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Commit | Line | Data |
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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, | |
bf38c1a0 | 300 | const char *model, |
63a01ef8 AL |
301 | IOReadHandler *fd_read, |
302 | IOCanRWHandler *fd_can_read, | |
303 | void *opaque) | |
304 | { | |
305 | VLANClientState *vc, **pvc; | |
306 | vc = qemu_mallocz(sizeof(VLANClientState)); | |
307 | if (!vc) | |
308 | return NULL; | |
bf38c1a0 | 309 | vc->model = strdup(model); |
63a01ef8 AL |
310 | vc->fd_read = fd_read; |
311 | vc->fd_can_read = fd_can_read; | |
312 | vc->opaque = opaque; | |
313 | vc->vlan = vlan; | |
314 | ||
315 | vc->next = NULL; | |
316 | pvc = &vlan->first_client; | |
317 | while (*pvc != NULL) | |
318 | pvc = &(*pvc)->next; | |
319 | *pvc = vc; | |
320 | return vc; | |
321 | } | |
322 | ||
323 | void qemu_del_vlan_client(VLANClientState *vc) | |
324 | { | |
325 | VLANClientState **pvc = &vc->vlan->first_client; | |
326 | ||
327 | while (*pvc != NULL) | |
328 | if (*pvc == vc) { | |
329 | *pvc = vc->next; | |
bf38c1a0 | 330 | free(vc->model); |
63a01ef8 AL |
331 | free(vc); |
332 | break; | |
333 | } else | |
334 | pvc = &(*pvc)->next; | |
335 | } | |
336 | ||
337 | int qemu_can_send_packet(VLANClientState *vc1) | |
338 | { | |
339 | VLANState *vlan = vc1->vlan; | |
340 | VLANClientState *vc; | |
341 | ||
342 | for(vc = vlan->first_client; vc != NULL; vc = vc->next) { | |
343 | if (vc != vc1) { | |
344 | if (vc->fd_can_read && vc->fd_can_read(vc->opaque)) | |
345 | return 1; | |
346 | } | |
347 | } | |
348 | return 0; | |
349 | } | |
350 | ||
351 | void qemu_send_packet(VLANClientState *vc1, const uint8_t *buf, int size) | |
352 | { | |
353 | VLANState *vlan = vc1->vlan; | |
354 | VLANClientState *vc; | |
355 | ||
356 | #ifdef DEBUG_NET | |
357 | printf("vlan %d send:\n", vlan->id); | |
358 | hex_dump(stdout, buf, size); | |
359 | #endif | |
360 | for(vc = vlan->first_client; vc != NULL; vc = vc->next) { | |
361 | if (vc != vc1) { | |
362 | vc->fd_read(vc->opaque, buf, size); | |
363 | } | |
364 | } | |
365 | } | |
366 | ||
fbe78f4f AL |
367 | static ssize_t vc_sendv_compat(VLANClientState *vc, const struct iovec *iov, |
368 | int iovcnt) | |
369 | { | |
370 | uint8_t buffer[4096]; | |
371 | size_t offset = 0; | |
372 | int i; | |
373 | ||
374 | for (i = 0; i < iovcnt; i++) { | |
375 | size_t len; | |
376 | ||
377 | len = MIN(sizeof(buffer) - offset, iov[i].iov_len); | |
378 | memcpy(buffer + offset, iov[i].iov_base, len); | |
379 | offset += len; | |
380 | } | |
381 | ||
382 | vc->fd_read(vc->opaque, buffer, offset); | |
383 | ||
384 | return offset; | |
385 | } | |
386 | ||
387 | ssize_t qemu_sendv_packet(VLANClientState *vc1, const struct iovec *iov, | |
388 | int iovcnt) | |
389 | { | |
390 | VLANState *vlan = vc1->vlan; | |
391 | VLANClientState *vc; | |
392 | ssize_t max_len = 0; | |
393 | ||
394 | for (vc = vlan->first_client; vc != NULL; vc = vc->next) { | |
395 | ssize_t len = 0; | |
396 | ||
397 | if (vc == vc1) | |
398 | continue; | |
399 | ||
400 | if (vc->fd_readv) | |
401 | len = vc->fd_readv(vc->opaque, iov, iovcnt); | |
402 | else if (vc->fd_read) | |
403 | len = vc_sendv_compat(vc, iov, iovcnt); | |
404 | ||
405 | max_len = MAX(max_len, len); | |
406 | } | |
407 | ||
408 | return max_len; | |
409 | } | |
410 | ||
63a01ef8 AL |
411 | #if defined(CONFIG_SLIRP) |
412 | ||
413 | /* slirp network adapter */ | |
414 | ||
415 | static int slirp_inited; | |
416 | static VLANClientState *slirp_vc; | |
417 | ||
418 | int slirp_can_output(void) | |
419 | { | |
420 | return !slirp_vc || qemu_can_send_packet(slirp_vc); | |
421 | } | |
422 | ||
423 | void slirp_output(const uint8_t *pkt, int pkt_len) | |
424 | { | |
425 | #ifdef DEBUG_SLIRP | |
426 | printf("slirp output:\n"); | |
427 | hex_dump(stdout, pkt, pkt_len); | |
428 | #endif | |
429 | if (!slirp_vc) | |
430 | return; | |
431 | qemu_send_packet(slirp_vc, pkt, pkt_len); | |
432 | } | |
433 | ||
434 | int slirp_is_inited(void) | |
435 | { | |
436 | return slirp_inited; | |
437 | } | |
438 | ||
439 | static void slirp_receive(void *opaque, const uint8_t *buf, int size) | |
440 | { | |
441 | #ifdef DEBUG_SLIRP | |
442 | printf("slirp input:\n"); | |
443 | hex_dump(stdout, buf, size); | |
444 | #endif | |
445 | slirp_input(buf, size); | |
446 | } | |
447 | ||
bf38c1a0 | 448 | static int net_slirp_init(VLANState *vlan, const char *model) |
63a01ef8 AL |
449 | { |
450 | if (!slirp_inited) { | |
451 | slirp_inited = 1; | |
452 | slirp_init(); | |
453 | } | |
bf38c1a0 | 454 | slirp_vc = qemu_new_vlan_client(vlan, model, |
63a01ef8 AL |
455 | slirp_receive, NULL, NULL); |
456 | snprintf(slirp_vc->info_str, sizeof(slirp_vc->info_str), "user redirector"); | |
457 | return 0; | |
458 | } | |
459 | ||
460 | void net_slirp_redir(const char *redir_str) | |
461 | { | |
462 | int is_udp; | |
463 | char buf[256], *r; | |
464 | const char *p; | |
465 | struct in_addr guest_addr; | |
466 | int host_port, guest_port; | |
467 | ||
468 | if (!slirp_inited) { | |
469 | slirp_inited = 1; | |
470 | slirp_init(); | |
471 | } | |
472 | ||
473 | p = redir_str; | |
474 | if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) | |
475 | goto fail; | |
476 | if (!strcmp(buf, "tcp")) { | |
477 | is_udp = 0; | |
478 | } else if (!strcmp(buf, "udp")) { | |
479 | is_udp = 1; | |
480 | } else { | |
481 | goto fail; | |
482 | } | |
483 | ||
484 | if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) | |
485 | goto fail; | |
486 | host_port = strtol(buf, &r, 0); | |
487 | if (r == buf) | |
488 | goto fail; | |
489 | ||
490 | if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) | |
491 | goto fail; | |
492 | if (buf[0] == '\0') { | |
493 | pstrcpy(buf, sizeof(buf), "10.0.2.15"); | |
494 | } | |
495 | if (!inet_aton(buf, &guest_addr)) | |
496 | goto fail; | |
497 | ||
498 | guest_port = strtol(p, &r, 0); | |
499 | if (r == p) | |
500 | goto fail; | |
501 | ||
502 | if (slirp_redir(is_udp, host_port, guest_addr, guest_port) < 0) { | |
503 | fprintf(stderr, "qemu: could not set up redirection\n"); | |
504 | exit(1); | |
505 | } | |
506 | return; | |
507 | fail: | |
508 | fprintf(stderr, "qemu: syntax: -redir [tcp|udp]:host-port:[guest-host]:guest-port\n"); | |
509 | exit(1); | |
510 | } | |
511 | ||
512 | #ifndef _WIN32 | |
513 | ||
514 | static char smb_dir[1024]; | |
515 | ||
516 | static void erase_dir(char *dir_name) | |
517 | { | |
518 | DIR *d; | |
519 | struct dirent *de; | |
520 | char filename[1024]; | |
521 | ||
522 | /* erase all the files in the directory */ | |
523 | if ((d = opendir(dir_name)) != 0) { | |
524 | for(;;) { | |
525 | de = readdir(d); | |
526 | if (!de) | |
527 | break; | |
528 | if (strcmp(de->d_name, ".") != 0 && | |
529 | strcmp(de->d_name, "..") != 0) { | |
530 | snprintf(filename, sizeof(filename), "%s/%s", | |
531 | smb_dir, de->d_name); | |
532 | if (unlink(filename) != 0) /* is it a directory? */ | |
533 | erase_dir(filename); | |
534 | } | |
535 | } | |
536 | closedir(d); | |
537 | rmdir(dir_name); | |
538 | } | |
539 | } | |
540 | ||
541 | /* automatic user mode samba server configuration */ | |
542 | static void smb_exit(void) | |
543 | { | |
544 | erase_dir(smb_dir); | |
545 | } | |
546 | ||
547 | /* automatic user mode samba server configuration */ | |
548 | void net_slirp_smb(const char *exported_dir) | |
549 | { | |
550 | char smb_conf[1024]; | |
551 | char smb_cmdline[1024]; | |
552 | FILE *f; | |
553 | ||
554 | if (!slirp_inited) { | |
555 | slirp_inited = 1; | |
556 | slirp_init(); | |
557 | } | |
558 | ||
559 | /* XXX: better tmp dir construction */ | |
560 | snprintf(smb_dir, sizeof(smb_dir), "/tmp/qemu-smb.%d", getpid()); | |
561 | if (mkdir(smb_dir, 0700) < 0) { | |
562 | fprintf(stderr, "qemu: could not create samba server dir '%s'\n", smb_dir); | |
563 | exit(1); | |
564 | } | |
565 | snprintf(smb_conf, sizeof(smb_conf), "%s/%s", smb_dir, "smb.conf"); | |
566 | ||
567 | f = fopen(smb_conf, "w"); | |
568 | if (!f) { | |
569 | fprintf(stderr, "qemu: could not create samba server configuration file '%s'\n", smb_conf); | |
570 | exit(1); | |
571 | } | |
572 | fprintf(f, | |
573 | "[global]\n" | |
574 | "private dir=%s\n" | |
575 | "smb ports=0\n" | |
576 | "socket address=127.0.0.1\n" | |
577 | "pid directory=%s\n" | |
578 | "lock directory=%s\n" | |
579 | "log file=%s/log.smbd\n" | |
580 | "smb passwd file=%s/smbpasswd\n" | |
581 | "security = share\n" | |
582 | "[qemu]\n" | |
583 | "path=%s\n" | |
584 | "read only=no\n" | |
585 | "guest ok=yes\n", | |
586 | smb_dir, | |
587 | smb_dir, | |
588 | smb_dir, | |
589 | smb_dir, | |
590 | smb_dir, | |
591 | exported_dir | |
592 | ); | |
593 | fclose(f); | |
594 | atexit(smb_exit); | |
595 | ||
596 | snprintf(smb_cmdline, sizeof(smb_cmdline), "%s -s %s", | |
597 | SMBD_COMMAND, smb_conf); | |
598 | ||
599 | slirp_add_exec(0, smb_cmdline, 4, 139); | |
600 | } | |
601 | ||
602 | #endif /* !defined(_WIN32) */ | |
603 | void do_info_slirp(void) | |
604 | { | |
605 | slirp_stats(); | |
606 | } | |
607 | ||
608 | #endif /* CONFIG_SLIRP */ | |
609 | ||
610 | #if !defined(_WIN32) | |
611 | ||
612 | typedef struct TAPState { | |
613 | VLANClientState *vc; | |
614 | int fd; | |
615 | char down_script[1024]; | |
616 | } TAPState; | |
617 | ||
b535b7b2 AL |
618 | #ifdef HAVE_IOVEC |
619 | static ssize_t tap_receive_iov(void *opaque, const struct iovec *iov, | |
620 | int iovcnt) | |
621 | { | |
622 | TAPState *s = opaque; | |
623 | ssize_t len; | |
624 | ||
625 | do { | |
626 | len = writev(s->fd, iov, iovcnt); | |
627 | } while (len == -1 && (errno == EINTR || errno == EAGAIN)); | |
628 | ||
629 | return len; | |
630 | } | |
631 | #endif | |
632 | ||
63a01ef8 AL |
633 | static void tap_receive(void *opaque, const uint8_t *buf, int size) |
634 | { | |
635 | TAPState *s = opaque; | |
636 | int ret; | |
637 | for(;;) { | |
638 | ret = write(s->fd, buf, size); | |
639 | if (ret < 0 && (errno == EINTR || errno == EAGAIN)) { | |
640 | } else { | |
641 | break; | |
642 | } | |
643 | } | |
644 | } | |
645 | ||
646 | static void tap_send(void *opaque) | |
647 | { | |
648 | TAPState *s = opaque; | |
649 | uint8_t buf[4096]; | |
650 | int size; | |
651 | ||
652 | #ifdef __sun__ | |
653 | struct strbuf sbuf; | |
654 | int f = 0; | |
655 | sbuf.maxlen = sizeof(buf); | |
656 | sbuf.buf = buf; | |
657 | size = getmsg(s->fd, NULL, &sbuf, &f) >=0 ? sbuf.len : -1; | |
658 | #else | |
659 | size = read(s->fd, buf, sizeof(buf)); | |
660 | #endif | |
661 | if (size > 0) { | |
662 | qemu_send_packet(s->vc, buf, size); | |
663 | } | |
664 | } | |
665 | ||
666 | /* fd support */ | |
667 | ||
bf38c1a0 | 668 | static TAPState *net_tap_fd_init(VLANState *vlan, const char *model, int fd) |
63a01ef8 AL |
669 | { |
670 | TAPState *s; | |
671 | ||
672 | s = qemu_mallocz(sizeof(TAPState)); | |
673 | if (!s) | |
674 | return NULL; | |
675 | s->fd = fd; | |
bf38c1a0 | 676 | s->vc = qemu_new_vlan_client(vlan, model, tap_receive, NULL, s); |
b535b7b2 AL |
677 | #ifdef HAVE_IOVEC |
678 | s->vc->fd_readv = tap_receive_iov; | |
679 | #endif | |
63a01ef8 AL |
680 | qemu_set_fd_handler(s->fd, tap_send, NULL, s); |
681 | snprintf(s->vc->info_str, sizeof(s->vc->info_str), "tap: fd=%d", fd); | |
682 | return s; | |
683 | } | |
684 | ||
685 | #if defined (_BSD) || defined (__FreeBSD_kernel__) | |
686 | static int tap_open(char *ifname, int ifname_size) | |
687 | { | |
688 | int fd; | |
689 | char *dev; | |
690 | struct stat s; | |
691 | ||
692 | TFR(fd = open("/dev/tap", O_RDWR)); | |
693 | if (fd < 0) { | |
694 | fprintf(stderr, "warning: could not open /dev/tap: no virtual network emulation\n"); | |
695 | return -1; | |
696 | } | |
697 | ||
698 | fstat(fd, &s); | |
699 | dev = devname(s.st_rdev, S_IFCHR); | |
700 | pstrcpy(ifname, ifname_size, dev); | |
701 | ||
702 | fcntl(fd, F_SETFL, O_NONBLOCK); | |
703 | return fd; | |
704 | } | |
705 | #elif defined(__sun__) | |
706 | #define TUNNEWPPA (('T'<<16) | 0x0001) | |
707 | /* | |
708 | * Allocate TAP device, returns opened fd. | |
709 | * Stores dev name in the first arg(must be large enough). | |
710 | */ | |
711 | int tap_alloc(char *dev, size_t dev_size) | |
712 | { | |
713 | int tap_fd, if_fd, ppa = -1; | |
714 | static int ip_fd = 0; | |
715 | char *ptr; | |
716 | ||
717 | static int arp_fd = 0; | |
718 | int ip_muxid, arp_muxid; | |
719 | struct strioctl strioc_if, strioc_ppa; | |
720 | int link_type = I_PLINK;; | |
721 | struct lifreq ifr; | |
722 | char actual_name[32] = ""; | |
723 | ||
724 | memset(&ifr, 0x0, sizeof(ifr)); | |
725 | ||
726 | if( *dev ){ | |
727 | ptr = dev; | |
47398b9c | 728 | while( *ptr && !qemu_isdigit((int)*ptr) ) ptr++; |
63a01ef8 AL |
729 | ppa = atoi(ptr); |
730 | } | |
731 | ||
732 | /* Check if IP device was opened */ | |
733 | if( ip_fd ) | |
734 | close(ip_fd); | |
735 | ||
736 | TFR(ip_fd = open("/dev/udp", O_RDWR, 0)); | |
737 | if (ip_fd < 0) { | |
738 | syslog(LOG_ERR, "Can't open /dev/ip (actually /dev/udp)"); | |
739 | return -1; | |
740 | } | |
741 | ||
742 | TFR(tap_fd = open("/dev/tap", O_RDWR, 0)); | |
743 | if (tap_fd < 0) { | |
744 | syslog(LOG_ERR, "Can't open /dev/tap"); | |
745 | return -1; | |
746 | } | |
747 | ||
748 | /* Assign a new PPA and get its unit number. */ | |
749 | strioc_ppa.ic_cmd = TUNNEWPPA; | |
750 | strioc_ppa.ic_timout = 0; | |
751 | strioc_ppa.ic_len = sizeof(ppa); | |
752 | strioc_ppa.ic_dp = (char *)&ppa; | |
753 | if ((ppa = ioctl (tap_fd, I_STR, &strioc_ppa)) < 0) | |
754 | syslog (LOG_ERR, "Can't assign new interface"); | |
755 | ||
756 | TFR(if_fd = open("/dev/tap", O_RDWR, 0)); | |
757 | if (if_fd < 0) { | |
758 | syslog(LOG_ERR, "Can't open /dev/tap (2)"); | |
759 | return -1; | |
760 | } | |
761 | if(ioctl(if_fd, I_PUSH, "ip") < 0){ | |
762 | syslog(LOG_ERR, "Can't push IP module"); | |
763 | return -1; | |
764 | } | |
765 | ||
766 | if (ioctl(if_fd, SIOCGLIFFLAGS, &ifr) < 0) | |
767 | syslog(LOG_ERR, "Can't get flags\n"); | |
768 | ||
769 | snprintf (actual_name, 32, "tap%d", ppa); | |
770 | pstrcpy(ifr.lifr_name, sizeof(ifr.lifr_name), actual_name); | |
771 | ||
772 | ifr.lifr_ppa = ppa; | |
773 | /* Assign ppa according to the unit number returned by tun device */ | |
774 | ||
775 | if (ioctl (if_fd, SIOCSLIFNAME, &ifr) < 0) | |
776 | syslog (LOG_ERR, "Can't set PPA %d", ppa); | |
777 | if (ioctl(if_fd, SIOCGLIFFLAGS, &ifr) <0) | |
778 | syslog (LOG_ERR, "Can't get flags\n"); | |
779 | /* Push arp module to if_fd */ | |
780 | if (ioctl (if_fd, I_PUSH, "arp") < 0) | |
781 | syslog (LOG_ERR, "Can't push ARP module (2)"); | |
782 | ||
783 | /* Push arp module to ip_fd */ | |
784 | if (ioctl (ip_fd, I_POP, NULL) < 0) | |
785 | syslog (LOG_ERR, "I_POP failed\n"); | |
786 | if (ioctl (ip_fd, I_PUSH, "arp") < 0) | |
787 | syslog (LOG_ERR, "Can't push ARP module (3)\n"); | |
788 | /* Open arp_fd */ | |
789 | TFR(arp_fd = open ("/dev/tap", O_RDWR, 0)); | |
790 | if (arp_fd < 0) | |
791 | syslog (LOG_ERR, "Can't open %s\n", "/dev/tap"); | |
792 | ||
793 | /* Set ifname to arp */ | |
794 | strioc_if.ic_cmd = SIOCSLIFNAME; | |
795 | strioc_if.ic_timout = 0; | |
796 | strioc_if.ic_len = sizeof(ifr); | |
797 | strioc_if.ic_dp = (char *)𝔦 | |
798 | if (ioctl(arp_fd, I_STR, &strioc_if) < 0){ | |
799 | syslog (LOG_ERR, "Can't set ifname to arp\n"); | |
800 | } | |
801 | ||
802 | if((ip_muxid = ioctl(ip_fd, I_LINK, if_fd)) < 0){ | |
803 | syslog(LOG_ERR, "Can't link TAP device to IP"); | |
804 | return -1; | |
805 | } | |
806 | ||
807 | if ((arp_muxid = ioctl (ip_fd, link_type, arp_fd)) < 0) | |
808 | syslog (LOG_ERR, "Can't link TAP device to ARP"); | |
809 | ||
810 | close (if_fd); | |
811 | ||
812 | memset(&ifr, 0x0, sizeof(ifr)); | |
813 | pstrcpy(ifr.lifr_name, sizeof(ifr.lifr_name), actual_name); | |
814 | ifr.lifr_ip_muxid = ip_muxid; | |
815 | ifr.lifr_arp_muxid = arp_muxid; | |
816 | ||
817 | if (ioctl (ip_fd, SIOCSLIFMUXID, &ifr) < 0) | |
818 | { | |
819 | ioctl (ip_fd, I_PUNLINK , arp_muxid); | |
820 | ioctl (ip_fd, I_PUNLINK, ip_muxid); | |
821 | syslog (LOG_ERR, "Can't set multiplexor id"); | |
822 | } | |
823 | ||
824 | snprintf(dev, dev_size, "tap%d", ppa); | |
825 | return tap_fd; | |
826 | } | |
827 | ||
828 | static int tap_open(char *ifname, int ifname_size) | |
829 | { | |
830 | char dev[10]=""; | |
831 | int fd; | |
832 | if( (fd = tap_alloc(dev, sizeof(dev))) < 0 ){ | |
833 | fprintf(stderr, "Cannot allocate TAP device\n"); | |
834 | return -1; | |
835 | } | |
836 | pstrcpy(ifname, ifname_size, dev); | |
837 | fcntl(fd, F_SETFL, O_NONBLOCK); | |
838 | return fd; | |
839 | } | |
b29fe3ed | 840 | #elif defined (_AIX) |
841 | static int tap_open(char *ifname, int ifname_size) | |
842 | { | |
843 | fprintf (stderr, "no tap on AIX\n"); | |
844 | return -1; | |
845 | } | |
63a01ef8 AL |
846 | #else |
847 | static int tap_open(char *ifname, int ifname_size) | |
848 | { | |
849 | struct ifreq ifr; | |
850 | int fd, ret; | |
851 | ||
852 | TFR(fd = open("/dev/net/tun", O_RDWR)); | |
853 | if (fd < 0) { | |
854 | fprintf(stderr, "warning: could not open /dev/net/tun: no virtual network emulation\n"); | |
855 | return -1; | |
856 | } | |
857 | memset(&ifr, 0, sizeof(ifr)); | |
858 | ifr.ifr_flags = IFF_TAP | IFF_NO_PI; | |
859 | if (ifname[0] != '\0') | |
860 | pstrcpy(ifr.ifr_name, IFNAMSIZ, ifname); | |
861 | else | |
862 | pstrcpy(ifr.ifr_name, IFNAMSIZ, "tap%d"); | |
863 | ret = ioctl(fd, TUNSETIFF, (void *) &ifr); | |
864 | if (ret != 0) { | |
865 | fprintf(stderr, "warning: could not configure /dev/net/tun: no virtual network emulation\n"); | |
866 | close(fd); | |
867 | return -1; | |
868 | } | |
869 | pstrcpy(ifname, ifname_size, ifr.ifr_name); | |
870 | fcntl(fd, F_SETFL, O_NONBLOCK); | |
871 | return fd; | |
872 | } | |
873 | #endif | |
874 | ||
875 | static int launch_script(const char *setup_script, const char *ifname, int fd) | |
876 | { | |
877 | int pid, status; | |
878 | char *args[3]; | |
879 | char **parg; | |
880 | ||
881 | /* try to launch network script */ | |
882 | pid = fork(); | |
883 | if (pid >= 0) { | |
884 | if (pid == 0) { | |
885 | int open_max = sysconf (_SC_OPEN_MAX), i; | |
886 | for (i = 0; i < open_max; i++) | |
887 | if (i != STDIN_FILENO && | |
888 | i != STDOUT_FILENO && | |
889 | i != STDERR_FILENO && | |
890 | i != fd) | |
891 | close(i); | |
892 | ||
893 | parg = args; | |
894 | *parg++ = (char *)setup_script; | |
895 | *parg++ = (char *)ifname; | |
896 | *parg++ = NULL; | |
897 | execv(setup_script, args); | |
898 | _exit(1); | |
899 | } | |
900 | while (waitpid(pid, &status, 0) != pid); | |
901 | if (!WIFEXITED(status) || | |
902 | WEXITSTATUS(status) != 0) { | |
903 | fprintf(stderr, "%s: could not launch network script\n", | |
904 | setup_script); | |
905 | return -1; | |
906 | } | |
907 | } | |
908 | return 0; | |
909 | } | |
910 | ||
bf38c1a0 | 911 | static int net_tap_init(VLANState *vlan, const char *model, const char *ifname1, |
63a01ef8 AL |
912 | const char *setup_script, const char *down_script) |
913 | { | |
914 | TAPState *s; | |
915 | int fd; | |
916 | char ifname[128]; | |
917 | ||
918 | if (ifname1 != NULL) | |
919 | pstrcpy(ifname, sizeof(ifname), ifname1); | |
920 | else | |
921 | ifname[0] = '\0'; | |
922 | TFR(fd = tap_open(ifname, sizeof(ifname))); | |
923 | if (fd < 0) | |
924 | return -1; | |
925 | ||
926 | if (!setup_script || !strcmp(setup_script, "no")) | |
927 | setup_script = ""; | |
928 | if (setup_script[0] != '\0') { | |
929 | if (launch_script(setup_script, ifname, fd)) | |
930 | return -1; | |
931 | } | |
bf38c1a0 | 932 | s = net_tap_fd_init(vlan, model, fd); |
63a01ef8 AL |
933 | if (!s) |
934 | return -1; | |
935 | snprintf(s->vc->info_str, sizeof(s->vc->info_str), | |
936 | "tap: ifname=%s setup_script=%s", ifname, setup_script); | |
937 | if (down_script && strcmp(down_script, "no")) | |
938 | snprintf(s->down_script, sizeof(s->down_script), "%s", down_script); | |
939 | return 0; | |
940 | } | |
941 | ||
942 | #endif /* !_WIN32 */ | |
943 | ||
944 | #if defined(CONFIG_VDE) | |
945 | typedef struct VDEState { | |
946 | VLANClientState *vc; | |
947 | VDECONN *vde; | |
948 | } VDEState; | |
949 | ||
950 | static void vde_to_qemu(void *opaque) | |
951 | { | |
952 | VDEState *s = opaque; | |
953 | uint8_t buf[4096]; | |
954 | int size; | |
955 | ||
956 | size = vde_recv(s->vde, buf, sizeof(buf), 0); | |
957 | if (size > 0) { | |
958 | qemu_send_packet(s->vc, buf, size); | |
959 | } | |
960 | } | |
961 | ||
962 | static void vde_from_qemu(void *opaque, const uint8_t *buf, int size) | |
963 | { | |
964 | VDEState *s = opaque; | |
965 | int ret; | |
966 | for(;;) { | |
967 | ret = vde_send(s->vde, buf, size, 0); | |
968 | if (ret < 0 && errno == EINTR) { | |
969 | } else { | |
970 | break; | |
971 | } | |
972 | } | |
973 | } | |
974 | ||
bf38c1a0 AL |
975 | static int net_vde_init(VLANState *vlan, const char *model, const char *sock, |
976 | int port, const char *group, int mode) | |
63a01ef8 AL |
977 | { |
978 | VDEState *s; | |
979 | char *init_group = strlen(group) ? (char *)group : NULL; | |
980 | char *init_sock = strlen(sock) ? (char *)sock : NULL; | |
981 | ||
982 | struct vde_open_args args = { | |
983 | .port = port, | |
984 | .group = init_group, | |
985 | .mode = mode, | |
986 | }; | |
987 | ||
988 | s = qemu_mallocz(sizeof(VDEState)); | |
989 | if (!s) | |
990 | return -1; | |
991 | s->vde = vde_open(init_sock, "QEMU", &args); | |
992 | if (!s->vde){ | |
993 | free(s); | |
994 | return -1; | |
995 | } | |
bf38c1a0 | 996 | s->vc = qemu_new_vlan_client(vlan, model, vde_from_qemu, NULL, s); |
63a01ef8 AL |
997 | qemu_set_fd_handler(vde_datafd(s->vde), vde_to_qemu, NULL, s); |
998 | snprintf(s->vc->info_str, sizeof(s->vc->info_str), "vde: sock=%s fd=%d", | |
999 | sock, vde_datafd(s->vde)); | |
1000 | return 0; | |
1001 | } | |
1002 | #endif | |
1003 | ||
1004 | /* network connection */ | |
1005 | typedef struct NetSocketState { | |
1006 | VLANClientState *vc; | |
1007 | int fd; | |
1008 | int state; /* 0 = getting length, 1 = getting data */ | |
1009 | int index; | |
1010 | int packet_len; | |
1011 | uint8_t buf[4096]; | |
1012 | struct sockaddr_in dgram_dst; /* contains inet host and port destination iff connectionless (SOCK_DGRAM) */ | |
1013 | } NetSocketState; | |
1014 | ||
1015 | typedef struct NetSocketListenState { | |
1016 | VLANState *vlan; | |
bf38c1a0 | 1017 | char *model; |
63a01ef8 AL |
1018 | int fd; |
1019 | } NetSocketListenState; | |
1020 | ||
1021 | /* XXX: we consider we can send the whole packet without blocking */ | |
1022 | static void net_socket_receive(void *opaque, const uint8_t *buf, int size) | |
1023 | { | |
1024 | NetSocketState *s = opaque; | |
1025 | uint32_t len; | |
1026 | len = htonl(size); | |
1027 | ||
1028 | send_all(s->fd, (const uint8_t *)&len, sizeof(len)); | |
1029 | send_all(s->fd, buf, size); | |
1030 | } | |
1031 | ||
1032 | static void net_socket_receive_dgram(void *opaque, const uint8_t *buf, int size) | |
1033 | { | |
1034 | NetSocketState *s = opaque; | |
1035 | sendto(s->fd, buf, size, 0, | |
1036 | (struct sockaddr *)&s->dgram_dst, sizeof(s->dgram_dst)); | |
1037 | } | |
1038 | ||
1039 | static void net_socket_send(void *opaque) | |
1040 | { | |
1041 | NetSocketState *s = opaque; | |
1042 | int l, size, err; | |
1043 | uint8_t buf1[4096]; | |
1044 | const uint8_t *buf; | |
1045 | ||
1046 | size = recv(s->fd, buf1, sizeof(buf1), 0); | |
1047 | if (size < 0) { | |
1048 | err = socket_error(); | |
1049 | if (err != EWOULDBLOCK) | |
1050 | goto eoc; | |
1051 | } else if (size == 0) { | |
1052 | /* end of connection */ | |
1053 | eoc: | |
1054 | qemu_set_fd_handler(s->fd, NULL, NULL, NULL); | |
1055 | closesocket(s->fd); | |
1056 | return; | |
1057 | } | |
1058 | buf = buf1; | |
1059 | while (size > 0) { | |
1060 | /* reassemble a packet from the network */ | |
1061 | switch(s->state) { | |
1062 | case 0: | |
1063 | l = 4 - s->index; | |
1064 | if (l > size) | |
1065 | l = size; | |
1066 | memcpy(s->buf + s->index, buf, l); | |
1067 | buf += l; | |
1068 | size -= l; | |
1069 | s->index += l; | |
1070 | if (s->index == 4) { | |
1071 | /* got length */ | |
1072 | s->packet_len = ntohl(*(uint32_t *)s->buf); | |
1073 | s->index = 0; | |
1074 | s->state = 1; | |
1075 | } | |
1076 | break; | |
1077 | case 1: | |
1078 | l = s->packet_len - s->index; | |
1079 | if (l > size) | |
1080 | l = size; | |
1081 | memcpy(s->buf + s->index, buf, l); | |
1082 | s->index += l; | |
1083 | buf += l; | |
1084 | size -= l; | |
1085 | if (s->index >= s->packet_len) { | |
1086 | qemu_send_packet(s->vc, s->buf, s->packet_len); | |
1087 | s->index = 0; | |
1088 | s->state = 0; | |
1089 | } | |
1090 | break; | |
1091 | } | |
1092 | } | |
1093 | } | |
1094 | ||
1095 | static void net_socket_send_dgram(void *opaque) | |
1096 | { | |
1097 | NetSocketState *s = opaque; | |
1098 | int size; | |
1099 | ||
1100 | size = recv(s->fd, s->buf, sizeof(s->buf), 0); | |
1101 | if (size < 0) | |
1102 | return; | |
1103 | if (size == 0) { | |
1104 | /* end of connection */ | |
1105 | qemu_set_fd_handler(s->fd, NULL, NULL, NULL); | |
1106 | return; | |
1107 | } | |
1108 | qemu_send_packet(s->vc, s->buf, size); | |
1109 | } | |
1110 | ||
1111 | static int net_socket_mcast_create(struct sockaddr_in *mcastaddr) | |
1112 | { | |
1113 | struct ip_mreq imr; | |
1114 | int fd; | |
1115 | int val, ret; | |
1116 | if (!IN_MULTICAST(ntohl(mcastaddr->sin_addr.s_addr))) { | |
1117 | fprintf(stderr, "qemu: error: specified mcastaddr \"%s\" (0x%08x) does not contain a multicast address\n", | |
1118 | inet_ntoa(mcastaddr->sin_addr), | |
1119 | (int)ntohl(mcastaddr->sin_addr.s_addr)); | |
1120 | return -1; | |
1121 | ||
1122 | } | |
1123 | fd = socket(PF_INET, SOCK_DGRAM, 0); | |
1124 | if (fd < 0) { | |
1125 | perror("socket(PF_INET, SOCK_DGRAM)"); | |
1126 | return -1; | |
1127 | } | |
1128 | ||
1129 | val = 1; | |
1130 | ret=setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, | |
1131 | (const char *)&val, sizeof(val)); | |
1132 | if (ret < 0) { | |
1133 | perror("setsockopt(SOL_SOCKET, SO_REUSEADDR)"); | |
1134 | goto fail; | |
1135 | } | |
1136 | ||
1137 | ret = bind(fd, (struct sockaddr *)mcastaddr, sizeof(*mcastaddr)); | |
1138 | if (ret < 0) { | |
1139 | perror("bind"); | |
1140 | goto fail; | |
1141 | } | |
1142 | ||
1143 | /* Add host to multicast group */ | |
1144 | imr.imr_multiaddr = mcastaddr->sin_addr; | |
1145 | imr.imr_interface.s_addr = htonl(INADDR_ANY); | |
1146 | ||
1147 | ret = setsockopt(fd, IPPROTO_IP, IP_ADD_MEMBERSHIP, | |
1148 | (const char *)&imr, sizeof(struct ip_mreq)); | |
1149 | if (ret < 0) { | |
1150 | perror("setsockopt(IP_ADD_MEMBERSHIP)"); | |
1151 | goto fail; | |
1152 | } | |
1153 | ||
1154 | /* Force mcast msgs to loopback (eg. several QEMUs in same host */ | |
1155 | val = 1; | |
1156 | ret=setsockopt(fd, IPPROTO_IP, IP_MULTICAST_LOOP, | |
1157 | (const char *)&val, sizeof(val)); | |
1158 | if (ret < 0) { | |
1159 | perror("setsockopt(SOL_IP, IP_MULTICAST_LOOP)"); | |
1160 | goto fail; | |
1161 | } | |
1162 | ||
1163 | socket_set_nonblock(fd); | |
1164 | return fd; | |
1165 | fail: | |
1166 | if (fd >= 0) | |
1167 | closesocket(fd); | |
1168 | return -1; | |
1169 | } | |
1170 | ||
bf38c1a0 AL |
1171 | static NetSocketState *net_socket_fd_init_dgram(VLANState *vlan, const char *model, |
1172 | int fd, int is_connected) | |
63a01ef8 AL |
1173 | { |
1174 | struct sockaddr_in saddr; | |
1175 | int newfd; | |
1176 | socklen_t saddr_len; | |
1177 | NetSocketState *s; | |
1178 | ||
1179 | /* fd passed: multicast: "learn" dgram_dst address from bound address and save it | |
1180 | * Because this may be "shared" socket from a "master" process, datagrams would be recv() | |
1181 | * by ONLY ONE process: we must "clone" this dgram socket --jjo | |
1182 | */ | |
1183 | ||
1184 | if (is_connected) { | |
1185 | if (getsockname(fd, (struct sockaddr *) &saddr, &saddr_len) == 0) { | |
1186 | /* must be bound */ | |
1187 | if (saddr.sin_addr.s_addr==0) { | |
1188 | fprintf(stderr, "qemu: error: init_dgram: fd=%d unbound, cannot setup multicast dst addr\n", | |
1189 | fd); | |
1190 | return NULL; | |
1191 | } | |
1192 | /* clone dgram socket */ | |
1193 | newfd = net_socket_mcast_create(&saddr); | |
1194 | if (newfd < 0) { | |
1195 | /* error already reported by net_socket_mcast_create() */ | |
1196 | close(fd); | |
1197 | return NULL; | |
1198 | } | |
1199 | /* clone newfd to fd, close newfd */ | |
1200 | dup2(newfd, fd); | |
1201 | close(newfd); | |
1202 | ||
1203 | } else { | |
1204 | fprintf(stderr, "qemu: error: init_dgram: fd=%d failed getsockname(): %s\n", | |
1205 | fd, strerror(errno)); | |
1206 | return NULL; | |
1207 | } | |
1208 | } | |
1209 | ||
1210 | s = qemu_mallocz(sizeof(NetSocketState)); | |
1211 | if (!s) | |
1212 | return NULL; | |
1213 | s->fd = fd; | |
1214 | ||
bf38c1a0 | 1215 | s->vc = qemu_new_vlan_client(vlan, model, net_socket_receive_dgram, NULL, s); |
63a01ef8 AL |
1216 | qemu_set_fd_handler(s->fd, net_socket_send_dgram, NULL, s); |
1217 | ||
1218 | /* mcast: save bound address as dst */ | |
1219 | if (is_connected) s->dgram_dst=saddr; | |
1220 | ||
1221 | snprintf(s->vc->info_str, sizeof(s->vc->info_str), | |
1222 | "socket: fd=%d (%s mcast=%s:%d)", | |
1223 | fd, is_connected? "cloned" : "", | |
1224 | inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port)); | |
1225 | return s; | |
1226 | } | |
1227 | ||
1228 | static void net_socket_connect(void *opaque) | |
1229 | { | |
1230 | NetSocketState *s = opaque; | |
1231 | qemu_set_fd_handler(s->fd, net_socket_send, NULL, s); | |
1232 | } | |
1233 | ||
bf38c1a0 AL |
1234 | static NetSocketState *net_socket_fd_init_stream(VLANState *vlan, const char *model, |
1235 | int fd, int is_connected) | |
63a01ef8 AL |
1236 | { |
1237 | NetSocketState *s; | |
1238 | s = qemu_mallocz(sizeof(NetSocketState)); | |
1239 | if (!s) | |
1240 | return NULL; | |
1241 | s->fd = fd; | |
bf38c1a0 | 1242 | s->vc = qemu_new_vlan_client(vlan, model, |
63a01ef8 AL |
1243 | net_socket_receive, NULL, s); |
1244 | snprintf(s->vc->info_str, sizeof(s->vc->info_str), | |
1245 | "socket: fd=%d", fd); | |
1246 | if (is_connected) { | |
1247 | net_socket_connect(s); | |
1248 | } else { | |
1249 | qemu_set_fd_handler(s->fd, NULL, net_socket_connect, s); | |
1250 | } | |
1251 | return s; | |
1252 | } | |
1253 | ||
bf38c1a0 AL |
1254 | static NetSocketState *net_socket_fd_init(VLANState *vlan, const char *model, |
1255 | int fd, int is_connected) | |
63a01ef8 AL |
1256 | { |
1257 | int so_type=-1, optlen=sizeof(so_type); | |
1258 | ||
1259 | if(getsockopt(fd, SOL_SOCKET, SO_TYPE, (char *)&so_type, | |
1260 | (socklen_t *)&optlen)< 0) { | |
1261 | fprintf(stderr, "qemu: error: getsockopt(SO_TYPE) for fd=%d failed\n", fd); | |
1262 | return NULL; | |
1263 | } | |
1264 | switch(so_type) { | |
1265 | case SOCK_DGRAM: | |
bf38c1a0 | 1266 | return net_socket_fd_init_dgram(vlan, model, fd, is_connected); |
63a01ef8 | 1267 | case SOCK_STREAM: |
bf38c1a0 | 1268 | return net_socket_fd_init_stream(vlan, model, fd, is_connected); |
63a01ef8 AL |
1269 | default: |
1270 | /* who knows ... this could be a eg. a pty, do warn and continue as stream */ | |
1271 | fprintf(stderr, "qemu: warning: socket type=%d for fd=%d is not SOCK_DGRAM or SOCK_STREAM\n", so_type, fd); | |
bf38c1a0 | 1272 | return net_socket_fd_init_stream(vlan, model, fd, is_connected); |
63a01ef8 AL |
1273 | } |
1274 | return NULL; | |
1275 | } | |
1276 | ||
1277 | static void net_socket_accept(void *opaque) | |
1278 | { | |
1279 | NetSocketListenState *s = opaque; | |
1280 | NetSocketState *s1; | |
1281 | struct sockaddr_in saddr; | |
1282 | socklen_t len; | |
1283 | int fd; | |
1284 | ||
1285 | for(;;) { | |
1286 | len = sizeof(saddr); | |
1287 | fd = accept(s->fd, (struct sockaddr *)&saddr, &len); | |
1288 | if (fd < 0 && errno != EINTR) { | |
1289 | return; | |
1290 | } else if (fd >= 0) { | |
1291 | break; | |
1292 | } | |
1293 | } | |
bf38c1a0 | 1294 | s1 = net_socket_fd_init(s->vlan, s->model, fd, 1); |
63a01ef8 AL |
1295 | if (!s1) { |
1296 | closesocket(fd); | |
1297 | } else { | |
1298 | snprintf(s1->vc->info_str, sizeof(s1->vc->info_str), | |
1299 | "socket: connection from %s:%d", | |
1300 | inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port)); | |
1301 | } | |
1302 | } | |
1303 | ||
bf38c1a0 AL |
1304 | static int net_socket_listen_init(VLANState *vlan, const char *model, |
1305 | const char *host_str) | |
63a01ef8 AL |
1306 | { |
1307 | NetSocketListenState *s; | |
1308 | int fd, val, ret; | |
1309 | struct sockaddr_in saddr; | |
1310 | ||
1311 | if (parse_host_port(&saddr, host_str) < 0) | |
1312 | return -1; | |
1313 | ||
1314 | s = qemu_mallocz(sizeof(NetSocketListenState)); | |
1315 | if (!s) | |
1316 | return -1; | |
1317 | ||
1318 | fd = socket(PF_INET, SOCK_STREAM, 0); | |
1319 | if (fd < 0) { | |
1320 | perror("socket"); | |
1321 | return -1; | |
1322 | } | |
1323 | socket_set_nonblock(fd); | |
1324 | ||
1325 | /* allow fast reuse */ | |
1326 | val = 1; | |
1327 | setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, (const char *)&val, sizeof(val)); | |
1328 | ||
1329 | ret = bind(fd, (struct sockaddr *)&saddr, sizeof(saddr)); | |
1330 | if (ret < 0) { | |
1331 | perror("bind"); | |
1332 | return -1; | |
1333 | } | |
1334 | ret = listen(fd, 0); | |
1335 | if (ret < 0) { | |
1336 | perror("listen"); | |
1337 | return -1; | |
1338 | } | |
1339 | s->vlan = vlan; | |
bf38c1a0 | 1340 | s->model = strdup(model); |
63a01ef8 AL |
1341 | s->fd = fd; |
1342 | qemu_set_fd_handler(fd, net_socket_accept, NULL, s); | |
1343 | return 0; | |
1344 | } | |
1345 | ||
bf38c1a0 AL |
1346 | static int net_socket_connect_init(VLANState *vlan, const char *model, |
1347 | const char *host_str) | |
63a01ef8 AL |
1348 | { |
1349 | NetSocketState *s; | |
1350 | int fd, connected, ret, err; | |
1351 | struct sockaddr_in saddr; | |
1352 | ||
1353 | if (parse_host_port(&saddr, host_str) < 0) | |
1354 | return -1; | |
1355 | ||
1356 | fd = socket(PF_INET, SOCK_STREAM, 0); | |
1357 | if (fd < 0) { | |
1358 | perror("socket"); | |
1359 | return -1; | |
1360 | } | |
1361 | socket_set_nonblock(fd); | |
1362 | ||
1363 | connected = 0; | |
1364 | for(;;) { | |
1365 | ret = connect(fd, (struct sockaddr *)&saddr, sizeof(saddr)); | |
1366 | if (ret < 0) { | |
1367 | err = socket_error(); | |
1368 | if (err == EINTR || err == EWOULDBLOCK) { | |
1369 | } else if (err == EINPROGRESS) { | |
1370 | break; | |
1371 | #ifdef _WIN32 | |
1372 | } else if (err == WSAEALREADY) { | |
1373 | break; | |
1374 | #endif | |
1375 | } else { | |
1376 | perror("connect"); | |
1377 | closesocket(fd); | |
1378 | return -1; | |
1379 | } | |
1380 | } else { | |
1381 | connected = 1; | |
1382 | break; | |
1383 | } | |
1384 | } | |
bf38c1a0 | 1385 | s = net_socket_fd_init(vlan, model, fd, connected); |
63a01ef8 AL |
1386 | if (!s) |
1387 | return -1; | |
1388 | snprintf(s->vc->info_str, sizeof(s->vc->info_str), | |
1389 | "socket: connect to %s:%d", | |
1390 | inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port)); | |
1391 | return 0; | |
1392 | } | |
1393 | ||
bf38c1a0 AL |
1394 | static int net_socket_mcast_init(VLANState *vlan, const char *model, |
1395 | const char *host_str) | |
63a01ef8 AL |
1396 | { |
1397 | NetSocketState *s; | |
1398 | int fd; | |
1399 | struct sockaddr_in saddr; | |
1400 | ||
1401 | if (parse_host_port(&saddr, host_str) < 0) | |
1402 | return -1; | |
1403 | ||
1404 | ||
1405 | fd = net_socket_mcast_create(&saddr); | |
1406 | if (fd < 0) | |
1407 | return -1; | |
1408 | ||
bf38c1a0 | 1409 | s = net_socket_fd_init(vlan, model, fd, 0); |
63a01ef8 AL |
1410 | if (!s) |
1411 | return -1; | |
1412 | ||
1413 | s->dgram_dst = saddr; | |
1414 | ||
1415 | snprintf(s->vc->info_str, sizeof(s->vc->info_str), | |
1416 | "socket: mcast=%s:%d", | |
1417 | inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port)); | |
1418 | return 0; | |
1419 | ||
1420 | } | |
1421 | ||
1422 | /* find or alloc a new VLAN */ | |
1423 | VLANState *qemu_find_vlan(int id) | |
1424 | { | |
1425 | VLANState **pvlan, *vlan; | |
1426 | for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) { | |
1427 | if (vlan->id == id) | |
1428 | return vlan; | |
1429 | } | |
1430 | vlan = qemu_mallocz(sizeof(VLANState)); | |
1431 | if (!vlan) | |
1432 | return NULL; | |
1433 | vlan->id = id; | |
1434 | vlan->next = NULL; | |
1435 | pvlan = &first_vlan; | |
1436 | while (*pvlan != NULL) | |
1437 | pvlan = &(*pvlan)->next; | |
1438 | *pvlan = vlan; | |
1439 | return vlan; | |
1440 | } | |
1441 | ||
1442 | int net_client_init(const char *device, const char *p) | |
1443 | { | |
1444 | char buf[1024]; | |
1445 | int vlan_id, ret; | |
1446 | VLANState *vlan; | |
1447 | ||
1448 | vlan_id = 0; | |
1449 | if (get_param_value(buf, sizeof(buf), "vlan", p)) { | |
1450 | vlan_id = strtol(buf, NULL, 0); | |
1451 | } | |
1452 | vlan = qemu_find_vlan(vlan_id); | |
1453 | if (!vlan) { | |
1454 | fprintf(stderr, "Could not create vlan %d\n", vlan_id); | |
1455 | return -1; | |
1456 | } | |
1457 | if (!strcmp(device, "nic")) { | |
1458 | NICInfo *nd; | |
1459 | uint8_t *macaddr; | |
1460 | ||
1461 | if (nb_nics >= MAX_NICS) { | |
1462 | fprintf(stderr, "Too Many NICs\n"); | |
1463 | return -1; | |
1464 | } | |
1465 | nd = &nd_table[nb_nics]; | |
1466 | macaddr = nd->macaddr; | |
1467 | macaddr[0] = 0x52; | |
1468 | macaddr[1] = 0x54; | |
1469 | macaddr[2] = 0x00; | |
1470 | macaddr[3] = 0x12; | |
1471 | macaddr[4] = 0x34; | |
1472 | macaddr[5] = 0x56 + nb_nics; | |
1473 | ||
1474 | if (get_param_value(buf, sizeof(buf), "macaddr", p)) { | |
1475 | if (parse_macaddr(macaddr, buf) < 0) { | |
1476 | fprintf(stderr, "invalid syntax for ethernet address\n"); | |
1477 | return -1; | |
1478 | } | |
1479 | } | |
1480 | if (get_param_value(buf, sizeof(buf), "model", p)) { | |
1481 | nd->model = strdup(buf); | |
1482 | } | |
1483 | nd->vlan = vlan; | |
1484 | nb_nics++; | |
1485 | vlan->nb_guest_devs++; | |
1486 | ret = 0; | |
1487 | } else | |
1488 | if (!strcmp(device, "none")) { | |
1489 | /* does nothing. It is needed to signal that no network cards | |
1490 | are wanted */ | |
1491 | ret = 0; | |
1492 | } else | |
1493 | #ifdef CONFIG_SLIRP | |
1494 | if (!strcmp(device, "user")) { | |
1495 | if (get_param_value(buf, sizeof(buf), "hostname", p)) { | |
1496 | pstrcpy(slirp_hostname, sizeof(slirp_hostname), buf); | |
1497 | } | |
1498 | vlan->nb_host_devs++; | |
bf38c1a0 | 1499 | ret = net_slirp_init(vlan, device); |
63a01ef8 AL |
1500 | } else |
1501 | #endif | |
1502 | #ifdef _WIN32 | |
1503 | if (!strcmp(device, "tap")) { | |
1504 | char ifname[64]; | |
1505 | if (get_param_value(ifname, sizeof(ifname), "ifname", p) <= 0) { | |
1506 | fprintf(stderr, "tap: no interface name\n"); | |
1507 | return -1; | |
1508 | } | |
1509 | vlan->nb_host_devs++; | |
bf38c1a0 | 1510 | ret = tap_win32_init(vlan, device, ifname); |
63a01ef8 | 1511 | } else |
b29fe3ed | 1512 | #elif defined (_AIX) |
63a01ef8 AL |
1513 | #else |
1514 | if (!strcmp(device, "tap")) { | |
1515 | char ifname[64]; | |
1516 | char setup_script[1024], down_script[1024]; | |
1517 | int fd; | |
1518 | vlan->nb_host_devs++; | |
1519 | if (get_param_value(buf, sizeof(buf), "fd", p) > 0) { | |
1520 | fd = strtol(buf, NULL, 0); | |
1521 | fcntl(fd, F_SETFL, O_NONBLOCK); | |
1522 | ret = -1; | |
bf38c1a0 | 1523 | if (net_tap_fd_init(vlan, device, fd)) |
63a01ef8 AL |
1524 | ret = 0; |
1525 | } else { | |
1526 | if (get_param_value(ifname, sizeof(ifname), "ifname", p) <= 0) { | |
1527 | ifname[0] = '\0'; | |
1528 | } | |
1529 | if (get_param_value(setup_script, sizeof(setup_script), "script", p) == 0) { | |
1530 | pstrcpy(setup_script, sizeof(setup_script), DEFAULT_NETWORK_SCRIPT); | |
1531 | } | |
1532 | if (get_param_value(down_script, sizeof(down_script), "downscript", p) == 0) { | |
1533 | pstrcpy(down_script, sizeof(down_script), DEFAULT_NETWORK_DOWN_SCRIPT); | |
1534 | } | |
bf38c1a0 | 1535 | ret = net_tap_init(vlan, device, ifname, setup_script, down_script); |
63a01ef8 AL |
1536 | } |
1537 | } else | |
1538 | #endif | |
1539 | if (!strcmp(device, "socket")) { | |
1540 | if (get_param_value(buf, sizeof(buf), "fd", p) > 0) { | |
1541 | int fd; | |
1542 | fd = strtol(buf, NULL, 0); | |
1543 | ret = -1; | |
bf38c1a0 | 1544 | if (net_socket_fd_init(vlan, device, fd, 1)) |
63a01ef8 AL |
1545 | ret = 0; |
1546 | } else if (get_param_value(buf, sizeof(buf), "listen", p) > 0) { | |
bf38c1a0 | 1547 | ret = net_socket_listen_init(vlan, device, buf); |
63a01ef8 | 1548 | } else if (get_param_value(buf, sizeof(buf), "connect", p) > 0) { |
bf38c1a0 | 1549 | ret = net_socket_connect_init(vlan, device, buf); |
63a01ef8 | 1550 | } else if (get_param_value(buf, sizeof(buf), "mcast", p) > 0) { |
bf38c1a0 | 1551 | ret = net_socket_mcast_init(vlan, device, buf); |
63a01ef8 AL |
1552 | } else { |
1553 | fprintf(stderr, "Unknown socket options: %s\n", p); | |
1554 | return -1; | |
1555 | } | |
1556 | vlan->nb_host_devs++; | |
1557 | } else | |
1558 | #ifdef CONFIG_VDE | |
1559 | if (!strcmp(device, "vde")) { | |
1560 | char vde_sock[1024], vde_group[512]; | |
1561 | int vde_port, vde_mode; | |
1562 | vlan->nb_host_devs++; | |
1563 | if (get_param_value(vde_sock, sizeof(vde_sock), "sock", p) <= 0) { | |
1564 | vde_sock[0] = '\0'; | |
1565 | } | |
1566 | if (get_param_value(buf, sizeof(buf), "port", p) > 0) { | |
1567 | vde_port = strtol(buf, NULL, 10); | |
1568 | } else { | |
1569 | vde_port = 0; | |
1570 | } | |
1571 | if (get_param_value(vde_group, sizeof(vde_group), "group", p) <= 0) { | |
1572 | vde_group[0] = '\0'; | |
1573 | } | |
1574 | if (get_param_value(buf, sizeof(buf), "mode", p) > 0) { | |
1575 | vde_mode = strtol(buf, NULL, 8); | |
1576 | } else { | |
1577 | vde_mode = 0700; | |
1578 | } | |
bf38c1a0 | 1579 | ret = net_vde_init(vlan, device, vde_sock, vde_port, vde_group, vde_mode); |
63a01ef8 AL |
1580 | } else |
1581 | #endif | |
1582 | { | |
1583 | fprintf(stderr, "Unknown network device: %s\n", device); | |
1584 | return -1; | |
1585 | } | |
1586 | if (ret < 0) { | |
1587 | fprintf(stderr, "Could not initialize device '%s'\n", device); | |
1588 | } | |
1589 | ||
1590 | return ret; | |
1591 | } | |
1592 | ||
1593 | int net_client_parse(const char *str) | |
1594 | { | |
1595 | const char *p; | |
1596 | char *q; | |
1597 | char device[64]; | |
1598 | ||
1599 | p = str; | |
1600 | q = device; | |
1601 | while (*p != '\0' && *p != ',') { | |
1602 | if ((q - device) < sizeof(device) - 1) | |
1603 | *q++ = *p; | |
1604 | p++; | |
1605 | } | |
1606 | *q = '\0'; | |
1607 | if (*p == ',') | |
1608 | p++; | |
1609 | ||
1610 | return net_client_init(device, p); | |
1611 | } | |
1612 | ||
1613 | void do_info_network(void) | |
1614 | { | |
1615 | VLANState *vlan; | |
1616 | VLANClientState *vc; | |
1617 | ||
1618 | for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) { | |
1619 | term_printf("VLAN %d devices:\n", vlan->id); | |
1620 | for(vc = vlan->first_client; vc != NULL; vc = vc->next) | |
1621 | term_printf(" %s\n", vc->info_str); | |
1622 | } | |
1623 | } | |
1624 | ||
1625 | void net_cleanup(void) | |
1626 | { | |
1627 | VLANState *vlan; | |
1628 | ||
1629 | #if !defined(_WIN32) | |
1630 | /* close network clients */ | |
1631 | for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) { | |
1632 | VLANClientState *vc; | |
1633 | ||
1634 | for(vc = vlan->first_client; vc != NULL; vc = vc->next) { | |
1635 | if (vc->fd_read == tap_receive) { | |
1636 | char ifname[64]; | |
1637 | TAPState *s = vc->opaque; | |
1638 | ||
1639 | if (sscanf(vc->info_str, "tap: ifname=%63s ", ifname) == 1 && | |
1640 | s->down_script[0]) | |
1641 | launch_script(s->down_script, ifname, s->fd); | |
1642 | } | |
1643 | #if defined(CONFIG_VDE) | |
1644 | if (vc->fd_read == vde_from_qemu) { | |
1645 | VDEState *s = vc->opaque; | |
1646 | vde_close(s->vde); | |
1647 | } | |
1648 | #endif | |
1649 | } | |
1650 | } | |
1651 | #endif | |
1652 | } | |
1653 | ||
1654 | void net_client_check(void) | |
1655 | { | |
1656 | VLANState *vlan; | |
1657 | ||
1658 | for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) { | |
1659 | if (vlan->nb_guest_devs == 0 && vlan->nb_host_devs == 0) | |
1660 | continue; | |
1661 | if (vlan->nb_guest_devs == 0) | |
1662 | fprintf(stderr, "Warning: vlan %d with no nics\n", vlan->id); | |
1663 | if (vlan->nb_host_devs == 0) | |
1664 | fprintf(stderr, | |
1665 | "Warning: vlan %d is not connected to host network\n", | |
1666 | vlan->id); | |
1667 | } | |
1668 | } |