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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 | */ | |
452fcdbc | 24 | |
2744d920 | 25 | #include "qemu/osdep.h" |
2addc8fb | 26 | #include "qemu/log.h" |
68ac40d2 MM |
27 | #include "net/slirp.h" |
28 | ||
68ac40d2 | 29 | |
35acbb30 | 30 | #if defined(CONFIG_SMBD_COMMAND) |
1cb1c5d1 | 31 | #include <pwd.h> |
28b150bf BS |
32 | #include <sys/wait.h> |
33 | #endif | |
969e50b6 | 34 | #include "net/eth.h" |
1422e32d | 35 | #include "net/net.h" |
a245fc18 PB |
36 | #include "clients.h" |
37 | #include "hub.h" | |
83c9089e | 38 | #include "monitor/monitor.h" |
d49b6836 | 39 | #include "qemu/error-report.h" |
1de7afc9 | 40 | #include "qemu/sockets.h" |
675b9b53 | 41 | #include <libslirp.h> |
4d43a603 | 42 | #include "chardev/char-fe.h" |
f6c2e66a | 43 | #include "sysemu/sysemu.h" |
f348b6d1 | 44 | #include "qemu/cutils.h" |
32a6ebec | 45 | #include "qapi/error.h" |
452fcdbc | 46 | #include "qapi/qmp/qdict.h" |
e05ae1d9 | 47 | #include "util.h" |
d8903441 MAL |
48 | #include "migration/register.h" |
49 | #include "migration/qemu-file-types.h" | |
68ac40d2 MM |
50 | |
51 | static int get_str_sep(char *buf, int buf_size, const char **pp, int sep) | |
52 | { | |
53 | const char *p, *p1; | |
54 | int len; | |
55 | p = *pp; | |
56 | p1 = strchr(p, sep); | |
57 | if (!p1) | |
58 | return -1; | |
59 | len = p1 - p; | |
60 | p1++; | |
61 | if (buf_size > 0) { | |
62 | if (len > buf_size - 1) | |
63 | len = buf_size - 1; | |
64 | memcpy(buf, p, len); | |
65 | buf[len] = '\0'; | |
66 | } | |
67 | *pp = p1; | |
68 | return 0; | |
69 | } | |
70 | ||
71 | /* slirp network adapter */ | |
72 | ||
73 | #define SLIRP_CFG_HOSTFWD 1 | |
68ac40d2 MM |
74 | |
75 | struct slirp_config_str { | |
76 | struct slirp_config_str *next; | |
77 | int flags; | |
78 | char str[1024]; | |
68ac40d2 MM |
79 | }; |
80 | ||
8d45a3b9 MAL |
81 | struct GuestFwd { |
82 | CharBackend hd; | |
83 | struct in_addr server; | |
84 | int port; | |
85 | Slirp *slirp; | |
86 | }; | |
87 | ||
68ac40d2 | 88 | typedef struct SlirpState { |
4e68f7a0 | 89 | NetClientState nc; |
68ac40d2 | 90 | QTAILQ_ENTRY(SlirpState) entry; |
68ac40d2 | 91 | Slirp *slirp; |
1ab67b98 | 92 | Notifier poll_notifier; |
f6c2e66a | 93 | Notifier exit_notifier; |
35acbb30 | 94 | #if defined(CONFIG_SMBD_COMMAND) |
f95cc8b6 | 95 | gchar *smb_dir; |
68ac40d2 | 96 | #endif |
8d45a3b9 | 97 | GSList *fwd; |
68ac40d2 MM |
98 | } SlirpState; |
99 | ||
100 | static struct slirp_config_str *slirp_configs; | |
b58deb34 | 101 | static QTAILQ_HEAD(, SlirpState) slirp_stacks = |
68ac40d2 MM |
102 | QTAILQ_HEAD_INITIALIZER(slirp_stacks); |
103 | ||
d18572dd TH |
104 | static int slirp_hostfwd(SlirpState *s, const char *redir_str, Error **errp); |
105 | static int slirp_guestfwd(SlirpState *s, const char *config_str, Error **errp); | |
68ac40d2 | 106 | |
35acbb30 | 107 | #if defined(CONFIG_SMBD_COMMAND) |
68ac40d2 | 108 | static int slirp_smb(SlirpState *s, const char *exported_dir, |
5c843af2 | 109 | struct in_addr vserver_addr, Error **errp); |
68ac40d2 MM |
110 | static void slirp_smb_cleanup(SlirpState *s); |
111 | #else | |
112 | static inline void slirp_smb_cleanup(SlirpState *s) { } | |
113 | #endif | |
114 | ||
625a526b MAL |
115 | static ssize_t net_slirp_send_packet(const void *pkt, size_t pkt_len, |
116 | void *opaque) | |
68ac40d2 MM |
117 | { |
118 | SlirpState *s = opaque; | |
969e50b6 BM |
119 | uint8_t min_pkt[ETH_ZLEN]; |
120 | size_t min_pktsz = sizeof(min_pkt); | |
121 | ||
bc38e31b | 122 | if (net_peer_needs_padding(&s->nc)) { |
969e50b6 BM |
123 | if (eth_pad_short_frame(min_pkt, &min_pktsz, pkt, pkt_len)) { |
124 | pkt = min_pkt; | |
125 | pkt_len = min_pktsz; | |
126 | } | |
127 | } | |
68ac40d2 | 128 | |
625a526b | 129 | return qemu_send_packet(&s->nc, pkt, pkt_len); |
68ac40d2 MM |
130 | } |
131 | ||
4e68f7a0 | 132 | static ssize_t net_slirp_receive(NetClientState *nc, const uint8_t *buf, size_t size) |
68ac40d2 | 133 | { |
ce20b5be | 134 | SlirpState *s = DO_UPCAST(SlirpState, nc, nc); |
68ac40d2 MM |
135 | |
136 | slirp_input(s->slirp, buf, size); | |
137 | ||
138 | return size; | |
139 | } | |
140 | ||
f6c2e66a PB |
141 | static void slirp_smb_exit(Notifier *n, void *data) |
142 | { | |
143 | SlirpState *s = container_of(n, SlirpState, exit_notifier); | |
144 | slirp_smb_cleanup(s); | |
145 | } | |
146 | ||
8d45a3b9 MAL |
147 | static void slirp_free_fwd(gpointer data) |
148 | { | |
149 | struct GuestFwd *fwd = data; | |
150 | ||
151 | qemu_chr_fe_deinit(&fwd->hd, true); | |
152 | g_free(data); | |
153 | } | |
154 | ||
4e68f7a0 | 155 | static void net_slirp_cleanup(NetClientState *nc) |
68ac40d2 | 156 | { |
ce20b5be | 157 | SlirpState *s = DO_UPCAST(SlirpState, nc, nc); |
68ac40d2 | 158 | |
8d45a3b9 | 159 | g_slist_free_full(s->fwd, slirp_free_fwd); |
1ab67b98 | 160 | main_loop_poll_remove_notifier(&s->poll_notifier); |
d8903441 | 161 | unregister_savevm(NULL, "slirp", s->slirp); |
68ac40d2 | 162 | slirp_cleanup(s->slirp); |
67f3280c MAL |
163 | if (s->exit_notifier.notify) { |
164 | qemu_remove_exit_notifier(&s->exit_notifier); | |
165 | } | |
68ac40d2 MM |
166 | slirp_smb_cleanup(s); |
167 | QTAILQ_REMOVE(&slirp_stacks, s, entry); | |
68ac40d2 MM |
168 | } |
169 | ||
ce20b5be | 170 | static NetClientInfo net_slirp_info = { |
f394b2e2 | 171 | .type = NET_CLIENT_DRIVER_USER, |
ce20b5be MM |
172 | .size = sizeof(SlirpState), |
173 | .receive = net_slirp_receive, | |
174 | .cleanup = net_slirp_cleanup, | |
175 | }; | |
176 | ||
3e0fad3a | 177 | static void net_slirp_guest_error(const char *msg, void *opaque) |
2addc8fb MAL |
178 | { |
179 | qemu_log_mask(LOG_GUEST_ERROR, "%s", msg); | |
180 | } | |
181 | ||
3e0fad3a | 182 | static int64_t net_slirp_clock_get_ns(void *opaque) |
e6dbff3f MAL |
183 | { |
184 | return qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL); | |
185 | } | |
186 | ||
6222e55d | 187 | typedef struct SlirpTimer SlirpTimer; |
ad2e5b87 PB |
188 | struct SlirpTimer { |
189 | QEMUTimer timer; | |
6222e55d PB |
190 | #if SLIRP_CHECK_VERSION(4,7,0) |
191 | Slirp *slirp; | |
192 | SlirpTimerId id; | |
193 | void *cb_opaque; | |
194 | #endif | |
195 | }; | |
196 | ||
197 | #if SLIRP_CHECK_VERSION(4,7,0) | |
198 | static void net_slirp_init_completed(Slirp *slirp, void *opaque) | |
199 | { | |
200 | SlirpState *s = opaque; | |
201 | s->slirp = slirp; | |
ad2e5b87 PB |
202 | } |
203 | ||
6222e55d PB |
204 | static void net_slirp_timer_cb(void *opaque) |
205 | { | |
206 | SlirpTimer *t = opaque; | |
207 | slirp_handle_timer(t->slirp, t->id, t->cb_opaque); | |
208 | } | |
209 | ||
210 | static void *net_slirp_timer_new_opaque(SlirpTimerId id, | |
211 | void *cb_opaque, void *opaque) | |
212 | { | |
213 | SlirpState *s = opaque; | |
214 | SlirpTimer *t = g_new(SlirpTimer, 1); | |
215 | t->slirp = s->slirp; | |
216 | t->id = id; | |
217 | t->cb_opaque = cb_opaque; | |
218 | timer_init_full(&t->timer, NULL, QEMU_CLOCK_VIRTUAL, | |
219 | SCALE_MS, QEMU_TIMER_ATTR_EXTERNAL, | |
220 | net_slirp_timer_cb, t); | |
221 | return t; | |
222 | } | |
223 | #else | |
3e0fad3a MAL |
224 | static void *net_slirp_timer_new(SlirpTimerCb cb, |
225 | void *cb_opaque, void *opaque) | |
07abf6d4 | 226 | { |
ad2e5b87 PB |
227 | SlirpTimer *t = g_new(SlirpTimer, 1); |
228 | timer_init_full(&t->timer, NULL, QEMU_CLOCK_VIRTUAL, | |
229 | SCALE_MS, QEMU_TIMER_ATTR_EXTERNAL, | |
230 | cb, cb_opaque); | |
231 | return t; | |
07abf6d4 | 232 | } |
6222e55d | 233 | #endif |
07abf6d4 | 234 | |
3e0fad3a | 235 | static void net_slirp_timer_free(void *timer, void *opaque) |
07abf6d4 | 236 | { |
ad2e5b87 PB |
237 | SlirpTimer *t = timer; |
238 | timer_del(&t->timer); | |
239 | g_free(t); | |
07abf6d4 MAL |
240 | } |
241 | ||
3e0fad3a MAL |
242 | static void net_slirp_timer_mod(void *timer, int64_t expire_timer, |
243 | void *opaque) | |
07abf6d4 | 244 | { |
ad2e5b87 PB |
245 | SlirpTimer *t = timer; |
246 | timer_mod(&t->timer, expire_timer); | |
07abf6d4 MAL |
247 | } |
248 | ||
3e0fad3a | 249 | static void net_slirp_register_poll_fd(int fd, void *opaque) |
848c7092 MAL |
250 | { |
251 | qemu_fd_register(fd); | |
252 | } | |
253 | ||
3e0fad3a | 254 | static void net_slirp_unregister_poll_fd(int fd, void *opaque) |
f6e5aa36 MAL |
255 | { |
256 | /* no qemu_fd_unregister */ | |
257 | } | |
258 | ||
3e0fad3a MAL |
259 | static void net_slirp_notify(void *opaque) |
260 | { | |
261 | qemu_notify_event(); | |
262 | } | |
263 | ||
d846b927 | 264 | static const SlirpCb slirp_cb = { |
625a526b | 265 | .send_packet = net_slirp_send_packet, |
2addc8fb | 266 | .guest_error = net_slirp_guest_error, |
e6dbff3f | 267 | .clock_get_ns = net_slirp_clock_get_ns, |
6222e55d PB |
268 | #if SLIRP_CHECK_VERSION(4,7,0) |
269 | .init_completed = net_slirp_init_completed, | |
270 | .timer_new_opaque = net_slirp_timer_new_opaque, | |
271 | #else | |
07abf6d4 | 272 | .timer_new = net_slirp_timer_new, |
6222e55d | 273 | #endif |
07abf6d4 MAL |
274 | .timer_free = net_slirp_timer_free, |
275 | .timer_mod = net_slirp_timer_mod, | |
848c7092 | 276 | .register_poll_fd = net_slirp_register_poll_fd, |
f6e5aa36 | 277 | .unregister_poll_fd = net_slirp_unregister_poll_fd, |
3e0fad3a | 278 | .notify = net_slirp_notify, |
d846b927 MAL |
279 | }; |
280 | ||
deaeb3f7 MAL |
281 | static int slirp_poll_to_gio(int events) |
282 | { | |
283 | int ret = 0; | |
284 | ||
285 | if (events & SLIRP_POLL_IN) { | |
286 | ret |= G_IO_IN; | |
287 | } | |
288 | if (events & SLIRP_POLL_OUT) { | |
289 | ret |= G_IO_OUT; | |
290 | } | |
291 | if (events & SLIRP_POLL_PRI) { | |
292 | ret |= G_IO_PRI; | |
293 | } | |
294 | if (events & SLIRP_POLL_ERR) { | |
295 | ret |= G_IO_ERR; | |
296 | } | |
297 | if (events & SLIRP_POLL_HUP) { | |
298 | ret |= G_IO_HUP; | |
299 | } | |
300 | ||
301 | return ret; | |
302 | } | |
303 | ||
304 | static int net_slirp_add_poll(int fd, int events, void *opaque) | |
305 | { | |
306 | GArray *pollfds = opaque; | |
307 | GPollFD pfd = { | |
308 | .fd = fd, | |
309 | .events = slirp_poll_to_gio(events), | |
310 | }; | |
311 | int idx = pollfds->len; | |
312 | g_array_append_val(pollfds, pfd); | |
313 | return idx; | |
314 | } | |
315 | ||
316 | static int slirp_gio_to_poll(int events) | |
317 | { | |
318 | int ret = 0; | |
319 | ||
320 | if (events & G_IO_IN) { | |
321 | ret |= SLIRP_POLL_IN; | |
322 | } | |
323 | if (events & G_IO_OUT) { | |
324 | ret |= SLIRP_POLL_OUT; | |
325 | } | |
326 | if (events & G_IO_PRI) { | |
327 | ret |= SLIRP_POLL_PRI; | |
328 | } | |
329 | if (events & G_IO_ERR) { | |
330 | ret |= SLIRP_POLL_ERR; | |
331 | } | |
332 | if (events & G_IO_HUP) { | |
333 | ret |= SLIRP_POLL_HUP; | |
334 | } | |
335 | ||
336 | return ret; | |
337 | } | |
338 | ||
339 | static int net_slirp_get_revents(int idx, void *opaque) | |
340 | { | |
341 | GArray *pollfds = opaque; | |
342 | ||
343 | return slirp_gio_to_poll(g_array_index(pollfds, GPollFD, idx).revents); | |
344 | } | |
345 | ||
1ab67b98 MAL |
346 | static void net_slirp_poll_notify(Notifier *notifier, void *data) |
347 | { | |
348 | MainLoopPoll *poll = data; | |
349 | SlirpState *s = container_of(notifier, SlirpState, poll_notifier); | |
350 | ||
351 | switch (poll->state) { | |
352 | case MAIN_LOOP_POLL_FILL: | |
deaeb3f7 MAL |
353 | slirp_pollfds_fill(s->slirp, &poll->timeout, |
354 | net_slirp_add_poll, poll->pollfds); | |
1ab67b98 MAL |
355 | break; |
356 | case MAIN_LOOP_POLL_OK: | |
357 | case MAIN_LOOP_POLL_ERR: | |
deaeb3f7 MAL |
358 | slirp_pollfds_poll(s->slirp, poll->state == MAIN_LOOP_POLL_ERR, |
359 | net_slirp_get_revents, poll->pollfds); | |
1ab67b98 MAL |
360 | break; |
361 | default: | |
362 | g_assert_not_reached(); | |
363 | } | |
364 | } | |
365 | ||
d8903441 MAL |
366 | static ssize_t |
367 | net_slirp_stream_read(void *buf, size_t size, void *opaque) | |
368 | { | |
369 | QEMUFile *f = opaque; | |
370 | ||
371 | return qemu_get_buffer(f, buf, size); | |
372 | } | |
373 | ||
374 | static ssize_t | |
375 | net_slirp_stream_write(const void *buf, size_t size, void *opaque) | |
376 | { | |
377 | QEMUFile *f = opaque; | |
378 | ||
379 | qemu_put_buffer(f, buf, size); | |
380 | if (qemu_file_get_error(f)) { | |
381 | return -1; | |
382 | } | |
383 | ||
384 | return size; | |
385 | } | |
386 | ||
387 | static int net_slirp_state_load(QEMUFile *f, void *opaque, int version_id) | |
388 | { | |
389 | Slirp *slirp = opaque; | |
390 | ||
391 | return slirp_state_load(slirp, version_id, net_slirp_stream_read, f); | |
392 | } | |
393 | ||
394 | static void net_slirp_state_save(QEMUFile *f, void *opaque) | |
395 | { | |
396 | Slirp *slirp = opaque; | |
397 | ||
398 | slirp_state_save(slirp, net_slirp_stream_write, f); | |
399 | } | |
400 | ||
401 | static SaveVMHandlers savevm_slirp_state = { | |
402 | .save_state = net_slirp_state_save, | |
403 | .load_state = net_slirp_state_load, | |
404 | }; | |
405 | ||
4e68f7a0 | 406 | static int net_slirp_init(NetClientState *peer, const char *model, |
68ac40d2 | 407 | const char *name, int restricted, |
0b11c036 ST |
408 | bool ipv4, const char *vnetwork, const char *vhost, |
409 | bool ipv6, const char *vprefix6, int vprefix6_len, | |
7aac531e | 410 | const char *vhost6, |
68ac40d2 MM |
411 | const char *vhostname, const char *tftp_export, |
412 | const char *bootfile, const char *vdhcp_start, | |
7aac531e YB |
413 | const char *vnameserver, const char *vnameserver6, |
414 | const char *smb_export, const char *vsmbserver, | |
f18d1375 | 415 | const char **dnssearch, const char *vdomainname, |
0fca92b9 | 416 | const char *tftp_server_name, |
f18d1375 | 417 | Error **errp) |
68ac40d2 MM |
418 | { |
419 | /* default settings according to historic slirp */ | |
420 | struct in_addr net = { .s_addr = htonl(0x0a000200) }; /* 10.0.2.0 */ | |
421 | struct in_addr mask = { .s_addr = htonl(0xffffff00) }; /* 255.255.255.0 */ | |
422 | struct in_addr host = { .s_addr = htonl(0x0a000202) }; /* 10.0.2.2 */ | |
423 | struct in_addr dhcp = { .s_addr = htonl(0x0a00020f) }; /* 10.0.2.15 */ | |
424 | struct in_addr dns = { .s_addr = htonl(0x0a000203) }; /* 10.0.2.3 */ | |
7aac531e YB |
425 | struct in6_addr ip6_prefix; |
426 | struct in6_addr ip6_host; | |
427 | struct in6_addr ip6_dns; | |
35acbb30 | 428 | #if defined(CONFIG_SMBD_COMMAND) |
68ac40d2 MM |
429 | struct in_addr smbsrv = { .s_addr = 0 }; |
430 | #endif | |
bce63ded | 431 | SlirpConfig cfg = { 0 }; |
4e68f7a0 | 432 | NetClientState *nc; |
68ac40d2 MM |
433 | SlirpState *s; |
434 | char buf[20]; | |
435 | uint32_t addr; | |
436 | int shift; | |
437 | char *end; | |
438 | struct slirp_config_str *config; | |
439 | ||
0b11c036 | 440 | if (!ipv4 && (vnetwork || vhost || vnameserver)) { |
5c843af2 | 441 | error_setg(errp, "IPv4 disabled but netmask/host/dns provided"); |
0b11c036 ST |
442 | return -1; |
443 | } | |
444 | ||
445 | if (!ipv6 && (vprefix6 || vhost6 || vnameserver6)) { | |
5c843af2 | 446 | error_setg(errp, "IPv6 disabled but prefix/host6/dns6 provided"); |
0b11c036 ST |
447 | return -1; |
448 | } | |
449 | ||
450 | if (!ipv4 && !ipv6) { | |
451 | /* It doesn't make sense to disable both */ | |
5c843af2 | 452 | error_setg(errp, "IPv4 and IPv6 disabled"); |
0b11c036 ST |
453 | return -1; |
454 | } | |
455 | ||
68ac40d2 MM |
456 | if (vnetwork) { |
457 | if (get_str_sep(buf, sizeof(buf), &vnetwork, '/') < 0) { | |
458 | if (!inet_aton(vnetwork, &net)) { | |
5c843af2 | 459 | error_setg(errp, "Failed to parse netmask"); |
68ac40d2 MM |
460 | return -1; |
461 | } | |
462 | addr = ntohl(net.s_addr); | |
463 | if (!(addr & 0x80000000)) { | |
464 | mask.s_addr = htonl(0xff000000); /* class A */ | |
465 | } else if ((addr & 0xfff00000) == 0xac100000) { | |
466 | mask.s_addr = htonl(0xfff00000); /* priv. 172.16.0.0/12 */ | |
467 | } else if ((addr & 0xc0000000) == 0x80000000) { | |
468 | mask.s_addr = htonl(0xffff0000); /* class B */ | |
469 | } else if ((addr & 0xffff0000) == 0xc0a80000) { | |
470 | mask.s_addr = htonl(0xffff0000); /* priv. 192.168.0.0/16 */ | |
471 | } else if ((addr & 0xffff0000) == 0xc6120000) { | |
472 | mask.s_addr = htonl(0xfffe0000); /* tests 198.18.0.0/15 */ | |
473 | } else if ((addr & 0xe0000000) == 0xe0000000) { | |
474 | mask.s_addr = htonl(0xffffff00); /* class C */ | |
475 | } else { | |
476 | mask.s_addr = htonl(0xfffffff0); /* multicast/reserved */ | |
477 | } | |
478 | } else { | |
479 | if (!inet_aton(buf, &net)) { | |
5c843af2 | 480 | error_setg(errp, "Failed to parse netmask"); |
68ac40d2 MM |
481 | return -1; |
482 | } | |
483 | shift = strtol(vnetwork, &end, 10); | |
484 | if (*end != '\0') { | |
485 | if (!inet_aton(vnetwork, &mask)) { | |
5c843af2 HP |
486 | error_setg(errp, |
487 | "Failed to parse netmask (trailing chars)"); | |
68ac40d2 MM |
488 | return -1; |
489 | } | |
490 | } else if (shift < 4 || shift > 32) { | |
5c843af2 HP |
491 | error_setg(errp, |
492 | "Invalid netmask provided (must be in range 4-32)"); | |
68ac40d2 MM |
493 | return -1; |
494 | } else { | |
495 | mask.s_addr = htonl(0xffffffff << (32 - shift)); | |
496 | } | |
497 | } | |
498 | net.s_addr &= mask.s_addr; | |
499 | host.s_addr = net.s_addr | (htonl(0x0202) & ~mask.s_addr); | |
500 | dhcp.s_addr = net.s_addr | (htonl(0x020f) & ~mask.s_addr); | |
501 | dns.s_addr = net.s_addr | (htonl(0x0203) & ~mask.s_addr); | |
502 | } | |
503 | ||
504 | if (vhost && !inet_aton(vhost, &host)) { | |
5c843af2 | 505 | error_setg(errp, "Failed to parse host"); |
68ac40d2 MM |
506 | return -1; |
507 | } | |
508 | if ((host.s_addr & mask.s_addr) != net.s_addr) { | |
5c843af2 | 509 | error_setg(errp, "Host doesn't belong to network"); |
68ac40d2 MM |
510 | return -1; |
511 | } | |
512 | ||
68756ba8 | 513 | if (vnameserver && !inet_aton(vnameserver, &dns)) { |
5c843af2 | 514 | error_setg(errp, "Failed to parse DNS"); |
68ac40d2 MM |
515 | return -1; |
516 | } | |
120b721f | 517 | if (restricted && (dns.s_addr & mask.s_addr) != net.s_addr) { |
5c843af2 HP |
518 | error_setg(errp, "DNS doesn't belong to network"); |
519 | return -1; | |
520 | } | |
521 | if (dns.s_addr == host.s_addr) { | |
522 | error_setg(errp, "DNS must be different from host"); | |
68ac40d2 MM |
523 | return -1; |
524 | } | |
525 | ||
68756ba8 | 526 | if (vdhcp_start && !inet_aton(vdhcp_start, &dhcp)) { |
5c843af2 | 527 | error_setg(errp, "Failed to parse DHCP start address"); |
68ac40d2 MM |
528 | return -1; |
529 | } | |
5c843af2 HP |
530 | if ((dhcp.s_addr & mask.s_addr) != net.s_addr) { |
531 | error_setg(errp, "DHCP doesn't belong to network"); | |
532 | return -1; | |
533 | } | |
534 | if (dhcp.s_addr == host.s_addr || dhcp.s_addr == dns.s_addr) { | |
0c373c01 | 535 | error_setg(errp, "DHCP must be different from host and DNS"); |
68ac40d2 MM |
536 | return -1; |
537 | } | |
538 | ||
35acbb30 | 539 | #if defined(CONFIG_SMBD_COMMAND) |
68ac40d2 | 540 | if (vsmbserver && !inet_aton(vsmbserver, &smbsrv)) { |
5c843af2 | 541 | error_setg(errp, "Failed to parse SMB address"); |
68ac40d2 MM |
542 | return -1; |
543 | } | |
544 | #endif | |
545 | ||
7aac531e YB |
546 | if (!vprefix6) { |
547 | vprefix6 = "fec0::"; | |
548 | } | |
549 | if (!inet_pton(AF_INET6, vprefix6, &ip6_prefix)) { | |
5c843af2 | 550 | error_setg(errp, "Failed to parse IPv6 prefix"); |
7aac531e YB |
551 | return -1; |
552 | } | |
7aac531e YB |
553 | |
554 | if (!vprefix6_len) { | |
555 | vprefix6_len = 64; | |
556 | } | |
557 | if (vprefix6_len < 0 || vprefix6_len > 126) { | |
5c843af2 | 558 | error_setg(errp, |
178a0a5d SG |
559 | "Invalid IPv6 prefix provided " |
560 | "(IPv6 prefix length must be between 0 and 126)"); | |
7aac531e YB |
561 | return -1; |
562 | } | |
563 | ||
564 | if (vhost6) { | |
7aac531e | 565 | if (!inet_pton(AF_INET6, vhost6, &ip6_host)) { |
5c843af2 | 566 | error_setg(errp, "Failed to parse IPv6 host"); |
7aac531e YB |
567 | return -1; |
568 | } | |
569 | if (!in6_equal_net(&ip6_prefix, &ip6_host, vprefix6_len)) { | |
5c843af2 | 570 | error_setg(errp, "IPv6 Host doesn't belong to network"); |
7aac531e YB |
571 | return -1; |
572 | } | |
7aac531e YB |
573 | } else { |
574 | ip6_host = ip6_prefix; | |
575 | ip6_host.s6_addr[15] |= 2; | |
576 | } | |
577 | ||
578 | if (vnameserver6) { | |
7aac531e | 579 | if (!inet_pton(AF_INET6, vnameserver6, &ip6_dns)) { |
5c843af2 | 580 | error_setg(errp, "Failed to parse IPv6 DNS"); |
7aac531e YB |
581 | return -1; |
582 | } | |
120b721f | 583 | if (restricted && !in6_equal_net(&ip6_prefix, &ip6_dns, vprefix6_len)) { |
5c843af2 | 584 | error_setg(errp, "IPv6 DNS doesn't belong to network"); |
7aac531e YB |
585 | return -1; |
586 | } | |
7aac531e YB |
587 | } else { |
588 | ip6_dns = ip6_prefix; | |
589 | ip6_dns.s6_addr[15] |= 3; | |
590 | } | |
591 | ||
f18d1375 BD |
592 | if (vdomainname && !*vdomainname) { |
593 | error_setg(errp, "'domainname' parameter cannot be empty"); | |
594 | return -1; | |
595 | } | |
596 | ||
6e157a03 FZ |
597 | if (vdomainname && strlen(vdomainname) > 255) { |
598 | error_setg(errp, "'domainname' parameter cannot exceed 255 bytes"); | |
599 | return -1; | |
600 | } | |
601 | ||
602 | if (vhostname && strlen(vhostname) > 255) { | |
603 | error_setg(errp, "'vhostname' parameter cannot exceed 255 bytes"); | |
604 | return -1; | |
605 | } | |
7aac531e | 606 | |
0fca92b9 FZ |
607 | if (tftp_server_name && strlen(tftp_server_name) > 255) { |
608 | error_setg(errp, "'tftp-server-name' parameter cannot exceed 255 bytes"); | |
609 | return -1; | |
610 | } | |
611 | ||
ab5f3f84 | 612 | nc = qemu_new_net_client(&net_slirp_info, peer, model, name); |
ce20b5be | 613 | |
53b85d95 LV |
614 | qemu_set_info_str(nc, "net=%s,restrict=%s", inet_ntoa(net), |
615 | restricted ? "on" : "off"); | |
d89b4f83 | 616 | |
ce20b5be MM |
617 | s = DO_UPCAST(SlirpState, nc, nc); |
618 | ||
6222e55d | 619 | cfg.version = SLIRP_CHECK_VERSION(4,7,0) ? 4 : 1; |
bce63ded PB |
620 | cfg.restricted = restricted; |
621 | cfg.in_enabled = ipv4; | |
622 | cfg.vnetwork = net; | |
623 | cfg.vnetmask = mask; | |
624 | cfg.vhost = host; | |
625 | cfg.in6_enabled = ipv6; | |
626 | cfg.vprefix_addr6 = ip6_prefix; | |
627 | cfg.vprefix_len = vprefix6_len; | |
628 | cfg.vhost6 = ip6_host; | |
629 | cfg.vhostname = vhostname; | |
630 | cfg.tftp_server_name = tftp_server_name; | |
631 | cfg.tftp_path = tftp_export; | |
632 | cfg.bootfile = bootfile; | |
633 | cfg.vdhcp_start = dhcp; | |
634 | cfg.vnameserver = dns; | |
635 | cfg.vnameserver6 = ip6_dns; | |
636 | cfg.vdnssearch = dnssearch; | |
637 | cfg.vdomainname = vdomainname; | |
638 | s->slirp = slirp_new(&cfg, &slirp_cb, s); | |
68ac40d2 MM |
639 | QTAILQ_INSERT_TAIL(&slirp_stacks, s, entry); |
640 | ||
d8903441 MAL |
641 | /* |
642 | * Make sure the current bitstream version of slirp is 4, to avoid | |
643 | * QEMU migration incompatibilities, if upstream slirp bumped the | |
644 | * version. | |
645 | * | |
646 | * FIXME: use bitfields of features? teach libslirp to save with | |
647 | * specific version? | |
648 | */ | |
649 | g_assert(slirp_state_version() == 4); | |
ce62df53 | 650 | register_savevm_live("slirp", 0, slirp_state_version(), |
d8903441 MAL |
651 | &savevm_slirp_state, s->slirp); |
652 | ||
1ab67b98 MAL |
653 | s->poll_notifier.notify = net_slirp_poll_notify; |
654 | main_loop_poll_add_notifier(&s->poll_notifier); | |
655 | ||
68ac40d2 MM |
656 | for (config = slirp_configs; config; config = config->next) { |
657 | if (config->flags & SLIRP_CFG_HOSTFWD) { | |
d18572dd | 658 | if (slirp_hostfwd(s, config->str, errp) < 0) { |
ce20b5be | 659 | goto error; |
5c843af2 | 660 | } |
68ac40d2 | 661 | } else { |
d18572dd | 662 | if (slirp_guestfwd(s, config->str, errp) < 0) { |
ce20b5be | 663 | goto error; |
5c843af2 | 664 | } |
68ac40d2 MM |
665 | } |
666 | } | |
35acbb30 | 667 | #if defined(CONFIG_SMBD_COMMAND) |
68ac40d2 | 668 | if (smb_export) { |
5c843af2 | 669 | if (slirp_smb(s, smb_export, smbsrv, errp) < 0) { |
ce20b5be | 670 | goto error; |
5c843af2 | 671 | } |
68ac40d2 MM |
672 | } |
673 | #endif | |
674 | ||
f6c2e66a PB |
675 | s->exit_notifier.notify = slirp_smb_exit; |
676 | qemu_add_exit_notifier(&s->exit_notifier); | |
68ac40d2 | 677 | return 0; |
ce20b5be MM |
678 | |
679 | error: | |
b20c6b9e | 680 | qemu_del_net_client(nc); |
ce20b5be | 681 | return -1; |
68ac40d2 MM |
682 | } |
683 | ||
b4983c57 | 684 | static SlirpState *slirp_lookup(Monitor *mon, const char *id) |
68ac40d2 | 685 | { |
b4983c57 TH |
686 | if (id) { |
687 | NetClientState *nc = qemu_find_netdev(id); | |
688 | if (!nc) { | |
689 | monitor_printf(mon, "unrecognized netdev id '%s'\n", id); | |
690 | return NULL; | |
68ac40d2 | 691 | } |
ce20b5be | 692 | if (strcmp(nc->model, "user")) { |
68ac40d2 MM |
693 | monitor_printf(mon, "invalid device specified\n"); |
694 | return NULL; | |
695 | } | |
ce20b5be | 696 | return DO_UPCAST(SlirpState, nc, nc); |
68ac40d2 MM |
697 | } else { |
698 | if (QTAILQ_EMPTY(&slirp_stacks)) { | |
699 | monitor_printf(mon, "user mode network stack not in use\n"); | |
700 | return NULL; | |
701 | } | |
702 | return QTAILQ_FIRST(&slirp_stacks); | |
703 | } | |
704 | } | |
705 | ||
3e5a50d6 | 706 | void hmp_hostfwd_remove(Monitor *mon, const QDict *qdict) |
68ac40d2 MM |
707 | { |
708 | struct in_addr host_addr = { .s_addr = INADDR_ANY }; | |
709 | int host_port; | |
e30e5eb6 | 710 | char buf[256]; |
68ac40d2 MM |
711 | const char *src_str, *p; |
712 | SlirpState *s; | |
713 | int is_udp = 0; | |
714 | int err; | |
715 | const char *arg1 = qdict_get_str(qdict, "arg1"); | |
716 | const char *arg2 = qdict_get_try_str(qdict, "arg2"); | |
68ac40d2 | 717 | |
b4983c57 TH |
718 | if (arg2) { |
719 | s = slirp_lookup(mon, arg1); | |
93653066 | 720 | src_str = arg2; |
68ac40d2 | 721 | } else { |
b4983c57 | 722 | s = slirp_lookup(mon, NULL); |
68ac40d2 MM |
723 | src_str = arg1; |
724 | } | |
725 | if (!s) { | |
726 | return; | |
727 | } | |
728 | ||
68ac40d2 | 729 | p = src_str; |
e30e5eb6 MA |
730 | if (!p || get_str_sep(buf, sizeof(buf), &p, ':') < 0) { |
731 | goto fail_syntax; | |
732 | } | |
68ac40d2 MM |
733 | |
734 | if (!strcmp(buf, "tcp") || buf[0] == '\0') { | |
735 | is_udp = 0; | |
736 | } else if (!strcmp(buf, "udp")) { | |
737 | is_udp = 1; | |
738 | } else { | |
739 | goto fail_syntax; | |
740 | } | |
741 | ||
742 | if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) { | |
743 | goto fail_syntax; | |
744 | } | |
745 | if (buf[0] != '\0' && !inet_aton(buf, &host_addr)) { | |
746 | goto fail_syntax; | |
747 | } | |
748 | ||
1fb3f7f2 NA |
749 | if (qemu_strtoi(p, NULL, 10, &host_port)) { |
750 | goto fail_syntax; | |
751 | } | |
68ac40d2 | 752 | |
70381662 | 753 | err = slirp_remove_hostfwd(s->slirp, is_udp, host_addr, host_port); |
68ac40d2 MM |
754 | |
755 | monitor_printf(mon, "host forwarding rule for %s %s\n", src_str, | |
b15ba6c9 | 756 | err ? "not found" : "removed"); |
68ac40d2 MM |
757 | return; |
758 | ||
759 | fail_syntax: | |
760 | monitor_printf(mon, "invalid format\n"); | |
761 | } | |
762 | ||
d18572dd | 763 | static int slirp_hostfwd(SlirpState *s, const char *redir_str, Error **errp) |
68ac40d2 MM |
764 | { |
765 | struct in_addr host_addr = { .s_addr = INADDR_ANY }; | |
766 | struct in_addr guest_addr = { .s_addr = 0 }; | |
767 | int host_port, guest_port; | |
768 | const char *p; | |
769 | char buf[256]; | |
770 | int is_udp; | |
771 | char *end; | |
0e7e4fb0 | 772 | const char *fail_reason = "Unknown reason"; |
68ac40d2 MM |
773 | |
774 | p = redir_str; | |
775 | if (!p || get_str_sep(buf, sizeof(buf), &p, ':') < 0) { | |
0e7e4fb0 | 776 | fail_reason = "No : separators"; |
68ac40d2 MM |
777 | goto fail_syntax; |
778 | } | |
779 | if (!strcmp(buf, "tcp") || buf[0] == '\0') { | |
780 | is_udp = 0; | |
781 | } else if (!strcmp(buf, "udp")) { | |
782 | is_udp = 1; | |
783 | } else { | |
0e7e4fb0 | 784 | fail_reason = "Bad protocol name"; |
68ac40d2 MM |
785 | goto fail_syntax; |
786 | } | |
787 | ||
d18572dd TH |
788 | if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) { |
789 | fail_reason = "Missing : separator"; | |
790 | goto fail_syntax; | |
791 | } | |
792 | if (buf[0] != '\0' && !inet_aton(buf, &host_addr)) { | |
793 | fail_reason = "Bad host address"; | |
794 | goto fail_syntax; | |
68ac40d2 MM |
795 | } |
796 | ||
d18572dd | 797 | if (get_str_sep(buf, sizeof(buf), &p, '-') < 0) { |
0e7e4fb0 | 798 | fail_reason = "Bad host port separator"; |
68ac40d2 MM |
799 | goto fail_syntax; |
800 | } | |
801 | host_port = strtol(buf, &end, 0); | |
0bed71ed | 802 | if (*end != '\0' || host_port < 0 || host_port > 65535) { |
0e7e4fb0 | 803 | fail_reason = "Bad host port"; |
68ac40d2 MM |
804 | goto fail_syntax; |
805 | } | |
806 | ||
807 | if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) { | |
0e7e4fb0 | 808 | fail_reason = "Missing guest address"; |
68ac40d2 MM |
809 | goto fail_syntax; |
810 | } | |
811 | if (buf[0] != '\0' && !inet_aton(buf, &guest_addr)) { | |
0e7e4fb0 | 812 | fail_reason = "Bad guest address"; |
68ac40d2 MM |
813 | goto fail_syntax; |
814 | } | |
815 | ||
816 | guest_port = strtol(p, &end, 0); | |
817 | if (*end != '\0' || guest_port < 1 || guest_port > 65535) { | |
0e7e4fb0 | 818 | fail_reason = "Bad guest port"; |
68ac40d2 MM |
819 | goto fail_syntax; |
820 | } | |
821 | ||
822 | if (slirp_add_hostfwd(s->slirp, is_udp, host_addr, host_port, guest_addr, | |
823 | guest_port) < 0) { | |
5c843af2 HP |
824 | error_setg(errp, "Could not set up host forwarding rule '%s'", |
825 | redir_str); | |
68ac40d2 MM |
826 | return -1; |
827 | } | |
828 | return 0; | |
829 | ||
830 | fail_syntax: | |
0e7e4fb0 DDAG |
831 | error_setg(errp, "Invalid host forwarding rule '%s' (%s)", redir_str, |
832 | fail_reason); | |
68ac40d2 MM |
833 | return -1; |
834 | } | |
835 | ||
3e5a50d6 | 836 | void hmp_hostfwd_add(Monitor *mon, const QDict *qdict) |
68ac40d2 MM |
837 | { |
838 | const char *redir_str; | |
839 | SlirpState *s; | |
840 | const char *arg1 = qdict_get_str(qdict, "arg1"); | |
841 | const char *arg2 = qdict_get_try_str(qdict, "arg2"); | |
68ac40d2 | 842 | |
b4983c57 TH |
843 | if (arg2) { |
844 | s = slirp_lookup(mon, arg1); | |
93653066 | 845 | redir_str = arg2; |
68ac40d2 | 846 | } else { |
b4983c57 | 847 | s = slirp_lookup(mon, NULL); |
68ac40d2 MM |
848 | redir_str = arg1; |
849 | } | |
850 | if (s) { | |
5c843af2 | 851 | Error *err = NULL; |
d18572dd | 852 | if (slirp_hostfwd(s, redir_str, &err) < 0) { |
5c843af2 HP |
853 | error_report_err(err); |
854 | } | |
68ac40d2 MM |
855 | } |
856 | ||
857 | } | |
858 | ||
35acbb30 | 859 | #if defined(CONFIG_SMBD_COMMAND) |
68ac40d2 MM |
860 | |
861 | /* automatic user mode samba server configuration */ | |
862 | static void slirp_smb_cleanup(SlirpState *s) | |
863 | { | |
5a01e99f | 864 | int ret; |
68ac40d2 | 865 | |
f95cc8b6 DDAG |
866 | if (s->smb_dir) { |
867 | gchar *cmd = g_strdup_printf("rm -rf %s", s->smb_dir); | |
5a01e99f | 868 | ret = system(cmd); |
24ac07de | 869 | if (ret == -1 || !WIFEXITED(ret)) { |
1ecda02b | 870 | error_report("'%s' failed.", cmd); |
5a01e99f | 871 | } else if (WEXITSTATUS(ret)) { |
1ecda02b MA |
872 | error_report("'%s' failed. Error code: %d", |
873 | cmd, WEXITSTATUS(ret)); | |
5a01e99f | 874 | } |
f95cc8b6 DDAG |
875 | g_free(cmd); |
876 | g_free(s->smb_dir); | |
877 | s->smb_dir = NULL; | |
68ac40d2 MM |
878 | } |
879 | } | |
880 | ||
881 | static int slirp_smb(SlirpState* s, const char *exported_dir, | |
5c843af2 | 882 | struct in_addr vserver_addr, Error **errp) |
68ac40d2 | 883 | { |
f95cc8b6 DDAG |
884 | char *smb_conf; |
885 | char *smb_cmdline; | |
1cb1c5d1 | 886 | struct passwd *passwd; |
68ac40d2 MM |
887 | FILE *f; |
888 | ||
1cb1c5d1 JK |
889 | passwd = getpwuid(geteuid()); |
890 | if (!passwd) { | |
5c843af2 | 891 | error_setg(errp, "Failed to retrieve user name"); |
1cb1c5d1 JK |
892 | return -1; |
893 | } | |
894 | ||
927d811b | 895 | if (access(CONFIG_SMBD_COMMAND, F_OK)) { |
5c843af2 HP |
896 | error_setg(errp, "Could not find '%s', please install it", |
897 | CONFIG_SMBD_COMMAND); | |
927d811b DH |
898 | return -1; |
899 | } | |
900 | ||
901 | if (access(exported_dir, R_OK | X_OK)) { | |
5c843af2 HP |
902 | error_setg(errp, "Error accessing shared directory '%s': %s", |
903 | exported_dir, strerror(errno)); | |
927d811b DH |
904 | return -1; |
905 | } | |
906 | ||
f95cc8b6 DDAG |
907 | s->smb_dir = g_dir_make_tmp("qemu-smb.XXXXXX", NULL); |
908 | if (!s->smb_dir) { | |
5c843af2 | 909 | error_setg(errp, "Could not create samba server dir"); |
68ac40d2 MM |
910 | return -1; |
911 | } | |
f95cc8b6 | 912 | smb_conf = g_strdup_printf("%s/%s", s->smb_dir, "smb.conf"); |
68ac40d2 MM |
913 | |
914 | f = fopen(smb_conf, "w"); | |
915 | if (!f) { | |
916 | slirp_smb_cleanup(s); | |
5c843af2 HP |
917 | error_setg(errp, |
918 | "Could not create samba server configuration file '%s'", | |
919 | smb_conf); | |
f95cc8b6 | 920 | g_free(smb_conf); |
68ac40d2 MM |
921 | return -1; |
922 | } | |
923 | fprintf(f, | |
924 | "[global]\n" | |
925 | "private dir=%s\n" | |
7912d04b PW |
926 | "interfaces=127.0.0.1\n" |
927 | "bind interfaces only=yes\n" | |
68ac40d2 MM |
928 | "pid directory=%s\n" |
929 | "lock directory=%s\n" | |
276eda57 | 930 | "state directory=%s\n" |
7912d04b | 931 | "cache directory=%s\n" |
b87b8a8b | 932 | "ncalrpc dir=%s/ncalrpc\n" |
68ac40d2 MM |
933 | "log file=%s/log.smbd\n" |
934 | "smb passwd file=%s/smbpasswd\n" | |
c2804ee6 MB |
935 | "security = user\n" |
936 | "map to guest = Bad User\n" | |
7912d04b PW |
937 | "load printers = no\n" |
938 | "printing = bsd\n" | |
939 | "disable spoolss = yes\n" | |
940 | "usershare max shares = 0\n" | |
68ac40d2 MM |
941 | "[qemu]\n" |
942 | "path=%s\n" | |
943 | "read only=no\n" | |
1cb1c5d1 JK |
944 | "guest ok=yes\n" |
945 | "force user=%s\n", | |
68ac40d2 MM |
946 | s->smb_dir, |
947 | s->smb_dir, | |
948 | s->smb_dir, | |
949 | s->smb_dir, | |
950 | s->smb_dir, | |
276eda57 | 951 | s->smb_dir, |
b87b8a8b | 952 | s->smb_dir, |
7912d04b | 953 | s->smb_dir, |
1cb1c5d1 JK |
954 | exported_dir, |
955 | passwd->pw_name | |
68ac40d2 MM |
956 | ); |
957 | fclose(f); | |
958 | ||
f95cc8b6 | 959 | smb_cmdline = g_strdup_printf("%s -l %s -s %s", |
44d8d2b2 | 960 | CONFIG_SMBD_COMMAND, s->smb_dir, smb_conf); |
f95cc8b6 | 961 | g_free(smb_conf); |
68ac40d2 | 962 | |
44b4ff24 MAL |
963 | if (slirp_add_exec(s->slirp, smb_cmdline, &vserver_addr, 139) < 0 || |
964 | slirp_add_exec(s->slirp, smb_cmdline, &vserver_addr, 445) < 0) { | |
68ac40d2 | 965 | slirp_smb_cleanup(s); |
f95cc8b6 | 966 | g_free(smb_cmdline); |
5c843af2 | 967 | error_setg(errp, "Conflicting/invalid smbserver address"); |
68ac40d2 MM |
968 | return -1; |
969 | } | |
f95cc8b6 | 970 | g_free(smb_cmdline); |
68ac40d2 MM |
971 | return 0; |
972 | } | |
973 | ||
35acbb30 | 974 | #endif /* defined(CONFIG_SMBD_COMMAND) */ |
68ac40d2 | 975 | |
68ac40d2 MM |
976 | static int guestfwd_can_read(void *opaque) |
977 | { | |
978 | struct GuestFwd *fwd = opaque; | |
979 | return slirp_socket_can_recv(fwd->slirp, fwd->server, fwd->port); | |
980 | } | |
981 | ||
982 | static void guestfwd_read(void *opaque, const uint8_t *buf, int size) | |
983 | { | |
984 | struct GuestFwd *fwd = opaque; | |
985 | slirp_socket_recv(fwd->slirp, fwd->server, fwd->port, buf, size); | |
986 | } | |
987 | ||
625a526b | 988 | static ssize_t guestfwd_write(const void *buf, size_t len, void *chr) |
44b4ff24 MAL |
989 | { |
990 | return qemu_chr_fe_write_all(chr, buf, len); | |
991 | } | |
992 | ||
d18572dd | 993 | static int slirp_guestfwd(SlirpState *s, const char *config_str, Error **errp) |
68ac40d2 | 994 | { |
ffe02f55 | 995 | /* TODO: IPv6 */ |
68ac40d2 MM |
996 | struct in_addr server = { .s_addr = 0 }; |
997 | struct GuestFwd *fwd; | |
998 | const char *p; | |
999 | char buf[128]; | |
1000 | char *end; | |
1001 | int port; | |
1002 | ||
1003 | p = config_str; | |
d18572dd TH |
1004 | if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) { |
1005 | goto fail_syntax; | |
1006 | } | |
1007 | if (strcmp(buf, "tcp") && buf[0] != '\0') { | |
1008 | goto fail_syntax; | |
1009 | } | |
1010 | if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) { | |
1011 | goto fail_syntax; | |
1012 | } | |
1013 | if (buf[0] != '\0' && !inet_aton(buf, &server)) { | |
1014 | goto fail_syntax; | |
1015 | } | |
1016 | if (get_str_sep(buf, sizeof(buf), &p, '-') < 0) { | |
1017 | goto fail_syntax; | |
68ac40d2 MM |
1018 | } |
1019 | port = strtol(buf, &end, 10); | |
1020 | if (*end != '\0' || port < 1 || port > 65535) { | |
1021 | goto fail_syntax; | |
1022 | } | |
1023 | ||
a9899996 | 1024 | snprintf(buf, sizeof(buf), "guestfwd.tcp.%d", port); |
68ac40d2 | 1025 | |
3624730a | 1026 | if (g_str_has_prefix(p, "cmd:")) { |
44b4ff24 | 1027 | if (slirp_add_exec(s->slirp, &p[4], &server, port) < 0) { |
5c843af2 HP |
1028 | error_setg(errp, "Conflicting/invalid host:port in guest " |
1029 | "forwarding rule '%s'", config_str); | |
b412eb61 AG |
1030 | return -1; |
1031 | } | |
1032 | } else { | |
32a6ebec | 1033 | Error *err = NULL; |
95e30b2a MAL |
1034 | /* |
1035 | * FIXME: sure we want to support implicit | |
1036 | * muxed monitors here? | |
1037 | */ | |
4ad6f6cb | 1038 | Chardev *chr = qemu_chr_new_mux_mon(buf, p, NULL); |
32a6ebec MAL |
1039 | |
1040 | if (!chr) { | |
5c843af2 HP |
1041 | error_setg(errp, "Could not open guest forwarding device '%s'", |
1042 | buf); | |
32a6ebec MAL |
1043 | return -1; |
1044 | } | |
1045 | ||
1046 | fwd = g_new(struct GuestFwd, 1); | |
1047 | qemu_chr_fe_init(&fwd->hd, chr, &err); | |
1048 | if (err) { | |
5c843af2 | 1049 | error_propagate(errp, err); |
8e207c32 | 1050 | object_unparent(OBJECT(chr)); |
b412eb61 AG |
1051 | g_free(fwd); |
1052 | return -1; | |
1053 | } | |
68ac40d2 | 1054 | |
44b4ff24 MAL |
1055 | if (slirp_add_guestfwd(s->slirp, guestfwd_write, &fwd->hd, |
1056 | &server, port) < 0) { | |
5c843af2 HP |
1057 | error_setg(errp, "Conflicting/invalid host:port in guest " |
1058 | "forwarding rule '%s'", config_str); | |
8e207c32 | 1059 | qemu_chr_fe_deinit(&fwd->hd, true); |
b412eb61 AG |
1060 | g_free(fwd); |
1061 | return -1; | |
1062 | } | |
1063 | fwd->server = server; | |
1064 | fwd->port = port; | |
1065 | fwd->slirp = s->slirp; | |
1066 | ||
5345fdb4 | 1067 | qemu_chr_fe_set_handlers(&fwd->hd, guestfwd_can_read, guestfwd_read, |
81517ba3 | 1068 | NULL, NULL, fwd, NULL, true); |
8d45a3b9 | 1069 | s->fwd = g_slist_append(s->fwd, fwd); |
b412eb61 | 1070 | } |
68ac40d2 MM |
1071 | return 0; |
1072 | ||
1073 | fail_syntax: | |
5c843af2 | 1074 | error_setg(errp, "Invalid guest forwarding rule '%s'", config_str); |
68ac40d2 MM |
1075 | return -1; |
1076 | } | |
1077 | ||
1ce6be24 | 1078 | void hmp_info_usernet(Monitor *mon, const QDict *qdict) |
68ac40d2 MM |
1079 | { |
1080 | SlirpState *s; | |
1081 | ||
1082 | QTAILQ_FOREACH(s, &slirp_stacks, entry) { | |
90d87a33 | 1083 | int id; |
442da403 | 1084 | bool got_hub_id = net_hub_id_for_client(&s->nc, &id) == 0; |
b7f43bf2 MAL |
1085 | char *info = slirp_connection_info(s->slirp); |
1086 | monitor_printf(mon, "Hub %d (%s):\n%s", | |
442da403 | 1087 | got_hub_id ? id : -1, |
b7f43bf2 MAL |
1088 | s->nc.name, info); |
1089 | g_free(info); | |
68ac40d2 MM |
1090 | } |
1091 | } | |
1092 | ||
094f15c5 LE |
1093 | static void |
1094 | net_init_slirp_configs(const StringList *fwd, int flags) | |
68ac40d2 | 1095 | { |
094f15c5 LE |
1096 | while (fwd) { |
1097 | struct slirp_config_str *config; | |
68ac40d2 | 1098 | |
094f15c5 LE |
1099 | config = g_malloc0(sizeof(*config)); |
1100 | pstrcpy(config->str, sizeof(config->str), fwd->value->str); | |
1101 | config->flags = flags; | |
1102 | config->next = slirp_configs; | |
1103 | slirp_configs = config; | |
68ac40d2 | 1104 | |
094f15c5 | 1105 | fwd = fwd->next; |
68ac40d2 | 1106 | } |
68ac40d2 MM |
1107 | } |
1108 | ||
63d2960b KS |
1109 | static const char **slirp_dnssearch(const StringList *dnsname) |
1110 | { | |
1111 | const StringList *c = dnsname; | |
1112 | size_t i = 0, num_opts = 0; | |
1113 | const char **ret; | |
1114 | ||
1115 | while (c) { | |
1116 | num_opts++; | |
1117 | c = c->next; | |
1118 | } | |
1119 | ||
1120 | if (num_opts == 0) { | |
1121 | return NULL; | |
1122 | } | |
1123 | ||
1124 | ret = g_malloc((num_opts + 1) * sizeof(*ret)); | |
1125 | c = dnsname; | |
1126 | while (c) { | |
1127 | ret[i++] = c->value->str; | |
1128 | c = c->next; | |
1129 | } | |
1130 | ret[i] = NULL; | |
1131 | return ret; | |
1132 | } | |
1133 | ||
cebea510 | 1134 | int net_init_slirp(const Netdev *netdev, const char *name, |
a30ecde6 | 1135 | NetClientState *peer, Error **errp) |
68ac40d2 MM |
1136 | { |
1137 | struct slirp_config_str *config; | |
094f15c5 | 1138 | char *vnet; |
68ac40d2 | 1139 | int ret; |
094f15c5 | 1140 | const NetdevUserOptions *user; |
63d2960b | 1141 | const char **dnssearch; |
0b11c036 | 1142 | bool ipv4 = true, ipv6 = true; |
68ac40d2 | 1143 | |
f394b2e2 EB |
1144 | assert(netdev->type == NET_CLIENT_DRIVER_USER); |
1145 | user = &netdev->u.user; | |
68ac40d2 | 1146 | |
0b11c036 ST |
1147 | if ((user->has_ipv6 && user->ipv6 && !user->has_ipv4) || |
1148 | (user->has_ipv4 && !user->ipv4)) { | |
1149 | ipv4 = 0; | |
1150 | } | |
1151 | if ((user->has_ipv4 && user->ipv4 && !user->has_ipv6) || | |
1152 | (user->has_ipv6 && !user->ipv6)) { | |
1153 | ipv6 = 0; | |
1154 | } | |
1155 | ||
7480874a MA |
1156 | vnet = user->net ? g_strdup(user->net) : |
1157 | user->ip ? g_strdup_printf("%s/24", user->ip) : | |
094f15c5 | 1158 | NULL; |
68ac40d2 | 1159 | |
63d2960b KS |
1160 | dnssearch = slirp_dnssearch(user->dnssearch); |
1161 | ||
094f15c5 | 1162 | /* all optional fields are initialized to "all bits zero" */ |
68ac40d2 | 1163 | |
094f15c5 LE |
1164 | net_init_slirp_configs(user->hostfwd, SLIRP_CFG_HOSTFWD); |
1165 | net_init_slirp_configs(user->guestfwd, 0); | |
68ac40d2 | 1166 | |
0b11c036 ST |
1167 | ret = net_slirp_init(peer, "user", name, user->q_restrict, |
1168 | ipv4, vnet, user->host, | |
1169 | ipv6, user->ipv6_prefix, user->ipv6_prefixlen, | |
d8eb3864 | 1170 | user->ipv6_host, user->hostname, user->tftp, |
7aac531e | 1171 | user->bootfile, user->dhcpstart, |
d8eb3864 | 1172 | user->dns, user->ipv6_dns, user->smb, |
0fca92b9 FZ |
1173 | user->smbserver, dnssearch, user->domainname, |
1174 | user->tftp_server_name, errp); | |
68ac40d2 MM |
1175 | |
1176 | while (slirp_configs) { | |
1177 | config = slirp_configs; | |
1178 | slirp_configs = config->next; | |
7267c094 | 1179 | g_free(config); |
68ac40d2 MM |
1180 | } |
1181 | ||
7267c094 | 1182 | g_free(vnet); |
63d2960b | 1183 | g_free(dnssearch); |
68ac40d2 MM |
1184 | |
1185 | return ret; | |
1186 | } |