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Commit | Line | Data |
---|---|---|
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 | */ |
d247d25f AL |
18 | #include <stdio.h> |
19 | #include <stdlib.h> | |
20 | #include <string.h> | |
21 | #include <ctype.h> | |
22 | #include <errno.h> | |
23 | #include <unistd.h> | |
24 | ||
25 | #include "qemu_socket.h" | |
47398b9c | 26 | #include "qemu-common.h" /* for qemu_isdigit */ |
233aa5c2 | 27 | #include "main-loop.h" |
d247d25f AL |
28 | |
29 | #ifndef AI_ADDRCONFIG | |
30 | # define AI_ADDRCONFIG 0 | |
31 | #endif | |
32 | ||
d247d25f AL |
33 | static const int on=1, off=0; |
34 | ||
2af2bf67 | 35 | /* used temporarely until all users are converted to QemuOpts */ |
c1390903 | 36 | static QemuOptsList dummy_opts = { |
2af2bf67 | 37 | .name = "dummy", |
72cf2d4f | 38 | .head = QTAILQ_HEAD_INITIALIZER(dummy_opts.head), |
2af2bf67 GH |
39 | .desc = { |
40 | { | |
41 | .name = "path", | |
42 | .type = QEMU_OPT_STRING, | |
f4c94c7c GH |
43 | },{ |
44 | .name = "host", | |
45 | .type = QEMU_OPT_STRING, | |
46 | },{ | |
47 | .name = "port", | |
48 | .type = QEMU_OPT_STRING, | |
49 | },{ | |
50 | .name = "to", | |
51 | .type = QEMU_OPT_NUMBER, | |
52 | },{ | |
53 | .name = "ipv4", | |
54 | .type = QEMU_OPT_BOOL, | |
55 | },{ | |
56 | .name = "ipv6", | |
57 | .type = QEMU_OPT_BOOL, | |
2af2bf67 GH |
58 | }, |
59 | { /* end if list */ } | |
60 | }, | |
61 | }; | |
62 | ||
d247d25f AL |
63 | static int inet_getport(struct addrinfo *e) |
64 | { | |
65 | struct sockaddr_in *i4; | |
66 | struct sockaddr_in6 *i6; | |
67 | ||
68 | switch (e->ai_family) { | |
69 | case PF_INET6: | |
70 | i6 = (void*)e->ai_addr; | |
71 | return ntohs(i6->sin6_port); | |
72 | case PF_INET: | |
73 | i4 = (void*)e->ai_addr; | |
74 | return ntohs(i4->sin_port); | |
75 | default: | |
76 | return 0; | |
77 | } | |
78 | } | |
79 | ||
80 | static void inet_setport(struct addrinfo *e, int port) | |
81 | { | |
82 | struct sockaddr_in *i4; | |
83 | struct sockaddr_in6 *i6; | |
84 | ||
85 | switch (e->ai_family) { | |
86 | case PF_INET6: | |
87 | i6 = (void*)e->ai_addr; | |
88 | i6->sin6_port = htons(port); | |
89 | break; | |
90 | case PF_INET: | |
91 | i4 = (void*)e->ai_addr; | |
92 | i4->sin_port = htons(port); | |
93 | break; | |
94 | } | |
95 | } | |
96 | ||
c9c4b34e | 97 | const char *inet_strfamily(int family) |
d247d25f AL |
98 | { |
99 | switch (family) { | |
100 | case PF_INET6: return "ipv6"; | |
101 | case PF_INET: return "ipv4"; | |
102 | case PF_UNIX: return "unix"; | |
103 | } | |
c445321e | 104 | return "unknown"; |
d247d25f AL |
105 | } |
106 | ||
029409e5 | 107 | int inet_listen_opts(QemuOpts *opts, int port_offset, Error **errp) |
d247d25f AL |
108 | { |
109 | struct addrinfo ai,*res,*e; | |
e5bc776f | 110 | const char *addr; |
d247d25f AL |
111 | char port[33]; |
112 | char uaddr[INET6_ADDRSTRLEN+1]; | |
113 | char uport[33]; | |
877691f9 | 114 | int slisten, rc, to, port_min, port_max, p; |
d247d25f AL |
115 | |
116 | memset(&ai,0, sizeof(ai)); | |
117 | ai.ai_flags = AI_PASSIVE | AI_ADDRCONFIG; | |
118 | ai.ai_family = PF_UNSPEC; | |
e5bc776f | 119 | ai.ai_socktype = SOCK_STREAM; |
d247d25f | 120 | |
e23a22e6 JO |
121 | if ((qemu_opt_get(opts, "host") == NULL) || |
122 | (qemu_opt_get(opts, "port") == NULL)) { | |
a12fb8ad | 123 | error_setg(errp, "host and/or port not specified"); |
e5bc776f | 124 | return -1; |
d247d25f | 125 | } |
e5bc776f GH |
126 | pstrcpy(port, sizeof(port), qemu_opt_get(opts, "port")); |
127 | addr = qemu_opt_get(opts, "host"); | |
d247d25f | 128 | |
e5bc776f GH |
129 | to = qemu_opt_get_number(opts, "to", 0); |
130 | if (qemu_opt_get_bool(opts, "ipv4", 0)) | |
d247d25f | 131 | ai.ai_family = PF_INET; |
e5bc776f | 132 | if (qemu_opt_get_bool(opts, "ipv6", 0)) |
d247d25f AL |
133 | ai.ai_family = PF_INET6; |
134 | ||
135 | /* lookup */ | |
136 | if (port_offset) | |
137 | snprintf(port, sizeof(port), "%d", atoi(port) + port_offset); | |
138 | rc = getaddrinfo(strlen(addr) ? addr : NULL, port, &ai, &res); | |
139 | if (rc != 0) { | |
a12fb8ad PB |
140 | error_setg(errp, "address resolution failed for %s:%s: %s", addr, port, |
141 | gai_strerror(rc)); | |
d247d25f AL |
142 | return -1; |
143 | } | |
d247d25f AL |
144 | |
145 | /* create socket + bind */ | |
146 | for (e = res; e != NULL; e = e->ai_next) { | |
39b6efc8 VS |
147 | getnameinfo((struct sockaddr*)e->ai_addr,e->ai_addrlen, |
148 | uaddr,INET6_ADDRSTRLEN,uport,32, | |
149 | NI_NUMERICHOST | NI_NUMERICSERV); | |
40ff6d7e | 150 | slisten = qemu_socket(e->ai_family, e->ai_socktype, e->ai_protocol); |
39b6efc8 | 151 | if (slisten < 0) { |
029409e5 | 152 | if (!e->ai_next) { |
a12fb8ad | 153 | error_set_errno(errp, errno, QERR_SOCKET_CREATE_FAILED); |
029409e5 | 154 | } |
39b6efc8 VS |
155 | continue; |
156 | } | |
d247d25f AL |
157 | |
158 | setsockopt(slisten,SOL_SOCKET,SO_REUSEADDR,(void*)&on,sizeof(on)); | |
159 | #ifdef IPV6_V6ONLY | |
160 | if (e->ai_family == PF_INET6) { | |
161 | /* listen on both ipv4 and ipv6 */ | |
39b6efc8 VS |
162 | setsockopt(slisten,IPPROTO_IPV6,IPV6_V6ONLY,(void*)&off, |
163 | sizeof(off)); | |
d247d25f AL |
164 | } |
165 | #endif | |
166 | ||
877691f9 MA |
167 | port_min = inet_getport(e); |
168 | port_max = to ? to + port_offset : port_min; | |
169 | for (p = port_min; p <= port_max; p++) { | |
170 | inet_setport(e, p); | |
d247d25f | 171 | if (bind(slisten, e->ai_addr, e->ai_addrlen) == 0) { |
d247d25f AL |
172 | goto listen; |
173 | } | |
877691f9 | 174 | if (p == port_max) { |
029409e5 | 175 | if (!e->ai_next) { |
a12fb8ad | 176 | error_set_errno(errp, errno, QERR_SOCKET_BIND_FAILED); |
029409e5 | 177 | } |
d247d25f | 178 | } |
d247d25f AL |
179 | } |
180 | closesocket(slisten); | |
181 | } | |
d247d25f AL |
182 | freeaddrinfo(res); |
183 | return -1; | |
184 | ||
185 | listen: | |
186 | if (listen(slisten,1) != 0) { | |
a12fb8ad | 187 | error_set_errno(errp, errno, QERR_SOCKET_LISTEN_FAILED); |
d247d25f | 188 | closesocket(slisten); |
39b6efc8 | 189 | freeaddrinfo(res); |
d247d25f AL |
190 | return -1; |
191 | } | |
e5bc776f GH |
192 | snprintf(uport, sizeof(uport), "%d", inet_getport(e) - port_offset); |
193 | qemu_opt_set(opts, "host", uaddr); | |
194 | qemu_opt_set(opts, "port", uport); | |
195 | qemu_opt_set(opts, "ipv6", (e->ai_family == PF_INET6) ? "on" : "off"); | |
196 | qemu_opt_set(opts, "ipv4", (e->ai_family != PF_INET6) ? "on" : "off"); | |
d247d25f AL |
197 | freeaddrinfo(res); |
198 | return slisten; | |
199 | } | |
200 | ||
05bc1d8a MT |
201 | #ifdef _WIN32 |
202 | #define QEMU_SOCKET_RC_INPROGRESS(rc) \ | |
203 | ((rc) == -EINPROGRESS || (rc) == -EWOULDBLOCK || (rc) == -WSAEALREADY) | |
204 | #else | |
205 | #define QEMU_SOCKET_RC_INPROGRESS(rc) \ | |
206 | ((rc) == -EINPROGRESS) | |
207 | #endif | |
208 | ||
233aa5c2 OW |
209 | /* Struct to store connect state for non blocking connect */ |
210 | typedef struct ConnectState { | |
211 | int fd; | |
212 | struct addrinfo *addr_list; | |
213 | struct addrinfo *current_addr; | |
214 | NonBlockingConnectHandler *callback; | |
215 | void *opaque; | |
216 | } ConnectState; | |
217 | ||
218 | static int inet_connect_addr(struct addrinfo *addr, bool *in_progress, | |
11663b55 | 219 | ConnectState *connect_state, Error **errp); |
233aa5c2 OW |
220 | |
221 | static void wait_for_connect(void *opaque) | |
d247d25f | 222 | { |
233aa5c2 OW |
223 | ConnectState *s = opaque; |
224 | int val = 0, rc = 0; | |
225 | socklen_t valsize = sizeof(val); | |
226 | bool in_progress; | |
227 | ||
228 | qemu_set_fd_handler2(s->fd, NULL, NULL, NULL, NULL); | |
229 | ||
230 | do { | |
231 | rc = getsockopt(s->fd, SOL_SOCKET, SO_ERROR, (void *) &val, &valsize); | |
232 | } while (rc == -1 && socket_error() == EINTR); | |
233 | ||
234 | /* update rc to contain error */ | |
235 | if (!rc && val) { | |
236 | rc = -1; | |
237 | } | |
238 | ||
239 | /* connect error */ | |
240 | if (rc < 0) { | |
241 | closesocket(s->fd); | |
242 | s->fd = rc; | |
243 | } | |
244 | ||
245 | /* try to connect to the next address on the list */ | |
1fc05adf PB |
246 | if (s->current_addr) { |
247 | while (s->current_addr->ai_next != NULL && s->fd < 0) { | |
248 | s->current_addr = s->current_addr->ai_next; | |
11663b55 | 249 | s->fd = inet_connect_addr(s->current_addr, &in_progress, s, NULL); |
1fc05adf PB |
250 | /* connect in progress */ |
251 | if (in_progress) { | |
252 | return; | |
253 | } | |
233aa5c2 | 254 | } |
1fc05adf PB |
255 | |
256 | freeaddrinfo(s->addr_list); | |
233aa5c2 | 257 | } |
05bc1d8a | 258 | |
233aa5c2 OW |
259 | if (s->callback) { |
260 | s->callback(s->fd, s->opaque); | |
05bc1d8a | 261 | } |
233aa5c2 | 262 | g_free(s); |
233aa5c2 OW |
263 | } |
264 | ||
265 | static int inet_connect_addr(struct addrinfo *addr, bool *in_progress, | |
11663b55 | 266 | ConnectState *connect_state, Error **errp) |
233aa5c2 OW |
267 | { |
268 | int sock, rc; | |
269 | ||
270 | *in_progress = false; | |
05bc1d8a MT |
271 | |
272 | sock = qemu_socket(addr->ai_family, addr->ai_socktype, addr->ai_protocol); | |
273 | if (sock < 0) { | |
11663b55 | 274 | error_set_errno(errp, errno, QERR_SOCKET_CREATE_FAILED); |
05bc1d8a MT |
275 | return -1; |
276 | } | |
58455eb9 | 277 | qemu_setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, &on, sizeof(on)); |
233aa5c2 | 278 | if (connect_state != NULL) { |
05bc1d8a MT |
279 | socket_set_nonblock(sock); |
280 | } | |
281 | /* connect to peer */ | |
282 | do { | |
283 | rc = 0; | |
284 | if (connect(sock, addr->ai_addr, addr->ai_addrlen) < 0) { | |
285 | rc = -socket_error(); | |
286 | } | |
287 | } while (rc == -EINTR); | |
288 | ||
233aa5c2 OW |
289 | if (connect_state != NULL && QEMU_SOCKET_RC_INPROGRESS(rc)) { |
290 | connect_state->fd = sock; | |
291 | qemu_set_fd_handler2(sock, NULL, NULL, wait_for_connect, | |
292 | connect_state); | |
293 | *in_progress = true; | |
05bc1d8a | 294 | } else if (rc < 0) { |
11663b55 | 295 | error_set_errno(errp, errno, QERR_SOCKET_CONNECT_FAILED); |
05bc1d8a MT |
296 | closesocket(sock); |
297 | return -1; | |
298 | } | |
299 | return sock; | |
300 | } | |
301 | ||
302 | static struct addrinfo *inet_parse_connect_opts(QemuOpts *opts, Error **errp) | |
303 | { | |
304 | struct addrinfo ai, *res; | |
305 | int rc; | |
f4c94c7c GH |
306 | const char *addr; |
307 | const char *port; | |
d247d25f | 308 | |
05bc1d8a | 309 | memset(&ai, 0, sizeof(ai)); |
233aa5c2 | 310 | |
d247d25f AL |
311 | ai.ai_flags = AI_CANONNAME | AI_ADDRCONFIG; |
312 | ai.ai_family = PF_UNSPEC; | |
f4c94c7c | 313 | ai.ai_socktype = SOCK_STREAM; |
d247d25f | 314 | |
f4c94c7c GH |
315 | addr = qemu_opt_get(opts, "host"); |
316 | port = qemu_opt_get(opts, "port"); | |
317 | if (addr == NULL || port == NULL) { | |
a12fb8ad | 318 | error_setg(errp, "host and/or port not specified"); |
05bc1d8a | 319 | return NULL; |
d247d25f AL |
320 | } |
321 | ||
05bc1d8a | 322 | if (qemu_opt_get_bool(opts, "ipv4", 0)) { |
d247d25f | 323 | ai.ai_family = PF_INET; |
05bc1d8a MT |
324 | } |
325 | if (qemu_opt_get_bool(opts, "ipv6", 0)) { | |
d247d25f | 326 | ai.ai_family = PF_INET6; |
05bc1d8a | 327 | } |
d247d25f AL |
328 | |
329 | /* lookup */ | |
05bc1d8a MT |
330 | rc = getaddrinfo(addr, port, &ai, &res); |
331 | if (rc != 0) { | |
a12fb8ad PB |
332 | error_setg(errp, "address resolution failed for %s:%s: %s", addr, port, |
333 | gai_strerror(rc)); | |
05bc1d8a MT |
334 | return NULL; |
335 | } | |
336 | return res; | |
337 | } | |
338 | ||
5db5f44c OW |
339 | /** |
340 | * Create a socket and connect it to an address. | |
341 | * | |
342 | * @opts: QEMU options, recognized parameters strings "host" and "port", | |
343 | * bools "ipv4" and "ipv6". | |
5db5f44c | 344 | * @errp: set on error |
233aa5c2 OW |
345 | * @callback: callback function for non-blocking connect |
346 | * @opaque: opaque for callback function | |
5db5f44c OW |
347 | * |
348 | * Returns: -1 on error, file descriptor on success. | |
233aa5c2 OW |
349 | * |
350 | * If @callback is non-null, the connect is non-blocking. If this | |
351 | * function succeeds, callback will be called when the connection | |
352 | * completes, with the file descriptor on success, or -1 on error. | |
5db5f44c | 353 | */ |
233aa5c2 OW |
354 | int inet_connect_opts(QemuOpts *opts, Error **errp, |
355 | NonBlockingConnectHandler *callback, void *opaque) | |
05bc1d8a MT |
356 | { |
357 | struct addrinfo *res, *e; | |
358 | int sock = -1; | |
233aa5c2 OW |
359 | bool in_progress; |
360 | ConnectState *connect_state = NULL; | |
05bc1d8a MT |
361 | |
362 | res = inet_parse_connect_opts(opts, errp); | |
363 | if (!res) { | |
364 | return -1; | |
365 | } | |
366 | ||
233aa5c2 OW |
367 | if (callback != NULL) { |
368 | connect_state = g_malloc0(sizeof(*connect_state)); | |
369 | connect_state->addr_list = res; | |
370 | connect_state->callback = callback; | |
371 | connect_state->opaque = opaque; | |
d247d25f | 372 | } |
d247d25f AL |
373 | |
374 | for (e = res; e != NULL; e = e->ai_next) { | |
233aa5c2 OW |
375 | if (connect_state != NULL) { |
376 | connect_state->current_addr = e; | |
377 | } | |
11663b55 | 378 | sock = inet_connect_addr(e, &in_progress, connect_state, errp); |
233aa5c2 OW |
379 | if (in_progress) { |
380 | return sock; | |
381 | } else if (sock >= 0) { | |
382 | /* non blocking socket immediate success, call callback */ | |
383 | if (callback != NULL) { | |
384 | callback(sock, opaque); | |
385 | } | |
05bc1d8a | 386 | break; |
a6ba35b3 | 387 | } |
d247d25f | 388 | } |
233aa5c2 | 389 | g_free(connect_state); |
d247d25f | 390 | freeaddrinfo(res); |
05bc1d8a | 391 | return sock; |
d247d25f AL |
392 | } |
393 | ||
7fc4e63e | 394 | int inet_dgram_opts(QemuOpts *opts, Error **errp) |
7e1b35b4 GH |
395 | { |
396 | struct addrinfo ai, *peer = NULL, *local = NULL; | |
397 | const char *addr; | |
398 | const char *port; | |
399 | char uaddr[INET6_ADDRSTRLEN+1]; | |
400 | char uport[33]; | |
401 | int sock = -1, rc; | |
402 | ||
403 | /* lookup peer addr */ | |
404 | memset(&ai,0, sizeof(ai)); | |
405 | ai.ai_flags = AI_CANONNAME | AI_ADDRCONFIG; | |
406 | ai.ai_family = PF_UNSPEC; | |
407 | ai.ai_socktype = SOCK_DGRAM; | |
408 | ||
409 | addr = qemu_opt_get(opts, "host"); | |
410 | port = qemu_opt_get(opts, "port"); | |
411 | if (addr == NULL || strlen(addr) == 0) { | |
412 | addr = "localhost"; | |
413 | } | |
414 | if (port == NULL || strlen(port) == 0) { | |
415 | fprintf(stderr, "inet_dgram: port not specified\n"); | |
416 | return -1; | |
417 | } | |
418 | ||
419 | if (qemu_opt_get_bool(opts, "ipv4", 0)) | |
420 | ai.ai_family = PF_INET; | |
421 | if (qemu_opt_get_bool(opts, "ipv6", 0)) | |
422 | ai.ai_family = PF_INET6; | |
423 | ||
424 | if (0 != (rc = getaddrinfo(addr, port, &ai, &peer))) { | |
425 | fprintf(stderr,"getaddrinfo(%s,%s): %s\n", addr, port, | |
426 | gai_strerror(rc)); | |
427 | return -1; | |
428 | } | |
7e1b35b4 GH |
429 | |
430 | /* lookup local addr */ | |
431 | memset(&ai,0, sizeof(ai)); | |
432 | ai.ai_flags = AI_PASSIVE; | |
433 | ai.ai_family = peer->ai_family; | |
434 | ai.ai_socktype = SOCK_DGRAM; | |
435 | ||
436 | addr = qemu_opt_get(opts, "localaddr"); | |
437 | port = qemu_opt_get(opts, "localport"); | |
438 | if (addr == NULL || strlen(addr) == 0) { | |
439 | addr = NULL; | |
440 | } | |
441 | if (!port || strlen(port) == 0) | |
442 | port = "0"; | |
443 | ||
444 | if (0 != (rc = getaddrinfo(addr, port, &ai, &local))) { | |
445 | fprintf(stderr,"getaddrinfo(%s,%s): %s\n", addr, port, | |
446 | gai_strerror(rc)); | |
39b38459 | 447 | goto err; |
7e1b35b4 | 448 | } |
7e1b35b4 GH |
449 | |
450 | /* create socket */ | |
40ff6d7e | 451 | sock = qemu_socket(peer->ai_family, peer->ai_socktype, peer->ai_protocol); |
7e1b35b4 GH |
452 | if (sock < 0) { |
453 | fprintf(stderr,"%s: socket(%s): %s\n", __FUNCTION__, | |
454 | inet_strfamily(peer->ai_family), strerror(errno)); | |
455 | goto err; | |
456 | } | |
457 | setsockopt(sock,SOL_SOCKET,SO_REUSEADDR,(void*)&on,sizeof(on)); | |
458 | ||
459 | /* bind socket */ | |
460 | if (getnameinfo((struct sockaddr*)local->ai_addr,local->ai_addrlen, | |
461 | uaddr,INET6_ADDRSTRLEN,uport,32, | |
462 | NI_NUMERICHOST | NI_NUMERICSERV) != 0) { | |
463 | fprintf(stderr, "%s: getnameinfo: oops\n", __FUNCTION__); | |
464 | goto err; | |
465 | } | |
466 | if (bind(sock, local->ai_addr, local->ai_addrlen) < 0) { | |
467 | fprintf(stderr,"%s: bind(%s,%s,%d): OK\n", __FUNCTION__, | |
468 | inet_strfamily(local->ai_family), uaddr, inet_getport(local)); | |
469 | goto err; | |
470 | } | |
471 | ||
472 | /* connect to peer */ | |
473 | if (getnameinfo((struct sockaddr*)peer->ai_addr, peer->ai_addrlen, | |
474 | uaddr, INET6_ADDRSTRLEN, uport, 32, | |
475 | NI_NUMERICHOST | NI_NUMERICSERV) != 0) { | |
476 | fprintf(stderr, "%s: getnameinfo: oops\n", __FUNCTION__); | |
477 | goto err; | |
478 | } | |
479 | if (connect(sock,peer->ai_addr,peer->ai_addrlen) < 0) { | |
480 | fprintf(stderr, "%s: connect(%s,%s,%s,%s): %s\n", __FUNCTION__, | |
481 | inet_strfamily(peer->ai_family), | |
482 | peer->ai_canonname, uaddr, uport, strerror(errno)); | |
483 | goto err; | |
484 | } | |
485 | ||
486 | freeaddrinfo(local); | |
487 | freeaddrinfo(peer); | |
488 | return sock; | |
489 | ||
490 | err: | |
491 | if (-1 != sock) | |
492 | closesocket(sock); | |
493 | if (local) | |
494 | freeaddrinfo(local); | |
495 | if (peer) | |
496 | freeaddrinfo(peer); | |
497 | return -1; | |
498 | } | |
499 | ||
f4c94c7c GH |
500 | /* compatibility wrapper */ |
501 | static int inet_parse(QemuOpts *opts, const char *str) | |
502 | { | |
503 | const char *optstr, *h; | |
504 | char addr[64]; | |
505 | char port[33]; | |
506 | int pos; | |
507 | ||
508 | /* parse address */ | |
509 | if (str[0] == ':') { | |
510 | /* no host given */ | |
511 | addr[0] = '\0'; | |
512 | if (1 != sscanf(str,":%32[^,]%n",port,&pos)) { | |
513 | fprintf(stderr, "%s: portonly parse error (%s)\n", | |
514 | __FUNCTION__, str); | |
515 | return -1; | |
516 | } | |
517 | } else if (str[0] == '[') { | |
518 | /* IPv6 addr */ | |
519 | if (2 != sscanf(str,"[%64[^]]]:%32[^,]%n",addr,port,&pos)) { | |
520 | fprintf(stderr, "%s: ipv6 parse error (%s)\n", | |
521 | __FUNCTION__, str); | |
522 | return -1; | |
523 | } | |
2198a62e | 524 | qemu_opt_set(opts, "ipv6", "on"); |
f4c94c7c GH |
525 | } else if (qemu_isdigit(str[0])) { |
526 | /* IPv4 addr */ | |
527 | if (2 != sscanf(str,"%64[0-9.]:%32[^,]%n",addr,port,&pos)) { | |
528 | fprintf(stderr, "%s: ipv4 parse error (%s)\n", | |
529 | __FUNCTION__, str); | |
530 | return -1; | |
531 | } | |
2198a62e | 532 | qemu_opt_set(opts, "ipv4", "on"); |
f4c94c7c GH |
533 | } else { |
534 | /* hostname */ | |
535 | if (2 != sscanf(str,"%64[^:]:%32[^,]%n",addr,port,&pos)) { | |
536 | fprintf(stderr, "%s: hostname parse error (%s)\n", | |
537 | __FUNCTION__, str); | |
538 | return -1; | |
539 | } | |
540 | } | |
541 | qemu_opt_set(opts, "host", addr); | |
542 | qemu_opt_set(opts, "port", port); | |
543 | ||
544 | /* parse options */ | |
545 | optstr = str + pos; | |
546 | h = strstr(optstr, ",to="); | |
547 | if (h) | |
548 | qemu_opt_set(opts, "to", h+4); | |
549 | if (strstr(optstr, ",ipv4")) | |
2198a62e | 550 | qemu_opt_set(opts, "ipv4", "on"); |
f4c94c7c | 551 | if (strstr(optstr, ",ipv6")) |
2198a62e | 552 | qemu_opt_set(opts, "ipv6", "on"); |
f4c94c7c GH |
553 | return 0; |
554 | } | |
555 | ||
e5bc776f | 556 | int inet_listen(const char *str, char *ostr, int olen, |
029409e5 | 557 | int socktype, int port_offset, Error **errp) |
e5bc776f GH |
558 | { |
559 | QemuOpts *opts; | |
560 | char *optstr; | |
561 | int sock = -1; | |
562 | ||
8be7e7e4 | 563 | opts = qemu_opts_create(&dummy_opts, NULL, 0, NULL); |
e5bc776f | 564 | if (inet_parse(opts, str) == 0) { |
029409e5 | 565 | sock = inet_listen_opts(opts, port_offset, errp); |
e5bc776f GH |
566 | if (sock != -1 && ostr) { |
567 | optstr = strchr(str, ','); | |
568 | if (qemu_opt_get_bool(opts, "ipv6", 0)) { | |
569 | snprintf(ostr, olen, "[%s]:%s%s", | |
570 | qemu_opt_get(opts, "host"), | |
571 | qemu_opt_get(opts, "port"), | |
572 | optstr ? optstr : ""); | |
573 | } else { | |
574 | snprintf(ostr, olen, "%s:%s%s", | |
575 | qemu_opt_get(opts, "host"), | |
576 | qemu_opt_get(opts, "port"), | |
577 | optstr ? optstr : ""); | |
578 | } | |
579 | } | |
029409e5 AK |
580 | } else { |
581 | error_set(errp, QERR_SOCKET_CREATE_FAILED); | |
e5bc776f GH |
582 | } |
583 | qemu_opts_del(opts); | |
584 | return sock; | |
585 | } | |
586 | ||
5db5f44c OW |
587 | /** |
588 | * Create a blocking socket and connect it to an address. | |
589 | * | |
590 | * @str: address string | |
591 | * @errp: set in case of an error | |
592 | * | |
593 | * Returns -1 in case of error, file descriptor on success | |
594 | **/ | |
595 | int inet_connect(const char *str, Error **errp) | |
f4c94c7c GH |
596 | { |
597 | QemuOpts *opts; | |
598 | int sock = -1; | |
599 | ||
8be7e7e4 | 600 | opts = qemu_opts_create(&dummy_opts, NULL, 0, NULL); |
a6ba35b3 | 601 | if (inet_parse(opts, str) == 0) { |
233aa5c2 | 602 | sock = inet_connect_opts(opts, errp, NULL, NULL); |
5db5f44c OW |
603 | } else { |
604 | error_set(errp, QERR_SOCKET_CREATE_FAILED); | |
605 | } | |
606 | qemu_opts_del(opts); | |
607 | return sock; | |
608 | } | |
609 | ||
610 | /** | |
611 | * Create a non-blocking socket and connect it to an address. | |
233aa5c2 OW |
612 | * Calls the callback function with fd in case of success or -1 in case of |
613 | * error. | |
5db5f44c OW |
614 | * |
615 | * @str: address string | |
233aa5c2 OW |
616 | * @callback: callback function that is called when connect completes, |
617 | * cannot be NULL. | |
618 | * @opaque: opaque for callback function | |
5db5f44c OW |
619 | * @errp: set in case of an error |
620 | * | |
233aa5c2 | 621 | * Returns: -1 on immediate error, file descriptor on success. |
5db5f44c | 622 | **/ |
233aa5c2 OW |
623 | int inet_nonblocking_connect(const char *str, |
624 | NonBlockingConnectHandler *callback, | |
625 | void *opaque, Error **errp) | |
5db5f44c OW |
626 | { |
627 | QemuOpts *opts; | |
628 | int sock = -1; | |
629 | ||
233aa5c2 OW |
630 | g_assert(callback != NULL); |
631 | ||
5db5f44c OW |
632 | opts = qemu_opts_create(&dummy_opts, NULL, 0, NULL); |
633 | if (inet_parse(opts, str) == 0) { | |
233aa5c2 | 634 | sock = inet_connect_opts(opts, errp, callback, opaque); |
a6ba35b3 AK |
635 | } else { |
636 | error_set(errp, QERR_SOCKET_CREATE_FAILED); | |
637 | } | |
f4c94c7c GH |
638 | qemu_opts_del(opts); |
639 | return sock; | |
640 | } | |
641 | ||
d247d25f AL |
642 | #ifndef _WIN32 |
643 | ||
7fc4e63e | 644 | int unix_listen_opts(QemuOpts *opts, Error **errp) |
d247d25f AL |
645 | { |
646 | struct sockaddr_un un; | |
62b6adfb GH |
647 | const char *path = qemu_opt_get(opts, "path"); |
648 | int sock, fd; | |
d247d25f | 649 | |
40ff6d7e | 650 | sock = qemu_socket(PF_UNIX, SOCK_STREAM, 0); |
d247d25f | 651 | if (sock < 0) { |
39b6efc8 VS |
652 | perror("socket(unix)"); |
653 | return -1; | |
d247d25f AL |
654 | } |
655 | ||
d247d25f AL |
656 | memset(&un, 0, sizeof(un)); |
657 | un.sun_family = AF_UNIX; | |
658 | if (path && strlen(path)) { | |
659 | snprintf(un.sun_path, sizeof(un.sun_path), "%s", path); | |
660 | } else { | |
661 | char *tmpdir = getenv("TMPDIR"); | |
662 | snprintf(un.sun_path, sizeof(un.sun_path), "%s/qemu-socket-XXXXXX", | |
663 | tmpdir ? tmpdir : "/tmp"); | |
664 | /* | |
665 | * This dummy fd usage silences the mktemp() unsecure warning. | |
666 | * Using mkstemp() doesn't make things more secure here | |
667 | * though. bind() complains about existing files, so we have | |
668 | * to unlink first and thus re-open the race window. The | |
669 | * worst case possible is bind() failing, i.e. a DoS attack. | |
670 | */ | |
671 | fd = mkstemp(un.sun_path); close(fd); | |
62b6adfb | 672 | qemu_opt_set(opts, "path", un.sun_path); |
d247d25f | 673 | } |
d247d25f AL |
674 | |
675 | unlink(un.sun_path); | |
676 | if (bind(sock, (struct sockaddr*) &un, sizeof(un)) < 0) { | |
677 | fprintf(stderr, "bind(unix:%s): %s\n", un.sun_path, strerror(errno)); | |
678 | goto err; | |
679 | } | |
680 | if (listen(sock, 1) < 0) { | |
681 | fprintf(stderr, "listen(unix:%s): %s\n", un.sun_path, strerror(errno)); | |
682 | goto err; | |
683 | } | |
684 | ||
d247d25f AL |
685 | return sock; |
686 | ||
687 | err: | |
d247d25f AL |
688 | closesocket(sock); |
689 | return -1; | |
690 | } | |
691 | ||
1fc05adf PB |
692 | int unix_connect_opts(QemuOpts *opts, Error **errp, |
693 | NonBlockingConnectHandler *callback, void *opaque) | |
d247d25f AL |
694 | { |
695 | struct sockaddr_un un; | |
2af2bf67 | 696 | const char *path = qemu_opt_get(opts, "path"); |
1fc05adf PB |
697 | ConnectState *connect_state = NULL; |
698 | int sock, rc; | |
d247d25f | 699 | |
2af2bf67 GH |
700 | if (NULL == path) { |
701 | fprintf(stderr, "unix connect: no path specified\n"); | |
702 | return -1; | |
703 | } | |
704 | ||
40ff6d7e | 705 | sock = qemu_socket(PF_UNIX, SOCK_STREAM, 0); |
d247d25f | 706 | if (sock < 0) { |
39b6efc8 VS |
707 | perror("socket(unix)"); |
708 | return -1; | |
d247d25f | 709 | } |
1fc05adf PB |
710 | if (callback != NULL) { |
711 | connect_state = g_malloc0(sizeof(*connect_state)); | |
712 | connect_state->callback = callback; | |
713 | connect_state->opaque = opaque; | |
714 | socket_set_nonblock(sock); | |
715 | } | |
d247d25f AL |
716 | |
717 | memset(&un, 0, sizeof(un)); | |
718 | un.sun_family = AF_UNIX; | |
719 | snprintf(un.sun_path, sizeof(un.sun_path), "%s", path); | |
1fc05adf PB |
720 | |
721 | /* connect to peer */ | |
722 | do { | |
723 | rc = 0; | |
724 | if (connect(sock, (struct sockaddr *) &un, sizeof(un)) < 0) { | |
725 | rc = -socket_error(); | |
726 | } | |
727 | } while (rc == -EINTR); | |
728 | ||
729 | if (connect_state != NULL && QEMU_SOCKET_RC_INPROGRESS(rc)) { | |
730 | connect_state->fd = sock; | |
731 | qemu_set_fd_handler2(sock, NULL, NULL, wait_for_connect, | |
732 | connect_state); | |
733 | return sock; | |
734 | } else if (rc >= 0) { | |
735 | /* non blocking socket immediate success, call callback */ | |
736 | if (callback != NULL) { | |
737 | callback(sock, opaque); | |
738 | } | |
739 | } | |
740 | ||
741 | if (rc < 0) { | |
d247d25f | 742 | fprintf(stderr, "connect(unix:%s): %s\n", path, strerror(errno)); |
9d947472 | 743 | close(sock); |
1fc05adf | 744 | sock = -1; |
d247d25f AL |
745 | } |
746 | ||
1fc05adf | 747 | g_free(connect_state); |
d247d25f AL |
748 | return sock; |
749 | } | |
750 | ||
0c814709 PB |
751 | #else |
752 | ||
753 | int unix_listen_opts(QemuOpts *opts, Error **errp) | |
754 | { | |
755 | fprintf(stderr, "unix sockets are not available on windows\n"); | |
756 | errno = ENOTSUP; | |
757 | return -1; | |
758 | } | |
759 | ||
1fc05adf PB |
760 | int unix_connect_opts(QemuOpts *opts, Error **errp, |
761 | NonBlockingConnectHandler *callback, void *opaque) | |
0c814709 PB |
762 | { |
763 | fprintf(stderr, "unix sockets are not available on windows\n"); | |
764 | errno = ENOTSUP; | |
765 | return -1; | |
766 | } | |
767 | #endif | |
768 | ||
2af2bf67 | 769 | /* compatibility wrapper */ |
7fc4e63e | 770 | int unix_listen(const char *str, char *ostr, int olen, Error **errp) |
62b6adfb GH |
771 | { |
772 | QemuOpts *opts; | |
773 | char *path, *optstr; | |
774 | int sock, len; | |
775 | ||
8be7e7e4 | 776 | opts = qemu_opts_create(&dummy_opts, NULL, 0, NULL); |
62b6adfb GH |
777 | |
778 | optstr = strchr(str, ','); | |
779 | if (optstr) { | |
780 | len = optstr - str; | |
781 | if (len) { | |
7267c094 | 782 | path = g_malloc(len+1); |
62b6adfb GH |
783 | snprintf(path, len+1, "%.*s", len, str); |
784 | qemu_opt_set(opts, "path", path); | |
7267c094 | 785 | g_free(path); |
62b6adfb GH |
786 | } |
787 | } else { | |
788 | qemu_opt_set(opts, "path", str); | |
789 | } | |
790 | ||
7fc4e63e | 791 | sock = unix_listen_opts(opts, errp); |
62b6adfb GH |
792 | |
793 | if (sock != -1 && ostr) | |
794 | snprintf(ostr, olen, "%s%s", qemu_opt_get(opts, "path"), optstr ? optstr : ""); | |
795 | qemu_opts_del(opts); | |
796 | return sock; | |
797 | } | |
798 | ||
7fc4e63e | 799 | int unix_connect(const char *path, Error **errp) |
2af2bf67 GH |
800 | { |
801 | QemuOpts *opts; | |
802 | int sock; | |
803 | ||
8be7e7e4 | 804 | opts = qemu_opts_create(&dummy_opts, NULL, 0, NULL); |
2af2bf67 | 805 | qemu_opt_set(opts, "path", path); |
1fc05adf PB |
806 | sock = unix_connect_opts(opts, errp, NULL, NULL); |
807 | qemu_opts_del(opts); | |
808 | return sock; | |
809 | } | |
810 | ||
811 | ||
812 | int unix_nonblocking_connect(const char *path, | |
813 | NonBlockingConnectHandler *callback, | |
814 | void *opaque, Error **errp) | |
815 | { | |
816 | QemuOpts *opts; | |
817 | int sock = -1; | |
818 | ||
819 | g_assert(callback != NULL); | |
820 | ||
821 | opts = qemu_opts_create(&dummy_opts, NULL, 0, NULL); | |
822 | qemu_opt_set(opts, "path", path); | |
823 | sock = unix_connect_opts(opts, errp, callback, opaque); | |
2af2bf67 GH |
824 | qemu_opts_del(opts); |
825 | return sock; | |
826 | } | |
827 | ||
0706a4dc PB |
828 | #ifdef _WIN32 |
829 | static void socket_cleanup(void) | |
830 | { | |
831 | WSACleanup(); | |
832 | } | |
833 | #endif | |
834 | ||
835 | int socket_init(void) | |
836 | { | |
837 | #ifdef _WIN32 | |
838 | WSADATA Data; | |
839 | int ret, err; | |
840 | ||
841 | ret = WSAStartup(MAKEWORD(2,2), &Data); | |
842 | if (ret != 0) { | |
843 | err = WSAGetLastError(); | |
844 | fprintf(stderr, "WSAStartup: %d\n", err); | |
845 | return -1; | |
846 | } | |
847 | atexit(socket_cleanup); | |
848 | #endif | |
849 | return 0; | |
850 | } |