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Commit | Line | Data |
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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 | */ | |
2744d920 | 24 | #include "qemu/osdep.h" |
68ac40d2 MM |
25 | #include "net/slirp.h" |
26 | ||
68ac40d2 | 27 | |
28b150bf | 28 | #ifndef _WIN32 |
1cb1c5d1 | 29 | #include <pwd.h> |
28b150bf BS |
30 | #include <sys/wait.h> |
31 | #endif | |
1422e32d | 32 | #include "net/net.h" |
a245fc18 PB |
33 | #include "clients.h" |
34 | #include "hub.h" | |
83c9089e | 35 | #include "monitor/monitor.h" |
d49b6836 | 36 | #include "qemu/error-report.h" |
1de7afc9 | 37 | #include "qemu/sockets.h" |
68ac40d2 | 38 | #include "slirp/libslirp.h" |
7aac531e | 39 | #include "slirp/ip6.h" |
dccfcd0e | 40 | #include "sysemu/char.h" |
f6c2e66a | 41 | #include "sysemu/sysemu.h" |
f348b6d1 | 42 | #include "qemu/cutils.h" |
68ac40d2 MM |
43 | |
44 | static int get_str_sep(char *buf, int buf_size, const char **pp, int sep) | |
45 | { | |
46 | const char *p, *p1; | |
47 | int len; | |
48 | p = *pp; | |
49 | p1 = strchr(p, sep); | |
50 | if (!p1) | |
51 | return -1; | |
52 | len = p1 - p; | |
53 | p1++; | |
54 | if (buf_size > 0) { | |
55 | if (len > buf_size - 1) | |
56 | len = buf_size - 1; | |
57 | memcpy(buf, p, len); | |
58 | buf[len] = '\0'; | |
59 | } | |
60 | *pp = p1; | |
61 | return 0; | |
62 | } | |
63 | ||
64 | /* slirp network adapter */ | |
65 | ||
66 | #define SLIRP_CFG_HOSTFWD 1 | |
67 | #define SLIRP_CFG_LEGACY 2 | |
68 | ||
69 | struct slirp_config_str { | |
70 | struct slirp_config_str *next; | |
71 | int flags; | |
72 | char str[1024]; | |
73 | int legacy_format; | |
74 | }; | |
75 | ||
76 | typedef struct SlirpState { | |
4e68f7a0 | 77 | NetClientState nc; |
68ac40d2 | 78 | QTAILQ_ENTRY(SlirpState) entry; |
68ac40d2 | 79 | Slirp *slirp; |
f6c2e66a | 80 | Notifier exit_notifier; |
68ac40d2 MM |
81 | #ifndef _WIN32 |
82 | char smb_dir[128]; | |
83 | #endif | |
84 | } SlirpState; | |
85 | ||
86 | static struct slirp_config_str *slirp_configs; | |
87 | const char *legacy_tftp_prefix; | |
88 | const char *legacy_bootp_filename; | |
89 | static QTAILQ_HEAD(slirp_stacks, SlirpState) slirp_stacks = | |
90 | QTAILQ_HEAD_INITIALIZER(slirp_stacks); | |
91 | ||
92 | static int slirp_hostfwd(SlirpState *s, const char *redir_str, | |
93 | int legacy_format); | |
94 | static int slirp_guestfwd(SlirpState *s, const char *config_str, | |
95 | int legacy_format); | |
96 | ||
97 | #ifndef _WIN32 | |
98 | static const char *legacy_smb_export; | |
99 | ||
100 | static int slirp_smb(SlirpState *s, const char *exported_dir, | |
101 | struct in_addr vserver_addr); | |
102 | static void slirp_smb_cleanup(SlirpState *s); | |
103 | #else | |
104 | static inline void slirp_smb_cleanup(SlirpState *s) { } | |
105 | #endif | |
106 | ||
68ac40d2 MM |
107 | void slirp_output(void *opaque, const uint8_t *pkt, int pkt_len) |
108 | { | |
109 | SlirpState *s = opaque; | |
110 | ||
ce20b5be | 111 | qemu_send_packet(&s->nc, pkt, pkt_len); |
68ac40d2 MM |
112 | } |
113 | ||
4e68f7a0 | 114 | static ssize_t net_slirp_receive(NetClientState *nc, const uint8_t *buf, size_t size) |
68ac40d2 | 115 | { |
ce20b5be | 116 | SlirpState *s = DO_UPCAST(SlirpState, nc, nc); |
68ac40d2 MM |
117 | |
118 | slirp_input(s->slirp, buf, size); | |
119 | ||
120 | return size; | |
121 | } | |
122 | ||
f6c2e66a PB |
123 | static void slirp_smb_exit(Notifier *n, void *data) |
124 | { | |
125 | SlirpState *s = container_of(n, SlirpState, exit_notifier); | |
126 | slirp_smb_cleanup(s); | |
127 | } | |
128 | ||
4e68f7a0 | 129 | static void net_slirp_cleanup(NetClientState *nc) |
68ac40d2 | 130 | { |
ce20b5be | 131 | SlirpState *s = DO_UPCAST(SlirpState, nc, nc); |
68ac40d2 MM |
132 | |
133 | slirp_cleanup(s->slirp); | |
67f3280c MAL |
134 | if (s->exit_notifier.notify) { |
135 | qemu_remove_exit_notifier(&s->exit_notifier); | |
136 | } | |
68ac40d2 MM |
137 | slirp_smb_cleanup(s); |
138 | QTAILQ_REMOVE(&slirp_stacks, s, entry); | |
68ac40d2 MM |
139 | } |
140 | ||
ce20b5be | 141 | static NetClientInfo net_slirp_info = { |
f394b2e2 | 142 | .type = NET_CLIENT_DRIVER_USER, |
ce20b5be MM |
143 | .size = sizeof(SlirpState), |
144 | .receive = net_slirp_receive, | |
145 | .cleanup = net_slirp_cleanup, | |
146 | }; | |
147 | ||
4e68f7a0 | 148 | static int net_slirp_init(NetClientState *peer, const char *model, |
68ac40d2 | 149 | const char *name, int restricted, |
0b11c036 ST |
150 | bool ipv4, const char *vnetwork, const char *vhost, |
151 | bool ipv6, const char *vprefix6, int vprefix6_len, | |
7aac531e | 152 | const char *vhost6, |
68ac40d2 MM |
153 | const char *vhostname, const char *tftp_export, |
154 | const char *bootfile, const char *vdhcp_start, | |
7aac531e YB |
155 | const char *vnameserver, const char *vnameserver6, |
156 | const char *smb_export, const char *vsmbserver, | |
157 | const char **dnssearch) | |
68ac40d2 MM |
158 | { |
159 | /* default settings according to historic slirp */ | |
160 | struct in_addr net = { .s_addr = htonl(0x0a000200) }; /* 10.0.2.0 */ | |
161 | struct in_addr mask = { .s_addr = htonl(0xffffff00) }; /* 255.255.255.0 */ | |
162 | struct in_addr host = { .s_addr = htonl(0x0a000202) }; /* 10.0.2.2 */ | |
163 | struct in_addr dhcp = { .s_addr = htonl(0x0a00020f) }; /* 10.0.2.15 */ | |
164 | struct in_addr dns = { .s_addr = htonl(0x0a000203) }; /* 10.0.2.3 */ | |
7aac531e YB |
165 | struct in6_addr ip6_prefix; |
166 | struct in6_addr ip6_host; | |
167 | struct in6_addr ip6_dns; | |
68ac40d2 MM |
168 | #ifndef _WIN32 |
169 | struct in_addr smbsrv = { .s_addr = 0 }; | |
170 | #endif | |
4e68f7a0 | 171 | NetClientState *nc; |
68ac40d2 MM |
172 | SlirpState *s; |
173 | char buf[20]; | |
174 | uint32_t addr; | |
175 | int shift; | |
176 | char *end; | |
177 | struct slirp_config_str *config; | |
178 | ||
0b11c036 ST |
179 | if (!ipv4 && (vnetwork || vhost || vnameserver)) { |
180 | return -1; | |
181 | } | |
182 | ||
183 | if (!ipv6 && (vprefix6 || vhost6 || vnameserver6)) { | |
184 | return -1; | |
185 | } | |
186 | ||
187 | if (!ipv4 && !ipv6) { | |
188 | /* It doesn't make sense to disable both */ | |
189 | return -1; | |
190 | } | |
191 | ||
68ac40d2 MM |
192 | if (!tftp_export) { |
193 | tftp_export = legacy_tftp_prefix; | |
194 | } | |
195 | if (!bootfile) { | |
196 | bootfile = legacy_bootp_filename; | |
197 | } | |
198 | ||
199 | if (vnetwork) { | |
200 | if (get_str_sep(buf, sizeof(buf), &vnetwork, '/') < 0) { | |
201 | if (!inet_aton(vnetwork, &net)) { | |
202 | return -1; | |
203 | } | |
204 | addr = ntohl(net.s_addr); | |
205 | if (!(addr & 0x80000000)) { | |
206 | mask.s_addr = htonl(0xff000000); /* class A */ | |
207 | } else if ((addr & 0xfff00000) == 0xac100000) { | |
208 | mask.s_addr = htonl(0xfff00000); /* priv. 172.16.0.0/12 */ | |
209 | } else if ((addr & 0xc0000000) == 0x80000000) { | |
210 | mask.s_addr = htonl(0xffff0000); /* class B */ | |
211 | } else if ((addr & 0xffff0000) == 0xc0a80000) { | |
212 | mask.s_addr = htonl(0xffff0000); /* priv. 192.168.0.0/16 */ | |
213 | } else if ((addr & 0xffff0000) == 0xc6120000) { | |
214 | mask.s_addr = htonl(0xfffe0000); /* tests 198.18.0.0/15 */ | |
215 | } else if ((addr & 0xe0000000) == 0xe0000000) { | |
216 | mask.s_addr = htonl(0xffffff00); /* class C */ | |
217 | } else { | |
218 | mask.s_addr = htonl(0xfffffff0); /* multicast/reserved */ | |
219 | } | |
220 | } else { | |
221 | if (!inet_aton(buf, &net)) { | |
222 | return -1; | |
223 | } | |
224 | shift = strtol(vnetwork, &end, 10); | |
225 | if (*end != '\0') { | |
226 | if (!inet_aton(vnetwork, &mask)) { | |
227 | return -1; | |
228 | } | |
229 | } else if (shift < 4 || shift > 32) { | |
230 | return -1; | |
231 | } else { | |
232 | mask.s_addr = htonl(0xffffffff << (32 - shift)); | |
233 | } | |
234 | } | |
235 | net.s_addr &= mask.s_addr; | |
236 | host.s_addr = net.s_addr | (htonl(0x0202) & ~mask.s_addr); | |
237 | dhcp.s_addr = net.s_addr | (htonl(0x020f) & ~mask.s_addr); | |
238 | dns.s_addr = net.s_addr | (htonl(0x0203) & ~mask.s_addr); | |
239 | } | |
240 | ||
241 | if (vhost && !inet_aton(vhost, &host)) { | |
242 | return -1; | |
243 | } | |
244 | if ((host.s_addr & mask.s_addr) != net.s_addr) { | |
245 | return -1; | |
246 | } | |
247 | ||
68756ba8 | 248 | if (vnameserver && !inet_aton(vnameserver, &dns)) { |
68ac40d2 MM |
249 | return -1; |
250 | } | |
68756ba8 BS |
251 | if ((dns.s_addr & mask.s_addr) != net.s_addr || |
252 | dns.s_addr == host.s_addr) { | |
68ac40d2 MM |
253 | return -1; |
254 | } | |
255 | ||
68756ba8 | 256 | if (vdhcp_start && !inet_aton(vdhcp_start, &dhcp)) { |
68ac40d2 MM |
257 | return -1; |
258 | } | |
68756ba8 BS |
259 | if ((dhcp.s_addr & mask.s_addr) != net.s_addr || |
260 | dhcp.s_addr == host.s_addr || dhcp.s_addr == dns.s_addr) { | |
68ac40d2 MM |
261 | return -1; |
262 | } | |
263 | ||
264 | #ifndef _WIN32 | |
265 | if (vsmbserver && !inet_aton(vsmbserver, &smbsrv)) { | |
266 | return -1; | |
267 | } | |
268 | #endif | |
269 | ||
7aac531e YB |
270 | #if defined(_WIN32) && (_WIN32_WINNT < 0x0600) |
271 | /* No inet_pton helper before Vista... */ | |
272 | if (vprefix6) { | |
273 | /* Unsupported */ | |
274 | return -1; | |
275 | } | |
276 | memset(&ip6_prefix, 0, sizeof(ip6_prefix)); | |
277 | ip6_prefix.s6_addr[0] = 0xfe; | |
278 | ip6_prefix.s6_addr[1] = 0xc0; | |
279 | #else | |
280 | if (!vprefix6) { | |
281 | vprefix6 = "fec0::"; | |
282 | } | |
283 | if (!inet_pton(AF_INET6, vprefix6, &ip6_prefix)) { | |
284 | return -1; | |
285 | } | |
286 | #endif | |
287 | ||
288 | if (!vprefix6_len) { | |
289 | vprefix6_len = 64; | |
290 | } | |
291 | if (vprefix6_len < 0 || vprefix6_len > 126) { | |
292 | return -1; | |
293 | } | |
294 | ||
295 | if (vhost6) { | |
296 | #if defined(_WIN32) && (_WIN32_WINNT < 0x0600) | |
297 | return -1; | |
298 | #else | |
299 | if (!inet_pton(AF_INET6, vhost6, &ip6_host)) { | |
300 | return -1; | |
301 | } | |
302 | if (!in6_equal_net(&ip6_prefix, &ip6_host, vprefix6_len)) { | |
303 | return -1; | |
304 | } | |
305 | #endif | |
306 | } else { | |
307 | ip6_host = ip6_prefix; | |
308 | ip6_host.s6_addr[15] |= 2; | |
309 | } | |
310 | ||
311 | if (vnameserver6) { | |
312 | #if defined(_WIN32) && (_WIN32_WINNT < 0x0600) | |
313 | return -1; | |
314 | #else | |
315 | if (!inet_pton(AF_INET6, vnameserver6, &ip6_dns)) { | |
316 | return -1; | |
317 | } | |
318 | if (!in6_equal_net(&ip6_prefix, &ip6_dns, vprefix6_len)) { | |
319 | return -1; | |
320 | } | |
321 | #endif | |
322 | } else { | |
323 | ip6_dns = ip6_prefix; | |
324 | ip6_dns.s6_addr[15] |= 3; | |
325 | } | |
326 | ||
327 | ||
ab5f3f84 | 328 | nc = qemu_new_net_client(&net_slirp_info, peer, model, name); |
ce20b5be MM |
329 | |
330 | snprintf(nc->info_str, sizeof(nc->info_str), | |
c54ed5bc JK |
331 | "net=%s,restrict=%s", inet_ntoa(net), |
332 | restricted ? "on" : "off"); | |
ce20b5be MM |
333 | |
334 | s = DO_UPCAST(SlirpState, nc, nc); | |
335 | ||
0b11c036 ST |
336 | s->slirp = slirp_init(restricted, ipv4, net, mask, host, |
337 | ipv6, ip6_prefix, vprefix6_len, ip6_host, | |
7aac531e YB |
338 | vhostname, tftp_export, bootfile, dhcp, |
339 | dns, ip6_dns, dnssearch, s); | |
68ac40d2 MM |
340 | QTAILQ_INSERT_TAIL(&slirp_stacks, s, entry); |
341 | ||
342 | for (config = slirp_configs; config; config = config->next) { | |
343 | if (config->flags & SLIRP_CFG_HOSTFWD) { | |
344 | if (slirp_hostfwd(s, config->str, | |
345 | config->flags & SLIRP_CFG_LEGACY) < 0) | |
ce20b5be | 346 | goto error; |
68ac40d2 MM |
347 | } else { |
348 | if (slirp_guestfwd(s, config->str, | |
349 | config->flags & SLIRP_CFG_LEGACY) < 0) | |
ce20b5be | 350 | goto error; |
68ac40d2 MM |
351 | } |
352 | } | |
353 | #ifndef _WIN32 | |
354 | if (!smb_export) { | |
355 | smb_export = legacy_smb_export; | |
356 | } | |
357 | if (smb_export) { | |
358 | if (slirp_smb(s, smb_export, smbsrv) < 0) | |
ce20b5be | 359 | goto error; |
68ac40d2 MM |
360 | } |
361 | #endif | |
362 | ||
f6c2e66a PB |
363 | s->exit_notifier.notify = slirp_smb_exit; |
364 | qemu_add_exit_notifier(&s->exit_notifier); | |
68ac40d2 | 365 | return 0; |
ce20b5be MM |
366 | |
367 | error: | |
b20c6b9e | 368 | qemu_del_net_client(nc); |
ce20b5be | 369 | return -1; |
68ac40d2 MM |
370 | } |
371 | ||
372 | static SlirpState *slirp_lookup(Monitor *mon, const char *vlan, | |
373 | const char *stack) | |
374 | { | |
68ac40d2 MM |
375 | |
376 | if (vlan) { | |
4e68f7a0 | 377 | NetClientState *nc; |
90d87a33 | 378 | nc = net_hub_find_client_by_name(strtol(vlan, NULL, 0), stack); |
ce20b5be | 379 | if (!nc) { |
b739ef05 | 380 | monitor_printf(mon, "unrecognized (vlan-id, stackname) pair\n"); |
68ac40d2 MM |
381 | return NULL; |
382 | } | |
ce20b5be | 383 | if (strcmp(nc->model, "user")) { |
68ac40d2 MM |
384 | monitor_printf(mon, "invalid device specified\n"); |
385 | return NULL; | |
386 | } | |
ce20b5be | 387 | return DO_UPCAST(SlirpState, nc, nc); |
68ac40d2 MM |
388 | } else { |
389 | if (QTAILQ_EMPTY(&slirp_stacks)) { | |
390 | monitor_printf(mon, "user mode network stack not in use\n"); | |
391 | return NULL; | |
392 | } | |
393 | return QTAILQ_FIRST(&slirp_stacks); | |
394 | } | |
395 | } | |
396 | ||
3e5a50d6 | 397 | void hmp_hostfwd_remove(Monitor *mon, const QDict *qdict) |
68ac40d2 MM |
398 | { |
399 | struct in_addr host_addr = { .s_addr = INADDR_ANY }; | |
400 | int host_port; | |
e30e5eb6 | 401 | char buf[256]; |
68ac40d2 MM |
402 | const char *src_str, *p; |
403 | SlirpState *s; | |
404 | int is_udp = 0; | |
405 | int err; | |
406 | const char *arg1 = qdict_get_str(qdict, "arg1"); | |
407 | const char *arg2 = qdict_get_try_str(qdict, "arg2"); | |
408 | const char *arg3 = qdict_get_try_str(qdict, "arg3"); | |
409 | ||
410 | if (arg2) { | |
411 | s = slirp_lookup(mon, arg1, arg2); | |
412 | src_str = arg3; | |
413 | } else { | |
414 | s = slirp_lookup(mon, NULL, NULL); | |
415 | src_str = arg1; | |
416 | } | |
417 | if (!s) { | |
418 | return; | |
419 | } | |
420 | ||
68ac40d2 | 421 | p = src_str; |
e30e5eb6 MA |
422 | if (!p || get_str_sep(buf, sizeof(buf), &p, ':') < 0) { |
423 | goto fail_syntax; | |
424 | } | |
68ac40d2 MM |
425 | |
426 | if (!strcmp(buf, "tcp") || buf[0] == '\0') { | |
427 | is_udp = 0; | |
428 | } else if (!strcmp(buf, "udp")) { | |
429 | is_udp = 1; | |
430 | } else { | |
431 | goto fail_syntax; | |
432 | } | |
433 | ||
434 | if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) { | |
435 | goto fail_syntax; | |
436 | } | |
437 | if (buf[0] != '\0' && !inet_aton(buf, &host_addr)) { | |
438 | goto fail_syntax; | |
439 | } | |
440 | ||
441 | host_port = atoi(p); | |
442 | ||
70381662 | 443 | err = slirp_remove_hostfwd(s->slirp, is_udp, host_addr, host_port); |
68ac40d2 MM |
444 | |
445 | monitor_printf(mon, "host forwarding rule for %s %s\n", src_str, | |
b15ba6c9 | 446 | err ? "not found" : "removed"); |
68ac40d2 MM |
447 | return; |
448 | ||
449 | fail_syntax: | |
450 | monitor_printf(mon, "invalid format\n"); | |
451 | } | |
452 | ||
453 | static int slirp_hostfwd(SlirpState *s, const char *redir_str, | |
454 | int legacy_format) | |
455 | { | |
456 | struct in_addr host_addr = { .s_addr = INADDR_ANY }; | |
457 | struct in_addr guest_addr = { .s_addr = 0 }; | |
458 | int host_port, guest_port; | |
459 | const char *p; | |
460 | char buf[256]; | |
461 | int is_udp; | |
462 | char *end; | |
463 | ||
464 | p = redir_str; | |
465 | if (!p || get_str_sep(buf, sizeof(buf), &p, ':') < 0) { | |
466 | goto fail_syntax; | |
467 | } | |
468 | if (!strcmp(buf, "tcp") || buf[0] == '\0') { | |
469 | is_udp = 0; | |
470 | } else if (!strcmp(buf, "udp")) { | |
471 | is_udp = 1; | |
472 | } else { | |
473 | goto fail_syntax; | |
474 | } | |
475 | ||
476 | if (!legacy_format) { | |
477 | if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) { | |
478 | goto fail_syntax; | |
479 | } | |
480 | if (buf[0] != '\0' && !inet_aton(buf, &host_addr)) { | |
481 | goto fail_syntax; | |
482 | } | |
483 | } | |
484 | ||
485 | if (get_str_sep(buf, sizeof(buf), &p, legacy_format ? ':' : '-') < 0) { | |
486 | goto fail_syntax; | |
487 | } | |
488 | host_port = strtol(buf, &end, 0); | |
489 | if (*end != '\0' || host_port < 1 || host_port > 65535) { | |
490 | goto fail_syntax; | |
491 | } | |
492 | ||
493 | if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) { | |
494 | goto fail_syntax; | |
495 | } | |
496 | if (buf[0] != '\0' && !inet_aton(buf, &guest_addr)) { | |
497 | goto fail_syntax; | |
498 | } | |
499 | ||
500 | guest_port = strtol(p, &end, 0); | |
501 | if (*end != '\0' || guest_port < 1 || guest_port > 65535) { | |
502 | goto fail_syntax; | |
503 | } | |
504 | ||
505 | if (slirp_add_hostfwd(s->slirp, is_udp, host_addr, host_port, guest_addr, | |
506 | guest_port) < 0) { | |
1ecda02b MA |
507 | error_report("could not set up host forwarding rule '%s'", |
508 | redir_str); | |
68ac40d2 MM |
509 | return -1; |
510 | } | |
511 | return 0; | |
512 | ||
513 | fail_syntax: | |
1ecda02b | 514 | error_report("invalid host forwarding rule '%s'", redir_str); |
68ac40d2 MM |
515 | return -1; |
516 | } | |
517 | ||
3e5a50d6 | 518 | void hmp_hostfwd_add(Monitor *mon, const QDict *qdict) |
68ac40d2 MM |
519 | { |
520 | const char *redir_str; | |
521 | SlirpState *s; | |
522 | const char *arg1 = qdict_get_str(qdict, "arg1"); | |
523 | const char *arg2 = qdict_get_try_str(qdict, "arg2"); | |
524 | const char *arg3 = qdict_get_try_str(qdict, "arg3"); | |
525 | ||
526 | if (arg2) { | |
527 | s = slirp_lookup(mon, arg1, arg2); | |
528 | redir_str = arg3; | |
529 | } else { | |
530 | s = slirp_lookup(mon, NULL, NULL); | |
531 | redir_str = arg1; | |
532 | } | |
533 | if (s) { | |
534 | slirp_hostfwd(s, redir_str, 0); | |
535 | } | |
536 | ||
537 | } | |
538 | ||
539 | int net_slirp_redir(const char *redir_str) | |
540 | { | |
541 | struct slirp_config_str *config; | |
542 | ||
543 | if (QTAILQ_EMPTY(&slirp_stacks)) { | |
7267c094 | 544 | config = g_malloc(sizeof(*config)); |
68ac40d2 MM |
545 | pstrcpy(config->str, sizeof(config->str), redir_str); |
546 | config->flags = SLIRP_CFG_HOSTFWD | SLIRP_CFG_LEGACY; | |
547 | config->next = slirp_configs; | |
548 | slirp_configs = config; | |
549 | return 0; | |
550 | } | |
551 | ||
552 | return slirp_hostfwd(QTAILQ_FIRST(&slirp_stacks), redir_str, 1); | |
553 | } | |
554 | ||
555 | #ifndef _WIN32 | |
556 | ||
557 | /* automatic user mode samba server configuration */ | |
558 | static void slirp_smb_cleanup(SlirpState *s) | |
559 | { | |
560 | char cmd[128]; | |
5a01e99f | 561 | int ret; |
68ac40d2 MM |
562 | |
563 | if (s->smb_dir[0] != '\0') { | |
564 | snprintf(cmd, sizeof(cmd), "rm -rf %s", s->smb_dir); | |
5a01e99f | 565 | ret = system(cmd); |
24ac07de | 566 | if (ret == -1 || !WIFEXITED(ret)) { |
1ecda02b | 567 | error_report("'%s' failed.", cmd); |
5a01e99f | 568 | } else if (WEXITSTATUS(ret)) { |
1ecda02b MA |
569 | error_report("'%s' failed. Error code: %d", |
570 | cmd, WEXITSTATUS(ret)); | |
5a01e99f | 571 | } |
68ac40d2 MM |
572 | s->smb_dir[0] = '\0'; |
573 | } | |
574 | } | |
575 | ||
576 | static int slirp_smb(SlirpState* s, const char *exported_dir, | |
577 | struct in_addr vserver_addr) | |
578 | { | |
68ac40d2 MM |
579 | char smb_conf[128]; |
580 | char smb_cmdline[128]; | |
1cb1c5d1 | 581 | struct passwd *passwd; |
68ac40d2 MM |
582 | FILE *f; |
583 | ||
1cb1c5d1 JK |
584 | passwd = getpwuid(geteuid()); |
585 | if (!passwd) { | |
586 | error_report("failed to retrieve user name"); | |
587 | return -1; | |
588 | } | |
589 | ||
927d811b DH |
590 | if (access(CONFIG_SMBD_COMMAND, F_OK)) { |
591 | error_report("could not find '%s', please install it", | |
592 | CONFIG_SMBD_COMMAND); | |
593 | return -1; | |
594 | } | |
595 | ||
596 | if (access(exported_dir, R_OK | X_OK)) { | |
22a61f36 JK |
597 | error_report("error accessing shared directory '%s': %s", |
598 | exported_dir, strerror(errno)); | |
927d811b DH |
599 | return -1; |
600 | } | |
601 | ||
8b8f1c7e MT |
602 | snprintf(s->smb_dir, sizeof(s->smb_dir), "/tmp/qemu-smb.XXXXXX"); |
603 | if (!mkdtemp(s->smb_dir)) { | |
1ecda02b | 604 | error_report("could not create samba server dir '%s'", s->smb_dir); |
8b8f1c7e | 605 | s->smb_dir[0] = 0; |
68ac40d2 MM |
606 | return -1; |
607 | } | |
608 | snprintf(smb_conf, sizeof(smb_conf), "%s/%s", s->smb_dir, "smb.conf"); | |
609 | ||
610 | f = fopen(smb_conf, "w"); | |
611 | if (!f) { | |
612 | slirp_smb_cleanup(s); | |
1ecda02b MA |
613 | error_report("could not create samba server configuration file '%s'", |
614 | smb_conf); | |
68ac40d2 MM |
615 | return -1; |
616 | } | |
617 | fprintf(f, | |
618 | "[global]\n" | |
619 | "private dir=%s\n" | |
7912d04b PW |
620 | "interfaces=127.0.0.1\n" |
621 | "bind interfaces only=yes\n" | |
68ac40d2 MM |
622 | "pid directory=%s\n" |
623 | "lock directory=%s\n" | |
276eda57 | 624 | "state directory=%s\n" |
7912d04b | 625 | "cache directory=%s\n" |
b87b8a8b | 626 | "ncalrpc dir=%s/ncalrpc\n" |
68ac40d2 MM |
627 | "log file=%s/log.smbd\n" |
628 | "smb passwd file=%s/smbpasswd\n" | |
c2804ee6 MB |
629 | "security = user\n" |
630 | "map to guest = Bad User\n" | |
7912d04b PW |
631 | "load printers = no\n" |
632 | "printing = bsd\n" | |
633 | "disable spoolss = yes\n" | |
634 | "usershare max shares = 0\n" | |
68ac40d2 MM |
635 | "[qemu]\n" |
636 | "path=%s\n" | |
637 | "read only=no\n" | |
1cb1c5d1 JK |
638 | "guest ok=yes\n" |
639 | "force user=%s\n", | |
68ac40d2 MM |
640 | s->smb_dir, |
641 | s->smb_dir, | |
642 | s->smb_dir, | |
643 | s->smb_dir, | |
644 | s->smb_dir, | |
276eda57 | 645 | s->smb_dir, |
b87b8a8b | 646 | s->smb_dir, |
7912d04b | 647 | s->smb_dir, |
1cb1c5d1 JK |
648 | exported_dir, |
649 | passwd->pw_name | |
68ac40d2 MM |
650 | ); |
651 | fclose(f); | |
652 | ||
44d8d2b2 MT |
653 | snprintf(smb_cmdline, sizeof(smb_cmdline), "%s -l %s -s %s", |
654 | CONFIG_SMBD_COMMAND, s->smb_dir, smb_conf); | |
68ac40d2 | 655 | |
5c1e1890 MT |
656 | if (slirp_add_exec(s->slirp, 0, smb_cmdline, &vserver_addr, 139) < 0 || |
657 | slirp_add_exec(s->slirp, 0, smb_cmdline, &vserver_addr, 445) < 0) { | |
68ac40d2 | 658 | slirp_smb_cleanup(s); |
1ecda02b | 659 | error_report("conflicting/invalid smbserver address"); |
68ac40d2 MM |
660 | return -1; |
661 | } | |
662 | return 0; | |
663 | } | |
664 | ||
665 | /* automatic user mode samba server configuration (legacy interface) */ | |
666 | int net_slirp_smb(const char *exported_dir) | |
667 | { | |
668 | struct in_addr vserver_addr = { .s_addr = 0 }; | |
669 | ||
670 | if (legacy_smb_export) { | |
671 | fprintf(stderr, "-smb given twice\n"); | |
672 | return -1; | |
673 | } | |
674 | legacy_smb_export = exported_dir; | |
675 | if (!QTAILQ_EMPTY(&slirp_stacks)) { | |
676 | return slirp_smb(QTAILQ_FIRST(&slirp_stacks), exported_dir, | |
677 | vserver_addr); | |
678 | } | |
679 | return 0; | |
680 | } | |
681 | ||
682 | #endif /* !defined(_WIN32) */ | |
683 | ||
684 | struct GuestFwd { | |
685 | CharDriverState *hd; | |
686 | struct in_addr server; | |
687 | int port; | |
688 | Slirp *slirp; | |
689 | }; | |
690 | ||
691 | static int guestfwd_can_read(void *opaque) | |
692 | { | |
693 | struct GuestFwd *fwd = opaque; | |
694 | return slirp_socket_can_recv(fwd->slirp, fwd->server, fwd->port); | |
695 | } | |
696 | ||
697 | static void guestfwd_read(void *opaque, const uint8_t *buf, int size) | |
698 | { | |
699 | struct GuestFwd *fwd = opaque; | |
700 | slirp_socket_recv(fwd->slirp, fwd->server, fwd->port, buf, size); | |
701 | } | |
702 | ||
703 | static int slirp_guestfwd(SlirpState *s, const char *config_str, | |
704 | int legacy_format) | |
705 | { | |
706 | struct in_addr server = { .s_addr = 0 }; | |
707 | struct GuestFwd *fwd; | |
708 | const char *p; | |
709 | char buf[128]; | |
710 | char *end; | |
711 | int port; | |
712 | ||
713 | p = config_str; | |
714 | if (legacy_format) { | |
715 | if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) { | |
716 | goto fail_syntax; | |
717 | } | |
718 | } else { | |
719 | if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) { | |
720 | goto fail_syntax; | |
721 | } | |
722 | if (strcmp(buf, "tcp") && buf[0] != '\0') { | |
723 | goto fail_syntax; | |
724 | } | |
725 | if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) { | |
726 | goto fail_syntax; | |
727 | } | |
728 | if (buf[0] != '\0' && !inet_aton(buf, &server)) { | |
729 | goto fail_syntax; | |
730 | } | |
731 | if (get_str_sep(buf, sizeof(buf), &p, '-') < 0) { | |
732 | goto fail_syntax; | |
733 | } | |
734 | } | |
735 | port = strtol(buf, &end, 10); | |
736 | if (*end != '\0' || port < 1 || port > 65535) { | |
737 | goto fail_syntax; | |
738 | } | |
739 | ||
a9899996 | 740 | snprintf(buf, sizeof(buf), "guestfwd.tcp.%d", port); |
68ac40d2 | 741 | |
b412eb61 AG |
742 | if ((strlen(p) > 4) && !strncmp(p, "cmd:", 4)) { |
743 | if (slirp_add_exec(s->slirp, 0, &p[4], &server, port) < 0) { | |
744 | error_report("conflicting/invalid host:port in guest forwarding " | |
745 | "rule '%s'", config_str); | |
b412eb61 AG |
746 | return -1; |
747 | } | |
748 | } else { | |
58889fe5 | 749 | fwd = g_new(struct GuestFwd, 1); |
b412eb61 AG |
750 | fwd->hd = qemu_chr_new(buf, p, NULL); |
751 | if (!fwd->hd) { | |
752 | error_report("could not open guest forwarding device '%s'", buf); | |
753 | g_free(fwd); | |
754 | return -1; | |
755 | } | |
68ac40d2 | 756 | |
b412eb61 AG |
757 | if (slirp_add_exec(s->slirp, 3, fwd->hd, &server, port) < 0) { |
758 | error_report("conflicting/invalid host:port in guest forwarding " | |
759 | "rule '%s'", config_str); | |
760 | g_free(fwd); | |
761 | return -1; | |
762 | } | |
763 | fwd->server = server; | |
764 | fwd->port = port; | |
765 | fwd->slirp = s->slirp; | |
766 | ||
456d6069 | 767 | qemu_chr_fe_claim_no_fail(fwd->hd); |
b412eb61 AG |
768 | qemu_chr_add_handlers(fwd->hd, guestfwd_can_read, guestfwd_read, |
769 | NULL, fwd); | |
770 | } | |
68ac40d2 MM |
771 | return 0; |
772 | ||
773 | fail_syntax: | |
1ecda02b | 774 | error_report("invalid guest forwarding rule '%s'", config_str); |
68ac40d2 MM |
775 | return -1; |
776 | } | |
777 | ||
1ce6be24 | 778 | void hmp_info_usernet(Monitor *mon, const QDict *qdict) |
68ac40d2 MM |
779 | { |
780 | SlirpState *s; | |
781 | ||
782 | QTAILQ_FOREACH(s, &slirp_stacks, entry) { | |
90d87a33 SH |
783 | int id; |
784 | bool got_vlan_id = net_hub_id_for_client(&s->nc, &id) == 0; | |
ce20b5be | 785 | monitor_printf(mon, "VLAN %d (%s):\n", |
90d87a33 | 786 | got_vlan_id ? id : -1, |
ce20b5be | 787 | s->nc.name); |
68ac40d2 MM |
788 | slirp_connection_info(s->slirp, mon); |
789 | } | |
790 | } | |
791 | ||
094f15c5 LE |
792 | static void |
793 | net_init_slirp_configs(const StringList *fwd, int flags) | |
68ac40d2 | 794 | { |
094f15c5 LE |
795 | while (fwd) { |
796 | struct slirp_config_str *config; | |
68ac40d2 | 797 | |
094f15c5 LE |
798 | config = g_malloc0(sizeof(*config)); |
799 | pstrcpy(config->str, sizeof(config->str), fwd->value->str); | |
800 | config->flags = flags; | |
801 | config->next = slirp_configs; | |
802 | slirp_configs = config; | |
68ac40d2 | 803 | |
094f15c5 | 804 | fwd = fwd->next; |
68ac40d2 | 805 | } |
68ac40d2 MM |
806 | } |
807 | ||
63d2960b KS |
808 | static const char **slirp_dnssearch(const StringList *dnsname) |
809 | { | |
810 | const StringList *c = dnsname; | |
811 | size_t i = 0, num_opts = 0; | |
812 | const char **ret; | |
813 | ||
814 | while (c) { | |
815 | num_opts++; | |
816 | c = c->next; | |
817 | } | |
818 | ||
819 | if (num_opts == 0) { | |
820 | return NULL; | |
821 | } | |
822 | ||
823 | ret = g_malloc((num_opts + 1) * sizeof(*ret)); | |
824 | c = dnsname; | |
825 | while (c) { | |
826 | ret[i++] = c->value->str; | |
827 | c = c->next; | |
828 | } | |
829 | ret[i] = NULL; | |
830 | return ret; | |
831 | } | |
832 | ||
cebea510 | 833 | int net_init_slirp(const Netdev *netdev, const char *name, |
a30ecde6 | 834 | NetClientState *peer, Error **errp) |
68ac40d2 | 835 | { |
a30ecde6 | 836 | /* FIXME error_setg(errp, ...) on failure */ |
68ac40d2 | 837 | struct slirp_config_str *config; |
094f15c5 | 838 | char *vnet; |
68ac40d2 | 839 | int ret; |
094f15c5 | 840 | const NetdevUserOptions *user; |
63d2960b | 841 | const char **dnssearch; |
0b11c036 | 842 | bool ipv4 = true, ipv6 = true; |
68ac40d2 | 843 | |
f394b2e2 EB |
844 | assert(netdev->type == NET_CLIENT_DRIVER_USER); |
845 | user = &netdev->u.user; | |
68ac40d2 | 846 | |
0b11c036 ST |
847 | if ((user->has_ipv6 && user->ipv6 && !user->has_ipv4) || |
848 | (user->has_ipv4 && !user->ipv4)) { | |
849 | ipv4 = 0; | |
850 | } | |
851 | if ((user->has_ipv4 && user->ipv4 && !user->has_ipv6) || | |
852 | (user->has_ipv6 && !user->ipv6)) { | |
853 | ipv6 = 0; | |
854 | } | |
855 | ||
094f15c5 LE |
856 | vnet = user->has_net ? g_strdup(user->net) : |
857 | user->has_ip ? g_strdup_printf("%s/24", user->ip) : | |
858 | NULL; | |
68ac40d2 | 859 | |
63d2960b KS |
860 | dnssearch = slirp_dnssearch(user->dnssearch); |
861 | ||
094f15c5 | 862 | /* all optional fields are initialized to "all bits zero" */ |
68ac40d2 | 863 | |
094f15c5 LE |
864 | net_init_slirp_configs(user->hostfwd, SLIRP_CFG_HOSTFWD); |
865 | net_init_slirp_configs(user->guestfwd, 0); | |
68ac40d2 | 866 | |
0b11c036 ST |
867 | ret = net_slirp_init(peer, "user", name, user->q_restrict, |
868 | ipv4, vnet, user->host, | |
869 | ipv6, user->ipv6_prefix, user->ipv6_prefixlen, | |
d8eb3864 | 870 | user->ipv6_host, user->hostname, user->tftp, |
7aac531e | 871 | user->bootfile, user->dhcpstart, |
d8eb3864 | 872 | user->dns, user->ipv6_dns, user->smb, |
63d2960b | 873 | user->smbserver, dnssearch); |
68ac40d2 MM |
874 | |
875 | while (slirp_configs) { | |
876 | config = slirp_configs; | |
877 | slirp_configs = config->next; | |
7267c094 | 878 | g_free(config); |
68ac40d2 MM |
879 | } |
880 | ||
7267c094 | 881 | g_free(vnet); |
63d2960b | 882 | g_free(dnssearch); |
68ac40d2 MM |
883 | |
884 | return ret; | |
885 | } | |
886 | ||
887 | int net_slirp_parse_legacy(QemuOptsList *opts_list, const char *optarg, int *ret) | |
888 | { | |
889 | if (strcmp(opts_list->name, "net") != 0 || | |
890 | strncmp(optarg, "channel,", strlen("channel,")) != 0) { | |
891 | return 0; | |
892 | } | |
893 | ||
f853ac66 TH |
894 | error_report("The '-net channel' option is deprecated. " |
895 | "Please use '-netdev user,guestfwd=...' instead."); | |
896 | ||
68ac40d2 MM |
897 | /* handle legacy -net channel,port:chr */ |
898 | optarg += strlen("channel,"); | |
899 | ||
900 | if (QTAILQ_EMPTY(&slirp_stacks)) { | |
901 | struct slirp_config_str *config; | |
902 | ||
7267c094 | 903 | config = g_malloc(sizeof(*config)); |
68ac40d2 MM |
904 | pstrcpy(config->str, sizeof(config->str), optarg); |
905 | config->flags = SLIRP_CFG_LEGACY; | |
906 | config->next = slirp_configs; | |
907 | slirp_configs = config; | |
908 | *ret = 0; | |
909 | } else { | |
910 | *ret = slirp_guestfwd(QTAILQ_FIRST(&slirp_stacks), optarg, 1); | |
911 | } | |
912 | ||
913 | return 1; | |
914 | } | |
915 |