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Commit | Line | Data |
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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. | |
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. | |
17 | */ | |
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" | |
26 | #include "qemu-common.h" /* for qemu_isdigit */ | |
27 | ||
28 | #ifndef AI_ADDRCONFIG | |
29 | # define AI_ADDRCONFIG 0 | |
30 | #endif | |
31 | ||
32 | static const int on=1, off=0; | |
33 | ||
34 | /* used temporarely until all users are converted to QemuOpts */ | |
35 | static QemuOptsList dummy_opts = { | |
36 | .name = "dummy", | |
37 | .head = QTAILQ_HEAD_INITIALIZER(dummy_opts.head), | |
38 | .desc = { | |
39 | { | |
40 | .name = "path", | |
41 | .type = QEMU_OPT_STRING, | |
42 | },{ | |
43 | .name = "host", | |
44 | .type = QEMU_OPT_STRING, | |
45 | },{ | |
46 | .name = "port", | |
47 | .type = QEMU_OPT_STRING, | |
48 | },{ | |
49 | .name = "to", | |
50 | .type = QEMU_OPT_NUMBER, | |
51 | },{ | |
52 | .name = "ipv4", | |
53 | .type = QEMU_OPT_BOOL, | |
54 | },{ | |
55 | .name = "ipv6", | |
56 | .type = QEMU_OPT_BOOL, | |
57 | },{ | |
58 | .name = "block", | |
59 | .type = QEMU_OPT_BOOL, | |
60 | }, | |
61 | { /* end if list */ } | |
62 | }, | |
63 | }; | |
64 | ||
65 | static int inet_getport(struct addrinfo *e) | |
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 | return ntohs(i6->sin6_port); | |
74 | case PF_INET: | |
75 | i4 = (void*)e->ai_addr; | |
76 | return ntohs(i4->sin_port); | |
77 | default: | |
78 | return 0; | |
79 | } | |
80 | } | |
81 | ||
82 | static void inet_setport(struct addrinfo *e, int port) | |
83 | { | |
84 | struct sockaddr_in *i4; | |
85 | struct sockaddr_in6 *i6; | |
86 | ||
87 | switch (e->ai_family) { | |
88 | case PF_INET6: | |
89 | i6 = (void*)e->ai_addr; | |
90 | i6->sin6_port = htons(port); | |
91 | break; | |
92 | case PF_INET: | |
93 | i4 = (void*)e->ai_addr; | |
94 | i4->sin_port = htons(port); | |
95 | break; | |
96 | } | |
97 | } | |
98 | ||
99 | const char *inet_strfamily(int family) | |
100 | { | |
101 | switch (family) { | |
102 | case PF_INET6: return "ipv6"; | |
103 | case PF_INET: return "ipv4"; | |
104 | case PF_UNIX: return "unix"; | |
105 | } | |
106 | return "unknown"; | |
107 | } | |
108 | ||
109 | int inet_listen_opts(QemuOpts *opts, int port_offset, Error **errp) | |
110 | { | |
111 | struct addrinfo ai,*res,*e; | |
112 | const char *addr; | |
113 | char port[33]; | |
114 | char uaddr[INET6_ADDRSTRLEN+1]; | |
115 | char uport[33]; | |
116 | int slisten, rc, to, port_min, port_max, p; | |
117 | ||
118 | memset(&ai,0, sizeof(ai)); | |
119 | ai.ai_flags = AI_PASSIVE | AI_ADDRCONFIG; | |
120 | ai.ai_family = PF_UNSPEC; | |
121 | ai.ai_socktype = SOCK_STREAM; | |
122 | ||
123 | if ((qemu_opt_get(opts, "host") == NULL) || | |
124 | (qemu_opt_get(opts, "port") == NULL)) { | |
125 | fprintf(stderr, "%s: host and/or port not specified\n", __FUNCTION__); | |
126 | error_set(errp, QERR_SOCKET_CREATE_FAILED); | |
127 | return -1; | |
128 | } | |
129 | pstrcpy(port, sizeof(port), qemu_opt_get(opts, "port")); | |
130 | addr = qemu_opt_get(opts, "host"); | |
131 | ||
132 | to = qemu_opt_get_number(opts, "to", 0); | |
133 | if (qemu_opt_get_bool(opts, "ipv4", 0)) | |
134 | ai.ai_family = PF_INET; | |
135 | if (qemu_opt_get_bool(opts, "ipv6", 0)) | |
136 | ai.ai_family = PF_INET6; | |
137 | ||
138 | /* lookup */ | |
139 | if (port_offset) | |
140 | snprintf(port, sizeof(port), "%d", atoi(port) + port_offset); | |
141 | rc = getaddrinfo(strlen(addr) ? addr : NULL, port, &ai, &res); | |
142 | if (rc != 0) { | |
143 | fprintf(stderr,"getaddrinfo(%s,%s): %s\n", addr, port, | |
144 | gai_strerror(rc)); | |
145 | error_set(errp, QERR_SOCKET_CREATE_FAILED); | |
146 | return -1; | |
147 | } | |
148 | ||
149 | /* create socket + bind */ | |
150 | for (e = res; e != NULL; e = e->ai_next) { | |
151 | getnameinfo((struct sockaddr*)e->ai_addr,e->ai_addrlen, | |
152 | uaddr,INET6_ADDRSTRLEN,uport,32, | |
153 | NI_NUMERICHOST | NI_NUMERICSERV); | |
154 | slisten = qemu_socket(e->ai_family, e->ai_socktype, e->ai_protocol); | |
155 | if (slisten < 0) { | |
156 | fprintf(stderr,"%s: socket(%s): %s\n", __FUNCTION__, | |
157 | inet_strfamily(e->ai_family), strerror(errno)); | |
158 | if (!e->ai_next) { | |
159 | error_set(errp, QERR_SOCKET_CREATE_FAILED); | |
160 | } | |
161 | continue; | |
162 | } | |
163 | ||
164 | setsockopt(slisten,SOL_SOCKET,SO_REUSEADDR,(void*)&on,sizeof(on)); | |
165 | #ifdef IPV6_V6ONLY | |
166 | if (e->ai_family == PF_INET6) { | |
167 | /* listen on both ipv4 and ipv6 */ | |
168 | setsockopt(slisten,IPPROTO_IPV6,IPV6_V6ONLY,(void*)&off, | |
169 | sizeof(off)); | |
170 | } | |
171 | #endif | |
172 | ||
173 | port_min = inet_getport(e); | |
174 | port_max = to ? to + port_offset : port_min; | |
175 | for (p = port_min; p <= port_max; p++) { | |
176 | inet_setport(e, p); | |
177 | if (bind(slisten, e->ai_addr, e->ai_addrlen) == 0) { | |
178 | goto listen; | |
179 | } | |
180 | if (p == port_max) { | |
181 | fprintf(stderr,"%s: bind(%s,%s,%d): %s\n", __FUNCTION__, | |
182 | inet_strfamily(e->ai_family), uaddr, inet_getport(e), | |
183 | strerror(errno)); | |
184 | if (!e->ai_next) { | |
185 | error_set(errp, QERR_SOCKET_BIND_FAILED); | |
186 | } | |
187 | } | |
188 | } | |
189 | closesocket(slisten); | |
190 | } | |
191 | fprintf(stderr, "%s: FAILED\n", __FUNCTION__); | |
192 | freeaddrinfo(res); | |
193 | return -1; | |
194 | ||
195 | listen: | |
196 | if (listen(slisten,1) != 0) { | |
197 | error_set(errp, QERR_SOCKET_LISTEN_FAILED); | |
198 | perror("listen"); | |
199 | closesocket(slisten); | |
200 | freeaddrinfo(res); | |
201 | return -1; | |
202 | } | |
203 | snprintf(uport, sizeof(uport), "%d", inet_getport(e) - port_offset); | |
204 | qemu_opt_set(opts, "host", uaddr); | |
205 | qemu_opt_set(opts, "port", uport); | |
206 | qemu_opt_set(opts, "ipv6", (e->ai_family == PF_INET6) ? "on" : "off"); | |
207 | qemu_opt_set(opts, "ipv4", (e->ai_family != PF_INET6) ? "on" : "off"); | |
208 | freeaddrinfo(res); | |
209 | return slisten; | |
210 | } | |
211 | ||
212 | int inet_connect_opts(QemuOpts *opts, bool *in_progress, Error **errp) | |
213 | { | |
214 | struct addrinfo ai,*res,*e; | |
215 | const char *addr; | |
216 | const char *port; | |
217 | char uaddr[INET6_ADDRSTRLEN+1]; | |
218 | char uport[33]; | |
219 | int sock,rc; | |
220 | bool block; | |
221 | ||
222 | memset(&ai,0, sizeof(ai)); | |
223 | ai.ai_flags = AI_CANONNAME | AI_ADDRCONFIG; | |
224 | ai.ai_family = PF_UNSPEC; | |
225 | ai.ai_socktype = SOCK_STREAM; | |
226 | ||
227 | if (in_progress) { | |
228 | *in_progress = false; | |
229 | } | |
230 | ||
231 | addr = qemu_opt_get(opts, "host"); | |
232 | port = qemu_opt_get(opts, "port"); | |
233 | block = qemu_opt_get_bool(opts, "block", 0); | |
234 | if (addr == NULL || port == NULL) { | |
235 | fprintf(stderr, "inet_connect: host and/or port not specified\n"); | |
236 | error_set(errp, QERR_SOCKET_CREATE_FAILED); | |
237 | return -1; | |
238 | } | |
239 | ||
240 | if (qemu_opt_get_bool(opts, "ipv4", 0)) | |
241 | ai.ai_family = PF_INET; | |
242 | if (qemu_opt_get_bool(opts, "ipv6", 0)) | |
243 | ai.ai_family = PF_INET6; | |
244 | ||
245 | /* lookup */ | |
246 | if (0 != (rc = getaddrinfo(addr, port, &ai, &res))) { | |
247 | fprintf(stderr,"getaddrinfo(%s,%s): %s\n", addr, port, | |
248 | gai_strerror(rc)); | |
249 | error_set(errp, QERR_SOCKET_CREATE_FAILED); | |
250 | return -1; | |
251 | } | |
252 | ||
253 | for (e = res; e != NULL; e = e->ai_next) { | |
254 | if (getnameinfo((struct sockaddr*)e->ai_addr,e->ai_addrlen, | |
255 | uaddr,INET6_ADDRSTRLEN,uport,32, | |
256 | NI_NUMERICHOST | NI_NUMERICSERV) != 0) { | |
257 | fprintf(stderr,"%s: getnameinfo: oops\n", __FUNCTION__); | |
258 | continue; | |
259 | } | |
260 | sock = qemu_socket(e->ai_family, e->ai_socktype, e->ai_protocol); | |
261 | if (sock < 0) { | |
262 | fprintf(stderr,"%s: socket(%s): %s\n", __FUNCTION__, | |
263 | inet_strfamily(e->ai_family), strerror(errno)); | |
264 | continue; | |
265 | } | |
266 | setsockopt(sock,SOL_SOCKET,SO_REUSEADDR,(void*)&on,sizeof(on)); | |
267 | if (!block) { | |
268 | socket_set_nonblock(sock); | |
269 | } | |
270 | /* connect to peer */ | |
271 | do { | |
272 | rc = 0; | |
273 | if (connect(sock, e->ai_addr, e->ai_addrlen) < 0) { | |
274 | rc = -socket_error(); | |
275 | } | |
276 | } while (rc == -EINTR); | |
277 | ||
278 | #ifdef _WIN32 | |
279 | if (!block && (rc == -EINPROGRESS || rc == -EWOULDBLOCK | |
280 | || rc == -WSAEALREADY)) { | |
281 | #else | |
282 | if (!block && (rc == -EINPROGRESS)) { | |
283 | #endif | |
284 | if (in_progress) { | |
285 | *in_progress = true; | |
286 | } | |
287 | } else if (rc < 0) { | |
288 | if (NULL == e->ai_next) | |
289 | fprintf(stderr, "%s: connect(%s,%s,%s,%s): %s\n", __FUNCTION__, | |
290 | inet_strfamily(e->ai_family), | |
291 | e->ai_canonname, uaddr, uport, strerror(errno)); | |
292 | closesocket(sock); | |
293 | continue; | |
294 | } | |
295 | freeaddrinfo(res); | |
296 | return sock; | |
297 | } | |
298 | error_set(errp, QERR_SOCKET_CONNECT_FAILED); | |
299 | freeaddrinfo(res); | |
300 | return -1; | |
301 | } | |
302 | ||
303 | int inet_dgram_opts(QemuOpts *opts) | |
304 | { | |
305 | struct addrinfo ai, *peer = NULL, *local = NULL; | |
306 | const char *addr; | |
307 | const char *port; | |
308 | char uaddr[INET6_ADDRSTRLEN+1]; | |
309 | char uport[33]; | |
310 | int sock = -1, rc; | |
311 | ||
312 | /* lookup peer addr */ | |
313 | memset(&ai,0, sizeof(ai)); | |
314 | ai.ai_flags = AI_CANONNAME | AI_ADDRCONFIG; | |
315 | ai.ai_family = PF_UNSPEC; | |
316 | ai.ai_socktype = SOCK_DGRAM; | |
317 | ||
318 | addr = qemu_opt_get(opts, "host"); | |
319 | port = qemu_opt_get(opts, "port"); | |
320 | if (addr == NULL || strlen(addr) == 0) { | |
321 | addr = "localhost"; | |
322 | } | |
323 | if (port == NULL || strlen(port) == 0) { | |
324 | fprintf(stderr, "inet_dgram: port not specified\n"); | |
325 | return -1; | |
326 | } | |
327 | ||
328 | if (qemu_opt_get_bool(opts, "ipv4", 0)) | |
329 | ai.ai_family = PF_INET; | |
330 | if (qemu_opt_get_bool(opts, "ipv6", 0)) | |
331 | ai.ai_family = PF_INET6; | |
332 | ||
333 | if (0 != (rc = getaddrinfo(addr, port, &ai, &peer))) { | |
334 | fprintf(stderr,"getaddrinfo(%s,%s): %s\n", addr, port, | |
335 | gai_strerror(rc)); | |
336 | return -1; | |
337 | } | |
338 | ||
339 | /* lookup local addr */ | |
340 | memset(&ai,0, sizeof(ai)); | |
341 | ai.ai_flags = AI_PASSIVE; | |
342 | ai.ai_family = peer->ai_family; | |
343 | ai.ai_socktype = SOCK_DGRAM; | |
344 | ||
345 | addr = qemu_opt_get(opts, "localaddr"); | |
346 | port = qemu_opt_get(opts, "localport"); | |
347 | if (addr == NULL || strlen(addr) == 0) { | |
348 | addr = NULL; | |
349 | } | |
350 | if (!port || strlen(port) == 0) | |
351 | port = "0"; | |
352 | ||
353 | if (0 != (rc = getaddrinfo(addr, port, &ai, &local))) { | |
354 | fprintf(stderr,"getaddrinfo(%s,%s): %s\n", addr, port, | |
355 | gai_strerror(rc)); | |
356 | return -1; | |
357 | } | |
358 | ||
359 | /* create socket */ | |
360 | sock = qemu_socket(peer->ai_family, peer->ai_socktype, peer->ai_protocol); | |
361 | if (sock < 0) { | |
362 | fprintf(stderr,"%s: socket(%s): %s\n", __FUNCTION__, | |
363 | inet_strfamily(peer->ai_family), strerror(errno)); | |
364 | goto err; | |
365 | } | |
366 | setsockopt(sock,SOL_SOCKET,SO_REUSEADDR,(void*)&on,sizeof(on)); | |
367 | ||
368 | /* bind socket */ | |
369 | if (getnameinfo((struct sockaddr*)local->ai_addr,local->ai_addrlen, | |
370 | uaddr,INET6_ADDRSTRLEN,uport,32, | |
371 | NI_NUMERICHOST | NI_NUMERICSERV) != 0) { | |
372 | fprintf(stderr, "%s: getnameinfo: oops\n", __FUNCTION__); | |
373 | goto err; | |
374 | } | |
375 | if (bind(sock, local->ai_addr, local->ai_addrlen) < 0) { | |
376 | fprintf(stderr,"%s: bind(%s,%s,%d): OK\n", __FUNCTION__, | |
377 | inet_strfamily(local->ai_family), uaddr, inet_getport(local)); | |
378 | goto err; | |
379 | } | |
380 | ||
381 | /* connect to peer */ | |
382 | if (getnameinfo((struct sockaddr*)peer->ai_addr, peer->ai_addrlen, | |
383 | uaddr, INET6_ADDRSTRLEN, uport, 32, | |
384 | NI_NUMERICHOST | NI_NUMERICSERV) != 0) { | |
385 | fprintf(stderr, "%s: getnameinfo: oops\n", __FUNCTION__); | |
386 | goto err; | |
387 | } | |
388 | if (connect(sock,peer->ai_addr,peer->ai_addrlen) < 0) { | |
389 | fprintf(stderr, "%s: connect(%s,%s,%s,%s): %s\n", __FUNCTION__, | |
390 | inet_strfamily(peer->ai_family), | |
391 | peer->ai_canonname, uaddr, uport, strerror(errno)); | |
392 | goto err; | |
393 | } | |
394 | ||
395 | freeaddrinfo(local); | |
396 | freeaddrinfo(peer); | |
397 | return sock; | |
398 | ||
399 | err: | |
400 | if (-1 != sock) | |
401 | closesocket(sock); | |
402 | if (local) | |
403 | freeaddrinfo(local); | |
404 | if (peer) | |
405 | freeaddrinfo(peer); | |
406 | return -1; | |
407 | } | |
408 | ||
409 | /* compatibility wrapper */ | |
410 | static int inet_parse(QemuOpts *opts, const char *str) | |
411 | { | |
412 | const char *optstr, *h; | |
413 | char addr[64]; | |
414 | char port[33]; | |
415 | int pos; | |
416 | ||
417 | /* parse address */ | |
418 | if (str[0] == ':') { | |
419 | /* no host given */ | |
420 | addr[0] = '\0'; | |
421 | if (1 != sscanf(str,":%32[^,]%n",port,&pos)) { | |
422 | fprintf(stderr, "%s: portonly parse error (%s)\n", | |
423 | __FUNCTION__, str); | |
424 | return -1; | |
425 | } | |
426 | } else if (str[0] == '[') { | |
427 | /* IPv6 addr */ | |
428 | if (2 != sscanf(str,"[%64[^]]]:%32[^,]%n",addr,port,&pos)) { | |
429 | fprintf(stderr, "%s: ipv6 parse error (%s)\n", | |
430 | __FUNCTION__, str); | |
431 | return -1; | |
432 | } | |
433 | qemu_opt_set(opts, "ipv6", "on"); | |
434 | } else if (qemu_isdigit(str[0])) { | |
435 | /* IPv4 addr */ | |
436 | if (2 != sscanf(str,"%64[0-9.]:%32[^,]%n",addr,port,&pos)) { | |
437 | fprintf(stderr, "%s: ipv4 parse error (%s)\n", | |
438 | __FUNCTION__, str); | |
439 | return -1; | |
440 | } | |
441 | qemu_opt_set(opts, "ipv4", "on"); | |
442 | } else { | |
443 | /* hostname */ | |
444 | if (2 != sscanf(str,"%64[^:]:%32[^,]%n",addr,port,&pos)) { | |
445 | fprintf(stderr, "%s: hostname parse error (%s)\n", | |
446 | __FUNCTION__, str); | |
447 | return -1; | |
448 | } | |
449 | } | |
450 | qemu_opt_set(opts, "host", addr); | |
451 | qemu_opt_set(opts, "port", port); | |
452 | ||
453 | /* parse options */ | |
454 | optstr = str + pos; | |
455 | h = strstr(optstr, ",to="); | |
456 | if (h) | |
457 | qemu_opt_set(opts, "to", h+4); | |
458 | if (strstr(optstr, ",ipv4")) | |
459 | qemu_opt_set(opts, "ipv4", "on"); | |
460 | if (strstr(optstr, ",ipv6")) | |
461 | qemu_opt_set(opts, "ipv6", "on"); | |
462 | return 0; | |
463 | } | |
464 | ||
465 | int inet_listen(const char *str, char *ostr, int olen, | |
466 | int socktype, int port_offset, Error **errp) | |
467 | { | |
468 | QemuOpts *opts; | |
469 | char *optstr; | |
470 | int sock = -1; | |
471 | ||
472 | opts = qemu_opts_create(&dummy_opts, NULL, 0, NULL); | |
473 | if (inet_parse(opts, str) == 0) { | |
474 | sock = inet_listen_opts(opts, port_offset, errp); | |
475 | if (sock != -1 && ostr) { | |
476 | optstr = strchr(str, ','); | |
477 | if (qemu_opt_get_bool(opts, "ipv6", 0)) { | |
478 | snprintf(ostr, olen, "[%s]:%s%s", | |
479 | qemu_opt_get(opts, "host"), | |
480 | qemu_opt_get(opts, "port"), | |
481 | optstr ? optstr : ""); | |
482 | } else { | |
483 | snprintf(ostr, olen, "%s:%s%s", | |
484 | qemu_opt_get(opts, "host"), | |
485 | qemu_opt_get(opts, "port"), | |
486 | optstr ? optstr : ""); | |
487 | } | |
488 | } | |
489 | } else { | |
490 | error_set(errp, QERR_SOCKET_CREATE_FAILED); | |
491 | } | |
492 | qemu_opts_del(opts); | |
493 | return sock; | |
494 | } | |
495 | ||
496 | int inet_connect(const char *str, bool block, bool *in_progress, Error **errp) | |
497 | { | |
498 | QemuOpts *opts; | |
499 | int sock = -1; | |
500 | ||
501 | opts = qemu_opts_create(&dummy_opts, NULL, 0, NULL); | |
502 | if (inet_parse(opts, str) == 0) { | |
503 | if (block) { | |
504 | qemu_opt_set(opts, "block", "on"); | |
505 | } | |
506 | sock = inet_connect_opts(opts, in_progress, errp); | |
507 | } else { | |
508 | error_set(errp, QERR_SOCKET_CREATE_FAILED); | |
509 | } | |
510 | qemu_opts_del(opts); | |
511 | return sock; | |
512 | } | |
513 | ||
514 | #ifndef _WIN32 | |
515 | ||
516 | int unix_listen_opts(QemuOpts *opts) | |
517 | { | |
518 | struct sockaddr_un un; | |
519 | const char *path = qemu_opt_get(opts, "path"); | |
520 | int sock, fd; | |
521 | ||
522 | sock = qemu_socket(PF_UNIX, SOCK_STREAM, 0); | |
523 | if (sock < 0) { | |
524 | perror("socket(unix)"); | |
525 | return -1; | |
526 | } | |
527 | ||
528 | memset(&un, 0, sizeof(un)); | |
529 | un.sun_family = AF_UNIX; | |
530 | if (path && strlen(path)) { | |
531 | snprintf(un.sun_path, sizeof(un.sun_path), "%s", path); | |
532 | } else { | |
533 | char *tmpdir = getenv("TMPDIR"); | |
534 | snprintf(un.sun_path, sizeof(un.sun_path), "%s/qemu-socket-XXXXXX", | |
535 | tmpdir ? tmpdir : "/tmp"); | |
536 | /* | |
537 | * This dummy fd usage silences the mktemp() unsecure warning. | |
538 | * Using mkstemp() doesn't make things more secure here | |
539 | * though. bind() complains about existing files, so we have | |
540 | * to unlink first and thus re-open the race window. The | |
541 | * worst case possible is bind() failing, i.e. a DoS attack. | |
542 | */ | |
543 | fd = mkstemp(un.sun_path); close(fd); | |
544 | qemu_opt_set(opts, "path", un.sun_path); | |
545 | } | |
546 | ||
547 | unlink(un.sun_path); | |
548 | if (bind(sock, (struct sockaddr*) &un, sizeof(un)) < 0) { | |
549 | fprintf(stderr, "bind(unix:%s): %s\n", un.sun_path, strerror(errno)); | |
550 | goto err; | |
551 | } | |
552 | if (listen(sock, 1) < 0) { | |
553 | fprintf(stderr, "listen(unix:%s): %s\n", un.sun_path, strerror(errno)); | |
554 | goto err; | |
555 | } | |
556 | ||
557 | return sock; | |
558 | ||
559 | err: | |
560 | closesocket(sock); | |
561 | return -1; | |
562 | } | |
563 | ||
564 | int unix_connect_opts(QemuOpts *opts) | |
565 | { | |
566 | struct sockaddr_un un; | |
567 | const char *path = qemu_opt_get(opts, "path"); | |
568 | int sock; | |
569 | ||
570 | if (NULL == path) { | |
571 | fprintf(stderr, "unix connect: no path specified\n"); | |
572 | return -1; | |
573 | } | |
574 | ||
575 | sock = qemu_socket(PF_UNIX, SOCK_STREAM, 0); | |
576 | if (sock < 0) { | |
577 | perror("socket(unix)"); | |
578 | return -1; | |
579 | } | |
580 | ||
581 | memset(&un, 0, sizeof(un)); | |
582 | un.sun_family = AF_UNIX; | |
583 | snprintf(un.sun_path, sizeof(un.sun_path), "%s", path); | |
584 | if (connect(sock, (struct sockaddr*) &un, sizeof(un)) < 0) { | |
585 | fprintf(stderr, "connect(unix:%s): %s\n", path, strerror(errno)); | |
586 | close(sock); | |
587 | return -1; | |
588 | } | |
589 | ||
590 | return sock; | |
591 | } | |
592 | ||
593 | /* compatibility wrapper */ | |
594 | int unix_listen(const char *str, char *ostr, int olen) | |
595 | { | |
596 | QemuOpts *opts; | |
597 | char *path, *optstr; | |
598 | int sock, len; | |
599 | ||
600 | opts = qemu_opts_create(&dummy_opts, NULL, 0, NULL); | |
601 | ||
602 | optstr = strchr(str, ','); | |
603 | if (optstr) { | |
604 | len = optstr - str; | |
605 | if (len) { | |
606 | path = g_malloc(len+1); | |
607 | snprintf(path, len+1, "%.*s", len, str); | |
608 | qemu_opt_set(opts, "path", path); | |
609 | g_free(path); | |
610 | } | |
611 | } else { | |
612 | qemu_opt_set(opts, "path", str); | |
613 | } | |
614 | ||
615 | sock = unix_listen_opts(opts); | |
616 | ||
617 | if (sock != -1 && ostr) | |
618 | snprintf(ostr, olen, "%s%s", qemu_opt_get(opts, "path"), optstr ? optstr : ""); | |
619 | qemu_opts_del(opts); | |
620 | return sock; | |
621 | } | |
622 | ||
623 | int unix_connect(const char *path) | |
624 | { | |
625 | QemuOpts *opts; | |
626 | int sock; | |
627 | ||
628 | opts = qemu_opts_create(&dummy_opts, NULL, 0, NULL); | |
629 | qemu_opt_set(opts, "path", path); | |
630 | sock = unix_connect_opts(opts); | |
631 | qemu_opts_del(opts); | |
632 | return sock; | |
633 | } | |
634 | ||
635 | #else | |
636 | ||
637 | int unix_listen_opts(QemuOpts *opts) | |
638 | { | |
639 | fprintf(stderr, "unix sockets are not available on windows\n"); | |
640 | errno = ENOTSUP; | |
641 | return -1; | |
642 | } | |
643 | ||
644 | int unix_connect_opts(QemuOpts *opts) | |
645 | { | |
646 | fprintf(stderr, "unix sockets are not available on windows\n"); | |
647 | errno = ENOTSUP; | |
648 | return -1; | |
649 | } | |
650 | ||
651 | int unix_listen(const char *path, char *ostr, int olen) | |
652 | { | |
653 | fprintf(stderr, "unix sockets are not available on windows\n"); | |
654 | errno = ENOTSUP; | |
655 | return -1; | |
656 | } | |
657 | ||
658 | int unix_connect(const char *path) | |
659 | { | |
660 | fprintf(stderr, "unix sockets are not available on windows\n"); | |
661 | errno = ENOTSUP; | |
662 | return -1; | |
663 | } | |
664 | ||
665 | #endif | |
666 | ||
667 | #ifdef _WIN32 | |
668 | static void socket_cleanup(void) | |
669 | { | |
670 | WSACleanup(); | |
671 | } | |
672 | #endif | |
673 | ||
674 | int socket_init(void) | |
675 | { | |
676 | #ifdef _WIN32 | |
677 | WSADATA Data; | |
678 | int ret, err; | |
679 | ||
680 | ret = WSAStartup(MAKEWORD(2,2), &Data); | |
681 | if (ret != 0) { | |
682 | err = WSAGetLastError(); | |
683 | fprintf(stderr, "WSAStartup: %d\n", err); | |
684 | return -1; | |
685 | } | |
686 | atexit(socket_cleanup); | |
687 | #endif | |
688 | return 0; | |
689 | } |