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63a01ef8 AL |
1 | /* |
2 | * QEMU System Emulator | |
3 | * | |
4 | * Copyright (c) 2003-2008 Fabrice Bellard | |
5 | * | |
6 | * Permission is hereby granted, free of charge, to any person obtaining a copy | |
7 | * of this software and associated documentation files (the "Software"), to deal | |
8 | * in the Software without restriction, including without limitation the rights | |
9 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
10 | * copies of the Software, and to permit persons to whom the Software is | |
11 | * furnished to do so, subject to the following conditions: | |
12 | * | |
13 | * The above copyright notice and this permission notice shall be included in | |
14 | * all copies or substantial portions of the Software. | |
15 | * | |
16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
17 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
19 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
20 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
21 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN | |
22 | * THE SOFTWARE. | |
23 | */ | |
559b90fb | 24 | #include "qemu-common.h" |
63a01ef8 AL |
25 | #include "net.h" |
26 | #include "console.h" | |
27 | #include "sysemu.h" | |
63a01ef8 AL |
28 | #include "qemu-timer.h" |
29 | #include "qemu-char.h" | |
63a01ef8 | 30 | #include "audio/audio.h" |
63a01ef8 AL |
31 | |
32 | #include <unistd.h> | |
33 | #include <fcntl.h> | |
34 | #include <signal.h> | |
35 | #include <time.h> | |
36 | #include <errno.h> | |
37 | #include <sys/time.h> | |
38 | #include <zlib.h> | |
39 | ||
40 | #ifndef _WIN32 | |
41 | #include <sys/times.h> | |
42 | #include <sys/wait.h> | |
43 | #include <termios.h> | |
44 | #include <sys/mman.h> | |
45 | #include <sys/ioctl.h> | |
24646c7e | 46 | #include <sys/resource.h> |
63a01ef8 AL |
47 | #include <sys/socket.h> |
48 | #include <netinet/in.h> | |
24646c7e BS |
49 | #include <net/if.h> |
50 | #ifdef __NetBSD__ | |
51 | #include <net/if_tap.h> | |
52 | #endif | |
53 | #ifdef __linux__ | |
54 | #include <linux/if_tun.h> | |
55 | #endif | |
56 | #include <arpa/inet.h> | |
63a01ef8 AL |
57 | #include <dirent.h> |
58 | #include <netdb.h> | |
59 | #include <sys/select.h> | |
63a01ef8 AL |
60 | #ifdef _BSD |
61 | #include <sys/stat.h> | |
24646c7e | 62 | #ifdef __FreeBSD__ |
63a01ef8 | 63 | #include <libutil.h> |
24646c7e BS |
64 | #else |
65 | #include <util.h> | |
63a01ef8 AL |
66 | #endif |
67 | #elif defined (__GLIBC__) && defined (__FreeBSD_kernel__) | |
68 | #include <freebsd/stdlib.h> | |
69 | #else | |
70 | #ifdef __linux__ | |
63a01ef8 AL |
71 | #include <pty.h> |
72 | #include <malloc.h> | |
73 | #include <linux/rtc.h> | |
74 | ||
75 | /* For the benefit of older linux systems which don't supply it, | |
76 | we use a local copy of hpet.h. */ | |
77 | /* #include <linux/hpet.h> */ | |
78 | #include "hpet.h" | |
79 | ||
80 | #include <linux/ppdev.h> | |
81 | #include <linux/parport.h> | |
82 | #endif | |
83 | #ifdef __sun__ | |
84 | #include <sys/stat.h> | |
85 | #include <sys/ethernet.h> | |
86 | #include <sys/sockio.h> | |
87 | #include <netinet/arp.h> | |
88 | #include <netinet/in.h> | |
89 | #include <netinet/in_systm.h> | |
90 | #include <netinet/ip.h> | |
91 | #include <netinet/ip_icmp.h> // must come after ip.h | |
92 | #include <netinet/udp.h> | |
93 | #include <netinet/tcp.h> | |
94 | #include <net/if.h> | |
95 | #include <syslog.h> | |
96 | #include <stropts.h> | |
97 | #endif | |
98 | #endif | |
99 | #endif | |
100 | ||
101 | #include "qemu_socket.h" | |
102 | ||
103 | #if defined(CONFIG_SLIRP) | |
104 | #include "libslirp.h" | |
105 | #endif | |
106 | ||
107 | #if defined(__OpenBSD__) | |
108 | #include <util.h> | |
109 | #endif | |
110 | ||
111 | #if defined(CONFIG_VDE) | |
112 | #include <libvdeplug.h> | |
113 | #endif | |
114 | ||
115 | #ifdef _WIN32 | |
116 | #include <malloc.h> | |
117 | #include <sys/timeb.h> | |
118 | #include <mmsystem.h> | |
119 | #define getopt_long_only getopt_long | |
120 | #define memalign(align, size) malloc(size) | |
121 | #endif | |
122 | ||
63a01ef8 AL |
123 | static VLANState *first_vlan; |
124 | ||
125 | /***********************************************************/ | |
126 | /* network device redirectors */ | |
127 | ||
128 | #if defined(DEBUG_NET) || defined(DEBUG_SLIRP) | |
129 | static void hex_dump(FILE *f, const uint8_t *buf, int size) | |
130 | { | |
131 | int len, i, j, c; | |
132 | ||
133 | for(i=0;i<size;i+=16) { | |
134 | len = size - i; | |
135 | if (len > 16) | |
136 | len = 16; | |
137 | fprintf(f, "%08x ", i); | |
138 | for(j=0;j<16;j++) { | |
139 | if (j < len) | |
140 | fprintf(f, " %02x", buf[i+j]); | |
141 | else | |
142 | fprintf(f, " "); | |
143 | } | |
144 | fprintf(f, " "); | |
145 | for(j=0;j<len;j++) { | |
146 | c = buf[i+j]; | |
147 | if (c < ' ' || c > '~') | |
148 | c = '.'; | |
149 | fprintf(f, "%c", c); | |
150 | } | |
151 | fprintf(f, "\n"); | |
152 | } | |
153 | } | |
154 | #endif | |
155 | ||
156 | static int parse_macaddr(uint8_t *macaddr, const char *p) | |
157 | { | |
158 | int i; | |
159 | char *last_char; | |
160 | long int offset; | |
161 | ||
162 | errno = 0; | |
163 | offset = strtol(p, &last_char, 0); | |
164 | if (0 == errno && '\0' == *last_char && | |
165 | offset >= 0 && offset <= 0xFFFFFF) { | |
166 | macaddr[3] = (offset & 0xFF0000) >> 16; | |
167 | macaddr[4] = (offset & 0xFF00) >> 8; | |
168 | macaddr[5] = offset & 0xFF; | |
169 | return 0; | |
170 | } else { | |
171 | for(i = 0; i < 6; i++) { | |
172 | macaddr[i] = strtol(p, (char **)&p, 16); | |
173 | if (i == 5) { | |
174 | if (*p != '\0') | |
175 | return -1; | |
176 | } else { | |
177 | if (*p != ':' && *p != '-') | |
178 | return -1; | |
179 | p++; | |
180 | } | |
181 | } | |
182 | return 0; | |
183 | } | |
184 | ||
185 | return -1; | |
186 | } | |
187 | ||
188 | static int get_str_sep(char *buf, int buf_size, const char **pp, int sep) | |
189 | { | |
190 | const char *p, *p1; | |
191 | int len; | |
192 | p = *pp; | |
193 | p1 = strchr(p, sep); | |
194 | if (!p1) | |
195 | return -1; | |
196 | len = p1 - p; | |
197 | p1++; | |
198 | if (buf_size > 0) { | |
199 | if (len > buf_size - 1) | |
200 | len = buf_size - 1; | |
201 | memcpy(buf, p, len); | |
202 | buf[len] = '\0'; | |
203 | } | |
204 | *pp = p1; | |
205 | return 0; | |
206 | } | |
207 | ||
208 | int parse_host_src_port(struct sockaddr_in *haddr, | |
209 | struct sockaddr_in *saddr, | |
210 | const char *input_str) | |
211 | { | |
212 | char *str = strdup(input_str); | |
213 | char *host_str = str; | |
214 | char *src_str; | |
215 | const char *src_str2; | |
216 | char *ptr; | |
217 | ||
218 | /* | |
219 | * Chop off any extra arguments at the end of the string which | |
220 | * would start with a comma, then fill in the src port information | |
221 | * if it was provided else use the "any address" and "any port". | |
222 | */ | |
223 | if ((ptr = strchr(str,','))) | |
224 | *ptr = '\0'; | |
225 | ||
226 | if ((src_str = strchr(input_str,'@'))) { | |
227 | *src_str = '\0'; | |
228 | src_str++; | |
229 | } | |
230 | ||
231 | if (parse_host_port(haddr, host_str) < 0) | |
232 | goto fail; | |
233 | ||
234 | src_str2 = src_str; | |
235 | if (!src_str || *src_str == '\0') | |
236 | src_str2 = ":0"; | |
237 | ||
238 | if (parse_host_port(saddr, src_str2) < 0) | |
239 | goto fail; | |
240 | ||
241 | free(str); | |
242 | return(0); | |
243 | ||
244 | fail: | |
245 | free(str); | |
246 | return -1; | |
247 | } | |
248 | ||
249 | int parse_host_port(struct sockaddr_in *saddr, const char *str) | |
250 | { | |
251 | char buf[512]; | |
252 | struct hostent *he; | |
253 | const char *p, *r; | |
254 | int port; | |
255 | ||
256 | p = str; | |
257 | if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) | |
258 | return -1; | |
259 | saddr->sin_family = AF_INET; | |
260 | if (buf[0] == '\0') { | |
261 | saddr->sin_addr.s_addr = 0; | |
262 | } else { | |
cd390083 | 263 | if (qemu_isdigit(buf[0])) { |
63a01ef8 AL |
264 | if (!inet_aton(buf, &saddr->sin_addr)) |
265 | return -1; | |
266 | } else { | |
267 | if ((he = gethostbyname(buf)) == NULL) | |
268 | return - 1; | |
269 | saddr->sin_addr = *(struct in_addr *)he->h_addr; | |
270 | } | |
271 | } | |
272 | port = strtol(p, (char **)&r, 0); | |
273 | if (r == p) | |
274 | return -1; | |
275 | saddr->sin_port = htons(port); | |
276 | return 0; | |
277 | } | |
278 | ||
69d6451c BS |
279 | #if !defined(_WIN32) && 0 |
280 | static int parse_unix_path(struct sockaddr_un *uaddr, const char *str) | |
63a01ef8 AL |
281 | { |
282 | const char *p; | |
283 | int len; | |
284 | ||
285 | len = MIN(108, strlen(str)); | |
286 | p = strchr(str, ','); | |
287 | if (p) | |
288 | len = MIN(len, p - str); | |
289 | ||
290 | memset(uaddr, 0, sizeof(*uaddr)); | |
291 | ||
292 | uaddr->sun_family = AF_UNIX; | |
293 | memcpy(uaddr->sun_path, str, len); | |
294 | ||
295 | return 0; | |
296 | } | |
297 | #endif | |
298 | ||
299 | VLANClientState *qemu_new_vlan_client(VLANState *vlan, | |
300 | IOReadHandler *fd_read, | |
301 | IOCanRWHandler *fd_can_read, | |
302 | void *opaque) | |
303 | { | |
304 | VLANClientState *vc, **pvc; | |
305 | vc = qemu_mallocz(sizeof(VLANClientState)); | |
306 | if (!vc) | |
307 | return NULL; | |
308 | vc->fd_read = fd_read; | |
309 | vc->fd_can_read = fd_can_read; | |
310 | vc->opaque = opaque; | |
311 | vc->vlan = vlan; | |
312 | ||
313 | vc->next = NULL; | |
314 | pvc = &vlan->first_client; | |
315 | while (*pvc != NULL) | |
316 | pvc = &(*pvc)->next; | |
317 | *pvc = vc; | |
318 | return vc; | |
319 | } | |
320 | ||
321 | void qemu_del_vlan_client(VLANClientState *vc) | |
322 | { | |
323 | VLANClientState **pvc = &vc->vlan->first_client; | |
324 | ||
325 | while (*pvc != NULL) | |
326 | if (*pvc == vc) { | |
327 | *pvc = vc->next; | |
328 | free(vc); | |
329 | break; | |
330 | } else | |
331 | pvc = &(*pvc)->next; | |
332 | } | |
333 | ||
334 | int qemu_can_send_packet(VLANClientState *vc1) | |
335 | { | |
336 | VLANState *vlan = vc1->vlan; | |
337 | VLANClientState *vc; | |
338 | ||
339 | for(vc = vlan->first_client; vc != NULL; vc = vc->next) { | |
340 | if (vc != vc1) { | |
341 | if (vc->fd_can_read && vc->fd_can_read(vc->opaque)) | |
342 | return 1; | |
343 | } | |
344 | } | |
345 | return 0; | |
346 | } | |
347 | ||
348 | void qemu_send_packet(VLANClientState *vc1, const uint8_t *buf, int size) | |
349 | { | |
350 | VLANState *vlan = vc1->vlan; | |
351 | VLANClientState *vc; | |
352 | ||
353 | #ifdef DEBUG_NET | |
354 | printf("vlan %d send:\n", vlan->id); | |
355 | hex_dump(stdout, buf, size); | |
356 | #endif | |
357 | for(vc = vlan->first_client; vc != NULL; vc = vc->next) { | |
358 | if (vc != vc1) { | |
359 | vc->fd_read(vc->opaque, buf, size); | |
360 | } | |
361 | } | |
362 | } | |
363 | ||
fbe78f4f AL |
364 | static ssize_t vc_sendv_compat(VLANClientState *vc, const struct iovec *iov, |
365 | int iovcnt) | |
366 | { | |
367 | uint8_t buffer[4096]; | |
368 | size_t offset = 0; | |
369 | int i; | |
370 | ||
371 | for (i = 0; i < iovcnt; i++) { | |
372 | size_t len; | |
373 | ||
374 | len = MIN(sizeof(buffer) - offset, iov[i].iov_len); | |
375 | memcpy(buffer + offset, iov[i].iov_base, len); | |
376 | offset += len; | |
377 | } | |
378 | ||
379 | vc->fd_read(vc->opaque, buffer, offset); | |
380 | ||
381 | return offset; | |
382 | } | |
383 | ||
384 | ssize_t qemu_sendv_packet(VLANClientState *vc1, const struct iovec *iov, | |
385 | int iovcnt) | |
386 | { | |
387 | VLANState *vlan = vc1->vlan; | |
388 | VLANClientState *vc; | |
389 | ssize_t max_len = 0; | |
390 | ||
391 | for (vc = vlan->first_client; vc != NULL; vc = vc->next) { | |
392 | ssize_t len = 0; | |
393 | ||
394 | if (vc == vc1) | |
395 | continue; | |
396 | ||
397 | if (vc->fd_readv) | |
398 | len = vc->fd_readv(vc->opaque, iov, iovcnt); | |
399 | else if (vc->fd_read) | |
400 | len = vc_sendv_compat(vc, iov, iovcnt); | |
401 | ||
402 | max_len = MAX(max_len, len); | |
403 | } | |
404 | ||
405 | return max_len; | |
406 | } | |
407 | ||
63a01ef8 AL |
408 | #if defined(CONFIG_SLIRP) |
409 | ||
410 | /* slirp network adapter */ | |
411 | ||
412 | static int slirp_inited; | |
413 | static VLANClientState *slirp_vc; | |
414 | ||
415 | int slirp_can_output(void) | |
416 | { | |
417 | return !slirp_vc || qemu_can_send_packet(slirp_vc); | |
418 | } | |
419 | ||
420 | void slirp_output(const uint8_t *pkt, int pkt_len) | |
421 | { | |
422 | #ifdef DEBUG_SLIRP | |
423 | printf("slirp output:\n"); | |
424 | hex_dump(stdout, pkt, pkt_len); | |
425 | #endif | |
426 | if (!slirp_vc) | |
427 | return; | |
428 | qemu_send_packet(slirp_vc, pkt, pkt_len); | |
429 | } | |
430 | ||
431 | int slirp_is_inited(void) | |
432 | { | |
433 | return slirp_inited; | |
434 | } | |
435 | ||
436 | static void slirp_receive(void *opaque, const uint8_t *buf, int size) | |
437 | { | |
438 | #ifdef DEBUG_SLIRP | |
439 | printf("slirp input:\n"); | |
440 | hex_dump(stdout, buf, size); | |
441 | #endif | |
442 | slirp_input(buf, size); | |
443 | } | |
444 | ||
445 | static int net_slirp_init(VLANState *vlan) | |
446 | { | |
447 | if (!slirp_inited) { | |
448 | slirp_inited = 1; | |
449 | slirp_init(); | |
450 | } | |
451 | slirp_vc = qemu_new_vlan_client(vlan, | |
452 | slirp_receive, NULL, NULL); | |
453 | snprintf(slirp_vc->info_str, sizeof(slirp_vc->info_str), "user redirector"); | |
454 | return 0; | |
455 | } | |
456 | ||
457 | void net_slirp_redir(const char *redir_str) | |
458 | { | |
459 | int is_udp; | |
460 | char buf[256], *r; | |
461 | const char *p; | |
462 | struct in_addr guest_addr; | |
463 | int host_port, guest_port; | |
464 | ||
465 | if (!slirp_inited) { | |
466 | slirp_inited = 1; | |
467 | slirp_init(); | |
468 | } | |
469 | ||
470 | p = redir_str; | |
471 | if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) | |
472 | goto fail; | |
473 | if (!strcmp(buf, "tcp")) { | |
474 | is_udp = 0; | |
475 | } else if (!strcmp(buf, "udp")) { | |
476 | is_udp = 1; | |
477 | } else { | |
478 | goto fail; | |
479 | } | |
480 | ||
481 | if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) | |
482 | goto fail; | |
483 | host_port = strtol(buf, &r, 0); | |
484 | if (r == buf) | |
485 | goto fail; | |
486 | ||
487 | if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) | |
488 | goto fail; | |
489 | if (buf[0] == '\0') { | |
490 | pstrcpy(buf, sizeof(buf), "10.0.2.15"); | |
491 | } | |
492 | if (!inet_aton(buf, &guest_addr)) | |
493 | goto fail; | |
494 | ||
495 | guest_port = strtol(p, &r, 0); | |
496 | if (r == p) | |
497 | goto fail; | |
498 | ||
499 | if (slirp_redir(is_udp, host_port, guest_addr, guest_port) < 0) { | |
500 | fprintf(stderr, "qemu: could not set up redirection\n"); | |
501 | exit(1); | |
502 | } | |
503 | return; | |
504 | fail: | |
505 | fprintf(stderr, "qemu: syntax: -redir [tcp|udp]:host-port:[guest-host]:guest-port\n"); | |
506 | exit(1); | |
507 | } | |
508 | ||
509 | #ifndef _WIN32 | |
510 | ||
511 | static char smb_dir[1024]; | |
512 | ||
513 | static void erase_dir(char *dir_name) | |
514 | { | |
515 | DIR *d; | |
516 | struct dirent *de; | |
517 | char filename[1024]; | |
518 | ||
519 | /* erase all the files in the directory */ | |
520 | if ((d = opendir(dir_name)) != 0) { | |
521 | for(;;) { | |
522 | de = readdir(d); | |
523 | if (!de) | |
524 | break; | |
525 | if (strcmp(de->d_name, ".") != 0 && | |
526 | strcmp(de->d_name, "..") != 0) { | |
527 | snprintf(filename, sizeof(filename), "%s/%s", | |
528 | smb_dir, de->d_name); | |
529 | if (unlink(filename) != 0) /* is it a directory? */ | |
530 | erase_dir(filename); | |
531 | } | |
532 | } | |
533 | closedir(d); | |
534 | rmdir(dir_name); | |
535 | } | |
536 | } | |
537 | ||
538 | /* automatic user mode samba server configuration */ | |
539 | static void smb_exit(void) | |
540 | { | |
541 | erase_dir(smb_dir); | |
542 | } | |
543 | ||
544 | /* automatic user mode samba server configuration */ | |
545 | void net_slirp_smb(const char *exported_dir) | |
546 | { | |
547 | char smb_conf[1024]; | |
548 | char smb_cmdline[1024]; | |
549 | FILE *f; | |
550 | ||
551 | if (!slirp_inited) { | |
552 | slirp_inited = 1; | |
553 | slirp_init(); | |
554 | } | |
555 | ||
556 | /* XXX: better tmp dir construction */ | |
557 | snprintf(smb_dir, sizeof(smb_dir), "/tmp/qemu-smb.%d", getpid()); | |
558 | if (mkdir(smb_dir, 0700) < 0) { | |
559 | fprintf(stderr, "qemu: could not create samba server dir '%s'\n", smb_dir); | |
560 | exit(1); | |
561 | } | |
562 | snprintf(smb_conf, sizeof(smb_conf), "%s/%s", smb_dir, "smb.conf"); | |
563 | ||
564 | f = fopen(smb_conf, "w"); | |
565 | if (!f) { | |
566 | fprintf(stderr, "qemu: could not create samba server configuration file '%s'\n", smb_conf); | |
567 | exit(1); | |
568 | } | |
569 | fprintf(f, | |
570 | "[global]\n" | |
571 | "private dir=%s\n" | |
572 | "smb ports=0\n" | |
573 | "socket address=127.0.0.1\n" | |
574 | "pid directory=%s\n" | |
575 | "lock directory=%s\n" | |
576 | "log file=%s/log.smbd\n" | |
577 | "smb passwd file=%s/smbpasswd\n" | |
578 | "security = share\n" | |
579 | "[qemu]\n" | |
580 | "path=%s\n" | |
581 | "read only=no\n" | |
582 | "guest ok=yes\n", | |
583 | smb_dir, | |
584 | smb_dir, | |
585 | smb_dir, | |
586 | smb_dir, | |
587 | smb_dir, | |
588 | exported_dir | |
589 | ); | |
590 | fclose(f); | |
591 | atexit(smb_exit); | |
592 | ||
593 | snprintf(smb_cmdline, sizeof(smb_cmdline), "%s -s %s", | |
594 | SMBD_COMMAND, smb_conf); | |
595 | ||
596 | slirp_add_exec(0, smb_cmdline, 4, 139); | |
597 | } | |
598 | ||
599 | #endif /* !defined(_WIN32) */ | |
600 | void do_info_slirp(void) | |
601 | { | |
602 | slirp_stats(); | |
603 | } | |
604 | ||
605 | #endif /* CONFIG_SLIRP */ | |
606 | ||
607 | #if !defined(_WIN32) | |
608 | ||
609 | typedef struct TAPState { | |
610 | VLANClientState *vc; | |
611 | int fd; | |
612 | char down_script[1024]; | |
613 | } TAPState; | |
614 | ||
b535b7b2 AL |
615 | #ifdef HAVE_IOVEC |
616 | static ssize_t tap_receive_iov(void *opaque, const struct iovec *iov, | |
617 | int iovcnt) | |
618 | { | |
619 | TAPState *s = opaque; | |
620 | ssize_t len; | |
621 | ||
622 | do { | |
623 | len = writev(s->fd, iov, iovcnt); | |
624 | } while (len == -1 && (errno == EINTR || errno == EAGAIN)); | |
625 | ||
626 | return len; | |
627 | } | |
628 | #endif | |
629 | ||
63a01ef8 AL |
630 | static void tap_receive(void *opaque, const uint8_t *buf, int size) |
631 | { | |
632 | TAPState *s = opaque; | |
633 | int ret; | |
634 | for(;;) { | |
635 | ret = write(s->fd, buf, size); | |
636 | if (ret < 0 && (errno == EINTR || errno == EAGAIN)) { | |
637 | } else { | |
638 | break; | |
639 | } | |
640 | } | |
641 | } | |
642 | ||
643 | static void tap_send(void *opaque) | |
644 | { | |
645 | TAPState *s = opaque; | |
646 | uint8_t buf[4096]; | |
647 | int size; | |
648 | ||
649 | #ifdef __sun__ | |
650 | struct strbuf sbuf; | |
651 | int f = 0; | |
652 | sbuf.maxlen = sizeof(buf); | |
653 | sbuf.buf = buf; | |
654 | size = getmsg(s->fd, NULL, &sbuf, &f) >=0 ? sbuf.len : -1; | |
655 | #else | |
656 | size = read(s->fd, buf, sizeof(buf)); | |
657 | #endif | |
658 | if (size > 0) { | |
659 | qemu_send_packet(s->vc, buf, size); | |
660 | } | |
661 | } | |
662 | ||
663 | /* fd support */ | |
664 | ||
665 | static TAPState *net_tap_fd_init(VLANState *vlan, int fd) | |
666 | { | |
667 | TAPState *s; | |
668 | ||
669 | s = qemu_mallocz(sizeof(TAPState)); | |
670 | if (!s) | |
671 | return NULL; | |
672 | s->fd = fd; | |
673 | s->vc = qemu_new_vlan_client(vlan, tap_receive, NULL, s); | |
b535b7b2 AL |
674 | #ifdef HAVE_IOVEC |
675 | s->vc->fd_readv = tap_receive_iov; | |
676 | #endif | |
63a01ef8 AL |
677 | qemu_set_fd_handler(s->fd, tap_send, NULL, s); |
678 | snprintf(s->vc->info_str, sizeof(s->vc->info_str), "tap: fd=%d", fd); | |
679 | return s; | |
680 | } | |
681 | ||
682 | #if defined (_BSD) || defined (__FreeBSD_kernel__) | |
683 | static int tap_open(char *ifname, int ifname_size) | |
684 | { | |
685 | int fd; | |
686 | char *dev; | |
687 | struct stat s; | |
688 | ||
689 | TFR(fd = open("/dev/tap", O_RDWR)); | |
690 | if (fd < 0) { | |
691 | fprintf(stderr, "warning: could not open /dev/tap: no virtual network emulation\n"); | |
692 | return -1; | |
693 | } | |
694 | ||
695 | fstat(fd, &s); | |
696 | dev = devname(s.st_rdev, S_IFCHR); | |
697 | pstrcpy(ifname, ifname_size, dev); | |
698 | ||
699 | fcntl(fd, F_SETFL, O_NONBLOCK); | |
700 | return fd; | |
701 | } | |
702 | #elif defined(__sun__) | |
703 | #define TUNNEWPPA (('T'<<16) | 0x0001) | |
704 | /* | |
705 | * Allocate TAP device, returns opened fd. | |
706 | * Stores dev name in the first arg(must be large enough). | |
707 | */ | |
708 | int tap_alloc(char *dev, size_t dev_size) | |
709 | { | |
710 | int tap_fd, if_fd, ppa = -1; | |
711 | static int ip_fd = 0; | |
712 | char *ptr; | |
713 | ||
714 | static int arp_fd = 0; | |
715 | int ip_muxid, arp_muxid; | |
716 | struct strioctl strioc_if, strioc_ppa; | |
717 | int link_type = I_PLINK;; | |
718 | struct lifreq ifr; | |
719 | char actual_name[32] = ""; | |
720 | ||
721 | memset(&ifr, 0x0, sizeof(ifr)); | |
722 | ||
723 | if( *dev ){ | |
724 | ptr = dev; | |
47398b9c | 725 | while( *ptr && !qemu_isdigit((int)*ptr) ) ptr++; |
63a01ef8 AL |
726 | ppa = atoi(ptr); |
727 | } | |
728 | ||
729 | /* Check if IP device was opened */ | |
730 | if( ip_fd ) | |
731 | close(ip_fd); | |
732 | ||
733 | TFR(ip_fd = open("/dev/udp", O_RDWR, 0)); | |
734 | if (ip_fd < 0) { | |
735 | syslog(LOG_ERR, "Can't open /dev/ip (actually /dev/udp)"); | |
736 | return -1; | |
737 | } | |
738 | ||
739 | TFR(tap_fd = open("/dev/tap", O_RDWR, 0)); | |
740 | if (tap_fd < 0) { | |
741 | syslog(LOG_ERR, "Can't open /dev/tap"); | |
742 | return -1; | |
743 | } | |
744 | ||
745 | /* Assign a new PPA and get its unit number. */ | |
746 | strioc_ppa.ic_cmd = TUNNEWPPA; | |
747 | strioc_ppa.ic_timout = 0; | |
748 | strioc_ppa.ic_len = sizeof(ppa); | |
749 | strioc_ppa.ic_dp = (char *)&ppa; | |
750 | if ((ppa = ioctl (tap_fd, I_STR, &strioc_ppa)) < 0) | |
751 | syslog (LOG_ERR, "Can't assign new interface"); | |
752 | ||
753 | TFR(if_fd = open("/dev/tap", O_RDWR, 0)); | |
754 | if (if_fd < 0) { | |
755 | syslog(LOG_ERR, "Can't open /dev/tap (2)"); | |
756 | return -1; | |
757 | } | |
758 | if(ioctl(if_fd, I_PUSH, "ip") < 0){ | |
759 | syslog(LOG_ERR, "Can't push IP module"); | |
760 | return -1; | |
761 | } | |
762 | ||
763 | if (ioctl(if_fd, SIOCGLIFFLAGS, &ifr) < 0) | |
764 | syslog(LOG_ERR, "Can't get flags\n"); | |
765 | ||
766 | snprintf (actual_name, 32, "tap%d", ppa); | |
767 | pstrcpy(ifr.lifr_name, sizeof(ifr.lifr_name), actual_name); | |
768 | ||
769 | ifr.lifr_ppa = ppa; | |
770 | /* Assign ppa according to the unit number returned by tun device */ | |
771 | ||
772 | if (ioctl (if_fd, SIOCSLIFNAME, &ifr) < 0) | |
773 | syslog (LOG_ERR, "Can't set PPA %d", ppa); | |
774 | if (ioctl(if_fd, SIOCGLIFFLAGS, &ifr) <0) | |
775 | syslog (LOG_ERR, "Can't get flags\n"); | |
776 | /* Push arp module to if_fd */ | |
777 | if (ioctl (if_fd, I_PUSH, "arp") < 0) | |
778 | syslog (LOG_ERR, "Can't push ARP module (2)"); | |
779 | ||
780 | /* Push arp module to ip_fd */ | |
781 | if (ioctl (ip_fd, I_POP, NULL) < 0) | |
782 | syslog (LOG_ERR, "I_POP failed\n"); | |
783 | if (ioctl (ip_fd, I_PUSH, "arp") < 0) | |
784 | syslog (LOG_ERR, "Can't push ARP module (3)\n"); | |
785 | /* Open arp_fd */ | |
786 | TFR(arp_fd = open ("/dev/tap", O_RDWR, 0)); | |
787 | if (arp_fd < 0) | |
788 | syslog (LOG_ERR, "Can't open %s\n", "/dev/tap"); | |
789 | ||
790 | /* Set ifname to arp */ | |
791 | strioc_if.ic_cmd = SIOCSLIFNAME; | |
792 | strioc_if.ic_timout = 0; | |
793 | strioc_if.ic_len = sizeof(ifr); | |
794 | strioc_if.ic_dp = (char *)𝔦 | |
795 | if (ioctl(arp_fd, I_STR, &strioc_if) < 0){ | |
796 | syslog (LOG_ERR, "Can't set ifname to arp\n"); | |
797 | } | |
798 | ||
799 | if((ip_muxid = ioctl(ip_fd, I_LINK, if_fd)) < 0){ | |
800 | syslog(LOG_ERR, "Can't link TAP device to IP"); | |
801 | return -1; | |
802 | } | |
803 | ||
804 | if ((arp_muxid = ioctl (ip_fd, link_type, arp_fd)) < 0) | |
805 | syslog (LOG_ERR, "Can't link TAP device to ARP"); | |
806 | ||
807 | close (if_fd); | |
808 | ||
809 | memset(&ifr, 0x0, sizeof(ifr)); | |
810 | pstrcpy(ifr.lifr_name, sizeof(ifr.lifr_name), actual_name); | |
811 | ifr.lifr_ip_muxid = ip_muxid; | |
812 | ifr.lifr_arp_muxid = arp_muxid; | |
813 | ||
814 | if (ioctl (ip_fd, SIOCSLIFMUXID, &ifr) < 0) | |
815 | { | |
816 | ioctl (ip_fd, I_PUNLINK , arp_muxid); | |
817 | ioctl (ip_fd, I_PUNLINK, ip_muxid); | |
818 | syslog (LOG_ERR, "Can't set multiplexor id"); | |
819 | } | |
820 | ||
821 | snprintf(dev, dev_size, "tap%d", ppa); | |
822 | return tap_fd; | |
823 | } | |
824 | ||
825 | static int tap_open(char *ifname, int ifname_size) | |
826 | { | |
827 | char dev[10]=""; | |
828 | int fd; | |
829 | if( (fd = tap_alloc(dev, sizeof(dev))) < 0 ){ | |
830 | fprintf(stderr, "Cannot allocate TAP device\n"); | |
831 | return -1; | |
832 | } | |
833 | pstrcpy(ifname, ifname_size, dev); | |
834 | fcntl(fd, F_SETFL, O_NONBLOCK); | |
835 | return fd; | |
836 | } | |
b29fe3ed | 837 | #elif defined (_AIX) |
838 | static int tap_open(char *ifname, int ifname_size) | |
839 | { | |
840 | fprintf (stderr, "no tap on AIX\n"); | |
841 | return -1; | |
842 | } | |
63a01ef8 AL |
843 | #else |
844 | static int tap_open(char *ifname, int ifname_size) | |
845 | { | |
846 | struct ifreq ifr; | |
847 | int fd, ret; | |
848 | ||
849 | TFR(fd = open("/dev/net/tun", O_RDWR)); | |
850 | if (fd < 0) { | |
851 | fprintf(stderr, "warning: could not open /dev/net/tun: no virtual network emulation\n"); | |
852 | return -1; | |
853 | } | |
854 | memset(&ifr, 0, sizeof(ifr)); | |
855 | ifr.ifr_flags = IFF_TAP | IFF_NO_PI; | |
856 | if (ifname[0] != '\0') | |
857 | pstrcpy(ifr.ifr_name, IFNAMSIZ, ifname); | |
858 | else | |
859 | pstrcpy(ifr.ifr_name, IFNAMSIZ, "tap%d"); | |
860 | ret = ioctl(fd, TUNSETIFF, (void *) &ifr); | |
861 | if (ret != 0) { | |
862 | fprintf(stderr, "warning: could not configure /dev/net/tun: no virtual network emulation\n"); | |
863 | close(fd); | |
864 | return -1; | |
865 | } | |
866 | pstrcpy(ifname, ifname_size, ifr.ifr_name); | |
867 | fcntl(fd, F_SETFL, O_NONBLOCK); | |
868 | return fd; | |
869 | } | |
870 | #endif | |
871 | ||
872 | static int launch_script(const char *setup_script, const char *ifname, int fd) | |
873 | { | |
874 | int pid, status; | |
875 | char *args[3]; | |
876 | char **parg; | |
877 | ||
878 | /* try to launch network script */ | |
879 | pid = fork(); | |
880 | if (pid >= 0) { | |
881 | if (pid == 0) { | |
882 | int open_max = sysconf (_SC_OPEN_MAX), i; | |
883 | for (i = 0; i < open_max; i++) | |
884 | if (i != STDIN_FILENO && | |
885 | i != STDOUT_FILENO && | |
886 | i != STDERR_FILENO && | |
887 | i != fd) | |
888 | close(i); | |
889 | ||
890 | parg = args; | |
891 | *parg++ = (char *)setup_script; | |
892 | *parg++ = (char *)ifname; | |
893 | *parg++ = NULL; | |
894 | execv(setup_script, args); | |
895 | _exit(1); | |
896 | } | |
897 | while (waitpid(pid, &status, 0) != pid); | |
898 | if (!WIFEXITED(status) || | |
899 | WEXITSTATUS(status) != 0) { | |
900 | fprintf(stderr, "%s: could not launch network script\n", | |
901 | setup_script); | |
902 | return -1; | |
903 | } | |
904 | } | |
905 | return 0; | |
906 | } | |
907 | ||
908 | static int net_tap_init(VLANState *vlan, const char *ifname1, | |
909 | const char *setup_script, const char *down_script) | |
910 | { | |
911 | TAPState *s; | |
912 | int fd; | |
913 | char ifname[128]; | |
914 | ||
915 | if (ifname1 != NULL) | |
916 | pstrcpy(ifname, sizeof(ifname), ifname1); | |
917 | else | |
918 | ifname[0] = '\0'; | |
919 | TFR(fd = tap_open(ifname, sizeof(ifname))); | |
920 | if (fd < 0) | |
921 | return -1; | |
922 | ||
923 | if (!setup_script || !strcmp(setup_script, "no")) | |
924 | setup_script = ""; | |
925 | if (setup_script[0] != '\0') { | |
926 | if (launch_script(setup_script, ifname, fd)) | |
927 | return -1; | |
928 | } | |
929 | s = net_tap_fd_init(vlan, fd); | |
930 | if (!s) | |
931 | return -1; | |
932 | snprintf(s->vc->info_str, sizeof(s->vc->info_str), | |
933 | "tap: ifname=%s setup_script=%s", ifname, setup_script); | |
934 | if (down_script && strcmp(down_script, "no")) | |
935 | snprintf(s->down_script, sizeof(s->down_script), "%s", down_script); | |
936 | return 0; | |
937 | } | |
938 | ||
939 | #endif /* !_WIN32 */ | |
940 | ||
941 | #if defined(CONFIG_VDE) | |
942 | typedef struct VDEState { | |
943 | VLANClientState *vc; | |
944 | VDECONN *vde; | |
945 | } VDEState; | |
946 | ||
947 | static void vde_to_qemu(void *opaque) | |
948 | { | |
949 | VDEState *s = opaque; | |
950 | uint8_t buf[4096]; | |
951 | int size; | |
952 | ||
953 | size = vde_recv(s->vde, buf, sizeof(buf), 0); | |
954 | if (size > 0) { | |
955 | qemu_send_packet(s->vc, buf, size); | |
956 | } | |
957 | } | |
958 | ||
959 | static void vde_from_qemu(void *opaque, const uint8_t *buf, int size) | |
960 | { | |
961 | VDEState *s = opaque; | |
962 | int ret; | |
963 | for(;;) { | |
964 | ret = vde_send(s->vde, buf, size, 0); | |
965 | if (ret < 0 && errno == EINTR) { | |
966 | } else { | |
967 | break; | |
968 | } | |
969 | } | |
970 | } | |
971 | ||
972 | static int net_vde_init(VLANState *vlan, const char *sock, int port, | |
973 | const char *group, int mode) | |
974 | { | |
975 | VDEState *s; | |
976 | char *init_group = strlen(group) ? (char *)group : NULL; | |
977 | char *init_sock = strlen(sock) ? (char *)sock : NULL; | |
978 | ||
979 | struct vde_open_args args = { | |
980 | .port = port, | |
981 | .group = init_group, | |
982 | .mode = mode, | |
983 | }; | |
984 | ||
985 | s = qemu_mallocz(sizeof(VDEState)); | |
986 | if (!s) | |
987 | return -1; | |
988 | s->vde = vde_open(init_sock, "QEMU", &args); | |
989 | if (!s->vde){ | |
990 | free(s); | |
991 | return -1; | |
992 | } | |
993 | s->vc = qemu_new_vlan_client(vlan, vde_from_qemu, NULL, s); | |
994 | qemu_set_fd_handler(vde_datafd(s->vde), vde_to_qemu, NULL, s); | |
995 | snprintf(s->vc->info_str, sizeof(s->vc->info_str), "vde: sock=%s fd=%d", | |
996 | sock, vde_datafd(s->vde)); | |
997 | return 0; | |
998 | } | |
999 | #endif | |
1000 | ||
1001 | /* network connection */ | |
1002 | typedef struct NetSocketState { | |
1003 | VLANClientState *vc; | |
1004 | int fd; | |
1005 | int state; /* 0 = getting length, 1 = getting data */ | |
1006 | int index; | |
1007 | int packet_len; | |
1008 | uint8_t buf[4096]; | |
1009 | struct sockaddr_in dgram_dst; /* contains inet host and port destination iff connectionless (SOCK_DGRAM) */ | |
1010 | } NetSocketState; | |
1011 | ||
1012 | typedef struct NetSocketListenState { | |
1013 | VLANState *vlan; | |
1014 | int fd; | |
1015 | } NetSocketListenState; | |
1016 | ||
1017 | /* XXX: we consider we can send the whole packet without blocking */ | |
1018 | static void net_socket_receive(void *opaque, const uint8_t *buf, int size) | |
1019 | { | |
1020 | NetSocketState *s = opaque; | |
1021 | uint32_t len; | |
1022 | len = htonl(size); | |
1023 | ||
1024 | send_all(s->fd, (const uint8_t *)&len, sizeof(len)); | |
1025 | send_all(s->fd, buf, size); | |
1026 | } | |
1027 | ||
1028 | static void net_socket_receive_dgram(void *opaque, const uint8_t *buf, int size) | |
1029 | { | |
1030 | NetSocketState *s = opaque; | |
1031 | sendto(s->fd, buf, size, 0, | |
1032 | (struct sockaddr *)&s->dgram_dst, sizeof(s->dgram_dst)); | |
1033 | } | |
1034 | ||
1035 | static void net_socket_send(void *opaque) | |
1036 | { | |
1037 | NetSocketState *s = opaque; | |
1038 | int l, size, err; | |
1039 | uint8_t buf1[4096]; | |
1040 | const uint8_t *buf; | |
1041 | ||
1042 | size = recv(s->fd, buf1, sizeof(buf1), 0); | |
1043 | if (size < 0) { | |
1044 | err = socket_error(); | |
1045 | if (err != EWOULDBLOCK) | |
1046 | goto eoc; | |
1047 | } else if (size == 0) { | |
1048 | /* end of connection */ | |
1049 | eoc: | |
1050 | qemu_set_fd_handler(s->fd, NULL, NULL, NULL); | |
1051 | closesocket(s->fd); | |
1052 | return; | |
1053 | } | |
1054 | buf = buf1; | |
1055 | while (size > 0) { | |
1056 | /* reassemble a packet from the network */ | |
1057 | switch(s->state) { | |
1058 | case 0: | |
1059 | l = 4 - s->index; | |
1060 | if (l > size) | |
1061 | l = size; | |
1062 | memcpy(s->buf + s->index, buf, l); | |
1063 | buf += l; | |
1064 | size -= l; | |
1065 | s->index += l; | |
1066 | if (s->index == 4) { | |
1067 | /* got length */ | |
1068 | s->packet_len = ntohl(*(uint32_t *)s->buf); | |
1069 | s->index = 0; | |
1070 | s->state = 1; | |
1071 | } | |
1072 | break; | |
1073 | case 1: | |
1074 | l = s->packet_len - s->index; | |
1075 | if (l > size) | |
1076 | l = size; | |
1077 | memcpy(s->buf + s->index, buf, l); | |
1078 | s->index += l; | |
1079 | buf += l; | |
1080 | size -= l; | |
1081 | if (s->index >= s->packet_len) { | |
1082 | qemu_send_packet(s->vc, s->buf, s->packet_len); | |
1083 | s->index = 0; | |
1084 | s->state = 0; | |
1085 | } | |
1086 | break; | |
1087 | } | |
1088 | } | |
1089 | } | |
1090 | ||
1091 | static void net_socket_send_dgram(void *opaque) | |
1092 | { | |
1093 | NetSocketState *s = opaque; | |
1094 | int size; | |
1095 | ||
1096 | size = recv(s->fd, s->buf, sizeof(s->buf), 0); | |
1097 | if (size < 0) | |
1098 | return; | |
1099 | if (size == 0) { | |
1100 | /* end of connection */ | |
1101 | qemu_set_fd_handler(s->fd, NULL, NULL, NULL); | |
1102 | return; | |
1103 | } | |
1104 | qemu_send_packet(s->vc, s->buf, size); | |
1105 | } | |
1106 | ||
1107 | static int net_socket_mcast_create(struct sockaddr_in *mcastaddr) | |
1108 | { | |
1109 | struct ip_mreq imr; | |
1110 | int fd; | |
1111 | int val, ret; | |
1112 | if (!IN_MULTICAST(ntohl(mcastaddr->sin_addr.s_addr))) { | |
1113 | fprintf(stderr, "qemu: error: specified mcastaddr \"%s\" (0x%08x) does not contain a multicast address\n", | |
1114 | inet_ntoa(mcastaddr->sin_addr), | |
1115 | (int)ntohl(mcastaddr->sin_addr.s_addr)); | |
1116 | return -1; | |
1117 | ||
1118 | } | |
1119 | fd = socket(PF_INET, SOCK_DGRAM, 0); | |
1120 | if (fd < 0) { | |
1121 | perror("socket(PF_INET, SOCK_DGRAM)"); | |
1122 | return -1; | |
1123 | } | |
1124 | ||
1125 | val = 1; | |
1126 | ret=setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, | |
1127 | (const char *)&val, sizeof(val)); | |
1128 | if (ret < 0) { | |
1129 | perror("setsockopt(SOL_SOCKET, SO_REUSEADDR)"); | |
1130 | goto fail; | |
1131 | } | |
1132 | ||
1133 | ret = bind(fd, (struct sockaddr *)mcastaddr, sizeof(*mcastaddr)); | |
1134 | if (ret < 0) { | |
1135 | perror("bind"); | |
1136 | goto fail; | |
1137 | } | |
1138 | ||
1139 | /* Add host to multicast group */ | |
1140 | imr.imr_multiaddr = mcastaddr->sin_addr; | |
1141 | imr.imr_interface.s_addr = htonl(INADDR_ANY); | |
1142 | ||
1143 | ret = setsockopt(fd, IPPROTO_IP, IP_ADD_MEMBERSHIP, | |
1144 | (const char *)&imr, sizeof(struct ip_mreq)); | |
1145 | if (ret < 0) { | |
1146 | perror("setsockopt(IP_ADD_MEMBERSHIP)"); | |
1147 | goto fail; | |
1148 | } | |
1149 | ||
1150 | /* Force mcast msgs to loopback (eg. several QEMUs in same host */ | |
1151 | val = 1; | |
1152 | ret=setsockopt(fd, IPPROTO_IP, IP_MULTICAST_LOOP, | |
1153 | (const char *)&val, sizeof(val)); | |
1154 | if (ret < 0) { | |
1155 | perror("setsockopt(SOL_IP, IP_MULTICAST_LOOP)"); | |
1156 | goto fail; | |
1157 | } | |
1158 | ||
1159 | socket_set_nonblock(fd); | |
1160 | return fd; | |
1161 | fail: | |
1162 | if (fd >= 0) | |
1163 | closesocket(fd); | |
1164 | return -1; | |
1165 | } | |
1166 | ||
1167 | static NetSocketState *net_socket_fd_init_dgram(VLANState *vlan, int fd, | |
1168 | int is_connected) | |
1169 | { | |
1170 | struct sockaddr_in saddr; | |
1171 | int newfd; | |
1172 | socklen_t saddr_len; | |
1173 | NetSocketState *s; | |
1174 | ||
1175 | /* fd passed: multicast: "learn" dgram_dst address from bound address and save it | |
1176 | * Because this may be "shared" socket from a "master" process, datagrams would be recv() | |
1177 | * by ONLY ONE process: we must "clone" this dgram socket --jjo | |
1178 | */ | |
1179 | ||
1180 | if (is_connected) { | |
1181 | if (getsockname(fd, (struct sockaddr *) &saddr, &saddr_len) == 0) { | |
1182 | /* must be bound */ | |
1183 | if (saddr.sin_addr.s_addr==0) { | |
1184 | fprintf(stderr, "qemu: error: init_dgram: fd=%d unbound, cannot setup multicast dst addr\n", | |
1185 | fd); | |
1186 | return NULL; | |
1187 | } | |
1188 | /* clone dgram socket */ | |
1189 | newfd = net_socket_mcast_create(&saddr); | |
1190 | if (newfd < 0) { | |
1191 | /* error already reported by net_socket_mcast_create() */ | |
1192 | close(fd); | |
1193 | return NULL; | |
1194 | } | |
1195 | /* clone newfd to fd, close newfd */ | |
1196 | dup2(newfd, fd); | |
1197 | close(newfd); | |
1198 | ||
1199 | } else { | |
1200 | fprintf(stderr, "qemu: error: init_dgram: fd=%d failed getsockname(): %s\n", | |
1201 | fd, strerror(errno)); | |
1202 | return NULL; | |
1203 | } | |
1204 | } | |
1205 | ||
1206 | s = qemu_mallocz(sizeof(NetSocketState)); | |
1207 | if (!s) | |
1208 | return NULL; | |
1209 | s->fd = fd; | |
1210 | ||
1211 | s->vc = qemu_new_vlan_client(vlan, net_socket_receive_dgram, NULL, s); | |
1212 | qemu_set_fd_handler(s->fd, net_socket_send_dgram, NULL, s); | |
1213 | ||
1214 | /* mcast: save bound address as dst */ | |
1215 | if (is_connected) s->dgram_dst=saddr; | |
1216 | ||
1217 | snprintf(s->vc->info_str, sizeof(s->vc->info_str), | |
1218 | "socket: fd=%d (%s mcast=%s:%d)", | |
1219 | fd, is_connected? "cloned" : "", | |
1220 | inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port)); | |
1221 | return s; | |
1222 | } | |
1223 | ||
1224 | static void net_socket_connect(void *opaque) | |
1225 | { | |
1226 | NetSocketState *s = opaque; | |
1227 | qemu_set_fd_handler(s->fd, net_socket_send, NULL, s); | |
1228 | } | |
1229 | ||
1230 | static NetSocketState *net_socket_fd_init_stream(VLANState *vlan, int fd, | |
1231 | int is_connected) | |
1232 | { | |
1233 | NetSocketState *s; | |
1234 | s = qemu_mallocz(sizeof(NetSocketState)); | |
1235 | if (!s) | |
1236 | return NULL; | |
1237 | s->fd = fd; | |
1238 | s->vc = qemu_new_vlan_client(vlan, | |
1239 | net_socket_receive, NULL, s); | |
1240 | snprintf(s->vc->info_str, sizeof(s->vc->info_str), | |
1241 | "socket: fd=%d", fd); | |
1242 | if (is_connected) { | |
1243 | net_socket_connect(s); | |
1244 | } else { | |
1245 | qemu_set_fd_handler(s->fd, NULL, net_socket_connect, s); | |
1246 | } | |
1247 | return s; | |
1248 | } | |
1249 | ||
1250 | static NetSocketState *net_socket_fd_init(VLANState *vlan, int fd, | |
1251 | int is_connected) | |
1252 | { | |
1253 | int so_type=-1, optlen=sizeof(so_type); | |
1254 | ||
1255 | if(getsockopt(fd, SOL_SOCKET, SO_TYPE, (char *)&so_type, | |
1256 | (socklen_t *)&optlen)< 0) { | |
1257 | fprintf(stderr, "qemu: error: getsockopt(SO_TYPE) for fd=%d failed\n", fd); | |
1258 | return NULL; | |
1259 | } | |
1260 | switch(so_type) { | |
1261 | case SOCK_DGRAM: | |
1262 | return net_socket_fd_init_dgram(vlan, fd, is_connected); | |
1263 | case SOCK_STREAM: | |
1264 | return net_socket_fd_init_stream(vlan, fd, is_connected); | |
1265 | default: | |
1266 | /* who knows ... this could be a eg. a pty, do warn and continue as stream */ | |
1267 | fprintf(stderr, "qemu: warning: socket type=%d for fd=%d is not SOCK_DGRAM or SOCK_STREAM\n", so_type, fd); | |
1268 | return net_socket_fd_init_stream(vlan, fd, is_connected); | |
1269 | } | |
1270 | return NULL; | |
1271 | } | |
1272 | ||
1273 | static void net_socket_accept(void *opaque) | |
1274 | { | |
1275 | NetSocketListenState *s = opaque; | |
1276 | NetSocketState *s1; | |
1277 | struct sockaddr_in saddr; | |
1278 | socklen_t len; | |
1279 | int fd; | |
1280 | ||
1281 | for(;;) { | |
1282 | len = sizeof(saddr); | |
1283 | fd = accept(s->fd, (struct sockaddr *)&saddr, &len); | |
1284 | if (fd < 0 && errno != EINTR) { | |
1285 | return; | |
1286 | } else if (fd >= 0) { | |
1287 | break; | |
1288 | } | |
1289 | } | |
1290 | s1 = net_socket_fd_init(s->vlan, fd, 1); | |
1291 | if (!s1) { | |
1292 | closesocket(fd); | |
1293 | } else { | |
1294 | snprintf(s1->vc->info_str, sizeof(s1->vc->info_str), | |
1295 | "socket: connection from %s:%d", | |
1296 | inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port)); | |
1297 | } | |
1298 | } | |
1299 | ||
1300 | static int net_socket_listen_init(VLANState *vlan, const char *host_str) | |
1301 | { | |
1302 | NetSocketListenState *s; | |
1303 | int fd, val, ret; | |
1304 | struct sockaddr_in saddr; | |
1305 | ||
1306 | if (parse_host_port(&saddr, host_str) < 0) | |
1307 | return -1; | |
1308 | ||
1309 | s = qemu_mallocz(sizeof(NetSocketListenState)); | |
1310 | if (!s) | |
1311 | return -1; | |
1312 | ||
1313 | fd = socket(PF_INET, SOCK_STREAM, 0); | |
1314 | if (fd < 0) { | |
1315 | perror("socket"); | |
1316 | return -1; | |
1317 | } | |
1318 | socket_set_nonblock(fd); | |
1319 | ||
1320 | /* allow fast reuse */ | |
1321 | val = 1; | |
1322 | setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, (const char *)&val, sizeof(val)); | |
1323 | ||
1324 | ret = bind(fd, (struct sockaddr *)&saddr, sizeof(saddr)); | |
1325 | if (ret < 0) { | |
1326 | perror("bind"); | |
1327 | return -1; | |
1328 | } | |
1329 | ret = listen(fd, 0); | |
1330 | if (ret < 0) { | |
1331 | perror("listen"); | |
1332 | return -1; | |
1333 | } | |
1334 | s->vlan = vlan; | |
1335 | s->fd = fd; | |
1336 | qemu_set_fd_handler(fd, net_socket_accept, NULL, s); | |
1337 | return 0; | |
1338 | } | |
1339 | ||
1340 | static int net_socket_connect_init(VLANState *vlan, const char *host_str) | |
1341 | { | |
1342 | NetSocketState *s; | |
1343 | int fd, connected, ret, err; | |
1344 | struct sockaddr_in saddr; | |
1345 | ||
1346 | if (parse_host_port(&saddr, host_str) < 0) | |
1347 | return -1; | |
1348 | ||
1349 | fd = socket(PF_INET, SOCK_STREAM, 0); | |
1350 | if (fd < 0) { | |
1351 | perror("socket"); | |
1352 | return -1; | |
1353 | } | |
1354 | socket_set_nonblock(fd); | |
1355 | ||
1356 | connected = 0; | |
1357 | for(;;) { | |
1358 | ret = connect(fd, (struct sockaddr *)&saddr, sizeof(saddr)); | |
1359 | if (ret < 0) { | |
1360 | err = socket_error(); | |
1361 | if (err == EINTR || err == EWOULDBLOCK) { | |
1362 | } else if (err == EINPROGRESS) { | |
1363 | break; | |
1364 | #ifdef _WIN32 | |
1365 | } else if (err == WSAEALREADY) { | |
1366 | break; | |
1367 | #endif | |
1368 | } else { | |
1369 | perror("connect"); | |
1370 | closesocket(fd); | |
1371 | return -1; | |
1372 | } | |
1373 | } else { | |
1374 | connected = 1; | |
1375 | break; | |
1376 | } | |
1377 | } | |
1378 | s = net_socket_fd_init(vlan, fd, connected); | |
1379 | if (!s) | |
1380 | return -1; | |
1381 | snprintf(s->vc->info_str, sizeof(s->vc->info_str), | |
1382 | "socket: connect to %s:%d", | |
1383 | inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port)); | |
1384 | return 0; | |
1385 | } | |
1386 | ||
1387 | static int net_socket_mcast_init(VLANState *vlan, const char *host_str) | |
1388 | { | |
1389 | NetSocketState *s; | |
1390 | int fd; | |
1391 | struct sockaddr_in saddr; | |
1392 | ||
1393 | if (parse_host_port(&saddr, host_str) < 0) | |
1394 | return -1; | |
1395 | ||
1396 | ||
1397 | fd = net_socket_mcast_create(&saddr); | |
1398 | if (fd < 0) | |
1399 | return -1; | |
1400 | ||
1401 | s = net_socket_fd_init(vlan, fd, 0); | |
1402 | if (!s) | |
1403 | return -1; | |
1404 | ||
1405 | s->dgram_dst = saddr; | |
1406 | ||
1407 | snprintf(s->vc->info_str, sizeof(s->vc->info_str), | |
1408 | "socket: mcast=%s:%d", | |
1409 | inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port)); | |
1410 | return 0; | |
1411 | ||
1412 | } | |
1413 | ||
1414 | /* find or alloc a new VLAN */ | |
1415 | VLANState *qemu_find_vlan(int id) | |
1416 | { | |
1417 | VLANState **pvlan, *vlan; | |
1418 | for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) { | |
1419 | if (vlan->id == id) | |
1420 | return vlan; | |
1421 | } | |
1422 | vlan = qemu_mallocz(sizeof(VLANState)); | |
1423 | if (!vlan) | |
1424 | return NULL; | |
1425 | vlan->id = id; | |
1426 | vlan->next = NULL; | |
1427 | pvlan = &first_vlan; | |
1428 | while (*pvlan != NULL) | |
1429 | pvlan = &(*pvlan)->next; | |
1430 | *pvlan = vlan; | |
1431 | return vlan; | |
1432 | } | |
1433 | ||
1434 | int net_client_init(const char *device, const char *p) | |
1435 | { | |
1436 | char buf[1024]; | |
1437 | int vlan_id, ret; | |
1438 | VLANState *vlan; | |
1439 | ||
1440 | vlan_id = 0; | |
1441 | if (get_param_value(buf, sizeof(buf), "vlan", p)) { | |
1442 | vlan_id = strtol(buf, NULL, 0); | |
1443 | } | |
1444 | vlan = qemu_find_vlan(vlan_id); | |
1445 | if (!vlan) { | |
1446 | fprintf(stderr, "Could not create vlan %d\n", vlan_id); | |
1447 | return -1; | |
1448 | } | |
1449 | if (!strcmp(device, "nic")) { | |
1450 | NICInfo *nd; | |
1451 | uint8_t *macaddr; | |
1452 | ||
1453 | if (nb_nics >= MAX_NICS) { | |
1454 | fprintf(stderr, "Too Many NICs\n"); | |
1455 | return -1; | |
1456 | } | |
1457 | nd = &nd_table[nb_nics]; | |
1458 | macaddr = nd->macaddr; | |
1459 | macaddr[0] = 0x52; | |
1460 | macaddr[1] = 0x54; | |
1461 | macaddr[2] = 0x00; | |
1462 | macaddr[3] = 0x12; | |
1463 | macaddr[4] = 0x34; | |
1464 | macaddr[5] = 0x56 + nb_nics; | |
1465 | ||
1466 | if (get_param_value(buf, sizeof(buf), "macaddr", p)) { | |
1467 | if (parse_macaddr(macaddr, buf) < 0) { | |
1468 | fprintf(stderr, "invalid syntax for ethernet address\n"); | |
1469 | return -1; | |
1470 | } | |
1471 | } | |
1472 | if (get_param_value(buf, sizeof(buf), "model", p)) { | |
1473 | nd->model = strdup(buf); | |
1474 | } | |
1475 | nd->vlan = vlan; | |
1476 | nb_nics++; | |
1477 | vlan->nb_guest_devs++; | |
1478 | ret = 0; | |
1479 | } else | |
1480 | if (!strcmp(device, "none")) { | |
1481 | /* does nothing. It is needed to signal that no network cards | |
1482 | are wanted */ | |
1483 | ret = 0; | |
1484 | } else | |
1485 | #ifdef CONFIG_SLIRP | |
1486 | if (!strcmp(device, "user")) { | |
1487 | if (get_param_value(buf, sizeof(buf), "hostname", p)) { | |
1488 | pstrcpy(slirp_hostname, sizeof(slirp_hostname), buf); | |
1489 | } | |
1490 | vlan->nb_host_devs++; | |
1491 | ret = net_slirp_init(vlan); | |
1492 | } else | |
1493 | #endif | |
1494 | #ifdef _WIN32 | |
1495 | if (!strcmp(device, "tap")) { | |
1496 | char ifname[64]; | |
1497 | if (get_param_value(ifname, sizeof(ifname), "ifname", p) <= 0) { | |
1498 | fprintf(stderr, "tap: no interface name\n"); | |
1499 | return -1; | |
1500 | } | |
1501 | vlan->nb_host_devs++; | |
1502 | ret = tap_win32_init(vlan, ifname); | |
1503 | } else | |
b29fe3ed | 1504 | #elif defined (_AIX) |
63a01ef8 AL |
1505 | #else |
1506 | if (!strcmp(device, "tap")) { | |
1507 | char ifname[64]; | |
1508 | char setup_script[1024], down_script[1024]; | |
1509 | int fd; | |
1510 | vlan->nb_host_devs++; | |
1511 | if (get_param_value(buf, sizeof(buf), "fd", p) > 0) { | |
1512 | fd = strtol(buf, NULL, 0); | |
1513 | fcntl(fd, F_SETFL, O_NONBLOCK); | |
1514 | ret = -1; | |
1515 | if (net_tap_fd_init(vlan, fd)) | |
1516 | ret = 0; | |
1517 | } else { | |
1518 | if (get_param_value(ifname, sizeof(ifname), "ifname", p) <= 0) { | |
1519 | ifname[0] = '\0'; | |
1520 | } | |
1521 | if (get_param_value(setup_script, sizeof(setup_script), "script", p) == 0) { | |
1522 | pstrcpy(setup_script, sizeof(setup_script), DEFAULT_NETWORK_SCRIPT); | |
1523 | } | |
1524 | if (get_param_value(down_script, sizeof(down_script), "downscript", p) == 0) { | |
1525 | pstrcpy(down_script, sizeof(down_script), DEFAULT_NETWORK_DOWN_SCRIPT); | |
1526 | } | |
1527 | ret = net_tap_init(vlan, ifname, setup_script, down_script); | |
1528 | } | |
1529 | } else | |
1530 | #endif | |
1531 | if (!strcmp(device, "socket")) { | |
1532 | if (get_param_value(buf, sizeof(buf), "fd", p) > 0) { | |
1533 | int fd; | |
1534 | fd = strtol(buf, NULL, 0); | |
1535 | ret = -1; | |
1536 | if (net_socket_fd_init(vlan, fd, 1)) | |
1537 | ret = 0; | |
1538 | } else if (get_param_value(buf, sizeof(buf), "listen", p) > 0) { | |
1539 | ret = net_socket_listen_init(vlan, buf); | |
1540 | } else if (get_param_value(buf, sizeof(buf), "connect", p) > 0) { | |
1541 | ret = net_socket_connect_init(vlan, buf); | |
1542 | } else if (get_param_value(buf, sizeof(buf), "mcast", p) > 0) { | |
1543 | ret = net_socket_mcast_init(vlan, buf); | |
1544 | } else { | |
1545 | fprintf(stderr, "Unknown socket options: %s\n", p); | |
1546 | return -1; | |
1547 | } | |
1548 | vlan->nb_host_devs++; | |
1549 | } else | |
1550 | #ifdef CONFIG_VDE | |
1551 | if (!strcmp(device, "vde")) { | |
1552 | char vde_sock[1024], vde_group[512]; | |
1553 | int vde_port, vde_mode; | |
1554 | vlan->nb_host_devs++; | |
1555 | if (get_param_value(vde_sock, sizeof(vde_sock), "sock", p) <= 0) { | |
1556 | vde_sock[0] = '\0'; | |
1557 | } | |
1558 | if (get_param_value(buf, sizeof(buf), "port", p) > 0) { | |
1559 | vde_port = strtol(buf, NULL, 10); | |
1560 | } else { | |
1561 | vde_port = 0; | |
1562 | } | |
1563 | if (get_param_value(vde_group, sizeof(vde_group), "group", p) <= 0) { | |
1564 | vde_group[0] = '\0'; | |
1565 | } | |
1566 | if (get_param_value(buf, sizeof(buf), "mode", p) > 0) { | |
1567 | vde_mode = strtol(buf, NULL, 8); | |
1568 | } else { | |
1569 | vde_mode = 0700; | |
1570 | } | |
1571 | ret = net_vde_init(vlan, vde_sock, vde_port, vde_group, vde_mode); | |
1572 | } else | |
1573 | #endif | |
1574 | { | |
1575 | fprintf(stderr, "Unknown network device: %s\n", device); | |
1576 | return -1; | |
1577 | } | |
1578 | if (ret < 0) { | |
1579 | fprintf(stderr, "Could not initialize device '%s'\n", device); | |
1580 | } | |
1581 | ||
1582 | return ret; | |
1583 | } | |
1584 | ||
1585 | int net_client_parse(const char *str) | |
1586 | { | |
1587 | const char *p; | |
1588 | char *q; | |
1589 | char device[64]; | |
1590 | ||
1591 | p = str; | |
1592 | q = device; | |
1593 | while (*p != '\0' && *p != ',') { | |
1594 | if ((q - device) < sizeof(device) - 1) | |
1595 | *q++ = *p; | |
1596 | p++; | |
1597 | } | |
1598 | *q = '\0'; | |
1599 | if (*p == ',') | |
1600 | p++; | |
1601 | ||
1602 | return net_client_init(device, p); | |
1603 | } | |
1604 | ||
1605 | void do_info_network(void) | |
1606 | { | |
1607 | VLANState *vlan; | |
1608 | VLANClientState *vc; | |
1609 | ||
1610 | for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) { | |
1611 | term_printf("VLAN %d devices:\n", vlan->id); | |
1612 | for(vc = vlan->first_client; vc != NULL; vc = vc->next) | |
1613 | term_printf(" %s\n", vc->info_str); | |
1614 | } | |
1615 | } | |
1616 | ||
1617 | void net_cleanup(void) | |
1618 | { | |
1619 | VLANState *vlan; | |
1620 | ||
1621 | #if !defined(_WIN32) | |
1622 | /* close network clients */ | |
1623 | for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) { | |
1624 | VLANClientState *vc; | |
1625 | ||
1626 | for(vc = vlan->first_client; vc != NULL; vc = vc->next) { | |
1627 | if (vc->fd_read == tap_receive) { | |
1628 | char ifname[64]; | |
1629 | TAPState *s = vc->opaque; | |
1630 | ||
1631 | if (sscanf(vc->info_str, "tap: ifname=%63s ", ifname) == 1 && | |
1632 | s->down_script[0]) | |
1633 | launch_script(s->down_script, ifname, s->fd); | |
1634 | } | |
1635 | #if defined(CONFIG_VDE) | |
1636 | if (vc->fd_read == vde_from_qemu) { | |
1637 | VDEState *s = vc->opaque; | |
1638 | vde_close(s->vde); | |
1639 | } | |
1640 | #endif | |
1641 | } | |
1642 | } | |
1643 | #endif | |
1644 | } | |
1645 | ||
1646 | void net_client_check(void) | |
1647 | { | |
1648 | VLANState *vlan; | |
1649 | ||
1650 | for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) { | |
1651 | if (vlan->nb_guest_devs == 0 && vlan->nb_host_devs == 0) | |
1652 | continue; | |
1653 | if (vlan->nb_guest_devs == 0) | |
1654 | fprintf(stderr, "Warning: vlan %d with no nics\n", vlan->id); | |
1655 | if (vlan->nb_host_devs == 0) | |
1656 | fprintf(stderr, | |
1657 | "Warning: vlan %d is not connected to host network\n", | |
1658 | vlan->id); | |
1659 | } | |
1660 | } |