | |
318 | listen_failed: | |
319 | saved_errno = errno; | |
320 | if (slisten >= 0) { | |
d247d25f AL |
321 | closesocket(slisten); |
322 | } | |
d247d25f | 323 | freeaddrinfo(res); |
9cf961bb | 324 | errno = saved_errno; |
d247d25f AL |
325 | return -1; |
326 | ||
9cf961bb | 327 | listen_ok: |
d247d25f AL |
328 | freeaddrinfo(res); |
329 | return slisten; | |
330 | } | |
331 | ||
05bc1d8a MT |
332 | #ifdef _WIN32 |
333 | #define QEMU_SOCKET_RC_INPROGRESS(rc) \ | |
334 | ((rc) == -EINPROGRESS || (rc) == -EWOULDBLOCK || (rc) == -WSAEALREADY) | |
335 | #else | |
336 | #define QEMU_SOCKET_RC_INPROGRESS(rc) \ | |
337 | ((rc) == -EINPROGRESS) | |
338 | #endif | |
339 | ||
b2587932 | 340 | static int inet_connect_addr(struct addrinfo *addr, Error **errp); |
233aa5c2 | 341 | |
b2587932 | 342 | static int inet_connect_addr(struct addrinfo *addr, Error **errp) |
233aa5c2 OW |
343 | { |
344 | int sock, rc; | |
345 | ||
05bc1d8a MT |
346 | sock = qemu_socket(addr->ai_family, addr->ai_socktype, addr->ai_protocol); |
347 | if (sock < 0) { | |
235256a2 | 348 | error_setg_errno(errp, errno, "Failed to create socket"); |
05bc1d8a MT |
349 | return -1; |
350 | } | |
04fd1c78 | 351 | socket_set_fast_reuse(sock); |
b2587932 | 352 | |
05bc1d8a MT |
353 | /* connect to peer */ |
354 | do { | |
355 | rc = 0; | |
356 | if (connect(sock, addr->ai_addr, addr->ai_addrlen) < 0) { | |
b16a44e1 | 357 | rc = -errno; |
05bc1d8a MT |
358 | } |
359 | } while (rc == -EINTR); | |
360 | ||
b2587932 | 361 | if (rc < 0) { |
235256a2 | 362 | error_setg_errno(errp, errno, "Failed to connect socket"); |
05bc1d8a MT |
363 | closesocket(sock); |
364 | return -1; | |
365 | } | |
b2587932 | 366 | |
05bc1d8a MT |
367 | return sock; |
368 | } | |
369 | ||
2942e420 DB |
370 | static struct addrinfo *inet_parse_connect_saddr(InetSocketAddress *saddr, |
371 | Error **errp) | |
05bc1d8a MT |
372 | { |
373 | struct addrinfo ai, *res; | |
374 | int rc; | |
2942e420 | 375 | Error *err = NULL; |
340849a9 | 376 | static int useV4Mapped = 1; |
d247d25f | 377 | |
05bc1d8a | 378 | memset(&ai, 0, sizeof(ai)); |
233aa5c2 | 379 | |
340849a9 DB |
380 | ai.ai_flags = AI_CANONNAME | AI_ADDRCONFIG; |
381 | if (atomic_read(&useV4Mapped)) { | |
382 | ai.ai_flags |= AI_V4MAPPED; | |
383 | } | |
2942e420 | 384 | ai.ai_family = inet_ai_family_from_address(saddr, &err); |
f4c94c7c | 385 | ai.ai_socktype = SOCK_STREAM; |
d247d25f | 386 | |
2942e420 DB |
387 | if (err) { |
388 | error_propagate(errp, err); | |
05bc1d8a | 389 | return NULL; |
d247d25f AL |
390 | } |
391 | ||
2942e420 DB |
392 | if (saddr->host == NULL || saddr->port == NULL) { |
393 | error_setg(errp, "host and/or port not specified"); | |
394 | return NULL; | |
05bc1d8a | 395 | } |
d247d25f AL |
396 | |
397 | /* lookup */ | |
2942e420 | 398 | rc = getaddrinfo(saddr->host, saddr->port, &ai, &res); |
340849a9 DB |
399 | |
400 | /* At least FreeBSD and OS-X 10.6 declare AI_V4MAPPED but | |
401 | * then don't implement it in their getaddrinfo(). Detect | |
402 | * this and retry without the flag since that's preferrable | |
403 | * to a fatal error | |
404 | */ | |
405 | if (rc == EAI_BADFLAGS && | |
406 | (ai.ai_flags & AI_V4MAPPED)) { | |
407 | atomic_set(&useV4Mapped, 0); | |
408 | ai.ai_flags &= ~AI_V4MAPPED; | |
409 | rc = getaddrinfo(saddr->host, saddr->port, &ai, &res); | |
410 | } | |
05bc1d8a | 411 | if (rc != 0) { |
2942e420 DB |
412 | error_setg(errp, "address resolution failed for %s:%s: %s", |
413 | saddr->host, saddr->port, gai_strerror(rc)); | |
05bc1d8a MT |
414 | return NULL; |
415 | } | |
416 | return res; | |
417 | } | |
418 | ||
5db5f44c OW |
419 | /** |
420 | * Create a socket and connect it to an address. | |
421 | * | |
2942e420 | 422 | * @saddr: Inet socket address specification |
5db5f44c OW |
423 | * @errp: set on error |
424 | * | |
425 | * Returns: -1 on error, file descriptor on success. | |
426 | */ | |
b2587932 | 427 | int inet_connect_saddr(InetSocketAddress *saddr, Error **errp) |
05bc1d8a | 428 | { |
3f9286b7 | 429 | Error *local_err = NULL; |
05bc1d8a MT |
430 | struct addrinfo *res, *e; |
431 | int sock = -1; | |
05bc1d8a | 432 | |
2942e420 | 433 | res = inet_parse_connect_saddr(saddr, errp); |
05bc1d8a MT |
434 | if (!res) { |
435 | return -1; | |
436 | } | |
437 | ||
d247d25f | 438 | for (e = res; e != NULL; e = e->ai_next) { |
3f9286b7 MA |
439 | error_free(local_err); |
440 | local_err = NULL; | |
b2587932 | 441 | sock = inet_connect_addr(e, &local_err); |
3f9286b7 | 442 | if (sock >= 0) { |
05bc1d8a | 443 | break; |
a6ba35b3 | 444 | } |
d247d25f | 445 | } |
3f9286b7 MA |
446 | |
447 | if (sock < 0) { | |
448 | error_propagate(errp, local_err); | |
3f9286b7 | 449 | } |
b2587932 | 450 | |
d247d25f | 451 | freeaddrinfo(res); |
05bc1d8a | 452 | return sock; |
d247d25f AL |
453 | } |
454 | ||
8b39910e DB |
455 | static int inet_dgram_saddr(InetSocketAddress *sraddr, |
456 | InetSocketAddress *sladdr, | |
457 | Error **errp) | |
7e1b35b4 GH |
458 | { |
459 | struct addrinfo ai, *peer = NULL, *local = NULL; | |
460 | const char *addr; | |
461 | const char *port; | |
7e1b35b4 | 462 | int sock = -1, rc; |
8b39910e | 463 | Error *err = NULL; |
7e1b35b4 GH |
464 | |
465 | /* lookup peer addr */ | |
466 | memset(&ai,0, sizeof(ai)); | |
3de3d698 | 467 | ai.ai_flags = AI_CANONNAME | AI_V4MAPPED | AI_ADDRCONFIG; |
8b39910e | 468 | ai.ai_family = inet_ai_family_from_address(sraddr, &err); |
7e1b35b4 GH |
469 | ai.ai_socktype = SOCK_DGRAM; |
470 | ||
8b39910e DB |
471 | if (err) { |
472 | error_propagate(errp, err); | |
58c652c0 | 473 | goto err; |
8b39910e DB |
474 | } |
475 | ||
476 | addr = sraddr->host; | |
477 | port = sraddr->port; | |
7e1b35b4 GH |
478 | if (addr == NULL || strlen(addr) == 0) { |
479 | addr = "localhost"; | |
480 | } | |
481 | if (port == NULL || strlen(port) == 0) { | |
4f085c82 | 482 | error_setg(errp, "remote port not specified"); |
58c652c0 | 483 | goto err; |
7e1b35b4 GH |
484 | } |
485 | ||
9cd1883c | 486 | if ((rc = getaddrinfo(addr, port, &ai, &peer)) != 0) { |
4f085c82 PB |
487 | error_setg(errp, "address resolution failed for %s:%s: %s", addr, port, |
488 | gai_strerror(rc)); | |
26015051 | 489 | goto err; |
7e1b35b4 | 490 | } |
7e1b35b4 GH |
491 | |
492 | /* lookup local addr */ | |
493 | memset(&ai,0, sizeof(ai)); | |
494 | ai.ai_flags = AI_PASSIVE; | |
495 | ai.ai_family = peer->ai_family; | |
496 | ai.ai_socktype = SOCK_DGRAM; | |
497 | ||
8b39910e DB |
498 | if (sladdr) { |
499 | addr = sladdr->host; | |
500 | port = sladdr->port; | |
501 | if (addr == NULL || strlen(addr) == 0) { | |
502 | addr = NULL; | |
503 | } | |
504 | if (!port || strlen(port) == 0) { | |
505 | port = "0"; | |
506 | } | |
507 | } else { | |
7e1b35b4 | 508 | addr = NULL; |
7e1b35b4 | 509 | port = "0"; |
8b39910e | 510 | } |
7e1b35b4 | 511 | |
9cd1883c | 512 | if ((rc = getaddrinfo(addr, port, &ai, &local)) != 0) { |
4f085c82 PB |
513 | error_setg(errp, "address resolution failed for %s:%s: %s", addr, port, |
514 | gai_strerror(rc)); | |
39b38459 | 515 | goto err; |
7e1b35b4 | 516 | } |
7e1b35b4 GH |
517 | |
518 | /* create socket */ | |
40ff6d7e | 519 | sock = qemu_socket(peer->ai_family, peer->ai_socktype, peer->ai_protocol); |
7e1b35b4 | 520 | if (sock < 0) { |
235256a2 | 521 | error_setg_errno(errp, errno, "Failed to create socket"); |
7e1b35b4 GH |
522 | goto err; |
523 | } | |
04fd1c78 | 524 | socket_set_fast_reuse(sock); |
7e1b35b4 GH |
525 | |
526 | /* bind socket */ | |
7e1b35b4 | 527 | if (bind(sock, local->ai_addr, local->ai_addrlen) < 0) { |
235256a2 | 528 | error_setg_errno(errp, errno, "Failed to bind socket"); |
7e1b35b4 GH |
529 | goto err; |
530 | } | |
531 | ||
532 | /* connect to peer */ | |
7e1b35b4 | 533 | if (connect(sock,peer->ai_addr,peer->ai_addrlen) < 0) { |
235256a2 | 534 | error_setg_errno(errp, errno, "Failed to connect socket"); |
7e1b35b4 GH |
535 | goto err; |
536 | } | |
537 | ||
538 | freeaddrinfo(local); | |
539 | freeaddrinfo(peer); | |
540 | return sock; | |
541 | ||
542 | err: | |
26015051 | 543 | if (sock != -1) { |
7e1b35b4 | 544 | closesocket(sock); |
26015051 C |
545 | } |
546 | if (local) { | |
7e1b35b4 | 547 | freeaddrinfo(local); |
26015051 C |
548 | } |
549 | if (peer) { | |
7e1b35b4 | 550 | freeaddrinfo(peer); |
26015051 C |
551 | } |
552 | ||
7e1b35b4 GH |
553 | return -1; |
554 | } | |
555 | ||
f4c94c7c | 556 | /* compatibility wrapper */ |
3e32370a DB |
557 | static int inet_parse_flag(const char *flagname, const char *optstr, bool *val, |
558 | Error **errp) | |
559 | { | |
560 | char *end; | |
561 | size_t len; | |
562 | ||
563 | end = strstr(optstr, ","); | |
564 | if (end) { | |
565 | if (end[1] == ',') { /* Reject 'ipv6=on,,foo' */ | |
566 | error_setg(errp, "error parsing '%s' flag '%s'", flagname, optstr); | |
567 | return -1; | |
568 | } | |
569 | len = end - optstr; | |
570 | } else { | |
571 | len = strlen(optstr); | |
572 | } | |
573 | if (len == 0 || (len == 3 && strncmp(optstr, "=on", len) == 0)) { | |
574 | *val = true; | |
575 | } else if (len == 4 && strncmp(optstr, "=off", len) == 0) { | |
576 | *val = false; | |
577 | } else { | |
578 | error_setg(errp, "error parsing '%s' flag '%s'", flagname, optstr); | |
579 | return -1; | |
580 | } | |
581 | return 0; | |
582 | } | |
583 | ||
0785bd7a | 584 | int inet_parse(InetSocketAddress *addr, const char *str, Error **errp) |
f4c94c7c GH |
585 | { |
586 | const char *optstr, *h; | |
55a10996 | 587 | char host[65]; |
f4c94c7c | 588 | char port[33]; |
879e45c7 | 589 | int to; |
f4c94c7c | 590 | int pos; |
3e32370a | 591 | char *begin; |
f4c94c7c | 592 | |
0785bd7a | 593 | memset(addr, 0, sizeof(*addr)); |
879e45c7 | 594 | |
f4c94c7c GH |
595 | /* parse address */ |
596 | if (str[0] == ':') { | |
597 | /* no host given */ | |
879e45c7 | 598 | host[0] = '\0'; |
9cd1883c | 599 | if (sscanf(str, ":%32[^,]%n", port, &pos) != 1) { |
2f002c43 | 600 | error_setg(errp, "error parsing port in address '%s'", str); |
0785bd7a | 601 | return -1; |
f4c94c7c GH |
602 | } |
603 | } else if (str[0] == '[') { | |
604 | /* IPv6 addr */ | |
9cd1883c | 605 | if (sscanf(str, "[%64[^]]]:%32[^,]%n", host, port, &pos) != 2) { |
2f002c43 | 606 | error_setg(errp, "error parsing IPv6 address '%s'", str); |
0785bd7a | 607 | return -1; |
f4c94c7c | 608 | } |
f4c94c7c | 609 | } else { |
391b7b97 | 610 | /* hostname or IPv4 addr */ |
9cd1883c | 611 | if (sscanf(str, "%64[^:]:%32[^,]%n", host, port, &pos) != 2) { |
2f002c43 | 612 | error_setg(errp, "error parsing address '%s'", str); |
0785bd7a | 613 | return -1; |
f4c94c7c GH |
614 | } |
615 | } | |
879e45c7 PB |
616 | |
617 | addr->host = g_strdup(host); | |
618 | addr->port = g_strdup(port); | |
f4c94c7c GH |
619 | |
620 | /* parse options */ | |
621 | optstr = str + pos; | |
622 | h = strstr(optstr, ",to="); | |
879e45c7 | 623 | if (h) { |
1ccbc285 AP |
624 | h += 4; |
625 | if (sscanf(h, "%d%n", &to, &pos) != 1 || | |
626 | (h[pos] != '\0' && h[pos] != ',')) { | |
879e45c7 | 627 | error_setg(errp, "error parsing to= argument"); |
0785bd7a | 628 | return -1; |
879e45c7 PB |
629 | } |
630 | addr->has_to = true; | |
631 | addr->to = to; | |
632 | } | |
3e32370a DB |
633 | begin = strstr(optstr, ",ipv4"); |
634 | if (begin) { | |
635 | if (inet_parse_flag("ipv4", begin + 5, &addr->ipv4, errp) < 0) { | |
636 | return -1; | |
637 | } | |
638 | addr->has_ipv4 = true; | |
879e45c7 | 639 | } |
3e32370a DB |
640 | begin = strstr(optstr, ",ipv6"); |
641 | if (begin) { | |
642 | if (inet_parse_flag("ipv6", begin + 5, &addr->ipv6, errp) < 0) { | |
643 | return -1; | |
644 | } | |
645 | addr->has_ipv6 = true; | |
879e45c7 | 646 | } |
0785bd7a | 647 | return 0; |
879e45c7 PB |
648 | } |
649 | ||
e5bc776f | 650 | |
5db5f44c OW |
651 | /** |
652 | * Create a blocking socket and connect it to an address. | |
653 | * | |
654 | * @str: address string | |
655 | * @errp: set in case of an error | |
656 | * | |
657 | * Returns -1 in case of error, file descriptor on success | |
658 | **/ | |
659 | int inet_connect(const char *str, Error **errp) | |
f4c94c7c | 660 | { |
f4c94c7c | 661 | int sock = -1; |
0785bd7a | 662 | InetSocketAddress *addr = g_new(InetSocketAddress, 1); |
f4c94c7c | 663 | |
0785bd7a | 664 | if (!inet_parse(addr, str, errp)) { |
b2587932 | 665 | sock = inet_connect_saddr(addr, errp); |
5db5f44c | 666 | } |
0785bd7a | 667 | qapi_free_InetSocketAddress(addr); |
5db5f44c OW |
668 | return sock; |
669 | } | |
670 | ||
6a02c806 SH |
671 | #ifdef CONFIG_AF_VSOCK |
672 | static bool vsock_parse_vaddr_to_sockaddr(const VsockSocketAddress *vaddr, | |
673 | struct sockaddr_vm *svm, | |
674 | Error **errp) | |
675 | { | |
676 | unsigned long long val; | |
677 | ||
678 | memset(svm, 0, sizeof(*svm)); | |
679 | svm->svm_family = AF_VSOCK; | |
680 | ||
681 | if (parse_uint_full(vaddr->cid, &val, 10) < 0 || | |
682 | val > UINT32_MAX) { | |
683 | error_setg(errp, "Failed to parse cid '%s'", vaddr->cid); | |
684 | return false; | |
685 | } | |
686 | svm->svm_cid = val; | |
687 | ||
688 | if (parse_uint_full(vaddr->port, &val, 10) < 0 || | |
689 | val > UINT32_MAX) { | |
690 | error_setg(errp, "Failed to parse port '%s'", vaddr->port); | |
691 | return false; | |
692 | } | |
693 | svm->svm_port = val; | |
694 | ||
695 | return true; | |
696 | } | |
697 | ||
b2587932 | 698 | static int vsock_connect_addr(const struct sockaddr_vm *svm, Error **errp) |
6a02c806 SH |
699 | { |
700 | int sock, rc; | |
701 | ||
6a02c806 SH |
702 | sock = qemu_socket(AF_VSOCK, SOCK_STREAM, 0); |
703 | if (sock < 0) { | |
704 | error_setg_errno(errp, errno, "Failed to create socket"); | |
705 | return -1; | |
706 | } | |
b2587932 | 707 | |
6a02c806 SH |
708 | /* connect to peer */ |
709 | do { | |
710 | rc = 0; | |
711 | if (connect(sock, (const struct sockaddr *)svm, sizeof(*svm)) < 0) { | |
712 | rc = -errno; | |
713 | } | |
714 | } while (rc == -EINTR); | |
715 | ||
b2587932 | 716 | if (rc < 0) { |
6a02c806 SH |
717 | error_setg_errno(errp, errno, "Failed to connect socket"); |
718 | closesocket(sock); | |
719 | return -1; | |
720 | } | |
b2587932 | 721 | |
6a02c806 SH |
722 | return sock; |
723 | } | |
724 | ||
b2587932 | 725 | static int vsock_connect_saddr(VsockSocketAddress *vaddr, Error **errp) |
6a02c806 SH |
726 | { |
727 | struct sockaddr_vm svm; | |
728 | int sock = -1; | |
6a02c806 SH |
729 | |
730 | if (!vsock_parse_vaddr_to_sockaddr(vaddr, &svm, errp)) { | |
731 | return -1; | |
732 | } | |
733 | ||
b2587932 | 734 | sock = vsock_connect_addr(&svm, errp); |
6a02c806 | 735 | |
6a02c806 SH |
736 | return sock; |
737 | } | |
738 | ||
739 | static int vsock_listen_saddr(VsockSocketAddress *vaddr, | |
740 | Error **errp) | |
741 | { | |
742 | struct sockaddr_vm svm; | |
743 | int slisten; | |
744 | ||
745 | if (!vsock_parse_vaddr_to_sockaddr(vaddr, &svm, errp)) { | |
746 | return -1; | |
747 | } | |
748 | ||
749 | slisten = qemu_socket(AF_VSOCK, SOCK_STREAM, 0); | |
750 | if (slisten < 0) { | |
751 | error_setg_errno(errp, errno, "Failed to create socket"); | |
752 | return -1; | |
753 | } | |
754 | ||
755 | if (bind(slisten, (const struct sockaddr *)&svm, sizeof(svm)) != 0) { | |
756 | error_setg_errno(errp, errno, "Failed to bind socket"); | |
757 | closesocket(slisten); | |
758 | return -1; | |
759 | } | |
760 | ||
761 | if (listen(slisten, 1) != 0) { | |
762 | error_setg_errno(errp, errno, "Failed to listen on socket"); | |
763 | closesocket(slisten); | |
764 | return -1; | |
765 | } | |
766 | return slisten; | |
767 | } | |
768 | ||
4db5c619 MA |
769 | static int vsock_parse(VsockSocketAddress *addr, const char *str, |
770 | Error **errp) | |
6a02c806 | 771 | { |
6a02c806 SH |
772 | char cid[33]; |
773 | char port[33]; | |
774 | int n; | |
775 | ||
776 | if (sscanf(str, "%32[^:]:%32[^,]%n", cid, port, &n) != 2) { | |
777 | error_setg(errp, "error parsing address '%s'", str); | |
4db5c619 | 778 | return -1; |
6a02c806 SH |
779 | } |
780 | if (str[n] != '\0') { | |
781 | error_setg(errp, "trailing characters in address '%s'", str); | |
4db5c619 | 782 | return -1; |
6a02c806 SH |
783 | } |
784 | ||
6a02c806 SH |
785 | addr->cid = g_strdup(cid); |
786 | addr->port = g_strdup(port); | |
4db5c619 | 787 | return 0; |
6a02c806 SH |
788 | } |
789 | #else | |
790 | static void vsock_unsupported(Error **errp) | |
791 | { | |
792 | error_setg(errp, "socket family AF_VSOCK unsupported"); | |
793 | } | |
794 | ||
b2587932 | 795 | static int vsock_connect_saddr(VsockSocketAddress *vaddr, Error **errp) |
6a02c806 SH |
796 | { |
797 | vsock_unsupported(errp); | |
798 | return -1; | |
799 | } | |
800 | ||
801 | static int vsock_listen_saddr(VsockSocketAddress *vaddr, | |
802 | Error **errp) | |
803 | { | |
804 | vsock_unsupported(errp); | |
805 | return -1; | |
806 | } | |
807 | ||
4db5c619 MA |
808 | static int vsock_parse(VsockSocketAddress *addr, const char *str, |
809 | Error **errp) | |
6a02c806 SH |
810 | { |
811 | vsock_unsupported(errp); | |
4db5c619 | 812 | return -1; |
6a02c806 SH |
813 | } |
814 | #endif /* CONFIG_AF_VSOCK */ | |
815 | ||
d247d25f AL |
816 | #ifndef _WIN32 |
817 | ||
1856835d | 818 | static int unix_listen_saddr(UnixSocketAddress *saddr, |
1856835d | 819 | Error **errp) |
d247d25f AL |
820 | { |
821 | struct sockaddr_un un; | |
62b6adfb | 822 | int sock, fd; |
ad9579aa DB |
823 | char *pathbuf = NULL; |
824 | const char *path; | |
d247d25f | 825 | |
40ff6d7e | 826 | sock = qemu_socket(PF_UNIX, SOCK_STREAM, 0); |
d247d25f | 827 | if (sock < 0) { |
b658c53d | 828 | error_setg_errno(errp, errno, "Failed to create Unix socket"); |
39b6efc8 | 829 | return -1; |
d247d25f AL |
830 | } |
831 | ||
ad9579aa DB |
832 | if (saddr->path && saddr->path[0]) { |
833 | path = saddr->path; | |
d247d25f | 834 | } else { |
b658c53d PB |
835 | const char *tmpdir = getenv("TMPDIR"); |
836 | tmpdir = tmpdir ? tmpdir : "/tmp"; | |
ad9579aa DB |
837 | path = pathbuf = g_strdup_printf("%s/qemu-socket-XXXXXX", tmpdir); |
838 | } | |
b658c53d | 839 | |
ad9579aa DB |
840 | if (strlen(path) > sizeof(un.sun_path)) { |
841 | error_setg(errp, "UNIX socket path '%s' is too long", path); | |
842 | error_append_hint(errp, "Path must be less than %zu bytes\n", | |
843 | sizeof(un.sun_path)); | |
844 | goto err; | |
845 | } | |
846 | ||
847 | if (pathbuf != NULL) { | |
d247d25f AL |
848 | /* |
849 | * This dummy fd usage silences the mktemp() unsecure warning. | |
850 | * Using mkstemp() doesn't make things more secure here | |
851 | * though. bind() complains about existing files, so we have | |
852 | * to unlink first and thus re-open the race window. The | |
853 | * worst case possible is bind() failing, i.e. a DoS attack. | |
854 | */ | |
ad9579aa | 855 | fd = mkstemp(pathbuf); |
b658c53d PB |
856 | if (fd < 0) { |
857 | error_setg_errno(errp, errno, | |
ad9579aa | 858 | "Failed to make a temporary socket %s", pathbuf); |
b658c53d PB |
859 | goto err; |
860 | } | |
861 | close(fd); | |
d247d25f | 862 | } |
d247d25f | 863 | |
ad9579aa | 864 | if (unlink(path) < 0 && errno != ENOENT) { |
0ef705a2 | 865 | error_setg_errno(errp, errno, |
ad9579aa | 866 | "Failed to unlink socket %s", path); |
0ef705a2 CR |
867 | goto err; |
868 | } | |
ad9579aa DB |
869 | |
870 | memset(&un, 0, sizeof(un)); | |
871 | un.sun_family = AF_UNIX; | |
872 | strncpy(un.sun_path, path, sizeof(un.sun_path)); | |
873 | ||
d247d25f | 874 | if (bind(sock, (struct sockaddr*) &un, sizeof(un)) < 0) { |
56382bd5 | 875 | error_setg_errno(errp, errno, "Failed to bind socket to %s", path); |
d247d25f AL |
876 | goto err; |
877 | } | |
878 | if (listen(sock, 1) < 0) { | |
235256a2 | 879 | error_setg_errno(errp, errno, "Failed to listen on socket"); |
d247d25f AL |
880 | goto err; |
881 | } | |
882 | ||
62473511 | 883 | g_free(pathbuf); |
d247d25f AL |
884 | return sock; |
885 | ||
886 | err: | |
ad9579aa | 887 | g_free(pathbuf); |
d247d25f AL |
888 | closesocket(sock); |
889 | return -1; | |
890 | } | |
891 | ||
b2587932 | 892 | static int unix_connect_saddr(UnixSocketAddress *saddr, Error **errp) |
d247d25f AL |
893 | { |
894 | struct sockaddr_un un; | |
1fc05adf | 895 | int sock, rc; |
d247d25f | 896 | |
2942e420 | 897 | if (saddr->path == NULL) { |
312fd5f2 | 898 | error_setg(errp, "unix connect: no path specified"); |
2af2bf67 GH |
899 | return -1; |
900 | } | |
901 | ||
40ff6d7e | 902 | sock = qemu_socket(PF_UNIX, SOCK_STREAM, 0); |
d247d25f | 903 | if (sock < 0) { |
235256a2 | 904 | error_setg_errno(errp, errno, "Failed to create socket"); |
39b6efc8 | 905 | return -1; |
d247d25f AL |
906 | } |
907 | ||
ad9579aa DB |
908 | if (strlen(saddr->path) > sizeof(un.sun_path)) { |
909 | error_setg(errp, "UNIX socket path '%s' is too long", saddr->path); | |
910 | error_append_hint(errp, "Path must be less than %zu bytes\n", | |
911 | sizeof(un.sun_path)); | |
912 | goto err; | |
913 | } | |
914 | ||
d247d25f AL |
915 | memset(&un, 0, sizeof(un)); |
916 | un.sun_family = AF_UNIX; | |
ad9579aa | 917 | strncpy(un.sun_path, saddr->path, sizeof(un.sun_path)); |
1fc05adf PB |
918 | |
919 | /* connect to peer */ | |
920 | do { | |
921 | rc = 0; | |
922 | if (connect(sock, (struct sockaddr *) &un, sizeof(un)) < 0) { | |
b16a44e1 | 923 | rc = -errno; |
1fc05adf PB |
924 | } |
925 | } while (rc == -EINTR); | |
926 | ||
1fc05adf | 927 | if (rc < 0) { |
ad9579aa DB |
928 | error_setg_errno(errp, -rc, "Failed to connect socket %s", |
929 | saddr->path); | |
930 | goto err; | |
d247d25f AL |
931 | } |
932 | ||
d247d25f | 933 | return sock; |
ad9579aa DB |
934 | |
935 | err: | |
936 | close(sock); | |
ad9579aa | 937 | return -1; |
d247d25f AL |
938 | } |
939 | ||
0c814709 PB |
940 | #else |
941 | ||
1856835d | 942 | static int unix_listen_saddr(UnixSocketAddress *saddr, |
1856835d | 943 | Error **errp) |
0c814709 | 944 | { |
58899664 | 945 | error_setg(errp, "unix sockets are not available on windows"); |
0c814709 PB |
946 | errno = ENOTSUP; |
947 | return -1; | |
948 | } | |
949 | ||
b2587932 | 950 | static int unix_connect_saddr(UnixSocketAddress *saddr, Error **errp) |
0c814709 | 951 | { |
58899664 | 952 | error_setg(errp, "unix sockets are not available on windows"); |
0c814709 PB |
953 | errno = ENOTSUP; |
954 | return -1; | |
955 | } | |
956 | #endif | |
957 | ||
2af2bf67 | 958 | /* compatibility wrapper */ |
62473511 | 959 | int unix_listen(const char *str, Error **errp) |
62b6adfb | 960 | { |
62b6adfb GH |
961 | char *path, *optstr; |
962 | int sock, len; | |
1856835d | 963 | UnixSocketAddress *saddr; |
62b6adfb | 964 | |
1856835d | 965 | saddr = g_new0(UnixSocketAddress, 1); |
62b6adfb GH |
966 | |
967 | optstr = strchr(str, ','); | |
968 | if (optstr) { | |
969 | len = optstr - str; | |
970 | if (len) { | |
7267c094 | 971 | path = g_malloc(len+1); |
62b6adfb | 972 | snprintf(path, len+1, "%.*s", len, str); |
1856835d | 973 | saddr->path = path; |
62b6adfb GH |
974 | } |
975 | } else { | |
1856835d | 976 | saddr->path = g_strdup(str); |
62b6adfb GH |
977 | } |
978 | ||
62473511 | 979 | sock = unix_listen_saddr(saddr, errp); |
26015051 | 980 | |
1856835d | 981 | qapi_free_UnixSocketAddress(saddr); |
62b6adfb GH |
982 | return sock; |
983 | } | |
984 | ||
7fc4e63e | 985 | int unix_connect(const char *path, Error **errp) |
2af2bf67 | 986 | { |
2942e420 | 987 | UnixSocketAddress *saddr; |
2af2bf67 GH |
988 | int sock; |
989 | ||
2942e420 DB |
990 | saddr = g_new0(UnixSocketAddress, 1); |
991 | saddr->path = g_strdup(path); | |
b2587932 | 992 | sock = unix_connect_saddr(saddr, errp); |
2942e420 | 993 | qapi_free_UnixSocketAddress(saddr); |
1fc05adf PB |
994 | return sock; |
995 | } | |
996 | ||
997 | ||
bd269ebc | 998 | SocketAddress *socket_parse(const char *str, Error **errp) |
101f9cbc | 999 | { |
bd269ebc | 1000 | SocketAddress *addr; |
101f9cbc | 1001 | |
bd269ebc | 1002 | addr = g_new0(SocketAddress, 1); |
101f9cbc PB |
1003 | if (strstart(str, "unix:", NULL)) { |
1004 | if (str[5] == '\0') { | |
312fd5f2 | 1005 | error_setg(errp, "invalid Unix socket address"); |
101f9cbc PB |
1006 | goto fail; |
1007 | } else { | |
bd269ebc MA |
1008 | addr->type = SOCKET_ADDRESS_TYPE_UNIX; |
1009 | addr->u.q_unix.path = g_strdup(str + 5); | |
101f9cbc PB |
1010 | } |
1011 | } else if (strstart(str, "fd:", NULL)) { | |
1012 | if (str[3] == '\0') { | |
312fd5f2 | 1013 | error_setg(errp, "invalid file descriptor address"); |
101f9cbc PB |
1014 | goto fail; |
1015 | } else { | |
bd269ebc MA |
1016 | addr->type = SOCKET_ADDRESS_TYPE_FD; |
1017 | addr->u.fd.str = g_strdup(str + 3); | |
101f9cbc | 1018 | } |
6a02c806 | 1019 | } else if (strstart(str, "vsock:", NULL)) { |
bd269ebc MA |
1020 | addr->type = SOCKET_ADDRESS_TYPE_VSOCK; |
1021 | if (vsock_parse(&addr->u.vsock, str + strlen("vsock:"), errp)) { | |
6a02c806 SH |
1022 | goto fail; |
1023 | } | |
101f9cbc | 1024 | } else { |
bd269ebc MA |
1025 | addr->type = SOCKET_ADDRESS_TYPE_INET; |
1026 | if (inet_parse(&addr->u.inet, str, errp)) { | |
101f9cbc PB |
1027 | goto fail; |
1028 | } | |
1029 | } | |
1030 | return addr; | |
1031 | ||
1032 | fail: | |
bd269ebc | 1033 | qapi_free_SocketAddress(addr); |
101f9cbc PB |
1034 | return NULL; |
1035 | } | |
1036 | ||
b2587932 | 1037 | int socket_connect(SocketAddress *addr, Error **errp) |
101f9cbc | 1038 | { |
101f9cbc PB |
1039 | int fd; |
1040 | ||
2d32adda | 1041 | switch (addr->type) { |
bd269ebc | 1042 | case SOCKET_ADDRESS_TYPE_INET: |
b2587932 | 1043 | fd = inet_connect_saddr(&addr->u.inet, errp); |
101f9cbc PB |
1044 | break; |
1045 | ||
bd269ebc | 1046 | case SOCKET_ADDRESS_TYPE_UNIX: |
b2587932 | 1047 | fd = unix_connect_saddr(&addr->u.q_unix, errp); |
101f9cbc PB |
1048 | break; |
1049 | ||
bd269ebc MA |
1050 | case SOCKET_ADDRESS_TYPE_FD: |
1051 | fd = monitor_get_fd(cur_mon, addr->u.fd.str, errp); | |
101f9cbc PB |
1052 | break; |
1053 | ||
bd269ebc | 1054 | case SOCKET_ADDRESS_TYPE_VSOCK: |
b2587932 | 1055 | fd = vsock_connect_saddr(&addr->u.vsock, errp); |
6a02c806 SH |
1056 | break; |
1057 | ||
101f9cbc PB |
1058 | default: |
1059 | abort(); | |
1060 | } | |
101f9cbc PB |
1061 | return fd; |
1062 | } | |
1063 | ||
bd269ebc | 1064 | int socket_listen(SocketAddress *addr, Error **errp) |
101f9cbc | 1065 | { |
101f9cbc PB |
1066 | int fd; |
1067 | ||
2d32adda | 1068 | switch (addr->type) { |
bd269ebc | 1069 | case SOCKET_ADDRESS_TYPE_INET: |
62473511 | 1070 | fd = inet_listen_saddr(&addr->u.inet, 0, errp); |
101f9cbc PB |
1071 | break; |
1072 | ||
bd269ebc | 1073 | case SOCKET_ADDRESS_TYPE_UNIX: |
62473511 | 1074 | fd = unix_listen_saddr(&addr->u.q_unix, errp); |
101f9cbc PB |
1075 | break; |
1076 | ||
bd269ebc MA |
1077 | case SOCKET_ADDRESS_TYPE_FD: |
1078 | fd = monitor_get_fd(cur_mon, addr->u.fd.str, errp); | |
101f9cbc PB |
1079 | break; |
1080 | ||
bd269ebc MA |
1081 | case SOCKET_ADDRESS_TYPE_VSOCK: |
1082 | fd = vsock_listen_saddr(&addr->u.vsock, errp); | |
6a02c806 SH |
1083 | break; |
1084 | ||
101f9cbc PB |
1085 | default: |
1086 | abort(); | |
1087 | } | |
101f9cbc PB |
1088 | return fd; |
1089 | } | |
1090 | ||
74b6ce43 MAL |
1091 | void socket_listen_cleanup(int fd, Error **errp) |
1092 | { | |
bd269ebc | 1093 | SocketAddress *addr; |
74b6ce43 MAL |
1094 | |
1095 | addr = socket_local_address(fd, errp); | |
2d7ad7c0 DB |
1096 | if (!addr) { |
1097 | return; | |
1098 | } | |
74b6ce43 | 1099 | |
bd269ebc MA |
1100 | if (addr->type == SOCKET_ADDRESS_TYPE_UNIX |
1101 | && addr->u.q_unix.path) { | |
1102 | if (unlink(addr->u.q_unix.path) < 0 && errno != ENOENT) { | |
74b6ce43 MAL |
1103 | error_setg_errno(errp, errno, |
1104 | "Failed to unlink socket %s", | |
bd269ebc | 1105 | addr->u.q_unix.path); |
74b6ce43 MAL |
1106 | } |
1107 | } | |
1108 | ||
bd269ebc | 1109 | qapi_free_SocketAddress(addr); |
74b6ce43 MAL |
1110 | } |
1111 | ||
bd269ebc | 1112 | int socket_dgram(SocketAddress *remote, SocketAddress *local, Error **errp) |
3ecc059d | 1113 | { |
3ecc059d GH |
1114 | int fd; |
1115 | ||
ca0b64e5 | 1116 | /* |
bd269ebc | 1117 | * TODO SOCKET_ADDRESS_TYPE_FD when fd is AF_INET or AF_INET6 |
ca0b64e5 MA |
1118 | * (although other address families can do SOCK_DGRAM, too) |
1119 | */ | |
2d32adda | 1120 | switch (remote->type) { |
bd269ebc MA |
1121 | case SOCKET_ADDRESS_TYPE_INET: |
1122 | fd = inet_dgram_saddr(&remote->u.inet, | |
1123 | local ? &local->u.inet : NULL, errp); | |
3ecc059d GH |
1124 | break; |
1125 | ||
1126 | default: | |
1127 | error_setg(errp, "socket type unsupported for datagram"); | |
7a5b6af1 | 1128 | fd = -1; |
3ecc059d | 1129 | } |
3ecc059d GH |
1130 | return fd; |
1131 | } | |
17c55dec DB |
1132 | |
1133 | ||
bd269ebc | 1134 | static SocketAddress * |
17c55dec DB |
1135 | socket_sockaddr_to_address_inet(struct sockaddr_storage *sa, |
1136 | socklen_t salen, | |
1137 | Error **errp) | |
1138 | { | |
1139 | char host[NI_MAXHOST]; | |
1140 | char serv[NI_MAXSERV]; | |
bd269ebc | 1141 | SocketAddress *addr; |
0399293e | 1142 | InetSocketAddress *inet; |
17c55dec DB |
1143 | int ret; |
1144 | ||
1145 | ret = getnameinfo((struct sockaddr *)sa, salen, | |
1146 | host, sizeof(host), | |
1147 | serv, sizeof(serv), | |
1148 | NI_NUMERICHOST | NI_NUMERICSERV); | |
1149 | if (ret != 0) { | |
1150 | error_setg(errp, "Cannot format numeric socket address: %s", | |
1151 | gai_strerror(ret)); | |
1152 | return NULL; | |
1153 | } | |
1154 | ||
bd269ebc MA |
1155 | addr = g_new0(SocketAddress, 1); |
1156 | addr->type = SOCKET_ADDRESS_TYPE_INET; | |
1157 | inet = &addr->u.inet; | |
0399293e EB |
1158 | inet->host = g_strdup(host); |
1159 | inet->port = g_strdup(serv); | |
17c55dec | 1160 | if (sa->ss_family == AF_INET) { |
0399293e | 1161 | inet->has_ipv4 = inet->ipv4 = true; |
17c55dec | 1162 | } else { |
0399293e | 1163 | inet->has_ipv6 = inet->ipv6 = true; |
17c55dec DB |
1164 | } |
1165 | ||
1166 | return addr; | |
1167 | } | |
1168 | ||
1169 | ||
1170 | #ifndef WIN32 | |
bd269ebc | 1171 | static SocketAddress * |
17c55dec DB |
1172 | socket_sockaddr_to_address_unix(struct sockaddr_storage *sa, |
1173 | socklen_t salen, | |
1174 | Error **errp) | |
1175 | { | |
bd269ebc | 1176 | SocketAddress *addr; |
17c55dec DB |
1177 | struct sockaddr_un *su = (struct sockaddr_un *)sa; |
1178 | ||
bd269ebc MA |
1179 | addr = g_new0(SocketAddress, 1); |
1180 | addr->type = SOCKET_ADDRESS_TYPE_UNIX; | |
17c55dec | 1181 | if (su->sun_path[0]) { |
bd269ebc | 1182 | addr->u.q_unix.path = g_strndup(su->sun_path, sizeof(su->sun_path)); |
17c55dec DB |
1183 | } |
1184 | ||
1185 | return addr; | |
1186 | } | |
1187 | #endif /* WIN32 */ | |
1188 | ||
6a02c806 | 1189 | #ifdef CONFIG_AF_VSOCK |
bd269ebc | 1190 | static SocketAddress * |
6a02c806 SH |
1191 | socket_sockaddr_to_address_vsock(struct sockaddr_storage *sa, |
1192 | socklen_t salen, | |
1193 | Error **errp) | |
1194 | { | |
bd269ebc | 1195 | SocketAddress *addr; |
6a02c806 SH |
1196 | VsockSocketAddress *vaddr; |
1197 | struct sockaddr_vm *svm = (struct sockaddr_vm *)sa; | |
1198 | ||
bd269ebc MA |
1199 | addr = g_new0(SocketAddress, 1); |
1200 | addr->type = SOCKET_ADDRESS_TYPE_VSOCK; | |
1201 | vaddr = &addr->u.vsock; | |
6a02c806 SH |
1202 | vaddr->cid = g_strdup_printf("%u", svm->svm_cid); |
1203 | vaddr->port = g_strdup_printf("%u", svm->svm_port); | |
1204 | ||
1205 | return addr; | |
1206 | } | |
1207 | #endif /* CONFIG_AF_VSOCK */ | |
1208 | ||
bd269ebc | 1209 | SocketAddress * |
17c55dec DB |
1210 | socket_sockaddr_to_address(struct sockaddr_storage *sa, |
1211 | socklen_t salen, | |
1212 | Error **errp) | |
1213 | { | |
1214 | switch (sa->ss_family) { | |
1215 | case AF_INET: | |
1216 | case AF_INET6: | |
1217 | return socket_sockaddr_to_address_inet(sa, salen, errp); | |
1218 | ||
1219 | #ifndef WIN32 | |
1220 | case AF_UNIX: | |
1221 | return socket_sockaddr_to_address_unix(sa, salen, errp); | |
1222 | #endif /* WIN32 */ | |
1223 | ||
6a02c806 SH |
1224 | #ifdef CONFIG_AF_VSOCK |
1225 | case AF_VSOCK: | |
1226 | return socket_sockaddr_to_address_vsock(sa, salen, errp); | |
1227 | #endif | |
1228 | ||
17c55dec DB |
1229 | default: |
1230 | error_setg(errp, "socket family %d unsupported", | |
1231 | sa->ss_family); | |
1232 | return NULL; | |
1233 | } | |
1234 | return 0; | |
1235 | } | |
1236 | ||
1237 | ||
bd269ebc | 1238 | SocketAddress *socket_local_address(int fd, Error **errp) |
17c55dec DB |
1239 | { |
1240 | struct sockaddr_storage ss; | |
1241 | socklen_t sslen = sizeof(ss); | |
1242 | ||
1243 | if (getsockname(fd, (struct sockaddr *)&ss, &sslen) < 0) { | |
b16a44e1 | 1244 | error_setg_errno(errp, errno, "%s", |
17c55dec DB |
1245 | "Unable to query local socket address"); |
1246 | return NULL; | |
1247 | } | |
1248 | ||
1249 | return socket_sockaddr_to_address(&ss, sslen, errp); | |
1250 | } | |
1251 | ||
1252 | ||
bd269ebc | 1253 | SocketAddress *socket_remote_address(int fd, Error **errp) |
17c55dec DB |
1254 | { |
1255 | struct sockaddr_storage ss; | |
1256 | socklen_t sslen = sizeof(ss); | |
1257 | ||
1258 | if (getpeername(fd, (struct sockaddr *)&ss, &sslen) < 0) { | |
b16a44e1 | 1259 | error_setg_errno(errp, errno, "%s", |
17c55dec DB |
1260 | "Unable to query remote socket address"); |
1261 | return NULL; | |
1262 | } | |
1263 | ||
1264 | return socket_sockaddr_to_address(&ss, sslen, errp); | |
1265 | } | |
2a8e21c7 | 1266 | |
216411b8 | 1267 | |
bd269ebc MA |
1268 | SocketAddress *socket_address_flatten(SocketAddressLegacy *addr_legacy) |
1269 | { | |
fc0f0059 | 1270 | SocketAddress *addr; |
bd269ebc MA |
1271 | |
1272 | if (!addr_legacy) { | |
1273 | return NULL; | |
1274 | } | |
1275 | ||
fc0f0059 MA |
1276 | addr = g_new(SocketAddress, 1); |
1277 | ||
bd269ebc MA |
1278 | switch (addr_legacy->type) { |
1279 | case SOCKET_ADDRESS_LEGACY_KIND_INET: | |
1280 | addr->type = SOCKET_ADDRESS_TYPE_INET; | |
1281 | QAPI_CLONE_MEMBERS(InetSocketAddress, &addr->u.inet, | |
1282 | addr_legacy->u.inet.data); | |
1283 | break; | |
1284 | case SOCKET_ADDRESS_LEGACY_KIND_UNIX: | |
1285 | addr->type = SOCKET_ADDRESS_TYPE_UNIX; | |
1286 | QAPI_CLONE_MEMBERS(UnixSocketAddress, &addr->u.q_unix, | |
1287 | addr_legacy->u.q_unix.data); | |
1288 | break; | |
1289 | case SOCKET_ADDRESS_LEGACY_KIND_VSOCK: | |
1290 | addr->type = SOCKET_ADDRESS_TYPE_VSOCK; | |
1291 | QAPI_CLONE_MEMBERS(VsockSocketAddress, &addr->u.vsock, | |
1292 | addr_legacy->u.vsock.data); | |
1293 | break; | |
1294 | case SOCKET_ADDRESS_LEGACY_KIND_FD: | |
1295 | addr->type = SOCKET_ADDRESS_TYPE_FD; | |
1296 | QAPI_CLONE_MEMBERS(String, &addr->u.fd, addr_legacy->u.fd.data); | |
1297 | break; | |
1298 | default: | |
1299 | abort(); | |
1300 | } | |
1301 | ||
1302 | return addr; | |
1303 | } |