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68ac40d2 MM |
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 | */ | |
24 | #include "net/slirp.h" | |
25 | ||
26 | #include "config-host.h" | |
27 | ||
28b150bf BS |
28 | #ifndef _WIN32 |
29 | #include <sys/wait.h> | |
30 | #endif | |
68ac40d2 MM |
31 | #include "net.h" |
32 | #include "monitor.h" | |
68ac40d2 MM |
33 | #include "qemu_socket.h" |
34 | #include "slirp/libslirp.h" | |
35 | ||
36 | static int get_str_sep(char *buf, int buf_size, const char **pp, int sep) | |
37 | { | |
38 | const char *p, *p1; | |
39 | int len; | |
40 | p = *pp; | |
41 | p1 = strchr(p, sep); | |
42 | if (!p1) | |
43 | return -1; | |
44 | len = p1 - p; | |
45 | p1++; | |
46 | if (buf_size > 0) { | |
47 | if (len > buf_size - 1) | |
48 | len = buf_size - 1; | |
49 | memcpy(buf, p, len); | |
50 | buf[len] = '\0'; | |
51 | } | |
52 | *pp = p1; | |
53 | return 0; | |
54 | } | |
55 | ||
56 | /* slirp network adapter */ | |
57 | ||
58 | #define SLIRP_CFG_HOSTFWD 1 | |
59 | #define SLIRP_CFG_LEGACY 2 | |
60 | ||
61 | struct slirp_config_str { | |
62 | struct slirp_config_str *next; | |
63 | int flags; | |
64 | char str[1024]; | |
65 | int legacy_format; | |
66 | }; | |
67 | ||
68 | typedef struct SlirpState { | |
ce20b5be | 69 | VLANClientState nc; |
68ac40d2 | 70 | QTAILQ_ENTRY(SlirpState) entry; |
68ac40d2 MM |
71 | Slirp *slirp; |
72 | #ifndef _WIN32 | |
73 | char smb_dir[128]; | |
74 | #endif | |
75 | } SlirpState; | |
76 | ||
77 | static struct slirp_config_str *slirp_configs; | |
78 | const char *legacy_tftp_prefix; | |
79 | const char *legacy_bootp_filename; | |
80 | static QTAILQ_HEAD(slirp_stacks, SlirpState) slirp_stacks = | |
81 | QTAILQ_HEAD_INITIALIZER(slirp_stacks); | |
82 | ||
83 | static int slirp_hostfwd(SlirpState *s, const char *redir_str, | |
84 | int legacy_format); | |
85 | static int slirp_guestfwd(SlirpState *s, const char *config_str, | |
86 | int legacy_format); | |
87 | ||
88 | #ifndef _WIN32 | |
89 | static const char *legacy_smb_export; | |
90 | ||
91 | static int slirp_smb(SlirpState *s, const char *exported_dir, | |
92 | struct in_addr vserver_addr); | |
93 | static void slirp_smb_cleanup(SlirpState *s); | |
94 | #else | |
95 | static inline void slirp_smb_cleanup(SlirpState *s) { } | |
96 | #endif | |
97 | ||
98 | int slirp_can_output(void *opaque) | |
99 | { | |
100 | SlirpState *s = opaque; | |
101 | ||
ce20b5be | 102 | return qemu_can_send_packet(&s->nc); |
68ac40d2 MM |
103 | } |
104 | ||
105 | void slirp_output(void *opaque, const uint8_t *pkt, int pkt_len) | |
106 | { | |
107 | SlirpState *s = opaque; | |
108 | ||
ce20b5be | 109 | qemu_send_packet(&s->nc, pkt, pkt_len); |
68ac40d2 MM |
110 | } |
111 | ||
ce20b5be | 112 | static ssize_t net_slirp_receive(VLANClientState *nc, const uint8_t *buf, size_t size) |
68ac40d2 | 113 | { |
ce20b5be | 114 | SlirpState *s = DO_UPCAST(SlirpState, nc, nc); |
68ac40d2 MM |
115 | |
116 | slirp_input(s->slirp, buf, size); | |
117 | ||
118 | return size; | |
119 | } | |
120 | ||
ce20b5be | 121 | static void net_slirp_cleanup(VLANClientState *nc) |
68ac40d2 | 122 | { |
ce20b5be | 123 | SlirpState *s = DO_UPCAST(SlirpState, nc, nc); |
68ac40d2 MM |
124 | |
125 | slirp_cleanup(s->slirp); | |
126 | slirp_smb_cleanup(s); | |
127 | QTAILQ_REMOVE(&slirp_stacks, s, entry); | |
68ac40d2 MM |
128 | } |
129 | ||
ce20b5be | 130 | static NetClientInfo net_slirp_info = { |
6f7b3b1b | 131 | .type = NET_CLIENT_TYPE_USER, |
ce20b5be MM |
132 | .size = sizeof(SlirpState), |
133 | .receive = net_slirp_receive, | |
134 | .cleanup = net_slirp_cleanup, | |
135 | }; | |
136 | ||
68ac40d2 MM |
137 | static int net_slirp_init(VLANState *vlan, const char *model, |
138 | const char *name, int restricted, | |
139 | const char *vnetwork, const char *vhost, | |
140 | const char *vhostname, const char *tftp_export, | |
141 | const char *bootfile, const char *vdhcp_start, | |
142 | const char *vnameserver, const char *smb_export, | |
143 | const char *vsmbserver) | |
144 | { | |
145 | /* default settings according to historic slirp */ | |
146 | struct in_addr net = { .s_addr = htonl(0x0a000200) }; /* 10.0.2.0 */ | |
147 | struct in_addr mask = { .s_addr = htonl(0xffffff00) }; /* 255.255.255.0 */ | |
148 | struct in_addr host = { .s_addr = htonl(0x0a000202) }; /* 10.0.2.2 */ | |
149 | struct in_addr dhcp = { .s_addr = htonl(0x0a00020f) }; /* 10.0.2.15 */ | |
150 | struct in_addr dns = { .s_addr = htonl(0x0a000203) }; /* 10.0.2.3 */ | |
151 | #ifndef _WIN32 | |
152 | struct in_addr smbsrv = { .s_addr = 0 }; | |
153 | #endif | |
ce20b5be | 154 | VLANClientState *nc; |
68ac40d2 MM |
155 | SlirpState *s; |
156 | char buf[20]; | |
157 | uint32_t addr; | |
158 | int shift; | |
159 | char *end; | |
160 | struct slirp_config_str *config; | |
161 | ||
162 | if (!tftp_export) { | |
163 | tftp_export = legacy_tftp_prefix; | |
164 | } | |
165 | if (!bootfile) { | |
166 | bootfile = legacy_bootp_filename; | |
167 | } | |
168 | ||
169 | if (vnetwork) { | |
170 | if (get_str_sep(buf, sizeof(buf), &vnetwork, '/') < 0) { | |
171 | if (!inet_aton(vnetwork, &net)) { | |
172 | return -1; | |
173 | } | |
174 | addr = ntohl(net.s_addr); | |
175 | if (!(addr & 0x80000000)) { | |
176 | mask.s_addr = htonl(0xff000000); /* class A */ | |
177 | } else if ((addr & 0xfff00000) == 0xac100000) { | |
178 | mask.s_addr = htonl(0xfff00000); /* priv. 172.16.0.0/12 */ | |
179 | } else if ((addr & 0xc0000000) == 0x80000000) { | |
180 | mask.s_addr = htonl(0xffff0000); /* class B */ | |
181 | } else if ((addr & 0xffff0000) == 0xc0a80000) { | |
182 | mask.s_addr = htonl(0xffff0000); /* priv. 192.168.0.0/16 */ | |
183 | } else if ((addr & 0xffff0000) == 0xc6120000) { | |
184 | mask.s_addr = htonl(0xfffe0000); /* tests 198.18.0.0/15 */ | |
185 | } else if ((addr & 0xe0000000) == 0xe0000000) { | |
186 | mask.s_addr = htonl(0xffffff00); /* class C */ | |
187 | } else { | |
188 | mask.s_addr = htonl(0xfffffff0); /* multicast/reserved */ | |
189 | } | |
190 | } else { | |
191 | if (!inet_aton(buf, &net)) { | |
192 | return -1; | |
193 | } | |
194 | shift = strtol(vnetwork, &end, 10); | |
195 | if (*end != '\0') { | |
196 | if (!inet_aton(vnetwork, &mask)) { | |
197 | return -1; | |
198 | } | |
199 | } else if (shift < 4 || shift > 32) { | |
200 | return -1; | |
201 | } else { | |
202 | mask.s_addr = htonl(0xffffffff << (32 - shift)); | |
203 | } | |
204 | } | |
205 | net.s_addr &= mask.s_addr; | |
206 | host.s_addr = net.s_addr | (htonl(0x0202) & ~mask.s_addr); | |
207 | dhcp.s_addr = net.s_addr | (htonl(0x020f) & ~mask.s_addr); | |
208 | dns.s_addr = net.s_addr | (htonl(0x0203) & ~mask.s_addr); | |
209 | } | |
210 | ||
211 | if (vhost && !inet_aton(vhost, &host)) { | |
212 | return -1; | |
213 | } | |
214 | if ((host.s_addr & mask.s_addr) != net.s_addr) { | |
215 | return -1; | |
216 | } | |
217 | ||
218 | if (vdhcp_start && !inet_aton(vdhcp_start, &dhcp)) { | |
219 | return -1; | |
220 | } | |
221 | if ((dhcp.s_addr & mask.s_addr) != net.s_addr || | |
222 | dhcp.s_addr == host.s_addr || dhcp.s_addr == dns.s_addr) { | |
223 | return -1; | |
224 | } | |
225 | ||
226 | if (vnameserver && !inet_aton(vnameserver, &dns)) { | |
227 | return -1; | |
228 | } | |
229 | if ((dns.s_addr & mask.s_addr) != net.s_addr || | |
230 | dns.s_addr == host.s_addr) { | |
231 | return -1; | |
232 | } | |
233 | ||
234 | #ifndef _WIN32 | |
235 | if (vsmbserver && !inet_aton(vsmbserver, &smbsrv)) { | |
236 | return -1; | |
237 | } | |
238 | #endif | |
239 | ||
ce20b5be MM |
240 | nc = qemu_new_net_client(&net_slirp_info, vlan, NULL, model, name); |
241 | ||
242 | snprintf(nc->info_str, sizeof(nc->info_str), | |
c54ed5bc JK |
243 | "net=%s,restrict=%s", inet_ntoa(net), |
244 | restricted ? "on" : "off"); | |
ce20b5be MM |
245 | |
246 | s = DO_UPCAST(SlirpState, nc, nc); | |
247 | ||
68ac40d2 MM |
248 | s->slirp = slirp_init(restricted, net, mask, host, vhostname, |
249 | tftp_export, bootfile, dhcp, dns, s); | |
250 | QTAILQ_INSERT_TAIL(&slirp_stacks, s, entry); | |
251 | ||
252 | for (config = slirp_configs; config; config = config->next) { | |
253 | if (config->flags & SLIRP_CFG_HOSTFWD) { | |
254 | if (slirp_hostfwd(s, config->str, | |
255 | config->flags & SLIRP_CFG_LEGACY) < 0) | |
ce20b5be | 256 | goto error; |
68ac40d2 MM |
257 | } else { |
258 | if (slirp_guestfwd(s, config->str, | |
259 | config->flags & SLIRP_CFG_LEGACY) < 0) | |
ce20b5be | 260 | goto error; |
68ac40d2 MM |
261 | } |
262 | } | |
263 | #ifndef _WIN32 | |
264 | if (!smb_export) { | |
265 | smb_export = legacy_smb_export; | |
266 | } | |
267 | if (smb_export) { | |
268 | if (slirp_smb(s, smb_export, smbsrv) < 0) | |
ce20b5be | 269 | goto error; |
68ac40d2 MM |
270 | } |
271 | #endif | |
272 | ||
68ac40d2 | 273 | return 0; |
ce20b5be MM |
274 | |
275 | error: | |
276 | qemu_del_vlan_client(nc); | |
277 | return -1; | |
68ac40d2 MM |
278 | } |
279 | ||
280 | static SlirpState *slirp_lookup(Monitor *mon, const char *vlan, | |
281 | const char *stack) | |
282 | { | |
68ac40d2 MM |
283 | |
284 | if (vlan) { | |
ce20b5be MM |
285 | VLANClientState *nc; |
286 | nc = qemu_find_vlan_client_by_name(mon, strtol(vlan, NULL, 0), stack); | |
287 | if (!nc) { | |
68ac40d2 MM |
288 | return NULL; |
289 | } | |
ce20b5be | 290 | if (strcmp(nc->model, "user")) { |
68ac40d2 MM |
291 | monitor_printf(mon, "invalid device specified\n"); |
292 | return NULL; | |
293 | } | |
ce20b5be | 294 | return DO_UPCAST(SlirpState, nc, nc); |
68ac40d2 MM |
295 | } else { |
296 | if (QTAILQ_EMPTY(&slirp_stacks)) { | |
297 | monitor_printf(mon, "user mode network stack not in use\n"); | |
298 | return NULL; | |
299 | } | |
300 | return QTAILQ_FIRST(&slirp_stacks); | |
301 | } | |
302 | } | |
303 | ||
304 | void net_slirp_hostfwd_remove(Monitor *mon, const QDict *qdict) | |
305 | { | |
306 | struct in_addr host_addr = { .s_addr = INADDR_ANY }; | |
307 | int host_port; | |
e30e5eb6 | 308 | char buf[256]; |
68ac40d2 MM |
309 | const char *src_str, *p; |
310 | SlirpState *s; | |
311 | int is_udp = 0; | |
312 | int err; | |
313 | const char *arg1 = qdict_get_str(qdict, "arg1"); | |
314 | const char *arg2 = qdict_get_try_str(qdict, "arg2"); | |
315 | const char *arg3 = qdict_get_try_str(qdict, "arg3"); | |
316 | ||
317 | if (arg2) { | |
318 | s = slirp_lookup(mon, arg1, arg2); | |
319 | src_str = arg3; | |
320 | } else { | |
321 | s = slirp_lookup(mon, NULL, NULL); | |
322 | src_str = arg1; | |
323 | } | |
324 | if (!s) { | |
325 | return; | |
326 | } | |
327 | ||
68ac40d2 | 328 | p = src_str; |
e30e5eb6 MA |
329 | if (!p || get_str_sep(buf, sizeof(buf), &p, ':') < 0) { |
330 | goto fail_syntax; | |
331 | } | |
68ac40d2 MM |
332 | |
333 | if (!strcmp(buf, "tcp") || buf[0] == '\0') { | |
334 | is_udp = 0; | |
335 | } else if (!strcmp(buf, "udp")) { | |
336 | is_udp = 1; | |
337 | } else { | |
338 | goto fail_syntax; | |
339 | } | |
340 | ||
341 | if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) { | |
342 | goto fail_syntax; | |
343 | } | |
344 | if (buf[0] != '\0' && !inet_aton(buf, &host_addr)) { | |
345 | goto fail_syntax; | |
346 | } | |
347 | ||
348 | host_port = atoi(p); | |
349 | ||
350 | err = slirp_remove_hostfwd(QTAILQ_FIRST(&slirp_stacks)->slirp, is_udp, | |
351 | host_addr, host_port); | |
352 | ||
353 | monitor_printf(mon, "host forwarding rule for %s %s\n", src_str, | |
b15ba6c9 | 354 | err ? "not found" : "removed"); |
68ac40d2 MM |
355 | return; |
356 | ||
357 | fail_syntax: | |
358 | monitor_printf(mon, "invalid format\n"); | |
359 | } | |
360 | ||
361 | static int slirp_hostfwd(SlirpState *s, const char *redir_str, | |
362 | int legacy_format) | |
363 | { | |
364 | struct in_addr host_addr = { .s_addr = INADDR_ANY }; | |
365 | struct in_addr guest_addr = { .s_addr = 0 }; | |
366 | int host_port, guest_port; | |
367 | const char *p; | |
368 | char buf[256]; | |
369 | int is_udp; | |
370 | char *end; | |
371 | ||
372 | p = redir_str; | |
373 | if (!p || get_str_sep(buf, sizeof(buf), &p, ':') < 0) { | |
374 | goto fail_syntax; | |
375 | } | |
376 | if (!strcmp(buf, "tcp") || buf[0] == '\0') { | |
377 | is_udp = 0; | |
378 | } else if (!strcmp(buf, "udp")) { | |
379 | is_udp = 1; | |
380 | } else { | |
381 | goto fail_syntax; | |
382 | } | |
383 | ||
384 | if (!legacy_format) { | |
385 | if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) { | |
386 | goto fail_syntax; | |
387 | } | |
388 | if (buf[0] != '\0' && !inet_aton(buf, &host_addr)) { | |
389 | goto fail_syntax; | |
390 | } | |
391 | } | |
392 | ||
393 | if (get_str_sep(buf, sizeof(buf), &p, legacy_format ? ':' : '-') < 0) { | |
394 | goto fail_syntax; | |
395 | } | |
396 | host_port = strtol(buf, &end, 0); | |
397 | if (*end != '\0' || host_port < 1 || host_port > 65535) { | |
398 | goto fail_syntax; | |
399 | } | |
400 | ||
401 | if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) { | |
402 | goto fail_syntax; | |
403 | } | |
404 | if (buf[0] != '\0' && !inet_aton(buf, &guest_addr)) { | |
405 | goto fail_syntax; | |
406 | } | |
407 | ||
408 | guest_port = strtol(p, &end, 0); | |
409 | if (*end != '\0' || guest_port < 1 || guest_port > 65535) { | |
410 | goto fail_syntax; | |
411 | } | |
412 | ||
413 | if (slirp_add_hostfwd(s->slirp, is_udp, host_addr, host_port, guest_addr, | |
414 | guest_port) < 0) { | |
1ecda02b MA |
415 | error_report("could not set up host forwarding rule '%s'", |
416 | redir_str); | |
68ac40d2 MM |
417 | return -1; |
418 | } | |
419 | return 0; | |
420 | ||
421 | fail_syntax: | |
1ecda02b | 422 | error_report("invalid host forwarding rule '%s'", redir_str); |
68ac40d2 MM |
423 | return -1; |
424 | } | |
425 | ||
426 | void net_slirp_hostfwd_add(Monitor *mon, const QDict *qdict) | |
427 | { | |
428 | const char *redir_str; | |
429 | SlirpState *s; | |
430 | const char *arg1 = qdict_get_str(qdict, "arg1"); | |
431 | const char *arg2 = qdict_get_try_str(qdict, "arg2"); | |
432 | const char *arg3 = qdict_get_try_str(qdict, "arg3"); | |
433 | ||
434 | if (arg2) { | |
435 | s = slirp_lookup(mon, arg1, arg2); | |
436 | redir_str = arg3; | |
437 | } else { | |
438 | s = slirp_lookup(mon, NULL, NULL); | |
439 | redir_str = arg1; | |
440 | } | |
441 | if (s) { | |
442 | slirp_hostfwd(s, redir_str, 0); | |
443 | } | |
444 | ||
445 | } | |
446 | ||
447 | int net_slirp_redir(const char *redir_str) | |
448 | { | |
449 | struct slirp_config_str *config; | |
450 | ||
451 | if (QTAILQ_EMPTY(&slirp_stacks)) { | |
7267c094 | 452 | config = g_malloc(sizeof(*config)); |
68ac40d2 MM |
453 | pstrcpy(config->str, sizeof(config->str), redir_str); |
454 | config->flags = SLIRP_CFG_HOSTFWD | SLIRP_CFG_LEGACY; | |
455 | config->next = slirp_configs; | |
456 | slirp_configs = config; | |
457 | return 0; | |
458 | } | |
459 | ||
460 | return slirp_hostfwd(QTAILQ_FIRST(&slirp_stacks), redir_str, 1); | |
461 | } | |
462 | ||
463 | #ifndef _WIN32 | |
464 | ||
465 | /* automatic user mode samba server configuration */ | |
466 | static void slirp_smb_cleanup(SlirpState *s) | |
467 | { | |
468 | char cmd[128]; | |
5a01e99f | 469 | int ret; |
68ac40d2 MM |
470 | |
471 | if (s->smb_dir[0] != '\0') { | |
472 | snprintf(cmd, sizeof(cmd), "rm -rf %s", s->smb_dir); | |
5a01e99f | 473 | ret = system(cmd); |
24ac07de | 474 | if (ret == -1 || !WIFEXITED(ret)) { |
1ecda02b | 475 | error_report("'%s' failed.", cmd); |
5a01e99f | 476 | } else if (WEXITSTATUS(ret)) { |
1ecda02b MA |
477 | error_report("'%s' failed. Error code: %d", |
478 | cmd, WEXITSTATUS(ret)); | |
5a01e99f | 479 | } |
68ac40d2 MM |
480 | s->smb_dir[0] = '\0'; |
481 | } | |
482 | } | |
483 | ||
484 | static int slirp_smb(SlirpState* s, const char *exported_dir, | |
485 | struct in_addr vserver_addr) | |
486 | { | |
487 | static int instance; | |
488 | char smb_conf[128]; | |
489 | char smb_cmdline[128]; | |
490 | FILE *f; | |
491 | ||
492 | snprintf(s->smb_dir, sizeof(s->smb_dir), "/tmp/qemu-smb.%ld-%d", | |
493 | (long)getpid(), instance++); | |
494 | if (mkdir(s->smb_dir, 0700) < 0) { | |
1ecda02b | 495 | error_report("could not create samba server dir '%s'", s->smb_dir); |
68ac40d2 MM |
496 | return -1; |
497 | } | |
498 | snprintf(smb_conf, sizeof(smb_conf), "%s/%s", s->smb_dir, "smb.conf"); | |
499 | ||
500 | f = fopen(smb_conf, "w"); | |
501 | if (!f) { | |
502 | slirp_smb_cleanup(s); | |
1ecda02b MA |
503 | error_report("could not create samba server configuration file '%s'", |
504 | smb_conf); | |
68ac40d2 MM |
505 | return -1; |
506 | } | |
507 | fprintf(f, | |
508 | "[global]\n" | |
509 | "private dir=%s\n" | |
68ac40d2 MM |
510 | "socket address=127.0.0.1\n" |
511 | "pid directory=%s\n" | |
512 | "lock directory=%s\n" | |
276eda57 | 513 | "state directory=%s\n" |
68ac40d2 MM |
514 | "log file=%s/log.smbd\n" |
515 | "smb passwd file=%s/smbpasswd\n" | |
516 | "security = share\n" | |
517 | "[qemu]\n" | |
518 | "path=%s\n" | |
519 | "read only=no\n" | |
520 | "guest ok=yes\n", | |
521 | s->smb_dir, | |
522 | s->smb_dir, | |
523 | s->smb_dir, | |
524 | s->smb_dir, | |
525 | s->smb_dir, | |
276eda57 | 526 | s->smb_dir, |
68ac40d2 MM |
527 | exported_dir |
528 | ); | |
529 | fclose(f); | |
530 | ||
531 | snprintf(smb_cmdline, sizeof(smb_cmdline), "%s -s %s", | |
e2d8830e | 532 | CONFIG_SMBD_COMMAND, smb_conf); |
68ac40d2 MM |
533 | |
534 | if (slirp_add_exec(s->slirp, 0, smb_cmdline, &vserver_addr, 139) < 0) { | |
535 | slirp_smb_cleanup(s); | |
1ecda02b | 536 | error_report("conflicting/invalid smbserver address"); |
68ac40d2 MM |
537 | return -1; |
538 | } | |
539 | return 0; | |
540 | } | |
541 | ||
542 | /* automatic user mode samba server configuration (legacy interface) */ | |
543 | int net_slirp_smb(const char *exported_dir) | |
544 | { | |
545 | struct in_addr vserver_addr = { .s_addr = 0 }; | |
546 | ||
547 | if (legacy_smb_export) { | |
548 | fprintf(stderr, "-smb given twice\n"); | |
549 | return -1; | |
550 | } | |
551 | legacy_smb_export = exported_dir; | |
552 | if (!QTAILQ_EMPTY(&slirp_stacks)) { | |
553 | return slirp_smb(QTAILQ_FIRST(&slirp_stacks), exported_dir, | |
554 | vserver_addr); | |
555 | } | |
556 | return 0; | |
557 | } | |
558 | ||
559 | #endif /* !defined(_WIN32) */ | |
560 | ||
561 | struct GuestFwd { | |
562 | CharDriverState *hd; | |
563 | struct in_addr server; | |
564 | int port; | |
565 | Slirp *slirp; | |
566 | }; | |
567 | ||
568 | static int guestfwd_can_read(void *opaque) | |
569 | { | |
570 | struct GuestFwd *fwd = opaque; | |
571 | return slirp_socket_can_recv(fwd->slirp, fwd->server, fwd->port); | |
572 | } | |
573 | ||
574 | static void guestfwd_read(void *opaque, const uint8_t *buf, int size) | |
575 | { | |
576 | struct GuestFwd *fwd = opaque; | |
577 | slirp_socket_recv(fwd->slirp, fwd->server, fwd->port, buf, size); | |
578 | } | |
579 | ||
580 | static int slirp_guestfwd(SlirpState *s, const char *config_str, | |
581 | int legacy_format) | |
582 | { | |
583 | struct in_addr server = { .s_addr = 0 }; | |
584 | struct GuestFwd *fwd; | |
585 | const char *p; | |
586 | char buf[128]; | |
587 | char *end; | |
588 | int port; | |
589 | ||
590 | p = config_str; | |
591 | if (legacy_format) { | |
592 | if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) { | |
593 | goto fail_syntax; | |
594 | } | |
595 | } else { | |
596 | if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) { | |
597 | goto fail_syntax; | |
598 | } | |
599 | if (strcmp(buf, "tcp") && buf[0] != '\0') { | |
600 | goto fail_syntax; | |
601 | } | |
602 | if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) { | |
603 | goto fail_syntax; | |
604 | } | |
605 | if (buf[0] != '\0' && !inet_aton(buf, &server)) { | |
606 | goto fail_syntax; | |
607 | } | |
608 | if (get_str_sep(buf, sizeof(buf), &p, '-') < 0) { | |
609 | goto fail_syntax; | |
610 | } | |
611 | } | |
612 | port = strtol(buf, &end, 10); | |
613 | if (*end != '\0' || port < 1 || port > 65535) { | |
614 | goto fail_syntax; | |
615 | } | |
616 | ||
7267c094 | 617 | fwd = g_malloc(sizeof(struct GuestFwd)); |
a9899996 | 618 | snprintf(buf, sizeof(buf), "guestfwd.tcp.%d", port); |
27143a44 | 619 | fwd->hd = qemu_chr_new(buf, p, NULL); |
68ac40d2 | 620 | if (!fwd->hd) { |
1ecda02b | 621 | error_report("could not open guest forwarding device '%s'", buf); |
7267c094 | 622 | g_free(fwd); |
68ac40d2 MM |
623 | return -1; |
624 | } | |
625 | ||
626 | if (slirp_add_exec(s->slirp, 3, fwd->hd, &server, port) < 0) { | |
1ecda02b MA |
627 | error_report("conflicting/invalid host:port in guest forwarding " |
628 | "rule '%s'", config_str); | |
7267c094 | 629 | g_free(fwd); |
68ac40d2 MM |
630 | return -1; |
631 | } | |
632 | fwd->server = server; | |
633 | fwd->port = port; | |
634 | fwd->slirp = s->slirp; | |
635 | ||
636 | qemu_chr_add_handlers(fwd->hd, guestfwd_can_read, guestfwd_read, | |
637 | NULL, fwd); | |
638 | return 0; | |
639 | ||
640 | fail_syntax: | |
1ecda02b | 641 | error_report("invalid guest forwarding rule '%s'", config_str); |
68ac40d2 MM |
642 | return -1; |
643 | } | |
644 | ||
645 | void do_info_usernet(Monitor *mon) | |
646 | { | |
647 | SlirpState *s; | |
648 | ||
649 | QTAILQ_FOREACH(s, &slirp_stacks, entry) { | |
ce20b5be MM |
650 | monitor_printf(mon, "VLAN %d (%s):\n", |
651 | s->nc.vlan ? s->nc.vlan->id : -1, | |
652 | s->nc.name); | |
68ac40d2 MM |
653 | slirp_connection_info(s->slirp, mon); |
654 | } | |
655 | } | |
656 | ||
657 | static int net_init_slirp_configs(const char *name, const char *value, void *opaque) | |
658 | { | |
659 | struct slirp_config_str *config; | |
660 | ||
661 | if (strcmp(name, "hostfwd") != 0 && strcmp(name, "guestfwd") != 0) { | |
662 | return 0; | |
663 | } | |
664 | ||
7267c094 | 665 | config = g_malloc0(sizeof(*config)); |
68ac40d2 MM |
666 | |
667 | pstrcpy(config->str, sizeof(config->str), value); | |
668 | ||
669 | if (!strcmp(name, "hostfwd")) { | |
670 | config->flags = SLIRP_CFG_HOSTFWD; | |
671 | } | |
672 | ||
673 | config->next = slirp_configs; | |
674 | slirp_configs = config; | |
675 | ||
676 | return 0; | |
677 | } | |
678 | ||
42dcc547 | 679 | int net_init_slirp(QemuOpts *opts, const char *name, VLANState *vlan) |
68ac40d2 MM |
680 | { |
681 | struct slirp_config_str *config; | |
682 | const char *vhost; | |
683 | const char *vhostname; | |
684 | const char *vdhcp_start; | |
685 | const char *vnamesrv; | |
686 | const char *tftp_export; | |
687 | const char *bootfile; | |
688 | const char *smb_export; | |
689 | const char *vsmbsrv; | |
c54ed5bc | 690 | const char *restrict_opt; |
68ac40d2 MM |
691 | char *vnet = NULL; |
692 | int restricted = 0; | |
693 | int ret; | |
694 | ||
695 | vhost = qemu_opt_get(opts, "host"); | |
696 | vhostname = qemu_opt_get(opts, "hostname"); | |
697 | vdhcp_start = qemu_opt_get(opts, "dhcpstart"); | |
698 | vnamesrv = qemu_opt_get(opts, "dns"); | |
699 | tftp_export = qemu_opt_get(opts, "tftp"); | |
700 | bootfile = qemu_opt_get(opts, "bootfile"); | |
701 | smb_export = qemu_opt_get(opts, "smb"); | |
702 | vsmbsrv = qemu_opt_get(opts, "smbserver"); | |
703 | ||
c54ed5bc JK |
704 | restrict_opt = qemu_opt_get(opts, "restrict"); |
705 | if (restrict_opt) { | |
706 | if (!strcmp(restrict_opt, "on") || | |
707 | !strcmp(restrict_opt, "yes") || !strcmp(restrict_opt, "y")) { | |
708 | restricted = 1; | |
709 | } else if (strcmp(restrict_opt, "off") && | |
710 | strcmp(restrict_opt, "no") && strcmp(restrict_opt, "n")) { | |
711 | error_report("invalid option: 'restrict=%s'", restrict_opt); | |
712 | return -1; | |
713 | } | |
714 | } | |
715 | ||
68ac40d2 MM |
716 | if (qemu_opt_get(opts, "ip")) { |
717 | const char *ip = qemu_opt_get(opts, "ip"); | |
718 | int l = strlen(ip) + strlen("/24") + 1; | |
719 | ||
7267c094 | 720 | vnet = g_malloc(l); |
68ac40d2 MM |
721 | |
722 | /* emulate legacy ip= parameter */ | |
723 | pstrcpy(vnet, l, ip); | |
724 | pstrcat(vnet, l, "/24"); | |
725 | } | |
726 | ||
727 | if (qemu_opt_get(opts, "net")) { | |
728 | if (vnet) { | |
7267c094 | 729 | g_free(vnet); |
68ac40d2 | 730 | } |
7267c094 | 731 | vnet = g_strdup(qemu_opt_get(opts, "net")); |
68ac40d2 MM |
732 | } |
733 | ||
68ac40d2 MM |
734 | qemu_opt_foreach(opts, net_init_slirp_configs, NULL, 0); |
735 | ||
736 | ret = net_slirp_init(vlan, "user", name, restricted, vnet, vhost, | |
737 | vhostname, tftp_export, bootfile, vdhcp_start, | |
738 | vnamesrv, smb_export, vsmbsrv); | |
739 | ||
740 | while (slirp_configs) { | |
741 | config = slirp_configs; | |
742 | slirp_configs = config->next; | |
7267c094 | 743 | g_free(config); |
68ac40d2 MM |
744 | } |
745 | ||
7267c094 | 746 | g_free(vnet); |
68ac40d2 MM |
747 | |
748 | return ret; | |
749 | } | |
750 | ||
751 | int net_slirp_parse_legacy(QemuOptsList *opts_list, const char *optarg, int *ret) | |
752 | { | |
753 | if (strcmp(opts_list->name, "net") != 0 || | |
754 | strncmp(optarg, "channel,", strlen("channel,")) != 0) { | |
755 | return 0; | |
756 | } | |
757 | ||
758 | /* handle legacy -net channel,port:chr */ | |
759 | optarg += strlen("channel,"); | |
760 | ||
761 | if (QTAILQ_EMPTY(&slirp_stacks)) { | |
762 | struct slirp_config_str *config; | |
763 | ||
7267c094 | 764 | config = g_malloc(sizeof(*config)); |
68ac40d2 MM |
765 | pstrcpy(config->str, sizeof(config->str), optarg); |
766 | config->flags = SLIRP_CFG_LEGACY; | |
767 | config->next = slirp_configs; | |
768 | slirp_configs = config; | |
769 | *ret = 0; | |
770 | } else { | |
771 | *ret = slirp_guestfwd(QTAILQ_FIRST(&slirp_stacks), optarg, 1); | |
772 | } | |
773 | ||
774 | return 1; | |
775 | } | |
776 |