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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" |
68ac40d2 MM |
26 | #include "net/slirp.h" |
27 | ||
68ac40d2 | 28 | |
28b150bf | 29 | #ifndef _WIN32 |
1cb1c5d1 | 30 | #include <pwd.h> |
28b150bf BS |
31 | #include <sys/wait.h> |
32 | #endif | |
1422e32d | 33 | #include "net/net.h" |
a245fc18 PB |
34 | #include "clients.h" |
35 | #include "hub.h" | |
83c9089e | 36 | #include "monitor/monitor.h" |
d49b6836 | 37 | #include "qemu/error-report.h" |
1de7afc9 | 38 | #include "qemu/sockets.h" |
68ac40d2 | 39 | #include "slirp/libslirp.h" |
7aac531e | 40 | #include "slirp/ip6.h" |
4d43a603 | 41 | #include "chardev/char-fe.h" |
f6c2e66a | 42 | #include "sysemu/sysemu.h" |
f348b6d1 | 43 | #include "qemu/cutils.h" |
32a6ebec | 44 | #include "qapi/error.h" |
452fcdbc | 45 | #include "qapi/qmp/qdict.h" |
68ac40d2 MM |
46 | |
47 | static int get_str_sep(char *buf, int buf_size, const char **pp, int sep) | |
48 | { | |
49 | const char *p, *p1; | |
50 | int len; | |
51 | p = *pp; | |
52 | p1 = strchr(p, sep); | |
53 | if (!p1) | |
54 | return -1; | |
55 | len = p1 - p; | |
56 | p1++; | |
57 | if (buf_size > 0) { | |
58 | if (len > buf_size - 1) | |
59 | len = buf_size - 1; | |
60 | memcpy(buf, p, len); | |
61 | buf[len] = '\0'; | |
62 | } | |
63 | *pp = p1; | |
64 | return 0; | |
65 | } | |
66 | ||
67 | /* slirp network adapter */ | |
68 | ||
69 | #define SLIRP_CFG_HOSTFWD 1 | |
68ac40d2 MM |
70 | |
71 | struct slirp_config_str { | |
72 | struct slirp_config_str *next; | |
73 | int flags; | |
74 | char str[1024]; | |
68ac40d2 MM |
75 | }; |
76 | ||
77 | typedef struct SlirpState { | |
4e68f7a0 | 78 | NetClientState nc; |
68ac40d2 | 79 | QTAILQ_ENTRY(SlirpState) entry; |
68ac40d2 | 80 | Slirp *slirp; |
f6c2e66a | 81 | Notifier exit_notifier; |
68ac40d2 | 82 | #ifndef _WIN32 |
f95cc8b6 | 83 | gchar *smb_dir; |
68ac40d2 MM |
84 | #endif |
85 | } SlirpState; | |
86 | ||
87 | static struct slirp_config_str *slirp_configs; | |
68ac40d2 MM |
88 | static QTAILQ_HEAD(slirp_stacks, SlirpState) slirp_stacks = |
89 | QTAILQ_HEAD_INITIALIZER(slirp_stacks); | |
90 | ||
d18572dd TH |
91 | static int slirp_hostfwd(SlirpState *s, const char *redir_str, Error **errp); |
92 | static int slirp_guestfwd(SlirpState *s, const char *config_str, Error **errp); | |
68ac40d2 MM |
93 | |
94 | #ifndef _WIN32 | |
68ac40d2 | 95 | static int slirp_smb(SlirpState *s, const char *exported_dir, |
5c843af2 | 96 | struct in_addr vserver_addr, Error **errp); |
68ac40d2 MM |
97 | static void slirp_smb_cleanup(SlirpState *s); |
98 | #else | |
99 | static inline void slirp_smb_cleanup(SlirpState *s) { } | |
100 | #endif | |
101 | ||
68ac40d2 MM |
102 | void slirp_output(void *opaque, const uint8_t *pkt, int pkt_len) |
103 | { | |
104 | SlirpState *s = opaque; | |
105 | ||
ce20b5be | 106 | qemu_send_packet(&s->nc, pkt, pkt_len); |
68ac40d2 MM |
107 | } |
108 | ||
4e68f7a0 | 109 | static ssize_t net_slirp_receive(NetClientState *nc, const uint8_t *buf, size_t size) |
68ac40d2 | 110 | { |
ce20b5be | 111 | SlirpState *s = DO_UPCAST(SlirpState, nc, nc); |
68ac40d2 MM |
112 | |
113 | slirp_input(s->slirp, buf, size); | |
114 | ||
115 | return size; | |
116 | } | |
117 | ||
f6c2e66a PB |
118 | static void slirp_smb_exit(Notifier *n, void *data) |
119 | { | |
120 | SlirpState *s = container_of(n, SlirpState, exit_notifier); | |
121 | slirp_smb_cleanup(s); | |
122 | } | |
123 | ||
4e68f7a0 | 124 | static void net_slirp_cleanup(NetClientState *nc) |
68ac40d2 | 125 | { |
ce20b5be | 126 | SlirpState *s = DO_UPCAST(SlirpState, nc, nc); |
68ac40d2 MM |
127 | |
128 | slirp_cleanup(s->slirp); | |
67f3280c MAL |
129 | if (s->exit_notifier.notify) { |
130 | qemu_remove_exit_notifier(&s->exit_notifier); | |
131 | } | |
68ac40d2 MM |
132 | slirp_smb_cleanup(s); |
133 | QTAILQ_REMOVE(&slirp_stacks, s, entry); | |
68ac40d2 MM |
134 | } |
135 | ||
ce20b5be | 136 | static NetClientInfo net_slirp_info = { |
f394b2e2 | 137 | .type = NET_CLIENT_DRIVER_USER, |
ce20b5be MM |
138 | .size = sizeof(SlirpState), |
139 | .receive = net_slirp_receive, | |
140 | .cleanup = net_slirp_cleanup, | |
141 | }; | |
142 | ||
4e68f7a0 | 143 | static int net_slirp_init(NetClientState *peer, const char *model, |
68ac40d2 | 144 | const char *name, int restricted, |
0b11c036 ST |
145 | bool ipv4, const char *vnetwork, const char *vhost, |
146 | bool ipv6, const char *vprefix6, int vprefix6_len, | |
7aac531e | 147 | const char *vhost6, |
68ac40d2 MM |
148 | const char *vhostname, const char *tftp_export, |
149 | const char *bootfile, const char *vdhcp_start, | |
7aac531e YB |
150 | const char *vnameserver, const char *vnameserver6, |
151 | const char *smb_export, const char *vsmbserver, | |
f18d1375 | 152 | const char **dnssearch, const char *vdomainname, |
0fca92b9 | 153 | const char *tftp_server_name, |
f18d1375 | 154 | Error **errp) |
68ac40d2 MM |
155 | { |
156 | /* default settings according to historic slirp */ | |
157 | struct in_addr net = { .s_addr = htonl(0x0a000200) }; /* 10.0.2.0 */ | |
158 | struct in_addr mask = { .s_addr = htonl(0xffffff00) }; /* 255.255.255.0 */ | |
159 | struct in_addr host = { .s_addr = htonl(0x0a000202) }; /* 10.0.2.2 */ | |
160 | struct in_addr dhcp = { .s_addr = htonl(0x0a00020f) }; /* 10.0.2.15 */ | |
161 | struct in_addr dns = { .s_addr = htonl(0x0a000203) }; /* 10.0.2.3 */ | |
7aac531e YB |
162 | struct in6_addr ip6_prefix; |
163 | struct in6_addr ip6_host; | |
164 | struct in6_addr ip6_dns; | |
68ac40d2 MM |
165 | #ifndef _WIN32 |
166 | struct in_addr smbsrv = { .s_addr = 0 }; | |
167 | #endif | |
4e68f7a0 | 168 | NetClientState *nc; |
68ac40d2 MM |
169 | SlirpState *s; |
170 | char buf[20]; | |
171 | uint32_t addr; | |
172 | int shift; | |
173 | char *end; | |
174 | struct slirp_config_str *config; | |
175 | ||
0b11c036 | 176 | if (!ipv4 && (vnetwork || vhost || vnameserver)) { |
5c843af2 | 177 | error_setg(errp, "IPv4 disabled but netmask/host/dns provided"); |
0b11c036 ST |
178 | return -1; |
179 | } | |
180 | ||
181 | if (!ipv6 && (vprefix6 || vhost6 || vnameserver6)) { | |
5c843af2 | 182 | error_setg(errp, "IPv6 disabled but prefix/host6/dns6 provided"); |
0b11c036 ST |
183 | return -1; |
184 | } | |
185 | ||
186 | if (!ipv4 && !ipv6) { | |
187 | /* It doesn't make sense to disable both */ | |
5c843af2 | 188 | error_setg(errp, "IPv4 and IPv6 disabled"); |
0b11c036 ST |
189 | return -1; |
190 | } | |
191 | ||
68ac40d2 MM |
192 | if (vnetwork) { |
193 | if (get_str_sep(buf, sizeof(buf), &vnetwork, '/') < 0) { | |
194 | if (!inet_aton(vnetwork, &net)) { | |
5c843af2 | 195 | error_setg(errp, "Failed to parse netmask"); |
68ac40d2 MM |
196 | return -1; |
197 | } | |
198 | addr = ntohl(net.s_addr); | |
199 | if (!(addr & 0x80000000)) { | |
200 | mask.s_addr = htonl(0xff000000); /* class A */ | |
201 | } else if ((addr & 0xfff00000) == 0xac100000) { | |
202 | mask.s_addr = htonl(0xfff00000); /* priv. 172.16.0.0/12 */ | |
203 | } else if ((addr & 0xc0000000) == 0x80000000) { | |
204 | mask.s_addr = htonl(0xffff0000); /* class B */ | |
205 | } else if ((addr & 0xffff0000) == 0xc0a80000) { | |
206 | mask.s_addr = htonl(0xffff0000); /* priv. 192.168.0.0/16 */ | |
207 | } else if ((addr & 0xffff0000) == 0xc6120000) { | |
208 | mask.s_addr = htonl(0xfffe0000); /* tests 198.18.0.0/15 */ | |
209 | } else if ((addr & 0xe0000000) == 0xe0000000) { | |
210 | mask.s_addr = htonl(0xffffff00); /* class C */ | |
211 | } else { | |
212 | mask.s_addr = htonl(0xfffffff0); /* multicast/reserved */ | |
213 | } | |
214 | } else { | |
215 | if (!inet_aton(buf, &net)) { | |
5c843af2 | 216 | error_setg(errp, "Failed to parse netmask"); |
68ac40d2 MM |
217 | return -1; |
218 | } | |
219 | shift = strtol(vnetwork, &end, 10); | |
220 | if (*end != '\0') { | |
221 | if (!inet_aton(vnetwork, &mask)) { | |
5c843af2 HP |
222 | error_setg(errp, |
223 | "Failed to parse netmask (trailing chars)"); | |
68ac40d2 MM |
224 | return -1; |
225 | } | |
226 | } else if (shift < 4 || shift > 32) { | |
5c843af2 HP |
227 | error_setg(errp, |
228 | "Invalid netmask provided (must be in range 4-32)"); | |
68ac40d2 MM |
229 | return -1; |
230 | } else { | |
231 | mask.s_addr = htonl(0xffffffff << (32 - shift)); | |
232 | } | |
233 | } | |
234 | net.s_addr &= mask.s_addr; | |
235 | host.s_addr = net.s_addr | (htonl(0x0202) & ~mask.s_addr); | |
236 | dhcp.s_addr = net.s_addr | (htonl(0x020f) & ~mask.s_addr); | |
237 | dns.s_addr = net.s_addr | (htonl(0x0203) & ~mask.s_addr); | |
238 | } | |
239 | ||
240 | if (vhost && !inet_aton(vhost, &host)) { | |
5c843af2 | 241 | error_setg(errp, "Failed to parse host"); |
68ac40d2 MM |
242 | return -1; |
243 | } | |
244 | if ((host.s_addr & mask.s_addr) != net.s_addr) { | |
5c843af2 | 245 | error_setg(errp, "Host doesn't belong to network"); |
68ac40d2 MM |
246 | return -1; |
247 | } | |
248 | ||
68756ba8 | 249 | if (vnameserver && !inet_aton(vnameserver, &dns)) { |
5c843af2 | 250 | error_setg(errp, "Failed to parse DNS"); |
68ac40d2 MM |
251 | return -1; |
252 | } | |
5c843af2 HP |
253 | if ((dns.s_addr & mask.s_addr) != net.s_addr) { |
254 | error_setg(errp, "DNS doesn't belong to network"); | |
255 | return -1; | |
256 | } | |
257 | if (dns.s_addr == host.s_addr) { | |
258 | error_setg(errp, "DNS must be different from host"); | |
68ac40d2 MM |
259 | return -1; |
260 | } | |
261 | ||
68756ba8 | 262 | if (vdhcp_start && !inet_aton(vdhcp_start, &dhcp)) { |
5c843af2 | 263 | error_setg(errp, "Failed to parse DHCP start address"); |
68ac40d2 MM |
264 | return -1; |
265 | } | |
5c843af2 HP |
266 | if ((dhcp.s_addr & mask.s_addr) != net.s_addr) { |
267 | error_setg(errp, "DHCP doesn't belong to network"); | |
268 | return -1; | |
269 | } | |
270 | if (dhcp.s_addr == host.s_addr || dhcp.s_addr == dns.s_addr) { | |
271 | error_setg(errp, "DNS must be different from host and DNS"); | |
68ac40d2 MM |
272 | return -1; |
273 | } | |
274 | ||
275 | #ifndef _WIN32 | |
276 | if (vsmbserver && !inet_aton(vsmbserver, &smbsrv)) { | |
5c843af2 | 277 | error_setg(errp, "Failed to parse SMB address"); |
68ac40d2 MM |
278 | return -1; |
279 | } | |
280 | #endif | |
281 | ||
7aac531e YB |
282 | #if defined(_WIN32) && (_WIN32_WINNT < 0x0600) |
283 | /* No inet_pton helper before Vista... */ | |
284 | if (vprefix6) { | |
285 | /* Unsupported */ | |
5c843af2 | 286 | error_setg(errp, "IPv6 prefix not supported"); |
7aac531e YB |
287 | return -1; |
288 | } | |
289 | memset(&ip6_prefix, 0, sizeof(ip6_prefix)); | |
290 | ip6_prefix.s6_addr[0] = 0xfe; | |
291 | ip6_prefix.s6_addr[1] = 0xc0; | |
292 | #else | |
293 | if (!vprefix6) { | |
294 | vprefix6 = "fec0::"; | |
295 | } | |
296 | if (!inet_pton(AF_INET6, vprefix6, &ip6_prefix)) { | |
5c843af2 | 297 | error_setg(errp, "Failed to parse IPv6 prefix"); |
7aac531e YB |
298 | return -1; |
299 | } | |
300 | #endif | |
301 | ||
302 | if (!vprefix6_len) { | |
303 | vprefix6_len = 64; | |
304 | } | |
305 | if (vprefix6_len < 0 || vprefix6_len > 126) { | |
5c843af2 HP |
306 | error_setg(errp, |
307 | "Invalid prefix provided (prefix len must be in range 0-126"); | |
7aac531e YB |
308 | return -1; |
309 | } | |
310 | ||
311 | if (vhost6) { | |
312 | #if defined(_WIN32) && (_WIN32_WINNT < 0x0600) | |
5c843af2 | 313 | error_setg(errp, "IPv6 host not supported"); |
7aac531e YB |
314 | return -1; |
315 | #else | |
316 | if (!inet_pton(AF_INET6, vhost6, &ip6_host)) { | |
5c843af2 | 317 | error_setg(errp, "Failed to parse IPv6 host"); |
7aac531e YB |
318 | return -1; |
319 | } | |
320 | if (!in6_equal_net(&ip6_prefix, &ip6_host, vprefix6_len)) { | |
5c843af2 | 321 | error_setg(errp, "IPv6 Host doesn't belong to network"); |
7aac531e YB |
322 | return -1; |
323 | } | |
324 | #endif | |
325 | } else { | |
326 | ip6_host = ip6_prefix; | |
327 | ip6_host.s6_addr[15] |= 2; | |
328 | } | |
329 | ||
330 | if (vnameserver6) { | |
331 | #if defined(_WIN32) && (_WIN32_WINNT < 0x0600) | |
5c843af2 | 332 | error_setg(errp, "IPv6 DNS not supported"); |
7aac531e YB |
333 | return -1; |
334 | #else | |
335 | if (!inet_pton(AF_INET6, vnameserver6, &ip6_dns)) { | |
5c843af2 | 336 | error_setg(errp, "Failed to parse IPv6 DNS"); |
7aac531e YB |
337 | return -1; |
338 | } | |
339 | if (!in6_equal_net(&ip6_prefix, &ip6_dns, vprefix6_len)) { | |
5c843af2 | 340 | error_setg(errp, "IPv6 DNS doesn't belong to network"); |
7aac531e YB |
341 | return -1; |
342 | } | |
343 | #endif | |
344 | } else { | |
345 | ip6_dns = ip6_prefix; | |
346 | ip6_dns.s6_addr[15] |= 3; | |
347 | } | |
348 | ||
f18d1375 BD |
349 | if (vdomainname && !*vdomainname) { |
350 | error_setg(errp, "'domainname' parameter cannot be empty"); | |
351 | return -1; | |
352 | } | |
353 | ||
6e157a03 FZ |
354 | if (vdomainname && strlen(vdomainname) > 255) { |
355 | error_setg(errp, "'domainname' parameter cannot exceed 255 bytes"); | |
356 | return -1; | |
357 | } | |
358 | ||
359 | if (vhostname && strlen(vhostname) > 255) { | |
360 | error_setg(errp, "'vhostname' parameter cannot exceed 255 bytes"); | |
361 | return -1; | |
362 | } | |
7aac531e | 363 | |
0fca92b9 FZ |
364 | if (tftp_server_name && strlen(tftp_server_name) > 255) { |
365 | error_setg(errp, "'tftp-server-name' parameter cannot exceed 255 bytes"); | |
366 | return -1; | |
367 | } | |
368 | ||
ab5f3f84 | 369 | nc = qemu_new_net_client(&net_slirp_info, peer, model, name); |
ce20b5be MM |
370 | |
371 | snprintf(nc->info_str, sizeof(nc->info_str), | |
c54ed5bc JK |
372 | "net=%s,restrict=%s", inet_ntoa(net), |
373 | restricted ? "on" : "off"); | |
ce20b5be MM |
374 | |
375 | s = DO_UPCAST(SlirpState, nc, nc); | |
376 | ||
0b11c036 ST |
377 | s->slirp = slirp_init(restricted, ipv4, net, mask, host, |
378 | ipv6, ip6_prefix, vprefix6_len, ip6_host, | |
0fca92b9 FZ |
379 | vhostname, tftp_server_name, |
380 | tftp_export, bootfile, dhcp, | |
f18d1375 | 381 | dns, ip6_dns, dnssearch, vdomainname, s); |
68ac40d2 MM |
382 | QTAILQ_INSERT_TAIL(&slirp_stacks, s, entry); |
383 | ||
384 | for (config = slirp_configs; config; config = config->next) { | |
385 | if (config->flags & SLIRP_CFG_HOSTFWD) { | |
d18572dd | 386 | if (slirp_hostfwd(s, config->str, errp) < 0) { |
ce20b5be | 387 | goto error; |
5c843af2 | 388 | } |
68ac40d2 | 389 | } else { |
d18572dd | 390 | if (slirp_guestfwd(s, config->str, errp) < 0) { |
ce20b5be | 391 | goto error; |
5c843af2 | 392 | } |
68ac40d2 MM |
393 | } |
394 | } | |
395 | #ifndef _WIN32 | |
68ac40d2 | 396 | if (smb_export) { |
5c843af2 | 397 | if (slirp_smb(s, smb_export, smbsrv, errp) < 0) { |
ce20b5be | 398 | goto error; |
5c843af2 | 399 | } |
68ac40d2 MM |
400 | } |
401 | #endif | |
402 | ||
f6c2e66a PB |
403 | s->exit_notifier.notify = slirp_smb_exit; |
404 | qemu_add_exit_notifier(&s->exit_notifier); | |
68ac40d2 | 405 | return 0; |
ce20b5be MM |
406 | |
407 | error: | |
b20c6b9e | 408 | qemu_del_net_client(nc); |
ce20b5be | 409 | return -1; |
68ac40d2 MM |
410 | } |
411 | ||
93653066 TH |
412 | static SlirpState *slirp_lookup(Monitor *mon, const char *hub_id, |
413 | const char *name) | |
68ac40d2 | 414 | { |
93653066 | 415 | if (name) { |
4e68f7a0 | 416 | NetClientState *nc; |
93653066 TH |
417 | if (hub_id) { |
418 | nc = net_hub_find_client_by_name(strtol(hub_id, NULL, 0), name); | |
419 | if (!nc) { | |
442da403 | 420 | monitor_printf(mon, "unrecognized (hub-id, stackname) pair\n"); |
93653066 TH |
421 | return NULL; |
422 | } | |
68cb29ea TH |
423 | warn_report("Using 'hub-id' is deprecated, specify the netdev id " |
424 | "directly instead"); | |
93653066 TH |
425 | } else { |
426 | nc = qemu_find_netdev(name); | |
427 | if (!nc) { | |
428 | monitor_printf(mon, "unrecognized netdev id '%s'\n", name); | |
429 | return NULL; | |
430 | } | |
68ac40d2 | 431 | } |
ce20b5be | 432 | if (strcmp(nc->model, "user")) { |
68ac40d2 MM |
433 | monitor_printf(mon, "invalid device specified\n"); |
434 | return NULL; | |
435 | } | |
ce20b5be | 436 | return DO_UPCAST(SlirpState, nc, nc); |
68ac40d2 MM |
437 | } else { |
438 | if (QTAILQ_EMPTY(&slirp_stacks)) { | |
439 | monitor_printf(mon, "user mode network stack not in use\n"); | |
440 | return NULL; | |
441 | } | |
442 | return QTAILQ_FIRST(&slirp_stacks); | |
443 | } | |
444 | } | |
445 | ||
3e5a50d6 | 446 | void hmp_hostfwd_remove(Monitor *mon, const QDict *qdict) |
68ac40d2 MM |
447 | { |
448 | struct in_addr host_addr = { .s_addr = INADDR_ANY }; | |
449 | int host_port; | |
e30e5eb6 | 450 | char buf[256]; |
68ac40d2 MM |
451 | const char *src_str, *p; |
452 | SlirpState *s; | |
453 | int is_udp = 0; | |
454 | int err; | |
455 | const char *arg1 = qdict_get_str(qdict, "arg1"); | |
456 | const char *arg2 = qdict_get_try_str(qdict, "arg2"); | |
457 | const char *arg3 = qdict_get_try_str(qdict, "arg3"); | |
458 | ||
93653066 | 459 | if (arg3) { |
68ac40d2 MM |
460 | s = slirp_lookup(mon, arg1, arg2); |
461 | src_str = arg3; | |
93653066 TH |
462 | } else if (arg2) { |
463 | s = slirp_lookup(mon, NULL, arg1); | |
464 | src_str = arg2; | |
68ac40d2 MM |
465 | } else { |
466 | s = slirp_lookup(mon, NULL, NULL); | |
467 | src_str = arg1; | |
468 | } | |
469 | if (!s) { | |
470 | return; | |
471 | } | |
472 | ||
68ac40d2 | 473 | p = src_str; |
e30e5eb6 MA |
474 | if (!p || get_str_sep(buf, sizeof(buf), &p, ':') < 0) { |
475 | goto fail_syntax; | |
476 | } | |
68ac40d2 MM |
477 | |
478 | if (!strcmp(buf, "tcp") || buf[0] == '\0') { | |
479 | is_udp = 0; | |
480 | } else if (!strcmp(buf, "udp")) { | |
481 | is_udp = 1; | |
482 | } else { | |
483 | goto fail_syntax; | |
484 | } | |
485 | ||
486 | if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) { | |
487 | goto fail_syntax; | |
488 | } | |
489 | if (buf[0] != '\0' && !inet_aton(buf, &host_addr)) { | |
490 | goto fail_syntax; | |
491 | } | |
492 | ||
1fb3f7f2 NA |
493 | if (qemu_strtoi(p, NULL, 10, &host_port)) { |
494 | goto fail_syntax; | |
495 | } | |
68ac40d2 | 496 | |
70381662 | 497 | err = slirp_remove_hostfwd(s->slirp, is_udp, host_addr, host_port); |
68ac40d2 MM |
498 | |
499 | monitor_printf(mon, "host forwarding rule for %s %s\n", src_str, | |
b15ba6c9 | 500 | err ? "not found" : "removed"); |
68ac40d2 MM |
501 | return; |
502 | ||
503 | fail_syntax: | |
504 | monitor_printf(mon, "invalid format\n"); | |
505 | } | |
506 | ||
d18572dd | 507 | static int slirp_hostfwd(SlirpState *s, const char *redir_str, Error **errp) |
68ac40d2 MM |
508 | { |
509 | struct in_addr host_addr = { .s_addr = INADDR_ANY }; | |
510 | struct in_addr guest_addr = { .s_addr = 0 }; | |
511 | int host_port, guest_port; | |
512 | const char *p; | |
513 | char buf[256]; | |
514 | int is_udp; | |
515 | char *end; | |
0e7e4fb0 | 516 | const char *fail_reason = "Unknown reason"; |
68ac40d2 MM |
517 | |
518 | p = redir_str; | |
519 | if (!p || get_str_sep(buf, sizeof(buf), &p, ':') < 0) { | |
0e7e4fb0 | 520 | fail_reason = "No : separators"; |
68ac40d2 MM |
521 | goto fail_syntax; |
522 | } | |
523 | if (!strcmp(buf, "tcp") || buf[0] == '\0') { | |
524 | is_udp = 0; | |
525 | } else if (!strcmp(buf, "udp")) { | |
526 | is_udp = 1; | |
527 | } else { | |
0e7e4fb0 | 528 | fail_reason = "Bad protocol name"; |
68ac40d2 MM |
529 | goto fail_syntax; |
530 | } | |
531 | ||
d18572dd TH |
532 | if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) { |
533 | fail_reason = "Missing : separator"; | |
534 | goto fail_syntax; | |
535 | } | |
536 | if (buf[0] != '\0' && !inet_aton(buf, &host_addr)) { | |
537 | fail_reason = "Bad host address"; | |
538 | goto fail_syntax; | |
68ac40d2 MM |
539 | } |
540 | ||
d18572dd | 541 | if (get_str_sep(buf, sizeof(buf), &p, '-') < 0) { |
0e7e4fb0 | 542 | fail_reason = "Bad host port separator"; |
68ac40d2 MM |
543 | goto fail_syntax; |
544 | } | |
545 | host_port = strtol(buf, &end, 0); | |
0bed71ed | 546 | if (*end != '\0' || host_port < 0 || host_port > 65535) { |
0e7e4fb0 | 547 | fail_reason = "Bad host port"; |
68ac40d2 MM |
548 | goto fail_syntax; |
549 | } | |
550 | ||
551 | if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) { | |
0e7e4fb0 | 552 | fail_reason = "Missing guest address"; |
68ac40d2 MM |
553 | goto fail_syntax; |
554 | } | |
555 | if (buf[0] != '\0' && !inet_aton(buf, &guest_addr)) { | |
0e7e4fb0 | 556 | fail_reason = "Bad guest address"; |
68ac40d2 MM |
557 | goto fail_syntax; |
558 | } | |
559 | ||
560 | guest_port = strtol(p, &end, 0); | |
561 | if (*end != '\0' || guest_port < 1 || guest_port > 65535) { | |
0e7e4fb0 | 562 | fail_reason = "Bad guest port"; |
68ac40d2 MM |
563 | goto fail_syntax; |
564 | } | |
565 | ||
566 | if (slirp_add_hostfwd(s->slirp, is_udp, host_addr, host_port, guest_addr, | |
567 | guest_port) < 0) { | |
5c843af2 HP |
568 | error_setg(errp, "Could not set up host forwarding rule '%s'", |
569 | redir_str); | |
68ac40d2 MM |
570 | return -1; |
571 | } | |
572 | return 0; | |
573 | ||
574 | fail_syntax: | |
0e7e4fb0 DDAG |
575 | error_setg(errp, "Invalid host forwarding rule '%s' (%s)", redir_str, |
576 | fail_reason); | |
68ac40d2 MM |
577 | return -1; |
578 | } | |
579 | ||
3e5a50d6 | 580 | void hmp_hostfwd_add(Monitor *mon, const QDict *qdict) |
68ac40d2 MM |
581 | { |
582 | const char *redir_str; | |
583 | SlirpState *s; | |
584 | const char *arg1 = qdict_get_str(qdict, "arg1"); | |
585 | const char *arg2 = qdict_get_try_str(qdict, "arg2"); | |
586 | const char *arg3 = qdict_get_try_str(qdict, "arg3"); | |
587 | ||
93653066 | 588 | if (arg3) { |
68ac40d2 MM |
589 | s = slirp_lookup(mon, arg1, arg2); |
590 | redir_str = arg3; | |
93653066 TH |
591 | } else if (arg2) { |
592 | s = slirp_lookup(mon, NULL, arg1); | |
593 | redir_str = arg2; | |
68ac40d2 MM |
594 | } else { |
595 | s = slirp_lookup(mon, NULL, NULL); | |
596 | redir_str = arg1; | |
597 | } | |
598 | if (s) { | |
5c843af2 | 599 | Error *err = NULL; |
d18572dd | 600 | if (slirp_hostfwd(s, redir_str, &err) < 0) { |
5c843af2 HP |
601 | error_report_err(err); |
602 | } | |
68ac40d2 MM |
603 | } |
604 | ||
605 | } | |
606 | ||
68ac40d2 MM |
607 | #ifndef _WIN32 |
608 | ||
609 | /* automatic user mode samba server configuration */ | |
610 | static void slirp_smb_cleanup(SlirpState *s) | |
611 | { | |
5a01e99f | 612 | int ret; |
68ac40d2 | 613 | |
f95cc8b6 DDAG |
614 | if (s->smb_dir) { |
615 | gchar *cmd = g_strdup_printf("rm -rf %s", s->smb_dir); | |
5a01e99f | 616 | ret = system(cmd); |
24ac07de | 617 | if (ret == -1 || !WIFEXITED(ret)) { |
1ecda02b | 618 | error_report("'%s' failed.", cmd); |
5a01e99f | 619 | } else if (WEXITSTATUS(ret)) { |
1ecda02b MA |
620 | error_report("'%s' failed. Error code: %d", |
621 | cmd, WEXITSTATUS(ret)); | |
5a01e99f | 622 | } |
f95cc8b6 DDAG |
623 | g_free(cmd); |
624 | g_free(s->smb_dir); | |
625 | s->smb_dir = NULL; | |
68ac40d2 MM |
626 | } |
627 | } | |
628 | ||
629 | static int slirp_smb(SlirpState* s, const char *exported_dir, | |
5c843af2 | 630 | struct in_addr vserver_addr, Error **errp) |
68ac40d2 | 631 | { |
f95cc8b6 DDAG |
632 | char *smb_conf; |
633 | char *smb_cmdline; | |
1cb1c5d1 | 634 | struct passwd *passwd; |
68ac40d2 MM |
635 | FILE *f; |
636 | ||
1cb1c5d1 JK |
637 | passwd = getpwuid(geteuid()); |
638 | if (!passwd) { | |
5c843af2 | 639 | error_setg(errp, "Failed to retrieve user name"); |
1cb1c5d1 JK |
640 | return -1; |
641 | } | |
642 | ||
927d811b | 643 | if (access(CONFIG_SMBD_COMMAND, F_OK)) { |
5c843af2 HP |
644 | error_setg(errp, "Could not find '%s', please install it", |
645 | CONFIG_SMBD_COMMAND); | |
927d811b DH |
646 | return -1; |
647 | } | |
648 | ||
649 | if (access(exported_dir, R_OK | X_OK)) { | |
5c843af2 HP |
650 | error_setg(errp, "Error accessing shared directory '%s': %s", |
651 | exported_dir, strerror(errno)); | |
927d811b DH |
652 | return -1; |
653 | } | |
654 | ||
f95cc8b6 DDAG |
655 | s->smb_dir = g_dir_make_tmp("qemu-smb.XXXXXX", NULL); |
656 | if (!s->smb_dir) { | |
5c843af2 | 657 | error_setg(errp, "Could not create samba server dir"); |
68ac40d2 MM |
658 | return -1; |
659 | } | |
f95cc8b6 | 660 | smb_conf = g_strdup_printf("%s/%s", s->smb_dir, "smb.conf"); |
68ac40d2 MM |
661 | |
662 | f = fopen(smb_conf, "w"); | |
663 | if (!f) { | |
664 | slirp_smb_cleanup(s); | |
5c843af2 HP |
665 | error_setg(errp, |
666 | "Could not create samba server configuration file '%s'", | |
667 | smb_conf); | |
f95cc8b6 | 668 | g_free(smb_conf); |
68ac40d2 MM |
669 | return -1; |
670 | } | |
671 | fprintf(f, | |
672 | "[global]\n" | |
673 | "private dir=%s\n" | |
7912d04b PW |
674 | "interfaces=127.0.0.1\n" |
675 | "bind interfaces only=yes\n" | |
68ac40d2 MM |
676 | "pid directory=%s\n" |
677 | "lock directory=%s\n" | |
276eda57 | 678 | "state directory=%s\n" |
7912d04b | 679 | "cache directory=%s\n" |
b87b8a8b | 680 | "ncalrpc dir=%s/ncalrpc\n" |
68ac40d2 MM |
681 | "log file=%s/log.smbd\n" |
682 | "smb passwd file=%s/smbpasswd\n" | |
c2804ee6 MB |
683 | "security = user\n" |
684 | "map to guest = Bad User\n" | |
7912d04b PW |
685 | "load printers = no\n" |
686 | "printing = bsd\n" | |
687 | "disable spoolss = yes\n" | |
688 | "usershare max shares = 0\n" | |
68ac40d2 MM |
689 | "[qemu]\n" |
690 | "path=%s\n" | |
691 | "read only=no\n" | |
1cb1c5d1 JK |
692 | "guest ok=yes\n" |
693 | "force user=%s\n", | |
68ac40d2 MM |
694 | s->smb_dir, |
695 | s->smb_dir, | |
696 | s->smb_dir, | |
697 | s->smb_dir, | |
698 | s->smb_dir, | |
276eda57 | 699 | s->smb_dir, |
b87b8a8b | 700 | s->smb_dir, |
7912d04b | 701 | s->smb_dir, |
1cb1c5d1 JK |
702 | exported_dir, |
703 | passwd->pw_name | |
68ac40d2 MM |
704 | ); |
705 | fclose(f); | |
706 | ||
f95cc8b6 | 707 | smb_cmdline = g_strdup_printf("%s -l %s -s %s", |
44d8d2b2 | 708 | CONFIG_SMBD_COMMAND, s->smb_dir, smb_conf); |
f95cc8b6 | 709 | g_free(smb_conf); |
68ac40d2 | 710 | |
5c1e1890 MT |
711 | if (slirp_add_exec(s->slirp, 0, smb_cmdline, &vserver_addr, 139) < 0 || |
712 | slirp_add_exec(s->slirp, 0, smb_cmdline, &vserver_addr, 445) < 0) { | |
68ac40d2 | 713 | slirp_smb_cleanup(s); |
f95cc8b6 | 714 | g_free(smb_cmdline); |
5c843af2 | 715 | error_setg(errp, "Conflicting/invalid smbserver address"); |
68ac40d2 MM |
716 | return -1; |
717 | } | |
f95cc8b6 | 718 | g_free(smb_cmdline); |
68ac40d2 MM |
719 | return 0; |
720 | } | |
721 | ||
68ac40d2 MM |
722 | #endif /* !defined(_WIN32) */ |
723 | ||
724 | struct GuestFwd { | |
32a6ebec | 725 | CharBackend hd; |
68ac40d2 MM |
726 | struct in_addr server; |
727 | int port; | |
728 | Slirp *slirp; | |
729 | }; | |
730 | ||
731 | static int guestfwd_can_read(void *opaque) | |
732 | { | |
733 | struct GuestFwd *fwd = opaque; | |
734 | return slirp_socket_can_recv(fwd->slirp, fwd->server, fwd->port); | |
735 | } | |
736 | ||
737 | static void guestfwd_read(void *opaque, const uint8_t *buf, int size) | |
738 | { | |
739 | struct GuestFwd *fwd = opaque; | |
740 | slirp_socket_recv(fwd->slirp, fwd->server, fwd->port, buf, size); | |
741 | } | |
742 | ||
d18572dd | 743 | static int slirp_guestfwd(SlirpState *s, const char *config_str, Error **errp) |
68ac40d2 MM |
744 | { |
745 | struct in_addr server = { .s_addr = 0 }; | |
746 | struct GuestFwd *fwd; | |
747 | const char *p; | |
748 | char buf[128]; | |
749 | char *end; | |
750 | int port; | |
751 | ||
752 | p = config_str; | |
d18572dd TH |
753 | if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) { |
754 | goto fail_syntax; | |
755 | } | |
756 | if (strcmp(buf, "tcp") && buf[0] != '\0') { | |
757 | goto fail_syntax; | |
758 | } | |
759 | if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) { | |
760 | goto fail_syntax; | |
761 | } | |
762 | if (buf[0] != '\0' && !inet_aton(buf, &server)) { | |
763 | goto fail_syntax; | |
764 | } | |
765 | if (get_str_sep(buf, sizeof(buf), &p, '-') < 0) { | |
766 | goto fail_syntax; | |
68ac40d2 MM |
767 | } |
768 | port = strtol(buf, &end, 10); | |
769 | if (*end != '\0' || port < 1 || port > 65535) { | |
770 | goto fail_syntax; | |
771 | } | |
772 | ||
a9899996 | 773 | snprintf(buf, sizeof(buf), "guestfwd.tcp.%d", port); |
68ac40d2 | 774 | |
b412eb61 AG |
775 | if ((strlen(p) > 4) && !strncmp(p, "cmd:", 4)) { |
776 | if (slirp_add_exec(s->slirp, 0, &p[4], &server, port) < 0) { | |
5c843af2 HP |
777 | error_setg(errp, "Conflicting/invalid host:port in guest " |
778 | "forwarding rule '%s'", config_str); | |
b412eb61 AG |
779 | return -1; |
780 | } | |
781 | } else { | |
32a6ebec | 782 | Error *err = NULL; |
95e30b2a MAL |
783 | /* |
784 | * FIXME: sure we want to support implicit | |
785 | * muxed monitors here? | |
786 | */ | |
787 | Chardev *chr = qemu_chr_new_mux_mon(buf, p); | |
32a6ebec MAL |
788 | |
789 | if (!chr) { | |
5c843af2 HP |
790 | error_setg(errp, "Could not open guest forwarding device '%s'", |
791 | buf); | |
32a6ebec MAL |
792 | return -1; |
793 | } | |
794 | ||
795 | fwd = g_new(struct GuestFwd, 1); | |
796 | qemu_chr_fe_init(&fwd->hd, chr, &err); | |
797 | if (err) { | |
5c843af2 | 798 | error_propagate(errp, err); |
b412eb61 AG |
799 | g_free(fwd); |
800 | return -1; | |
801 | } | |
68ac40d2 | 802 | |
d14fabd9 | 803 | if (slirp_add_exec(s->slirp, 3, &fwd->hd, &server, port) < 0) { |
5c843af2 HP |
804 | error_setg(errp, "Conflicting/invalid host:port in guest " |
805 | "forwarding rule '%s'", config_str); | |
b412eb61 AG |
806 | g_free(fwd); |
807 | return -1; | |
808 | } | |
809 | fwd->server = server; | |
810 | fwd->port = port; | |
811 | fwd->slirp = s->slirp; | |
812 | ||
5345fdb4 | 813 | qemu_chr_fe_set_handlers(&fwd->hd, guestfwd_can_read, guestfwd_read, |
81517ba3 | 814 | NULL, NULL, fwd, NULL, true); |
b412eb61 | 815 | } |
68ac40d2 MM |
816 | return 0; |
817 | ||
818 | fail_syntax: | |
5c843af2 | 819 | error_setg(errp, "Invalid guest forwarding rule '%s'", config_str); |
68ac40d2 MM |
820 | return -1; |
821 | } | |
822 | ||
1ce6be24 | 823 | void hmp_info_usernet(Monitor *mon, const QDict *qdict) |
68ac40d2 MM |
824 | { |
825 | SlirpState *s; | |
826 | ||
827 | QTAILQ_FOREACH(s, &slirp_stacks, entry) { | |
90d87a33 | 828 | int id; |
442da403 TH |
829 | bool got_hub_id = net_hub_id_for_client(&s->nc, &id) == 0; |
830 | monitor_printf(mon, "Hub %d (%s):\n", | |
831 | got_hub_id ? id : -1, | |
ce20b5be | 832 | s->nc.name); |
68ac40d2 MM |
833 | slirp_connection_info(s->slirp, mon); |
834 | } | |
835 | } | |
836 | ||
094f15c5 LE |
837 | static void |
838 | net_init_slirp_configs(const StringList *fwd, int flags) | |
68ac40d2 | 839 | { |
094f15c5 LE |
840 | while (fwd) { |
841 | struct slirp_config_str *config; | |
68ac40d2 | 842 | |
094f15c5 LE |
843 | config = g_malloc0(sizeof(*config)); |
844 | pstrcpy(config->str, sizeof(config->str), fwd->value->str); | |
845 | config->flags = flags; | |
846 | config->next = slirp_configs; | |
847 | slirp_configs = config; | |
68ac40d2 | 848 | |
094f15c5 | 849 | fwd = fwd->next; |
68ac40d2 | 850 | } |
68ac40d2 MM |
851 | } |
852 | ||
63d2960b KS |
853 | static const char **slirp_dnssearch(const StringList *dnsname) |
854 | { | |
855 | const StringList *c = dnsname; | |
856 | size_t i = 0, num_opts = 0; | |
857 | const char **ret; | |
858 | ||
859 | while (c) { | |
860 | num_opts++; | |
861 | c = c->next; | |
862 | } | |
863 | ||
864 | if (num_opts == 0) { | |
865 | return NULL; | |
866 | } | |
867 | ||
868 | ret = g_malloc((num_opts + 1) * sizeof(*ret)); | |
869 | c = dnsname; | |
870 | while (c) { | |
871 | ret[i++] = c->value->str; | |
872 | c = c->next; | |
873 | } | |
874 | ret[i] = NULL; | |
875 | return ret; | |
876 | } | |
877 | ||
cebea510 | 878 | int net_init_slirp(const Netdev *netdev, const char *name, |
a30ecde6 | 879 | NetClientState *peer, Error **errp) |
68ac40d2 MM |
880 | { |
881 | struct slirp_config_str *config; | |
094f15c5 | 882 | char *vnet; |
68ac40d2 | 883 | int ret; |
094f15c5 | 884 | const NetdevUserOptions *user; |
63d2960b | 885 | const char **dnssearch; |
0b11c036 | 886 | bool ipv4 = true, ipv6 = true; |
68ac40d2 | 887 | |
f394b2e2 EB |
888 | assert(netdev->type == NET_CLIENT_DRIVER_USER); |
889 | user = &netdev->u.user; | |
68ac40d2 | 890 | |
0b11c036 ST |
891 | if ((user->has_ipv6 && user->ipv6 && !user->has_ipv4) || |
892 | (user->has_ipv4 && !user->ipv4)) { | |
893 | ipv4 = 0; | |
894 | } | |
895 | if ((user->has_ipv4 && user->ipv4 && !user->has_ipv6) || | |
896 | (user->has_ipv6 && !user->ipv6)) { | |
897 | ipv6 = 0; | |
898 | } | |
899 | ||
094f15c5 LE |
900 | vnet = user->has_net ? g_strdup(user->net) : |
901 | user->has_ip ? g_strdup_printf("%s/24", user->ip) : | |
902 | NULL; | |
68ac40d2 | 903 | |
63d2960b KS |
904 | dnssearch = slirp_dnssearch(user->dnssearch); |
905 | ||
094f15c5 | 906 | /* all optional fields are initialized to "all bits zero" */ |
68ac40d2 | 907 | |
094f15c5 LE |
908 | net_init_slirp_configs(user->hostfwd, SLIRP_CFG_HOSTFWD); |
909 | net_init_slirp_configs(user->guestfwd, 0); | |
68ac40d2 | 910 | |
0b11c036 ST |
911 | ret = net_slirp_init(peer, "user", name, user->q_restrict, |
912 | ipv4, vnet, user->host, | |
913 | ipv6, user->ipv6_prefix, user->ipv6_prefixlen, | |
d8eb3864 | 914 | user->ipv6_host, user->hostname, user->tftp, |
7aac531e | 915 | user->bootfile, user->dhcpstart, |
d8eb3864 | 916 | user->dns, user->ipv6_dns, user->smb, |
0fca92b9 FZ |
917 | user->smbserver, dnssearch, user->domainname, |
918 | user->tftp_server_name, errp); | |
68ac40d2 MM |
919 | |
920 | while (slirp_configs) { | |
921 | config = slirp_configs; | |
922 | slirp_configs = config->next; | |
7267c094 | 923 | g_free(config); |
68ac40d2 MM |
924 | } |
925 | ||
7267c094 | 926 | g_free(vnet); |
63d2960b | 927 | g_free(dnssearch); |
68ac40d2 MM |
928 | |
929 | return ret; | |
930 | } |