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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 | |
28b150bf | 30 | #ifndef _WIN32 |
1cb1c5d1 | 31 | #include <pwd.h> |
28b150bf BS |
32 | #include <sys/wait.h> |
33 | #endif | |
1422e32d | 34 | #include "net/net.h" |
a245fc18 PB |
35 | #include "clients.h" |
36 | #include "hub.h" | |
83c9089e | 37 | #include "monitor/monitor.h" |
d49b6836 | 38 | #include "qemu/error-report.h" |
1de7afc9 | 39 | #include "qemu/sockets.h" |
68ac40d2 | 40 | #include "slirp/libslirp.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" |
e05ae1d9 | 46 | #include "util.h" |
68ac40d2 MM |
47 | |
48 | static int get_str_sep(char *buf, int buf_size, const char **pp, int sep) | |
49 | { | |
50 | const char *p, *p1; | |
51 | int len; | |
52 | p = *pp; | |
53 | p1 = strchr(p, sep); | |
54 | if (!p1) | |
55 | return -1; | |
56 | len = p1 - p; | |
57 | p1++; | |
58 | if (buf_size > 0) { | |
59 | if (len > buf_size - 1) | |
60 | len = buf_size - 1; | |
61 | memcpy(buf, p, len); | |
62 | buf[len] = '\0'; | |
63 | } | |
64 | *pp = p1; | |
65 | return 0; | |
66 | } | |
67 | ||
68 | /* slirp network adapter */ | |
69 | ||
70 | #define SLIRP_CFG_HOSTFWD 1 | |
68ac40d2 MM |
71 | |
72 | struct slirp_config_str { | |
73 | struct slirp_config_str *next; | |
74 | int flags; | |
75 | char str[1024]; | |
68ac40d2 MM |
76 | }; |
77 | ||
78 | typedef struct SlirpState { | |
4e68f7a0 | 79 | NetClientState nc; |
68ac40d2 | 80 | QTAILQ_ENTRY(SlirpState) entry; |
68ac40d2 | 81 | Slirp *slirp; |
f6c2e66a | 82 | Notifier exit_notifier; |
68ac40d2 | 83 | #ifndef _WIN32 |
f95cc8b6 | 84 | gchar *smb_dir; |
68ac40d2 MM |
85 | #endif |
86 | } SlirpState; | |
87 | ||
88 | static struct slirp_config_str *slirp_configs; | |
b58deb34 | 89 | static QTAILQ_HEAD(, SlirpState) slirp_stacks = |
68ac40d2 MM |
90 | QTAILQ_HEAD_INITIALIZER(slirp_stacks); |
91 | ||
d18572dd TH |
92 | static int slirp_hostfwd(SlirpState *s, const char *redir_str, Error **errp); |
93 | static int slirp_guestfwd(SlirpState *s, const char *config_str, Error **errp); | |
68ac40d2 MM |
94 | |
95 | #ifndef _WIN32 | |
68ac40d2 | 96 | static int slirp_smb(SlirpState *s, const char *exported_dir, |
5c843af2 | 97 | struct in_addr vserver_addr, Error **errp); |
68ac40d2 MM |
98 | static void slirp_smb_cleanup(SlirpState *s); |
99 | #else | |
100 | static inline void slirp_smb_cleanup(SlirpState *s) { } | |
101 | #endif | |
102 | ||
62c1d2c4 | 103 | static void net_slirp_output(void *opaque, const uint8_t *pkt, int pkt_len) |
68ac40d2 MM |
104 | { |
105 | SlirpState *s = opaque; | |
106 | ||
ce20b5be | 107 | qemu_send_packet(&s->nc, pkt, pkt_len); |
68ac40d2 MM |
108 | } |
109 | ||
4e68f7a0 | 110 | static ssize_t net_slirp_receive(NetClientState *nc, const uint8_t *buf, size_t size) |
68ac40d2 | 111 | { |
ce20b5be | 112 | SlirpState *s = DO_UPCAST(SlirpState, nc, nc); |
68ac40d2 MM |
113 | |
114 | slirp_input(s->slirp, buf, size); | |
115 | ||
116 | return size; | |
117 | } | |
118 | ||
f6c2e66a PB |
119 | static void slirp_smb_exit(Notifier *n, void *data) |
120 | { | |
121 | SlirpState *s = container_of(n, SlirpState, exit_notifier); | |
122 | slirp_smb_cleanup(s); | |
123 | } | |
124 | ||
4e68f7a0 | 125 | static void net_slirp_cleanup(NetClientState *nc) |
68ac40d2 | 126 | { |
ce20b5be | 127 | SlirpState *s = DO_UPCAST(SlirpState, nc, nc); |
68ac40d2 MM |
128 | |
129 | slirp_cleanup(s->slirp); | |
67f3280c MAL |
130 | if (s->exit_notifier.notify) { |
131 | qemu_remove_exit_notifier(&s->exit_notifier); | |
132 | } | |
68ac40d2 MM |
133 | slirp_smb_cleanup(s); |
134 | QTAILQ_REMOVE(&slirp_stacks, s, entry); | |
68ac40d2 MM |
135 | } |
136 | ||
ce20b5be | 137 | static NetClientInfo net_slirp_info = { |
f394b2e2 | 138 | .type = NET_CLIENT_DRIVER_USER, |
ce20b5be MM |
139 | .size = sizeof(SlirpState), |
140 | .receive = net_slirp_receive, | |
141 | .cleanup = net_slirp_cleanup, | |
142 | }; | |
143 | ||
2addc8fb MAL |
144 | static void net_slirp_guest_error(const char *msg) |
145 | { | |
146 | qemu_log_mask(LOG_GUEST_ERROR, "%s", msg); | |
147 | } | |
148 | ||
d846b927 MAL |
149 | static const SlirpCb slirp_cb = { |
150 | .output = net_slirp_output, | |
2addc8fb | 151 | .guest_error = net_slirp_guest_error, |
d846b927 MAL |
152 | }; |
153 | ||
4e68f7a0 | 154 | static int net_slirp_init(NetClientState *peer, const char *model, |
68ac40d2 | 155 | const char *name, int restricted, |
0b11c036 ST |
156 | bool ipv4, const char *vnetwork, const char *vhost, |
157 | bool ipv6, const char *vprefix6, int vprefix6_len, | |
7aac531e | 158 | const char *vhost6, |
68ac40d2 MM |
159 | const char *vhostname, const char *tftp_export, |
160 | const char *bootfile, const char *vdhcp_start, | |
7aac531e YB |
161 | const char *vnameserver, const char *vnameserver6, |
162 | const char *smb_export, const char *vsmbserver, | |
f18d1375 | 163 | const char **dnssearch, const char *vdomainname, |
0fca92b9 | 164 | const char *tftp_server_name, |
f18d1375 | 165 | Error **errp) |
68ac40d2 MM |
166 | { |
167 | /* default settings according to historic slirp */ | |
168 | struct in_addr net = { .s_addr = htonl(0x0a000200) }; /* 10.0.2.0 */ | |
169 | struct in_addr mask = { .s_addr = htonl(0xffffff00) }; /* 255.255.255.0 */ | |
170 | struct in_addr host = { .s_addr = htonl(0x0a000202) }; /* 10.0.2.2 */ | |
171 | struct in_addr dhcp = { .s_addr = htonl(0x0a00020f) }; /* 10.0.2.15 */ | |
172 | struct in_addr dns = { .s_addr = htonl(0x0a000203) }; /* 10.0.2.3 */ | |
7aac531e YB |
173 | struct in6_addr ip6_prefix; |
174 | struct in6_addr ip6_host; | |
175 | struct in6_addr ip6_dns; | |
68ac40d2 MM |
176 | #ifndef _WIN32 |
177 | struct in_addr smbsrv = { .s_addr = 0 }; | |
178 | #endif | |
4e68f7a0 | 179 | NetClientState *nc; |
68ac40d2 MM |
180 | SlirpState *s; |
181 | char buf[20]; | |
182 | uint32_t addr; | |
183 | int shift; | |
184 | char *end; | |
185 | struct slirp_config_str *config; | |
186 | ||
0b11c036 | 187 | if (!ipv4 && (vnetwork || vhost || vnameserver)) { |
5c843af2 | 188 | error_setg(errp, "IPv4 disabled but netmask/host/dns provided"); |
0b11c036 ST |
189 | return -1; |
190 | } | |
191 | ||
192 | if (!ipv6 && (vprefix6 || vhost6 || vnameserver6)) { | |
5c843af2 | 193 | error_setg(errp, "IPv6 disabled but prefix/host6/dns6 provided"); |
0b11c036 ST |
194 | return -1; |
195 | } | |
196 | ||
197 | if (!ipv4 && !ipv6) { | |
198 | /* It doesn't make sense to disable both */ | |
5c843af2 | 199 | error_setg(errp, "IPv4 and IPv6 disabled"); |
0b11c036 ST |
200 | return -1; |
201 | } | |
202 | ||
68ac40d2 MM |
203 | if (vnetwork) { |
204 | if (get_str_sep(buf, sizeof(buf), &vnetwork, '/') < 0) { | |
205 | if (!inet_aton(vnetwork, &net)) { | |
5c843af2 | 206 | error_setg(errp, "Failed to parse netmask"); |
68ac40d2 MM |
207 | return -1; |
208 | } | |
209 | addr = ntohl(net.s_addr); | |
210 | if (!(addr & 0x80000000)) { | |
211 | mask.s_addr = htonl(0xff000000); /* class A */ | |
212 | } else if ((addr & 0xfff00000) == 0xac100000) { | |
213 | mask.s_addr = htonl(0xfff00000); /* priv. 172.16.0.0/12 */ | |
214 | } else if ((addr & 0xc0000000) == 0x80000000) { | |
215 | mask.s_addr = htonl(0xffff0000); /* class B */ | |
216 | } else if ((addr & 0xffff0000) == 0xc0a80000) { | |
217 | mask.s_addr = htonl(0xffff0000); /* priv. 192.168.0.0/16 */ | |
218 | } else if ((addr & 0xffff0000) == 0xc6120000) { | |
219 | mask.s_addr = htonl(0xfffe0000); /* tests 198.18.0.0/15 */ | |
220 | } else if ((addr & 0xe0000000) == 0xe0000000) { | |
221 | mask.s_addr = htonl(0xffffff00); /* class C */ | |
222 | } else { | |
223 | mask.s_addr = htonl(0xfffffff0); /* multicast/reserved */ | |
224 | } | |
225 | } else { | |
226 | if (!inet_aton(buf, &net)) { | |
5c843af2 | 227 | error_setg(errp, "Failed to parse netmask"); |
68ac40d2 MM |
228 | return -1; |
229 | } | |
230 | shift = strtol(vnetwork, &end, 10); | |
231 | if (*end != '\0') { | |
232 | if (!inet_aton(vnetwork, &mask)) { | |
5c843af2 HP |
233 | error_setg(errp, |
234 | "Failed to parse netmask (trailing chars)"); | |
68ac40d2 MM |
235 | return -1; |
236 | } | |
237 | } else if (shift < 4 || shift > 32) { | |
5c843af2 HP |
238 | error_setg(errp, |
239 | "Invalid netmask provided (must be in range 4-32)"); | |
68ac40d2 MM |
240 | return -1; |
241 | } else { | |
242 | mask.s_addr = htonl(0xffffffff << (32 - shift)); | |
243 | } | |
244 | } | |
245 | net.s_addr &= mask.s_addr; | |
246 | host.s_addr = net.s_addr | (htonl(0x0202) & ~mask.s_addr); | |
247 | dhcp.s_addr = net.s_addr | (htonl(0x020f) & ~mask.s_addr); | |
248 | dns.s_addr = net.s_addr | (htonl(0x0203) & ~mask.s_addr); | |
249 | } | |
250 | ||
251 | if (vhost && !inet_aton(vhost, &host)) { | |
5c843af2 | 252 | error_setg(errp, "Failed to parse host"); |
68ac40d2 MM |
253 | return -1; |
254 | } | |
255 | if ((host.s_addr & mask.s_addr) != net.s_addr) { | |
5c843af2 | 256 | error_setg(errp, "Host doesn't belong to network"); |
68ac40d2 MM |
257 | return -1; |
258 | } | |
259 | ||
68756ba8 | 260 | if (vnameserver && !inet_aton(vnameserver, &dns)) { |
5c843af2 | 261 | error_setg(errp, "Failed to parse DNS"); |
68ac40d2 MM |
262 | return -1; |
263 | } | |
5c843af2 HP |
264 | if ((dns.s_addr & mask.s_addr) != net.s_addr) { |
265 | error_setg(errp, "DNS doesn't belong to network"); | |
266 | return -1; | |
267 | } | |
268 | if (dns.s_addr == host.s_addr) { | |
269 | error_setg(errp, "DNS must be different from host"); | |
68ac40d2 MM |
270 | return -1; |
271 | } | |
272 | ||
68756ba8 | 273 | if (vdhcp_start && !inet_aton(vdhcp_start, &dhcp)) { |
5c843af2 | 274 | error_setg(errp, "Failed to parse DHCP start address"); |
68ac40d2 MM |
275 | return -1; |
276 | } | |
5c843af2 HP |
277 | if ((dhcp.s_addr & mask.s_addr) != net.s_addr) { |
278 | error_setg(errp, "DHCP doesn't belong to network"); | |
279 | return -1; | |
280 | } | |
281 | if (dhcp.s_addr == host.s_addr || dhcp.s_addr == dns.s_addr) { | |
282 | error_setg(errp, "DNS must be different from host and DNS"); | |
68ac40d2 MM |
283 | return -1; |
284 | } | |
285 | ||
286 | #ifndef _WIN32 | |
287 | if (vsmbserver && !inet_aton(vsmbserver, &smbsrv)) { | |
5c843af2 | 288 | error_setg(errp, "Failed to parse SMB address"); |
68ac40d2 MM |
289 | return -1; |
290 | } | |
291 | #endif | |
292 | ||
7aac531e YB |
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 | } | |
7aac531e YB |
300 | |
301 | if (!vprefix6_len) { | |
302 | vprefix6_len = 64; | |
303 | } | |
304 | if (vprefix6_len < 0 || vprefix6_len > 126) { | |
5c843af2 HP |
305 | error_setg(errp, |
306 | "Invalid prefix provided (prefix len must be in range 0-126"); | |
7aac531e YB |
307 | return -1; |
308 | } | |
309 | ||
310 | if (vhost6) { | |
7aac531e | 311 | if (!inet_pton(AF_INET6, vhost6, &ip6_host)) { |
5c843af2 | 312 | error_setg(errp, "Failed to parse IPv6 host"); |
7aac531e YB |
313 | return -1; |
314 | } | |
315 | if (!in6_equal_net(&ip6_prefix, &ip6_host, vprefix6_len)) { | |
5c843af2 | 316 | error_setg(errp, "IPv6 Host doesn't belong to network"); |
7aac531e YB |
317 | return -1; |
318 | } | |
7aac531e YB |
319 | } else { |
320 | ip6_host = ip6_prefix; | |
321 | ip6_host.s6_addr[15] |= 2; | |
322 | } | |
323 | ||
324 | if (vnameserver6) { | |
7aac531e | 325 | if (!inet_pton(AF_INET6, vnameserver6, &ip6_dns)) { |
5c843af2 | 326 | error_setg(errp, "Failed to parse IPv6 DNS"); |
7aac531e YB |
327 | return -1; |
328 | } | |
329 | if (!in6_equal_net(&ip6_prefix, &ip6_dns, vprefix6_len)) { | |
5c843af2 | 330 | error_setg(errp, "IPv6 DNS doesn't belong to network"); |
7aac531e YB |
331 | return -1; |
332 | } | |
7aac531e YB |
333 | } else { |
334 | ip6_dns = ip6_prefix; | |
335 | ip6_dns.s6_addr[15] |= 3; | |
336 | } | |
337 | ||
f18d1375 BD |
338 | if (vdomainname && !*vdomainname) { |
339 | error_setg(errp, "'domainname' parameter cannot be empty"); | |
340 | return -1; | |
341 | } | |
342 | ||
6e157a03 FZ |
343 | if (vdomainname && strlen(vdomainname) > 255) { |
344 | error_setg(errp, "'domainname' parameter cannot exceed 255 bytes"); | |
345 | return -1; | |
346 | } | |
347 | ||
348 | if (vhostname && strlen(vhostname) > 255) { | |
349 | error_setg(errp, "'vhostname' parameter cannot exceed 255 bytes"); | |
350 | return -1; | |
351 | } | |
7aac531e | 352 | |
0fca92b9 FZ |
353 | if (tftp_server_name && strlen(tftp_server_name) > 255) { |
354 | error_setg(errp, "'tftp-server-name' parameter cannot exceed 255 bytes"); | |
355 | return -1; | |
356 | } | |
357 | ||
ab5f3f84 | 358 | nc = qemu_new_net_client(&net_slirp_info, peer, model, name); |
ce20b5be MM |
359 | |
360 | snprintf(nc->info_str, sizeof(nc->info_str), | |
c54ed5bc JK |
361 | "net=%s,restrict=%s", inet_ntoa(net), |
362 | restricted ? "on" : "off"); | |
ce20b5be MM |
363 | |
364 | s = DO_UPCAST(SlirpState, nc, nc); | |
365 | ||
0b11c036 ST |
366 | s->slirp = slirp_init(restricted, ipv4, net, mask, host, |
367 | ipv6, ip6_prefix, vprefix6_len, ip6_host, | |
0fca92b9 FZ |
368 | vhostname, tftp_server_name, |
369 | tftp_export, bootfile, dhcp, | |
62c1d2c4 | 370 | dns, ip6_dns, dnssearch, vdomainname, |
d846b927 | 371 | &slirp_cb, s); |
68ac40d2 MM |
372 | QTAILQ_INSERT_TAIL(&slirp_stacks, s, entry); |
373 | ||
374 | for (config = slirp_configs; config; config = config->next) { | |
375 | if (config->flags & SLIRP_CFG_HOSTFWD) { | |
d18572dd | 376 | if (slirp_hostfwd(s, config->str, errp) < 0) { |
ce20b5be | 377 | goto error; |
5c843af2 | 378 | } |
68ac40d2 | 379 | } else { |
d18572dd | 380 | if (slirp_guestfwd(s, config->str, errp) < 0) { |
ce20b5be | 381 | goto error; |
5c843af2 | 382 | } |
68ac40d2 MM |
383 | } |
384 | } | |
385 | #ifndef _WIN32 | |
68ac40d2 | 386 | if (smb_export) { |
5c843af2 | 387 | if (slirp_smb(s, smb_export, smbsrv, errp) < 0) { |
ce20b5be | 388 | goto error; |
5c843af2 | 389 | } |
68ac40d2 MM |
390 | } |
391 | #endif | |
392 | ||
f6c2e66a PB |
393 | s->exit_notifier.notify = slirp_smb_exit; |
394 | qemu_add_exit_notifier(&s->exit_notifier); | |
68ac40d2 | 395 | return 0; |
ce20b5be MM |
396 | |
397 | error: | |
b20c6b9e | 398 | qemu_del_net_client(nc); |
ce20b5be | 399 | return -1; |
68ac40d2 MM |
400 | } |
401 | ||
93653066 TH |
402 | static SlirpState *slirp_lookup(Monitor *mon, const char *hub_id, |
403 | const char *name) | |
68ac40d2 | 404 | { |
93653066 | 405 | if (name) { |
4e68f7a0 | 406 | NetClientState *nc; |
93653066 TH |
407 | if (hub_id) { |
408 | nc = net_hub_find_client_by_name(strtol(hub_id, NULL, 0), name); | |
409 | if (!nc) { | |
442da403 | 410 | monitor_printf(mon, "unrecognized (hub-id, stackname) pair\n"); |
93653066 TH |
411 | return NULL; |
412 | } | |
68cb29ea TH |
413 | warn_report("Using 'hub-id' is deprecated, specify the netdev id " |
414 | "directly instead"); | |
93653066 TH |
415 | } else { |
416 | nc = qemu_find_netdev(name); | |
417 | if (!nc) { | |
418 | monitor_printf(mon, "unrecognized netdev id '%s'\n", name); | |
419 | return NULL; | |
420 | } | |
68ac40d2 | 421 | } |
ce20b5be | 422 | if (strcmp(nc->model, "user")) { |
68ac40d2 MM |
423 | monitor_printf(mon, "invalid device specified\n"); |
424 | return NULL; | |
425 | } | |
ce20b5be | 426 | return DO_UPCAST(SlirpState, nc, nc); |
68ac40d2 MM |
427 | } else { |
428 | if (QTAILQ_EMPTY(&slirp_stacks)) { | |
429 | monitor_printf(mon, "user mode network stack not in use\n"); | |
430 | return NULL; | |
431 | } | |
432 | return QTAILQ_FIRST(&slirp_stacks); | |
433 | } | |
434 | } | |
435 | ||
3e5a50d6 | 436 | void hmp_hostfwd_remove(Monitor *mon, const QDict *qdict) |
68ac40d2 MM |
437 | { |
438 | struct in_addr host_addr = { .s_addr = INADDR_ANY }; | |
439 | int host_port; | |
e30e5eb6 | 440 | char buf[256]; |
68ac40d2 MM |
441 | const char *src_str, *p; |
442 | SlirpState *s; | |
443 | int is_udp = 0; | |
444 | int err; | |
445 | const char *arg1 = qdict_get_str(qdict, "arg1"); | |
446 | const char *arg2 = qdict_get_try_str(qdict, "arg2"); | |
447 | const char *arg3 = qdict_get_try_str(qdict, "arg3"); | |
448 | ||
93653066 | 449 | if (arg3) { |
68ac40d2 MM |
450 | s = slirp_lookup(mon, arg1, arg2); |
451 | src_str = arg3; | |
93653066 TH |
452 | } else if (arg2) { |
453 | s = slirp_lookup(mon, NULL, arg1); | |
454 | src_str = arg2; | |
68ac40d2 MM |
455 | } else { |
456 | s = slirp_lookup(mon, NULL, NULL); | |
457 | src_str = arg1; | |
458 | } | |
459 | if (!s) { | |
460 | return; | |
461 | } | |
462 | ||
68ac40d2 | 463 | p = src_str; |
e30e5eb6 MA |
464 | if (!p || get_str_sep(buf, sizeof(buf), &p, ':') < 0) { |
465 | goto fail_syntax; | |
466 | } | |
68ac40d2 MM |
467 | |
468 | if (!strcmp(buf, "tcp") || buf[0] == '\0') { | |
469 | is_udp = 0; | |
470 | } else if (!strcmp(buf, "udp")) { | |
471 | is_udp = 1; | |
472 | } else { | |
473 | goto fail_syntax; | |
474 | } | |
475 | ||
476 | if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) { | |
477 | goto fail_syntax; | |
478 | } | |
479 | if (buf[0] != '\0' && !inet_aton(buf, &host_addr)) { | |
480 | goto fail_syntax; | |
481 | } | |
482 | ||
1fb3f7f2 NA |
483 | if (qemu_strtoi(p, NULL, 10, &host_port)) { |
484 | goto fail_syntax; | |
485 | } | |
68ac40d2 | 486 | |
70381662 | 487 | err = slirp_remove_hostfwd(s->slirp, is_udp, host_addr, host_port); |
68ac40d2 MM |
488 | |
489 | monitor_printf(mon, "host forwarding rule for %s %s\n", src_str, | |
b15ba6c9 | 490 | err ? "not found" : "removed"); |
68ac40d2 MM |
491 | return; |
492 | ||
493 | fail_syntax: | |
494 | monitor_printf(mon, "invalid format\n"); | |
495 | } | |
496 | ||
d18572dd | 497 | static int slirp_hostfwd(SlirpState *s, const char *redir_str, Error **errp) |
68ac40d2 MM |
498 | { |
499 | struct in_addr host_addr = { .s_addr = INADDR_ANY }; | |
500 | struct in_addr guest_addr = { .s_addr = 0 }; | |
501 | int host_port, guest_port; | |
502 | const char *p; | |
503 | char buf[256]; | |
504 | int is_udp; | |
505 | char *end; | |
0e7e4fb0 | 506 | const char *fail_reason = "Unknown reason"; |
68ac40d2 MM |
507 | |
508 | p = redir_str; | |
509 | if (!p || get_str_sep(buf, sizeof(buf), &p, ':') < 0) { | |
0e7e4fb0 | 510 | fail_reason = "No : separators"; |
68ac40d2 MM |
511 | goto fail_syntax; |
512 | } | |
513 | if (!strcmp(buf, "tcp") || buf[0] == '\0') { | |
514 | is_udp = 0; | |
515 | } else if (!strcmp(buf, "udp")) { | |
516 | is_udp = 1; | |
517 | } else { | |
0e7e4fb0 | 518 | fail_reason = "Bad protocol name"; |
68ac40d2 MM |
519 | goto fail_syntax; |
520 | } | |
521 | ||
d18572dd TH |
522 | if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) { |
523 | fail_reason = "Missing : separator"; | |
524 | goto fail_syntax; | |
525 | } | |
526 | if (buf[0] != '\0' && !inet_aton(buf, &host_addr)) { | |
527 | fail_reason = "Bad host address"; | |
528 | goto fail_syntax; | |
68ac40d2 MM |
529 | } |
530 | ||
d18572dd | 531 | if (get_str_sep(buf, sizeof(buf), &p, '-') < 0) { |
0e7e4fb0 | 532 | fail_reason = "Bad host port separator"; |
68ac40d2 MM |
533 | goto fail_syntax; |
534 | } | |
535 | host_port = strtol(buf, &end, 0); | |
0bed71ed | 536 | if (*end != '\0' || host_port < 0 || host_port > 65535) { |
0e7e4fb0 | 537 | fail_reason = "Bad host port"; |
68ac40d2 MM |
538 | goto fail_syntax; |
539 | } | |
540 | ||
541 | if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) { | |
0e7e4fb0 | 542 | fail_reason = "Missing guest address"; |
68ac40d2 MM |
543 | goto fail_syntax; |
544 | } | |
545 | if (buf[0] != '\0' && !inet_aton(buf, &guest_addr)) { | |
0e7e4fb0 | 546 | fail_reason = "Bad guest address"; |
68ac40d2 MM |
547 | goto fail_syntax; |
548 | } | |
549 | ||
550 | guest_port = strtol(p, &end, 0); | |
551 | if (*end != '\0' || guest_port < 1 || guest_port > 65535) { | |
0e7e4fb0 | 552 | fail_reason = "Bad guest port"; |
68ac40d2 MM |
553 | goto fail_syntax; |
554 | } | |
555 | ||
556 | if (slirp_add_hostfwd(s->slirp, is_udp, host_addr, host_port, guest_addr, | |
557 | guest_port) < 0) { | |
5c843af2 HP |
558 | error_setg(errp, "Could not set up host forwarding rule '%s'", |
559 | redir_str); | |
68ac40d2 MM |
560 | return -1; |
561 | } | |
562 | return 0; | |
563 | ||
564 | fail_syntax: | |
0e7e4fb0 DDAG |
565 | error_setg(errp, "Invalid host forwarding rule '%s' (%s)", redir_str, |
566 | fail_reason); | |
68ac40d2 MM |
567 | return -1; |
568 | } | |
569 | ||
3e5a50d6 | 570 | void hmp_hostfwd_add(Monitor *mon, const QDict *qdict) |
68ac40d2 MM |
571 | { |
572 | const char *redir_str; | |
573 | SlirpState *s; | |
574 | const char *arg1 = qdict_get_str(qdict, "arg1"); | |
575 | const char *arg2 = qdict_get_try_str(qdict, "arg2"); | |
576 | const char *arg3 = qdict_get_try_str(qdict, "arg3"); | |
577 | ||
93653066 | 578 | if (arg3) { |
68ac40d2 MM |
579 | s = slirp_lookup(mon, arg1, arg2); |
580 | redir_str = arg3; | |
93653066 TH |
581 | } else if (arg2) { |
582 | s = slirp_lookup(mon, NULL, arg1); | |
583 | redir_str = arg2; | |
68ac40d2 MM |
584 | } else { |
585 | s = slirp_lookup(mon, NULL, NULL); | |
586 | redir_str = arg1; | |
587 | } | |
588 | if (s) { | |
5c843af2 | 589 | Error *err = NULL; |
d18572dd | 590 | if (slirp_hostfwd(s, redir_str, &err) < 0) { |
5c843af2 HP |
591 | error_report_err(err); |
592 | } | |
68ac40d2 MM |
593 | } |
594 | ||
595 | } | |
596 | ||
68ac40d2 MM |
597 | #ifndef _WIN32 |
598 | ||
599 | /* automatic user mode samba server configuration */ | |
600 | static void slirp_smb_cleanup(SlirpState *s) | |
601 | { | |
5a01e99f | 602 | int ret; |
68ac40d2 | 603 | |
f95cc8b6 DDAG |
604 | if (s->smb_dir) { |
605 | gchar *cmd = g_strdup_printf("rm -rf %s", s->smb_dir); | |
5a01e99f | 606 | ret = system(cmd); |
24ac07de | 607 | if (ret == -1 || !WIFEXITED(ret)) { |
1ecda02b | 608 | error_report("'%s' failed.", cmd); |
5a01e99f | 609 | } else if (WEXITSTATUS(ret)) { |
1ecda02b MA |
610 | error_report("'%s' failed. Error code: %d", |
611 | cmd, WEXITSTATUS(ret)); | |
5a01e99f | 612 | } |
f95cc8b6 DDAG |
613 | g_free(cmd); |
614 | g_free(s->smb_dir); | |
615 | s->smb_dir = NULL; | |
68ac40d2 MM |
616 | } |
617 | } | |
618 | ||
619 | static int slirp_smb(SlirpState* s, const char *exported_dir, | |
5c843af2 | 620 | struct in_addr vserver_addr, Error **errp) |
68ac40d2 | 621 | { |
f95cc8b6 DDAG |
622 | char *smb_conf; |
623 | char *smb_cmdline; | |
1cb1c5d1 | 624 | struct passwd *passwd; |
68ac40d2 MM |
625 | FILE *f; |
626 | ||
1cb1c5d1 JK |
627 | passwd = getpwuid(geteuid()); |
628 | if (!passwd) { | |
5c843af2 | 629 | error_setg(errp, "Failed to retrieve user name"); |
1cb1c5d1 JK |
630 | return -1; |
631 | } | |
632 | ||
927d811b | 633 | if (access(CONFIG_SMBD_COMMAND, F_OK)) { |
5c843af2 HP |
634 | error_setg(errp, "Could not find '%s', please install it", |
635 | CONFIG_SMBD_COMMAND); | |
927d811b DH |
636 | return -1; |
637 | } | |
638 | ||
639 | if (access(exported_dir, R_OK | X_OK)) { | |
5c843af2 HP |
640 | error_setg(errp, "Error accessing shared directory '%s': %s", |
641 | exported_dir, strerror(errno)); | |
927d811b DH |
642 | return -1; |
643 | } | |
644 | ||
f95cc8b6 DDAG |
645 | s->smb_dir = g_dir_make_tmp("qemu-smb.XXXXXX", NULL); |
646 | if (!s->smb_dir) { | |
5c843af2 | 647 | error_setg(errp, "Could not create samba server dir"); |
68ac40d2 MM |
648 | return -1; |
649 | } | |
f95cc8b6 | 650 | smb_conf = g_strdup_printf("%s/%s", s->smb_dir, "smb.conf"); |
68ac40d2 MM |
651 | |
652 | f = fopen(smb_conf, "w"); | |
653 | if (!f) { | |
654 | slirp_smb_cleanup(s); | |
5c843af2 HP |
655 | error_setg(errp, |
656 | "Could not create samba server configuration file '%s'", | |
657 | smb_conf); | |
f95cc8b6 | 658 | g_free(smb_conf); |
68ac40d2 MM |
659 | return -1; |
660 | } | |
661 | fprintf(f, | |
662 | "[global]\n" | |
663 | "private dir=%s\n" | |
7912d04b PW |
664 | "interfaces=127.0.0.1\n" |
665 | "bind interfaces only=yes\n" | |
68ac40d2 MM |
666 | "pid directory=%s\n" |
667 | "lock directory=%s\n" | |
276eda57 | 668 | "state directory=%s\n" |
7912d04b | 669 | "cache directory=%s\n" |
b87b8a8b | 670 | "ncalrpc dir=%s/ncalrpc\n" |
68ac40d2 MM |
671 | "log file=%s/log.smbd\n" |
672 | "smb passwd file=%s/smbpasswd\n" | |
c2804ee6 MB |
673 | "security = user\n" |
674 | "map to guest = Bad User\n" | |
7912d04b PW |
675 | "load printers = no\n" |
676 | "printing = bsd\n" | |
677 | "disable spoolss = yes\n" | |
678 | "usershare max shares = 0\n" | |
68ac40d2 MM |
679 | "[qemu]\n" |
680 | "path=%s\n" | |
681 | "read only=no\n" | |
1cb1c5d1 JK |
682 | "guest ok=yes\n" |
683 | "force user=%s\n", | |
68ac40d2 MM |
684 | s->smb_dir, |
685 | s->smb_dir, | |
686 | s->smb_dir, | |
687 | s->smb_dir, | |
688 | s->smb_dir, | |
276eda57 | 689 | s->smb_dir, |
b87b8a8b | 690 | s->smb_dir, |
7912d04b | 691 | s->smb_dir, |
1cb1c5d1 JK |
692 | exported_dir, |
693 | passwd->pw_name | |
68ac40d2 MM |
694 | ); |
695 | fclose(f); | |
696 | ||
f95cc8b6 | 697 | smb_cmdline = g_strdup_printf("%s -l %s -s %s", |
44d8d2b2 | 698 | CONFIG_SMBD_COMMAND, s->smb_dir, smb_conf); |
f95cc8b6 | 699 | g_free(smb_conf); |
68ac40d2 | 700 | |
3ed9f823 MAL |
701 | if (slirp_add_exec(s->slirp, NULL, smb_cmdline, &vserver_addr, 139) < 0 || |
702 | slirp_add_exec(s->slirp, NULL, smb_cmdline, &vserver_addr, 445) < 0) { | |
68ac40d2 | 703 | slirp_smb_cleanup(s); |
f95cc8b6 | 704 | g_free(smb_cmdline); |
5c843af2 | 705 | error_setg(errp, "Conflicting/invalid smbserver address"); |
68ac40d2 MM |
706 | return -1; |
707 | } | |
f95cc8b6 | 708 | g_free(smb_cmdline); |
68ac40d2 MM |
709 | return 0; |
710 | } | |
711 | ||
68ac40d2 MM |
712 | #endif /* !defined(_WIN32) */ |
713 | ||
714 | struct GuestFwd { | |
32a6ebec | 715 | CharBackend hd; |
68ac40d2 MM |
716 | struct in_addr server; |
717 | int port; | |
718 | Slirp *slirp; | |
719 | }; | |
720 | ||
721 | static int guestfwd_can_read(void *opaque) | |
722 | { | |
723 | struct GuestFwd *fwd = opaque; | |
724 | return slirp_socket_can_recv(fwd->slirp, fwd->server, fwd->port); | |
725 | } | |
726 | ||
727 | static void guestfwd_read(void *opaque, const uint8_t *buf, int size) | |
728 | { | |
729 | struct GuestFwd *fwd = opaque; | |
730 | slirp_socket_recv(fwd->slirp, fwd->server, fwd->port, buf, size); | |
731 | } | |
732 | ||
d18572dd | 733 | static int slirp_guestfwd(SlirpState *s, const char *config_str, Error **errp) |
68ac40d2 MM |
734 | { |
735 | struct in_addr server = { .s_addr = 0 }; | |
736 | struct GuestFwd *fwd; | |
737 | const char *p; | |
738 | char buf[128]; | |
739 | char *end; | |
740 | int port; | |
741 | ||
742 | p = config_str; | |
d18572dd TH |
743 | if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) { |
744 | goto fail_syntax; | |
745 | } | |
746 | if (strcmp(buf, "tcp") && buf[0] != '\0') { | |
747 | goto fail_syntax; | |
748 | } | |
749 | if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) { | |
750 | goto fail_syntax; | |
751 | } | |
752 | if (buf[0] != '\0' && !inet_aton(buf, &server)) { | |
753 | goto fail_syntax; | |
754 | } | |
755 | if (get_str_sep(buf, sizeof(buf), &p, '-') < 0) { | |
756 | goto fail_syntax; | |
68ac40d2 MM |
757 | } |
758 | port = strtol(buf, &end, 10); | |
759 | if (*end != '\0' || port < 1 || port > 65535) { | |
760 | goto fail_syntax; | |
761 | } | |
762 | ||
a9899996 | 763 | snprintf(buf, sizeof(buf), "guestfwd.tcp.%d", port); |
68ac40d2 | 764 | |
b412eb61 | 765 | if ((strlen(p) > 4) && !strncmp(p, "cmd:", 4)) { |
3ed9f823 | 766 | if (slirp_add_exec(s->slirp, NULL, &p[4], &server, port) < 0) { |
5c843af2 HP |
767 | error_setg(errp, "Conflicting/invalid host:port in guest " |
768 | "forwarding rule '%s'", config_str); | |
b412eb61 AG |
769 | return -1; |
770 | } | |
771 | } else { | |
32a6ebec | 772 | Error *err = NULL; |
95e30b2a MAL |
773 | /* |
774 | * FIXME: sure we want to support implicit | |
775 | * muxed monitors here? | |
776 | */ | |
777 | Chardev *chr = qemu_chr_new_mux_mon(buf, p); | |
32a6ebec MAL |
778 | |
779 | if (!chr) { | |
5c843af2 HP |
780 | error_setg(errp, "Could not open guest forwarding device '%s'", |
781 | buf); | |
32a6ebec MAL |
782 | return -1; |
783 | } | |
784 | ||
785 | fwd = g_new(struct GuestFwd, 1); | |
786 | qemu_chr_fe_init(&fwd->hd, chr, &err); | |
787 | if (err) { | |
5c843af2 | 788 | error_propagate(errp, err); |
b412eb61 AG |
789 | g_free(fwd); |
790 | return -1; | |
791 | } | |
68ac40d2 | 792 | |
3ed9f823 | 793 | if (slirp_add_exec(s->slirp, &fwd->hd, NULL, &server, port) < 0) { |
5c843af2 HP |
794 | error_setg(errp, "Conflicting/invalid host:port in guest " |
795 | "forwarding rule '%s'", config_str); | |
b412eb61 AG |
796 | g_free(fwd); |
797 | return -1; | |
798 | } | |
799 | fwd->server = server; | |
800 | fwd->port = port; | |
801 | fwd->slirp = s->slirp; | |
802 | ||
5345fdb4 | 803 | qemu_chr_fe_set_handlers(&fwd->hd, guestfwd_can_read, guestfwd_read, |
81517ba3 | 804 | NULL, NULL, fwd, NULL, true); |
b412eb61 | 805 | } |
68ac40d2 MM |
806 | return 0; |
807 | ||
808 | fail_syntax: | |
5c843af2 | 809 | error_setg(errp, "Invalid guest forwarding rule '%s'", config_str); |
68ac40d2 MM |
810 | return -1; |
811 | } | |
812 | ||
1ce6be24 | 813 | void hmp_info_usernet(Monitor *mon, const QDict *qdict) |
68ac40d2 MM |
814 | { |
815 | SlirpState *s; | |
816 | ||
817 | QTAILQ_FOREACH(s, &slirp_stacks, entry) { | |
90d87a33 | 818 | int id; |
442da403 | 819 | bool got_hub_id = net_hub_id_for_client(&s->nc, &id) == 0; |
b7f43bf2 MAL |
820 | char *info = slirp_connection_info(s->slirp); |
821 | monitor_printf(mon, "Hub %d (%s):\n%s", | |
442da403 | 822 | got_hub_id ? id : -1, |
b7f43bf2 MAL |
823 | s->nc.name, info); |
824 | g_free(info); | |
68ac40d2 MM |
825 | } |
826 | } | |
827 | ||
094f15c5 LE |
828 | static void |
829 | net_init_slirp_configs(const StringList *fwd, int flags) | |
68ac40d2 | 830 | { |
094f15c5 LE |
831 | while (fwd) { |
832 | struct slirp_config_str *config; | |
68ac40d2 | 833 | |
094f15c5 LE |
834 | config = g_malloc0(sizeof(*config)); |
835 | pstrcpy(config->str, sizeof(config->str), fwd->value->str); | |
836 | config->flags = flags; | |
837 | config->next = slirp_configs; | |
838 | slirp_configs = config; | |
68ac40d2 | 839 | |
094f15c5 | 840 | fwd = fwd->next; |
68ac40d2 | 841 | } |
68ac40d2 MM |
842 | } |
843 | ||
63d2960b KS |
844 | static const char **slirp_dnssearch(const StringList *dnsname) |
845 | { | |
846 | const StringList *c = dnsname; | |
847 | size_t i = 0, num_opts = 0; | |
848 | const char **ret; | |
849 | ||
850 | while (c) { | |
851 | num_opts++; | |
852 | c = c->next; | |
853 | } | |
854 | ||
855 | if (num_opts == 0) { | |
856 | return NULL; | |
857 | } | |
858 | ||
859 | ret = g_malloc((num_opts + 1) * sizeof(*ret)); | |
860 | c = dnsname; | |
861 | while (c) { | |
862 | ret[i++] = c->value->str; | |
863 | c = c->next; | |
864 | } | |
865 | ret[i] = NULL; | |
866 | return ret; | |
867 | } | |
868 | ||
cebea510 | 869 | int net_init_slirp(const Netdev *netdev, const char *name, |
a30ecde6 | 870 | NetClientState *peer, Error **errp) |
68ac40d2 MM |
871 | { |
872 | struct slirp_config_str *config; | |
094f15c5 | 873 | char *vnet; |
68ac40d2 | 874 | int ret; |
094f15c5 | 875 | const NetdevUserOptions *user; |
63d2960b | 876 | const char **dnssearch; |
0b11c036 | 877 | bool ipv4 = true, ipv6 = true; |
68ac40d2 | 878 | |
f394b2e2 EB |
879 | assert(netdev->type == NET_CLIENT_DRIVER_USER); |
880 | user = &netdev->u.user; | |
68ac40d2 | 881 | |
0b11c036 ST |
882 | if ((user->has_ipv6 && user->ipv6 && !user->has_ipv4) || |
883 | (user->has_ipv4 && !user->ipv4)) { | |
884 | ipv4 = 0; | |
885 | } | |
886 | if ((user->has_ipv4 && user->ipv4 && !user->has_ipv6) || | |
887 | (user->has_ipv6 && !user->ipv6)) { | |
888 | ipv6 = 0; | |
889 | } | |
890 | ||
094f15c5 LE |
891 | vnet = user->has_net ? g_strdup(user->net) : |
892 | user->has_ip ? g_strdup_printf("%s/24", user->ip) : | |
893 | NULL; | |
68ac40d2 | 894 | |
63d2960b KS |
895 | dnssearch = slirp_dnssearch(user->dnssearch); |
896 | ||
094f15c5 | 897 | /* all optional fields are initialized to "all bits zero" */ |
68ac40d2 | 898 | |
094f15c5 LE |
899 | net_init_slirp_configs(user->hostfwd, SLIRP_CFG_HOSTFWD); |
900 | net_init_slirp_configs(user->guestfwd, 0); | |
68ac40d2 | 901 | |
0b11c036 ST |
902 | ret = net_slirp_init(peer, "user", name, user->q_restrict, |
903 | ipv4, vnet, user->host, | |
904 | ipv6, user->ipv6_prefix, user->ipv6_prefixlen, | |
d8eb3864 | 905 | user->ipv6_host, user->hostname, user->tftp, |
7aac531e | 906 | user->bootfile, user->dhcpstart, |
d8eb3864 | 907 | user->dns, user->ipv6_dns, user->smb, |
0fca92b9 FZ |
908 | user->smbserver, dnssearch, user->domainname, |
909 | user->tftp_server_name, errp); | |
68ac40d2 MM |
910 | |
911 | while (slirp_configs) { | |
912 | config = slirp_configs; | |
913 | slirp_configs = config->next; | |
7267c094 | 914 | g_free(config); |
68ac40d2 MM |
915 | } |
916 | ||
7267c094 | 917 | g_free(vnet); |
63d2960b | 918 | g_free(dnssearch); |
68ac40d2 MM |
919 | |
920 | return ret; | |
921 | } |