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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 | 28 | #ifndef _WIN32 |
1cb1c5d1 | 29 | #include <pwd.h> |
28b150bf BS |
30 | #include <sys/wait.h> |
31 | #endif | |
68ac40d2 MM |
32 | #include "net.h" |
33 | #include "monitor.h" | |
68ac40d2 MM |
34 | #include "qemu_socket.h" |
35 | #include "slirp/libslirp.h" | |
36 | ||
37 | static int get_str_sep(char *buf, int buf_size, const char **pp, int sep) | |
38 | { | |
39 | const char *p, *p1; | |
40 | int len; | |
41 | p = *pp; | |
42 | p1 = strchr(p, sep); | |
43 | if (!p1) | |
44 | return -1; | |
45 | len = p1 - p; | |
46 | p1++; | |
47 | if (buf_size > 0) { | |
48 | if (len > buf_size - 1) | |
49 | len = buf_size - 1; | |
50 | memcpy(buf, p, len); | |
51 | buf[len] = '\0'; | |
52 | } | |
53 | *pp = p1; | |
54 | return 0; | |
55 | } | |
56 | ||
57 | /* slirp network adapter */ | |
58 | ||
59 | #define SLIRP_CFG_HOSTFWD 1 | |
60 | #define SLIRP_CFG_LEGACY 2 | |
61 | ||
62 | struct slirp_config_str { | |
63 | struct slirp_config_str *next; | |
64 | int flags; | |
65 | char str[1024]; | |
66 | int legacy_format; | |
67 | }; | |
68 | ||
69 | typedef struct SlirpState { | |
ce20b5be | 70 | VLANClientState nc; |
68ac40d2 | 71 | QTAILQ_ENTRY(SlirpState) entry; |
68ac40d2 MM |
72 | Slirp *slirp; |
73 | #ifndef _WIN32 | |
74 | char smb_dir[128]; | |
75 | #endif | |
76 | } SlirpState; | |
77 | ||
78 | static struct slirp_config_str *slirp_configs; | |
79 | const char *legacy_tftp_prefix; | |
80 | const char *legacy_bootp_filename; | |
81 | static QTAILQ_HEAD(slirp_stacks, SlirpState) slirp_stacks = | |
82 | QTAILQ_HEAD_INITIALIZER(slirp_stacks); | |
83 | ||
84 | static int slirp_hostfwd(SlirpState *s, const char *redir_str, | |
85 | int legacy_format); | |
86 | static int slirp_guestfwd(SlirpState *s, const char *config_str, | |
87 | int legacy_format); | |
88 | ||
89 | #ifndef _WIN32 | |
90 | static const char *legacy_smb_export; | |
91 | ||
92 | static int slirp_smb(SlirpState *s, const char *exported_dir, | |
93 | struct in_addr vserver_addr); | |
94 | static void slirp_smb_cleanup(SlirpState *s); | |
95 | #else | |
96 | static inline void slirp_smb_cleanup(SlirpState *s) { } | |
97 | #endif | |
98 | ||
99 | int slirp_can_output(void *opaque) | |
100 | { | |
101 | SlirpState *s = opaque; | |
102 | ||
ce20b5be | 103 | return qemu_can_send_packet(&s->nc); |
68ac40d2 MM |
104 | } |
105 | ||
106 | void slirp_output(void *opaque, const uint8_t *pkt, int pkt_len) | |
107 | { | |
108 | SlirpState *s = opaque; | |
109 | ||
ce20b5be | 110 | qemu_send_packet(&s->nc, pkt, pkt_len); |
68ac40d2 MM |
111 | } |
112 | ||
ce20b5be | 113 | static ssize_t net_slirp_receive(VLANClientState *nc, const uint8_t *buf, size_t size) |
68ac40d2 | 114 | { |
ce20b5be | 115 | SlirpState *s = DO_UPCAST(SlirpState, nc, nc); |
68ac40d2 MM |
116 | |
117 | slirp_input(s->slirp, buf, size); | |
118 | ||
119 | return size; | |
120 | } | |
121 | ||
ce20b5be | 122 | static void net_slirp_cleanup(VLANClientState *nc) |
68ac40d2 | 123 | { |
ce20b5be | 124 | SlirpState *s = DO_UPCAST(SlirpState, nc, nc); |
68ac40d2 MM |
125 | |
126 | slirp_cleanup(s->slirp); | |
127 | slirp_smb_cleanup(s); | |
128 | QTAILQ_REMOVE(&slirp_stacks, s, entry); | |
68ac40d2 MM |
129 | } |
130 | ||
ce20b5be | 131 | static NetClientInfo net_slirp_info = { |
6f7b3b1b | 132 | .type = NET_CLIENT_TYPE_USER, |
ce20b5be MM |
133 | .size = sizeof(SlirpState), |
134 | .receive = net_slirp_receive, | |
135 | .cleanup = net_slirp_cleanup, | |
136 | }; | |
137 | ||
68ac40d2 MM |
138 | static int net_slirp_init(VLANState *vlan, const char *model, |
139 | const char *name, int restricted, | |
140 | const char *vnetwork, const char *vhost, | |
141 | const char *vhostname, const char *tftp_export, | |
142 | const char *bootfile, const char *vdhcp_start, | |
143 | const char *vnameserver, const char *smb_export, | |
144 | const char *vsmbserver) | |
145 | { | |
146 | /* default settings according to historic slirp */ | |
147 | struct in_addr net = { .s_addr = htonl(0x0a000200) }; /* 10.0.2.0 */ | |
148 | struct in_addr mask = { .s_addr = htonl(0xffffff00) }; /* 255.255.255.0 */ | |
149 | struct in_addr host = { .s_addr = htonl(0x0a000202) }; /* 10.0.2.2 */ | |
150 | struct in_addr dhcp = { .s_addr = htonl(0x0a00020f) }; /* 10.0.2.15 */ | |
151 | struct in_addr dns = { .s_addr = htonl(0x0a000203) }; /* 10.0.2.3 */ | |
152 | #ifndef _WIN32 | |
153 | struct in_addr smbsrv = { .s_addr = 0 }; | |
154 | #endif | |
ce20b5be | 155 | VLANClientState *nc; |
68ac40d2 MM |
156 | SlirpState *s; |
157 | char buf[20]; | |
158 | uint32_t addr; | |
159 | int shift; | |
160 | char *end; | |
161 | struct slirp_config_str *config; | |
162 | ||
163 | if (!tftp_export) { | |
164 | tftp_export = legacy_tftp_prefix; | |
165 | } | |
166 | if (!bootfile) { | |
167 | bootfile = legacy_bootp_filename; | |
168 | } | |
169 | ||
170 | if (vnetwork) { | |
171 | if (get_str_sep(buf, sizeof(buf), &vnetwork, '/') < 0) { | |
172 | if (!inet_aton(vnetwork, &net)) { | |
173 | return -1; | |
174 | } | |
175 | addr = ntohl(net.s_addr); | |
176 | if (!(addr & 0x80000000)) { | |
177 | mask.s_addr = htonl(0xff000000); /* class A */ | |
178 | } else if ((addr & 0xfff00000) == 0xac100000) { | |
179 | mask.s_addr = htonl(0xfff00000); /* priv. 172.16.0.0/12 */ | |
180 | } else if ((addr & 0xc0000000) == 0x80000000) { | |
181 | mask.s_addr = htonl(0xffff0000); /* class B */ | |
182 | } else if ((addr & 0xffff0000) == 0xc0a80000) { | |
183 | mask.s_addr = htonl(0xffff0000); /* priv. 192.168.0.0/16 */ | |
184 | } else if ((addr & 0xffff0000) == 0xc6120000) { | |
185 | mask.s_addr = htonl(0xfffe0000); /* tests 198.18.0.0/15 */ | |
186 | } else if ((addr & 0xe0000000) == 0xe0000000) { | |
187 | mask.s_addr = htonl(0xffffff00); /* class C */ | |
188 | } else { | |
189 | mask.s_addr = htonl(0xfffffff0); /* multicast/reserved */ | |
190 | } | |
191 | } else { | |
192 | if (!inet_aton(buf, &net)) { | |
193 | return -1; | |
194 | } | |
195 | shift = strtol(vnetwork, &end, 10); | |
196 | if (*end != '\0') { | |
197 | if (!inet_aton(vnetwork, &mask)) { | |
198 | return -1; | |
199 | } | |
200 | } else if (shift < 4 || shift > 32) { | |
201 | return -1; | |
202 | } else { | |
203 | mask.s_addr = htonl(0xffffffff << (32 - shift)); | |
204 | } | |
205 | } | |
206 | net.s_addr &= mask.s_addr; | |
207 | host.s_addr = net.s_addr | (htonl(0x0202) & ~mask.s_addr); | |
208 | dhcp.s_addr = net.s_addr | (htonl(0x020f) & ~mask.s_addr); | |
209 | dns.s_addr = net.s_addr | (htonl(0x0203) & ~mask.s_addr); | |
210 | } | |
211 | ||
212 | if (vhost && !inet_aton(vhost, &host)) { | |
213 | return -1; | |
214 | } | |
215 | if ((host.s_addr & mask.s_addr) != net.s_addr) { | |
216 | return -1; | |
217 | } | |
218 | ||
219 | if (vdhcp_start && !inet_aton(vdhcp_start, &dhcp)) { | |
220 | return -1; | |
221 | } | |
222 | if ((dhcp.s_addr & mask.s_addr) != net.s_addr || | |
223 | dhcp.s_addr == host.s_addr || dhcp.s_addr == dns.s_addr) { | |
224 | return -1; | |
225 | } | |
226 | ||
227 | if (vnameserver && !inet_aton(vnameserver, &dns)) { | |
228 | return -1; | |
229 | } | |
230 | if ((dns.s_addr & mask.s_addr) != net.s_addr || | |
231 | dns.s_addr == host.s_addr) { | |
232 | return -1; | |
233 | } | |
234 | ||
235 | #ifndef _WIN32 | |
236 | if (vsmbserver && !inet_aton(vsmbserver, &smbsrv)) { | |
237 | return -1; | |
238 | } | |
239 | #endif | |
240 | ||
ce20b5be MM |
241 | nc = qemu_new_net_client(&net_slirp_info, vlan, NULL, model, name); |
242 | ||
243 | snprintf(nc->info_str, sizeof(nc->info_str), | |
c54ed5bc JK |
244 | "net=%s,restrict=%s", inet_ntoa(net), |
245 | restricted ? "on" : "off"); | |
ce20b5be MM |
246 | |
247 | s = DO_UPCAST(SlirpState, nc, nc); | |
248 | ||
68ac40d2 MM |
249 | s->slirp = slirp_init(restricted, net, mask, host, vhostname, |
250 | tftp_export, bootfile, dhcp, dns, s); | |
251 | QTAILQ_INSERT_TAIL(&slirp_stacks, s, entry); | |
252 | ||
253 | for (config = slirp_configs; config; config = config->next) { | |
254 | if (config->flags & SLIRP_CFG_HOSTFWD) { | |
255 | if (slirp_hostfwd(s, config->str, | |
256 | config->flags & SLIRP_CFG_LEGACY) < 0) | |
ce20b5be | 257 | goto error; |
68ac40d2 MM |
258 | } else { |
259 | if (slirp_guestfwd(s, config->str, | |
260 | config->flags & SLIRP_CFG_LEGACY) < 0) | |
ce20b5be | 261 | goto error; |
68ac40d2 MM |
262 | } |
263 | } | |
264 | #ifndef _WIN32 | |
265 | if (!smb_export) { | |
266 | smb_export = legacy_smb_export; | |
267 | } | |
268 | if (smb_export) { | |
269 | if (slirp_smb(s, smb_export, smbsrv) < 0) | |
ce20b5be | 270 | goto error; |
68ac40d2 MM |
271 | } |
272 | #endif | |
273 | ||
68ac40d2 | 274 | return 0; |
ce20b5be MM |
275 | |
276 | error: | |
277 | qemu_del_vlan_client(nc); | |
278 | return -1; | |
68ac40d2 MM |
279 | } |
280 | ||
281 | static SlirpState *slirp_lookup(Monitor *mon, const char *vlan, | |
282 | const char *stack) | |
283 | { | |
68ac40d2 MM |
284 | |
285 | if (vlan) { | |
ce20b5be MM |
286 | VLANClientState *nc; |
287 | nc = qemu_find_vlan_client_by_name(mon, strtol(vlan, NULL, 0), stack); | |
288 | if (!nc) { | |
68ac40d2 MM |
289 | return NULL; |
290 | } | |
ce20b5be | 291 | if (strcmp(nc->model, "user")) { |
68ac40d2 MM |
292 | monitor_printf(mon, "invalid device specified\n"); |
293 | return NULL; | |
294 | } | |
ce20b5be | 295 | return DO_UPCAST(SlirpState, nc, nc); |
68ac40d2 MM |
296 | } else { |
297 | if (QTAILQ_EMPTY(&slirp_stacks)) { | |
298 | monitor_printf(mon, "user mode network stack not in use\n"); | |
299 | return NULL; | |
300 | } | |
301 | return QTAILQ_FIRST(&slirp_stacks); | |
302 | } | |
303 | } | |
304 | ||
305 | void net_slirp_hostfwd_remove(Monitor *mon, const QDict *qdict) | |
306 | { | |
307 | struct in_addr host_addr = { .s_addr = INADDR_ANY }; | |
308 | int host_port; | |
e30e5eb6 | 309 | char buf[256]; |
68ac40d2 MM |
310 | const char *src_str, *p; |
311 | SlirpState *s; | |
312 | int is_udp = 0; | |
313 | int err; | |
314 | const char *arg1 = qdict_get_str(qdict, "arg1"); | |
315 | const char *arg2 = qdict_get_try_str(qdict, "arg2"); | |
316 | const char *arg3 = qdict_get_try_str(qdict, "arg3"); | |
317 | ||
318 | if (arg2) { | |
319 | s = slirp_lookup(mon, arg1, arg2); | |
320 | src_str = arg3; | |
321 | } else { | |
322 | s = slirp_lookup(mon, NULL, NULL); | |
323 | src_str = arg1; | |
324 | } | |
325 | if (!s) { | |
326 | return; | |
327 | } | |
328 | ||
68ac40d2 | 329 | p = src_str; |
e30e5eb6 MA |
330 | if (!p || get_str_sep(buf, sizeof(buf), &p, ':') < 0) { |
331 | goto fail_syntax; | |
332 | } | |
68ac40d2 MM |
333 | |
334 | if (!strcmp(buf, "tcp") || buf[0] == '\0') { | |
335 | is_udp = 0; | |
336 | } else if (!strcmp(buf, "udp")) { | |
337 | is_udp = 1; | |
338 | } else { | |
339 | goto fail_syntax; | |
340 | } | |
341 | ||
342 | if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) { | |
343 | goto fail_syntax; | |
344 | } | |
345 | if (buf[0] != '\0' && !inet_aton(buf, &host_addr)) { | |
346 | goto fail_syntax; | |
347 | } | |
348 | ||
349 | host_port = atoi(p); | |
350 | ||
351 | err = slirp_remove_hostfwd(QTAILQ_FIRST(&slirp_stacks)->slirp, is_udp, | |
352 | host_addr, host_port); | |
353 | ||
354 | monitor_printf(mon, "host forwarding rule for %s %s\n", src_str, | |
b15ba6c9 | 355 | err ? "not found" : "removed"); |
68ac40d2 MM |
356 | return; |
357 | ||
358 | fail_syntax: | |
359 | monitor_printf(mon, "invalid format\n"); | |
360 | } | |
361 | ||
362 | static int slirp_hostfwd(SlirpState *s, const char *redir_str, | |
363 | int legacy_format) | |
364 | { | |
365 | struct in_addr host_addr = { .s_addr = INADDR_ANY }; | |
366 | struct in_addr guest_addr = { .s_addr = 0 }; | |
367 | int host_port, guest_port; | |
368 | const char *p; | |
369 | char buf[256]; | |
370 | int is_udp; | |
371 | char *end; | |
372 | ||
373 | p = redir_str; | |
374 | if (!p || get_str_sep(buf, sizeof(buf), &p, ':') < 0) { | |
375 | goto fail_syntax; | |
376 | } | |
377 | if (!strcmp(buf, "tcp") || buf[0] == '\0') { | |
378 | is_udp = 0; | |
379 | } else if (!strcmp(buf, "udp")) { | |
380 | is_udp = 1; | |
381 | } else { | |
382 | goto fail_syntax; | |
383 | } | |
384 | ||
385 | if (!legacy_format) { | |
386 | if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) { | |
387 | goto fail_syntax; | |
388 | } | |
389 | if (buf[0] != '\0' && !inet_aton(buf, &host_addr)) { | |
390 | goto fail_syntax; | |
391 | } | |
392 | } | |
393 | ||
394 | if (get_str_sep(buf, sizeof(buf), &p, legacy_format ? ':' : '-') < 0) { | |
395 | goto fail_syntax; | |
396 | } | |
397 | host_port = strtol(buf, &end, 0); | |
398 | if (*end != '\0' || host_port < 1 || host_port > 65535) { | |
399 | goto fail_syntax; | |
400 | } | |
401 | ||
402 | if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) { | |
403 | goto fail_syntax; | |
404 | } | |
405 | if (buf[0] != '\0' && !inet_aton(buf, &guest_addr)) { | |
406 | goto fail_syntax; | |
407 | } | |
408 | ||
409 | guest_port = strtol(p, &end, 0); | |
410 | if (*end != '\0' || guest_port < 1 || guest_port > 65535) { | |
411 | goto fail_syntax; | |
412 | } | |
413 | ||
414 | if (slirp_add_hostfwd(s->slirp, is_udp, host_addr, host_port, guest_addr, | |
415 | guest_port) < 0) { | |
1ecda02b MA |
416 | error_report("could not set up host forwarding rule '%s'", |
417 | redir_str); | |
68ac40d2 MM |
418 | return -1; |
419 | } | |
420 | return 0; | |
421 | ||
422 | fail_syntax: | |
1ecda02b | 423 | error_report("invalid host forwarding rule '%s'", redir_str); |
68ac40d2 MM |
424 | return -1; |
425 | } | |
426 | ||
427 | void net_slirp_hostfwd_add(Monitor *mon, const QDict *qdict) | |
428 | { | |
429 | const char *redir_str; | |
430 | SlirpState *s; | |
431 | const char *arg1 = qdict_get_str(qdict, "arg1"); | |
432 | const char *arg2 = qdict_get_try_str(qdict, "arg2"); | |
433 | const char *arg3 = qdict_get_try_str(qdict, "arg3"); | |
434 | ||
435 | if (arg2) { | |
436 | s = slirp_lookup(mon, arg1, arg2); | |
437 | redir_str = arg3; | |
438 | } else { | |
439 | s = slirp_lookup(mon, NULL, NULL); | |
440 | redir_str = arg1; | |
441 | } | |
442 | if (s) { | |
443 | slirp_hostfwd(s, redir_str, 0); | |
444 | } | |
445 | ||
446 | } | |
447 | ||
448 | int net_slirp_redir(const char *redir_str) | |
449 | { | |
450 | struct slirp_config_str *config; | |
451 | ||
452 | if (QTAILQ_EMPTY(&slirp_stacks)) { | |
7267c094 | 453 | config = g_malloc(sizeof(*config)); |
68ac40d2 MM |
454 | pstrcpy(config->str, sizeof(config->str), redir_str); |
455 | config->flags = SLIRP_CFG_HOSTFWD | SLIRP_CFG_LEGACY; | |
456 | config->next = slirp_configs; | |
457 | slirp_configs = config; | |
458 | return 0; | |
459 | } | |
460 | ||
461 | return slirp_hostfwd(QTAILQ_FIRST(&slirp_stacks), redir_str, 1); | |
462 | } | |
463 | ||
464 | #ifndef _WIN32 | |
465 | ||
466 | /* automatic user mode samba server configuration */ | |
467 | static void slirp_smb_cleanup(SlirpState *s) | |
468 | { | |
469 | char cmd[128]; | |
5a01e99f | 470 | int ret; |
68ac40d2 MM |
471 | |
472 | if (s->smb_dir[0] != '\0') { | |
473 | snprintf(cmd, sizeof(cmd), "rm -rf %s", s->smb_dir); | |
5a01e99f | 474 | ret = system(cmd); |
24ac07de | 475 | if (ret == -1 || !WIFEXITED(ret)) { |
1ecda02b | 476 | error_report("'%s' failed.", cmd); |
5a01e99f | 477 | } else if (WEXITSTATUS(ret)) { |
1ecda02b MA |
478 | error_report("'%s' failed. Error code: %d", |
479 | cmd, WEXITSTATUS(ret)); | |
5a01e99f | 480 | } |
68ac40d2 MM |
481 | s->smb_dir[0] = '\0'; |
482 | } | |
483 | } | |
484 | ||
485 | static int slirp_smb(SlirpState* s, const char *exported_dir, | |
486 | struct in_addr vserver_addr) | |
487 | { | |
488 | static int instance; | |
489 | char smb_conf[128]; | |
490 | char smb_cmdline[128]; | |
1cb1c5d1 | 491 | struct passwd *passwd; |
68ac40d2 MM |
492 | FILE *f; |
493 | ||
1cb1c5d1 JK |
494 | passwd = getpwuid(geteuid()); |
495 | if (!passwd) { | |
496 | error_report("failed to retrieve user name"); | |
497 | return -1; | |
498 | } | |
499 | ||
68ac40d2 MM |
500 | snprintf(s->smb_dir, sizeof(s->smb_dir), "/tmp/qemu-smb.%ld-%d", |
501 | (long)getpid(), instance++); | |
502 | if (mkdir(s->smb_dir, 0700) < 0) { | |
1ecda02b | 503 | error_report("could not create samba server dir '%s'", s->smb_dir); |
68ac40d2 MM |
504 | return -1; |
505 | } | |
506 | snprintf(smb_conf, sizeof(smb_conf), "%s/%s", s->smb_dir, "smb.conf"); | |
507 | ||
508 | f = fopen(smb_conf, "w"); | |
509 | if (!f) { | |
510 | slirp_smb_cleanup(s); | |
1ecda02b MA |
511 | error_report("could not create samba server configuration file '%s'", |
512 | smb_conf); | |
68ac40d2 MM |
513 | return -1; |
514 | } | |
515 | fprintf(f, | |
516 | "[global]\n" | |
517 | "private dir=%s\n" | |
68ac40d2 MM |
518 | "socket address=127.0.0.1\n" |
519 | "pid directory=%s\n" | |
520 | "lock directory=%s\n" | |
276eda57 | 521 | "state directory=%s\n" |
68ac40d2 MM |
522 | "log file=%s/log.smbd\n" |
523 | "smb passwd file=%s/smbpasswd\n" | |
524 | "security = share\n" | |
525 | "[qemu]\n" | |
526 | "path=%s\n" | |
527 | "read only=no\n" | |
1cb1c5d1 JK |
528 | "guest ok=yes\n" |
529 | "force user=%s\n", | |
68ac40d2 MM |
530 | s->smb_dir, |
531 | s->smb_dir, | |
532 | s->smb_dir, | |
533 | s->smb_dir, | |
534 | s->smb_dir, | |
276eda57 | 535 | s->smb_dir, |
1cb1c5d1 JK |
536 | exported_dir, |
537 | passwd->pw_name | |
68ac40d2 MM |
538 | ); |
539 | fclose(f); | |
540 | ||
541 | snprintf(smb_cmdline, sizeof(smb_cmdline), "%s -s %s", | |
e2d8830e | 542 | CONFIG_SMBD_COMMAND, smb_conf); |
68ac40d2 MM |
543 | |
544 | if (slirp_add_exec(s->slirp, 0, smb_cmdline, &vserver_addr, 139) < 0) { | |
545 | slirp_smb_cleanup(s); | |
1ecda02b | 546 | error_report("conflicting/invalid smbserver address"); |
68ac40d2 MM |
547 | return -1; |
548 | } | |
549 | return 0; | |
550 | } | |
551 | ||
552 | /* automatic user mode samba server configuration (legacy interface) */ | |
553 | int net_slirp_smb(const char *exported_dir) | |
554 | { | |
555 | struct in_addr vserver_addr = { .s_addr = 0 }; | |
556 | ||
557 | if (legacy_smb_export) { | |
558 | fprintf(stderr, "-smb given twice\n"); | |
559 | return -1; | |
560 | } | |
561 | legacy_smb_export = exported_dir; | |
562 | if (!QTAILQ_EMPTY(&slirp_stacks)) { | |
563 | return slirp_smb(QTAILQ_FIRST(&slirp_stacks), exported_dir, | |
564 | vserver_addr); | |
565 | } | |
566 | return 0; | |
567 | } | |
568 | ||
569 | #endif /* !defined(_WIN32) */ | |
570 | ||
571 | struct GuestFwd { | |
572 | CharDriverState *hd; | |
573 | struct in_addr server; | |
574 | int port; | |
575 | Slirp *slirp; | |
576 | }; | |
577 | ||
578 | static int guestfwd_can_read(void *opaque) | |
579 | { | |
580 | struct GuestFwd *fwd = opaque; | |
581 | return slirp_socket_can_recv(fwd->slirp, fwd->server, fwd->port); | |
582 | } | |
583 | ||
584 | static void guestfwd_read(void *opaque, const uint8_t *buf, int size) | |
585 | { | |
586 | struct GuestFwd *fwd = opaque; | |
587 | slirp_socket_recv(fwd->slirp, fwd->server, fwd->port, buf, size); | |
588 | } | |
589 | ||
590 | static int slirp_guestfwd(SlirpState *s, const char *config_str, | |
591 | int legacy_format) | |
592 | { | |
593 | struct in_addr server = { .s_addr = 0 }; | |
594 | struct GuestFwd *fwd; | |
595 | const char *p; | |
596 | char buf[128]; | |
597 | char *end; | |
598 | int port; | |
599 | ||
600 | p = config_str; | |
601 | if (legacy_format) { | |
602 | if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) { | |
603 | goto fail_syntax; | |
604 | } | |
605 | } else { | |
606 | if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) { | |
607 | goto fail_syntax; | |
608 | } | |
609 | if (strcmp(buf, "tcp") && buf[0] != '\0') { | |
610 | goto fail_syntax; | |
611 | } | |
612 | if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) { | |
613 | goto fail_syntax; | |
614 | } | |
615 | if (buf[0] != '\0' && !inet_aton(buf, &server)) { | |
616 | goto fail_syntax; | |
617 | } | |
618 | if (get_str_sep(buf, sizeof(buf), &p, '-') < 0) { | |
619 | goto fail_syntax; | |
620 | } | |
621 | } | |
622 | port = strtol(buf, &end, 10); | |
623 | if (*end != '\0' || port < 1 || port > 65535) { | |
624 | goto fail_syntax; | |
625 | } | |
626 | ||
7267c094 | 627 | fwd = g_malloc(sizeof(struct GuestFwd)); |
a9899996 | 628 | snprintf(buf, sizeof(buf), "guestfwd.tcp.%d", port); |
68ac40d2 | 629 | |
b412eb61 AG |
630 | if ((strlen(p) > 4) && !strncmp(p, "cmd:", 4)) { |
631 | if (slirp_add_exec(s->slirp, 0, &p[4], &server, port) < 0) { | |
632 | error_report("conflicting/invalid host:port in guest forwarding " | |
633 | "rule '%s'", config_str); | |
634 | g_free(fwd); | |
635 | return -1; | |
636 | } | |
637 | } else { | |
638 | fwd->hd = qemu_chr_new(buf, p, NULL); | |
639 | if (!fwd->hd) { | |
640 | error_report("could not open guest forwarding device '%s'", buf); | |
641 | g_free(fwd); | |
642 | return -1; | |
643 | } | |
68ac40d2 | 644 | |
b412eb61 AG |
645 | if (slirp_add_exec(s->slirp, 3, fwd->hd, &server, port) < 0) { |
646 | error_report("conflicting/invalid host:port in guest forwarding " | |
647 | "rule '%s'", config_str); | |
648 | g_free(fwd); | |
649 | return -1; | |
650 | } | |
651 | fwd->server = server; | |
652 | fwd->port = port; | |
653 | fwd->slirp = s->slirp; | |
654 | ||
655 | qemu_chr_add_handlers(fwd->hd, guestfwd_can_read, guestfwd_read, | |
656 | NULL, fwd); | |
657 | } | |
68ac40d2 MM |
658 | return 0; |
659 | ||
660 | fail_syntax: | |
1ecda02b | 661 | error_report("invalid guest forwarding rule '%s'", config_str); |
68ac40d2 MM |
662 | return -1; |
663 | } | |
664 | ||
665 | void do_info_usernet(Monitor *mon) | |
666 | { | |
667 | SlirpState *s; | |
668 | ||
669 | QTAILQ_FOREACH(s, &slirp_stacks, entry) { | |
ce20b5be MM |
670 | monitor_printf(mon, "VLAN %d (%s):\n", |
671 | s->nc.vlan ? s->nc.vlan->id : -1, | |
672 | s->nc.name); | |
68ac40d2 MM |
673 | slirp_connection_info(s->slirp, mon); |
674 | } | |
675 | } | |
676 | ||
677 | static int net_init_slirp_configs(const char *name, const char *value, void *opaque) | |
678 | { | |
679 | struct slirp_config_str *config; | |
680 | ||
681 | if (strcmp(name, "hostfwd") != 0 && strcmp(name, "guestfwd") != 0) { | |
682 | return 0; | |
683 | } | |
684 | ||
7267c094 | 685 | config = g_malloc0(sizeof(*config)); |
68ac40d2 MM |
686 | |
687 | pstrcpy(config->str, sizeof(config->str), value); | |
688 | ||
689 | if (!strcmp(name, "hostfwd")) { | |
690 | config->flags = SLIRP_CFG_HOSTFWD; | |
691 | } | |
692 | ||
693 | config->next = slirp_configs; | |
694 | slirp_configs = config; | |
695 | ||
696 | return 0; | |
697 | } | |
698 | ||
42dcc547 | 699 | int net_init_slirp(QemuOpts *opts, const char *name, VLANState *vlan) |
68ac40d2 MM |
700 | { |
701 | struct slirp_config_str *config; | |
702 | const char *vhost; | |
703 | const char *vhostname; | |
704 | const char *vdhcp_start; | |
705 | const char *vnamesrv; | |
706 | const char *tftp_export; | |
707 | const char *bootfile; | |
708 | const char *smb_export; | |
709 | const char *vsmbsrv; | |
c54ed5bc | 710 | const char *restrict_opt; |
68ac40d2 MM |
711 | char *vnet = NULL; |
712 | int restricted = 0; | |
713 | int ret; | |
714 | ||
715 | vhost = qemu_opt_get(opts, "host"); | |
716 | vhostname = qemu_opt_get(opts, "hostname"); | |
717 | vdhcp_start = qemu_opt_get(opts, "dhcpstart"); | |
718 | vnamesrv = qemu_opt_get(opts, "dns"); | |
719 | tftp_export = qemu_opt_get(opts, "tftp"); | |
720 | bootfile = qemu_opt_get(opts, "bootfile"); | |
721 | smb_export = qemu_opt_get(opts, "smb"); | |
722 | vsmbsrv = qemu_opt_get(opts, "smbserver"); | |
723 | ||
c54ed5bc JK |
724 | restrict_opt = qemu_opt_get(opts, "restrict"); |
725 | if (restrict_opt) { | |
726 | if (!strcmp(restrict_opt, "on") || | |
727 | !strcmp(restrict_opt, "yes") || !strcmp(restrict_opt, "y")) { | |
728 | restricted = 1; | |
729 | } else if (strcmp(restrict_opt, "off") && | |
730 | strcmp(restrict_opt, "no") && strcmp(restrict_opt, "n")) { | |
731 | error_report("invalid option: 'restrict=%s'", restrict_opt); | |
732 | return -1; | |
733 | } | |
734 | } | |
735 | ||
68ac40d2 MM |
736 | if (qemu_opt_get(opts, "ip")) { |
737 | const char *ip = qemu_opt_get(opts, "ip"); | |
738 | int l = strlen(ip) + strlen("/24") + 1; | |
739 | ||
7267c094 | 740 | vnet = g_malloc(l); |
68ac40d2 MM |
741 | |
742 | /* emulate legacy ip= parameter */ | |
743 | pstrcpy(vnet, l, ip); | |
744 | pstrcat(vnet, l, "/24"); | |
745 | } | |
746 | ||
747 | if (qemu_opt_get(opts, "net")) { | |
748 | if (vnet) { | |
7267c094 | 749 | g_free(vnet); |
68ac40d2 | 750 | } |
7267c094 | 751 | vnet = g_strdup(qemu_opt_get(opts, "net")); |
68ac40d2 MM |
752 | } |
753 | ||
68ac40d2 MM |
754 | qemu_opt_foreach(opts, net_init_slirp_configs, NULL, 0); |
755 | ||
756 | ret = net_slirp_init(vlan, "user", name, restricted, vnet, vhost, | |
757 | vhostname, tftp_export, bootfile, vdhcp_start, | |
758 | vnamesrv, smb_export, vsmbsrv); | |
759 | ||
760 | while (slirp_configs) { | |
761 | config = slirp_configs; | |
762 | slirp_configs = config->next; | |
7267c094 | 763 | g_free(config); |
68ac40d2 MM |
764 | } |
765 | ||
7267c094 | 766 | g_free(vnet); |
68ac40d2 MM |
767 | |
768 | return ret; | |
769 | } | |
770 | ||
771 | int net_slirp_parse_legacy(QemuOptsList *opts_list, const char *optarg, int *ret) | |
772 | { | |
773 | if (strcmp(opts_list->name, "net") != 0 || | |
774 | strncmp(optarg, "channel,", strlen("channel,")) != 0) { | |
775 | return 0; | |
776 | } | |
777 | ||
778 | /* handle legacy -net channel,port:chr */ | |
779 | optarg += strlen("channel,"); | |
780 | ||
781 | if (QTAILQ_EMPTY(&slirp_stacks)) { | |
782 | struct slirp_config_str *config; | |
783 | ||
7267c094 | 784 | config = g_malloc(sizeof(*config)); |
68ac40d2 MM |
785 | pstrcpy(config->str, sizeof(config->str), optarg); |
786 | config->flags = SLIRP_CFG_LEGACY; | |
787 | config->next = slirp_configs; | |
788 | slirp_configs = config; | |
789 | *ret = 0; | |
790 | } else { | |
791 | *ret = slirp_guestfwd(QTAILQ_FIRST(&slirp_stacks), optarg, 1); | |
792 | } | |
793 | ||
794 | return 1; | |
795 | } | |
796 |