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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 | ||
e6dbff3f MAL |
149 | static int64_t net_slirp_clock_get_ns(void) |
150 | { | |
151 | return qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL); | |
152 | } | |
153 | ||
d846b927 MAL |
154 | static const SlirpCb slirp_cb = { |
155 | .output = net_slirp_output, | |
2addc8fb | 156 | .guest_error = net_slirp_guest_error, |
e6dbff3f | 157 | .clock_get_ns = net_slirp_clock_get_ns, |
d846b927 MAL |
158 | }; |
159 | ||
4e68f7a0 | 160 | static int net_slirp_init(NetClientState *peer, const char *model, |
68ac40d2 | 161 | const char *name, int restricted, |
0b11c036 ST |
162 | bool ipv4, const char *vnetwork, const char *vhost, |
163 | bool ipv6, const char *vprefix6, int vprefix6_len, | |
7aac531e | 164 | const char *vhost6, |
68ac40d2 MM |
165 | const char *vhostname, const char *tftp_export, |
166 | const char *bootfile, const char *vdhcp_start, | |
7aac531e YB |
167 | const char *vnameserver, const char *vnameserver6, |
168 | const char *smb_export, const char *vsmbserver, | |
f18d1375 | 169 | const char **dnssearch, const char *vdomainname, |
0fca92b9 | 170 | const char *tftp_server_name, |
f18d1375 | 171 | Error **errp) |
68ac40d2 MM |
172 | { |
173 | /* default settings according to historic slirp */ | |
174 | struct in_addr net = { .s_addr = htonl(0x0a000200) }; /* 10.0.2.0 */ | |
175 | struct in_addr mask = { .s_addr = htonl(0xffffff00) }; /* 255.255.255.0 */ | |
176 | struct in_addr host = { .s_addr = htonl(0x0a000202) }; /* 10.0.2.2 */ | |
177 | struct in_addr dhcp = { .s_addr = htonl(0x0a00020f) }; /* 10.0.2.15 */ | |
178 | struct in_addr dns = { .s_addr = htonl(0x0a000203) }; /* 10.0.2.3 */ | |
7aac531e YB |
179 | struct in6_addr ip6_prefix; |
180 | struct in6_addr ip6_host; | |
181 | struct in6_addr ip6_dns; | |
68ac40d2 MM |
182 | #ifndef _WIN32 |
183 | struct in_addr smbsrv = { .s_addr = 0 }; | |
184 | #endif | |
4e68f7a0 | 185 | NetClientState *nc; |
68ac40d2 MM |
186 | SlirpState *s; |
187 | char buf[20]; | |
188 | uint32_t addr; | |
189 | int shift; | |
190 | char *end; | |
191 | struct slirp_config_str *config; | |
192 | ||
0b11c036 | 193 | if (!ipv4 && (vnetwork || vhost || vnameserver)) { |
5c843af2 | 194 | error_setg(errp, "IPv4 disabled but netmask/host/dns provided"); |
0b11c036 ST |
195 | return -1; |
196 | } | |
197 | ||
198 | if (!ipv6 && (vprefix6 || vhost6 || vnameserver6)) { | |
5c843af2 | 199 | error_setg(errp, "IPv6 disabled but prefix/host6/dns6 provided"); |
0b11c036 ST |
200 | return -1; |
201 | } | |
202 | ||
203 | if (!ipv4 && !ipv6) { | |
204 | /* It doesn't make sense to disable both */ | |
5c843af2 | 205 | error_setg(errp, "IPv4 and IPv6 disabled"); |
0b11c036 ST |
206 | return -1; |
207 | } | |
208 | ||
68ac40d2 MM |
209 | if (vnetwork) { |
210 | if (get_str_sep(buf, sizeof(buf), &vnetwork, '/') < 0) { | |
211 | if (!inet_aton(vnetwork, &net)) { | |
5c843af2 | 212 | error_setg(errp, "Failed to parse netmask"); |
68ac40d2 MM |
213 | return -1; |
214 | } | |
215 | addr = ntohl(net.s_addr); | |
216 | if (!(addr & 0x80000000)) { | |
217 | mask.s_addr = htonl(0xff000000); /* class A */ | |
218 | } else if ((addr & 0xfff00000) == 0xac100000) { | |
219 | mask.s_addr = htonl(0xfff00000); /* priv. 172.16.0.0/12 */ | |
220 | } else if ((addr & 0xc0000000) == 0x80000000) { | |
221 | mask.s_addr = htonl(0xffff0000); /* class B */ | |
222 | } else if ((addr & 0xffff0000) == 0xc0a80000) { | |
223 | mask.s_addr = htonl(0xffff0000); /* priv. 192.168.0.0/16 */ | |
224 | } else if ((addr & 0xffff0000) == 0xc6120000) { | |
225 | mask.s_addr = htonl(0xfffe0000); /* tests 198.18.0.0/15 */ | |
226 | } else if ((addr & 0xe0000000) == 0xe0000000) { | |
227 | mask.s_addr = htonl(0xffffff00); /* class C */ | |
228 | } else { | |
229 | mask.s_addr = htonl(0xfffffff0); /* multicast/reserved */ | |
230 | } | |
231 | } else { | |
232 | if (!inet_aton(buf, &net)) { | |
5c843af2 | 233 | error_setg(errp, "Failed to parse netmask"); |
68ac40d2 MM |
234 | return -1; |
235 | } | |
236 | shift = strtol(vnetwork, &end, 10); | |
237 | if (*end != '\0') { | |
238 | if (!inet_aton(vnetwork, &mask)) { | |
5c843af2 HP |
239 | error_setg(errp, |
240 | "Failed to parse netmask (trailing chars)"); | |
68ac40d2 MM |
241 | return -1; |
242 | } | |
243 | } else if (shift < 4 || shift > 32) { | |
5c843af2 HP |
244 | error_setg(errp, |
245 | "Invalid netmask provided (must be in range 4-32)"); | |
68ac40d2 MM |
246 | return -1; |
247 | } else { | |
248 | mask.s_addr = htonl(0xffffffff << (32 - shift)); | |
249 | } | |
250 | } | |
251 | net.s_addr &= mask.s_addr; | |
252 | host.s_addr = net.s_addr | (htonl(0x0202) & ~mask.s_addr); | |
253 | dhcp.s_addr = net.s_addr | (htonl(0x020f) & ~mask.s_addr); | |
254 | dns.s_addr = net.s_addr | (htonl(0x0203) & ~mask.s_addr); | |
255 | } | |
256 | ||
257 | if (vhost && !inet_aton(vhost, &host)) { | |
5c843af2 | 258 | error_setg(errp, "Failed to parse host"); |
68ac40d2 MM |
259 | return -1; |
260 | } | |
261 | if ((host.s_addr & mask.s_addr) != net.s_addr) { | |
5c843af2 | 262 | error_setg(errp, "Host doesn't belong to network"); |
68ac40d2 MM |
263 | return -1; |
264 | } | |
265 | ||
68756ba8 | 266 | if (vnameserver && !inet_aton(vnameserver, &dns)) { |
5c843af2 | 267 | error_setg(errp, "Failed to parse DNS"); |
68ac40d2 MM |
268 | return -1; |
269 | } | |
5c843af2 HP |
270 | if ((dns.s_addr & mask.s_addr) != net.s_addr) { |
271 | error_setg(errp, "DNS doesn't belong to network"); | |
272 | return -1; | |
273 | } | |
274 | if (dns.s_addr == host.s_addr) { | |
275 | error_setg(errp, "DNS must be different from host"); | |
68ac40d2 MM |
276 | return -1; |
277 | } | |
278 | ||
68756ba8 | 279 | if (vdhcp_start && !inet_aton(vdhcp_start, &dhcp)) { |
5c843af2 | 280 | error_setg(errp, "Failed to parse DHCP start address"); |
68ac40d2 MM |
281 | return -1; |
282 | } | |
5c843af2 HP |
283 | if ((dhcp.s_addr & mask.s_addr) != net.s_addr) { |
284 | error_setg(errp, "DHCP doesn't belong to network"); | |
285 | return -1; | |
286 | } | |
287 | if (dhcp.s_addr == host.s_addr || dhcp.s_addr == dns.s_addr) { | |
288 | error_setg(errp, "DNS must be different from host and DNS"); | |
68ac40d2 MM |
289 | return -1; |
290 | } | |
291 | ||
292 | #ifndef _WIN32 | |
293 | if (vsmbserver && !inet_aton(vsmbserver, &smbsrv)) { | |
5c843af2 | 294 | error_setg(errp, "Failed to parse SMB address"); |
68ac40d2 MM |
295 | return -1; |
296 | } | |
297 | #endif | |
298 | ||
7aac531e YB |
299 | if (!vprefix6) { |
300 | vprefix6 = "fec0::"; | |
301 | } | |
302 | if (!inet_pton(AF_INET6, vprefix6, &ip6_prefix)) { | |
5c843af2 | 303 | error_setg(errp, "Failed to parse IPv6 prefix"); |
7aac531e YB |
304 | return -1; |
305 | } | |
7aac531e YB |
306 | |
307 | if (!vprefix6_len) { | |
308 | vprefix6_len = 64; | |
309 | } | |
310 | if (vprefix6_len < 0 || vprefix6_len > 126) { | |
5c843af2 HP |
311 | error_setg(errp, |
312 | "Invalid prefix provided (prefix len must be in range 0-126"); | |
7aac531e YB |
313 | return -1; |
314 | } | |
315 | ||
316 | if (vhost6) { | |
7aac531e | 317 | if (!inet_pton(AF_INET6, vhost6, &ip6_host)) { |
5c843af2 | 318 | error_setg(errp, "Failed to parse IPv6 host"); |
7aac531e YB |
319 | return -1; |
320 | } | |
321 | if (!in6_equal_net(&ip6_prefix, &ip6_host, vprefix6_len)) { | |
5c843af2 | 322 | error_setg(errp, "IPv6 Host doesn't belong to network"); |
7aac531e YB |
323 | return -1; |
324 | } | |
7aac531e YB |
325 | } else { |
326 | ip6_host = ip6_prefix; | |
327 | ip6_host.s6_addr[15] |= 2; | |
328 | } | |
329 | ||
330 | if (vnameserver6) { | |
7aac531e | 331 | if (!inet_pton(AF_INET6, vnameserver6, &ip6_dns)) { |
5c843af2 | 332 | error_setg(errp, "Failed to parse IPv6 DNS"); |
7aac531e YB |
333 | return -1; |
334 | } | |
335 | if (!in6_equal_net(&ip6_prefix, &ip6_dns, vprefix6_len)) { | |
5c843af2 | 336 | error_setg(errp, "IPv6 DNS doesn't belong to network"); |
7aac531e YB |
337 | return -1; |
338 | } | |
7aac531e YB |
339 | } else { |
340 | ip6_dns = ip6_prefix; | |
341 | ip6_dns.s6_addr[15] |= 3; | |
342 | } | |
343 | ||
f18d1375 BD |
344 | if (vdomainname && !*vdomainname) { |
345 | error_setg(errp, "'domainname' parameter cannot be empty"); | |
346 | return -1; | |
347 | } | |
348 | ||
6e157a03 FZ |
349 | if (vdomainname && strlen(vdomainname) > 255) { |
350 | error_setg(errp, "'domainname' parameter cannot exceed 255 bytes"); | |
351 | return -1; | |
352 | } | |
353 | ||
354 | if (vhostname && strlen(vhostname) > 255) { | |
355 | error_setg(errp, "'vhostname' parameter cannot exceed 255 bytes"); | |
356 | return -1; | |
357 | } | |
7aac531e | 358 | |
0fca92b9 FZ |
359 | if (tftp_server_name && strlen(tftp_server_name) > 255) { |
360 | error_setg(errp, "'tftp-server-name' parameter cannot exceed 255 bytes"); | |
361 | return -1; | |
362 | } | |
363 | ||
ab5f3f84 | 364 | nc = qemu_new_net_client(&net_slirp_info, peer, model, name); |
ce20b5be MM |
365 | |
366 | snprintf(nc->info_str, sizeof(nc->info_str), | |
c54ed5bc JK |
367 | "net=%s,restrict=%s", inet_ntoa(net), |
368 | restricted ? "on" : "off"); | |
ce20b5be MM |
369 | |
370 | s = DO_UPCAST(SlirpState, nc, nc); | |
371 | ||
0b11c036 ST |
372 | s->slirp = slirp_init(restricted, ipv4, net, mask, host, |
373 | ipv6, ip6_prefix, vprefix6_len, ip6_host, | |
0fca92b9 FZ |
374 | vhostname, tftp_server_name, |
375 | tftp_export, bootfile, dhcp, | |
62c1d2c4 | 376 | dns, ip6_dns, dnssearch, vdomainname, |
d846b927 | 377 | &slirp_cb, s); |
68ac40d2 MM |
378 | QTAILQ_INSERT_TAIL(&slirp_stacks, s, entry); |
379 | ||
380 | for (config = slirp_configs; config; config = config->next) { | |
381 | if (config->flags & SLIRP_CFG_HOSTFWD) { | |
d18572dd | 382 | if (slirp_hostfwd(s, config->str, errp) < 0) { |
ce20b5be | 383 | goto error; |
5c843af2 | 384 | } |
68ac40d2 | 385 | } else { |
d18572dd | 386 | if (slirp_guestfwd(s, config->str, errp) < 0) { |
ce20b5be | 387 | goto error; |
5c843af2 | 388 | } |
68ac40d2 MM |
389 | } |
390 | } | |
391 | #ifndef _WIN32 | |
68ac40d2 | 392 | if (smb_export) { |
5c843af2 | 393 | if (slirp_smb(s, smb_export, smbsrv, errp) < 0) { |
ce20b5be | 394 | goto error; |
5c843af2 | 395 | } |
68ac40d2 MM |
396 | } |
397 | #endif | |
398 | ||
f6c2e66a PB |
399 | s->exit_notifier.notify = slirp_smb_exit; |
400 | qemu_add_exit_notifier(&s->exit_notifier); | |
68ac40d2 | 401 | return 0; |
ce20b5be MM |
402 | |
403 | error: | |
b20c6b9e | 404 | qemu_del_net_client(nc); |
ce20b5be | 405 | return -1; |
68ac40d2 MM |
406 | } |
407 | ||
93653066 TH |
408 | static SlirpState *slirp_lookup(Monitor *mon, const char *hub_id, |
409 | const char *name) | |
68ac40d2 | 410 | { |
93653066 | 411 | if (name) { |
4e68f7a0 | 412 | NetClientState *nc; |
93653066 TH |
413 | if (hub_id) { |
414 | nc = net_hub_find_client_by_name(strtol(hub_id, NULL, 0), name); | |
415 | if (!nc) { | |
442da403 | 416 | monitor_printf(mon, "unrecognized (hub-id, stackname) pair\n"); |
93653066 TH |
417 | return NULL; |
418 | } | |
68cb29ea TH |
419 | warn_report("Using 'hub-id' is deprecated, specify the netdev id " |
420 | "directly instead"); | |
93653066 TH |
421 | } else { |
422 | nc = qemu_find_netdev(name); | |
423 | if (!nc) { | |
424 | monitor_printf(mon, "unrecognized netdev id '%s'\n", name); | |
425 | return NULL; | |
426 | } | |
68ac40d2 | 427 | } |
ce20b5be | 428 | if (strcmp(nc->model, "user")) { |
68ac40d2 MM |
429 | monitor_printf(mon, "invalid device specified\n"); |
430 | return NULL; | |
431 | } | |
ce20b5be | 432 | return DO_UPCAST(SlirpState, nc, nc); |
68ac40d2 MM |
433 | } else { |
434 | if (QTAILQ_EMPTY(&slirp_stacks)) { | |
435 | monitor_printf(mon, "user mode network stack not in use\n"); | |
436 | return NULL; | |
437 | } | |
438 | return QTAILQ_FIRST(&slirp_stacks); | |
439 | } | |
440 | } | |
441 | ||
3e5a50d6 | 442 | void hmp_hostfwd_remove(Monitor *mon, const QDict *qdict) |
68ac40d2 MM |
443 | { |
444 | struct in_addr host_addr = { .s_addr = INADDR_ANY }; | |
445 | int host_port; | |
e30e5eb6 | 446 | char buf[256]; |
68ac40d2 MM |
447 | const char *src_str, *p; |
448 | SlirpState *s; | |
449 | int is_udp = 0; | |
450 | int err; | |
451 | const char *arg1 = qdict_get_str(qdict, "arg1"); | |
452 | const char *arg2 = qdict_get_try_str(qdict, "arg2"); | |
453 | const char *arg3 = qdict_get_try_str(qdict, "arg3"); | |
454 | ||
93653066 | 455 | if (arg3) { |
68ac40d2 MM |
456 | s = slirp_lookup(mon, arg1, arg2); |
457 | src_str = arg3; | |
93653066 TH |
458 | } else if (arg2) { |
459 | s = slirp_lookup(mon, NULL, arg1); | |
460 | src_str = arg2; | |
68ac40d2 MM |
461 | } else { |
462 | s = slirp_lookup(mon, NULL, NULL); | |
463 | src_str = arg1; | |
464 | } | |
465 | if (!s) { | |
466 | return; | |
467 | } | |
468 | ||
68ac40d2 | 469 | p = src_str; |
e30e5eb6 MA |
470 | if (!p || get_str_sep(buf, sizeof(buf), &p, ':') < 0) { |
471 | goto fail_syntax; | |
472 | } | |
68ac40d2 MM |
473 | |
474 | if (!strcmp(buf, "tcp") || buf[0] == '\0') { | |
475 | is_udp = 0; | |
476 | } else if (!strcmp(buf, "udp")) { | |
477 | is_udp = 1; | |
478 | } else { | |
479 | goto fail_syntax; | |
480 | } | |
481 | ||
482 | if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) { | |
483 | goto fail_syntax; | |
484 | } | |
485 | if (buf[0] != '\0' && !inet_aton(buf, &host_addr)) { | |
486 | goto fail_syntax; | |
487 | } | |
488 | ||
1fb3f7f2 NA |
489 | if (qemu_strtoi(p, NULL, 10, &host_port)) { |
490 | goto fail_syntax; | |
491 | } | |
68ac40d2 | 492 | |
70381662 | 493 | err = slirp_remove_hostfwd(s->slirp, is_udp, host_addr, host_port); |
68ac40d2 MM |
494 | |
495 | monitor_printf(mon, "host forwarding rule for %s %s\n", src_str, | |
b15ba6c9 | 496 | err ? "not found" : "removed"); |
68ac40d2 MM |
497 | return; |
498 | ||
499 | fail_syntax: | |
500 | monitor_printf(mon, "invalid format\n"); | |
501 | } | |
502 | ||
d18572dd | 503 | static int slirp_hostfwd(SlirpState *s, const char *redir_str, Error **errp) |
68ac40d2 MM |
504 | { |
505 | struct in_addr host_addr = { .s_addr = INADDR_ANY }; | |
506 | struct in_addr guest_addr = { .s_addr = 0 }; | |
507 | int host_port, guest_port; | |
508 | const char *p; | |
509 | char buf[256]; | |
510 | int is_udp; | |
511 | char *end; | |
0e7e4fb0 | 512 | const char *fail_reason = "Unknown reason"; |
68ac40d2 MM |
513 | |
514 | p = redir_str; | |
515 | if (!p || get_str_sep(buf, sizeof(buf), &p, ':') < 0) { | |
0e7e4fb0 | 516 | fail_reason = "No : separators"; |
68ac40d2 MM |
517 | goto fail_syntax; |
518 | } | |
519 | if (!strcmp(buf, "tcp") || buf[0] == '\0') { | |
520 | is_udp = 0; | |
521 | } else if (!strcmp(buf, "udp")) { | |
522 | is_udp = 1; | |
523 | } else { | |
0e7e4fb0 | 524 | fail_reason = "Bad protocol name"; |
68ac40d2 MM |
525 | goto fail_syntax; |
526 | } | |
527 | ||
d18572dd TH |
528 | if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) { |
529 | fail_reason = "Missing : separator"; | |
530 | goto fail_syntax; | |
531 | } | |
532 | if (buf[0] != '\0' && !inet_aton(buf, &host_addr)) { | |
533 | fail_reason = "Bad host address"; | |
534 | goto fail_syntax; | |
68ac40d2 MM |
535 | } |
536 | ||
d18572dd | 537 | if (get_str_sep(buf, sizeof(buf), &p, '-') < 0) { |
0e7e4fb0 | 538 | fail_reason = "Bad host port separator"; |
68ac40d2 MM |
539 | goto fail_syntax; |
540 | } | |
541 | host_port = strtol(buf, &end, 0); | |
0bed71ed | 542 | if (*end != '\0' || host_port < 0 || host_port > 65535) { |
0e7e4fb0 | 543 | fail_reason = "Bad host port"; |
68ac40d2 MM |
544 | goto fail_syntax; |
545 | } | |
546 | ||
547 | if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) { | |
0e7e4fb0 | 548 | fail_reason = "Missing guest address"; |
68ac40d2 MM |
549 | goto fail_syntax; |
550 | } | |
551 | if (buf[0] != '\0' && !inet_aton(buf, &guest_addr)) { | |
0e7e4fb0 | 552 | fail_reason = "Bad guest address"; |
68ac40d2 MM |
553 | goto fail_syntax; |
554 | } | |
555 | ||
556 | guest_port = strtol(p, &end, 0); | |
557 | if (*end != '\0' || guest_port < 1 || guest_port > 65535) { | |
0e7e4fb0 | 558 | fail_reason = "Bad guest port"; |
68ac40d2 MM |
559 | goto fail_syntax; |
560 | } | |
561 | ||
562 | if (slirp_add_hostfwd(s->slirp, is_udp, host_addr, host_port, guest_addr, | |
563 | guest_port) < 0) { | |
5c843af2 HP |
564 | error_setg(errp, "Could not set up host forwarding rule '%s'", |
565 | redir_str); | |
68ac40d2 MM |
566 | return -1; |
567 | } | |
568 | return 0; | |
569 | ||
570 | fail_syntax: | |
0e7e4fb0 DDAG |
571 | error_setg(errp, "Invalid host forwarding rule '%s' (%s)", redir_str, |
572 | fail_reason); | |
68ac40d2 MM |
573 | return -1; |
574 | } | |
575 | ||
3e5a50d6 | 576 | void hmp_hostfwd_add(Monitor *mon, const QDict *qdict) |
68ac40d2 MM |
577 | { |
578 | const char *redir_str; | |
579 | SlirpState *s; | |
580 | const char *arg1 = qdict_get_str(qdict, "arg1"); | |
581 | const char *arg2 = qdict_get_try_str(qdict, "arg2"); | |
582 | const char *arg3 = qdict_get_try_str(qdict, "arg3"); | |
583 | ||
93653066 | 584 | if (arg3) { |
68ac40d2 MM |
585 | s = slirp_lookup(mon, arg1, arg2); |
586 | redir_str = arg3; | |
93653066 TH |
587 | } else if (arg2) { |
588 | s = slirp_lookup(mon, NULL, arg1); | |
589 | redir_str = arg2; | |
68ac40d2 MM |
590 | } else { |
591 | s = slirp_lookup(mon, NULL, NULL); | |
592 | redir_str = arg1; | |
593 | } | |
594 | if (s) { | |
5c843af2 | 595 | Error *err = NULL; |
d18572dd | 596 | if (slirp_hostfwd(s, redir_str, &err) < 0) { |
5c843af2 HP |
597 | error_report_err(err); |
598 | } | |
68ac40d2 MM |
599 | } |
600 | ||
601 | } | |
602 | ||
68ac40d2 MM |
603 | #ifndef _WIN32 |
604 | ||
605 | /* automatic user mode samba server configuration */ | |
606 | static void slirp_smb_cleanup(SlirpState *s) | |
607 | { | |
5a01e99f | 608 | int ret; |
68ac40d2 | 609 | |
f95cc8b6 DDAG |
610 | if (s->smb_dir) { |
611 | gchar *cmd = g_strdup_printf("rm -rf %s", s->smb_dir); | |
5a01e99f | 612 | ret = system(cmd); |
24ac07de | 613 | if (ret == -1 || !WIFEXITED(ret)) { |
1ecda02b | 614 | error_report("'%s' failed.", cmd); |
5a01e99f | 615 | } else if (WEXITSTATUS(ret)) { |
1ecda02b MA |
616 | error_report("'%s' failed. Error code: %d", |
617 | cmd, WEXITSTATUS(ret)); | |
5a01e99f | 618 | } |
f95cc8b6 DDAG |
619 | g_free(cmd); |
620 | g_free(s->smb_dir); | |
621 | s->smb_dir = NULL; | |
68ac40d2 MM |
622 | } |
623 | } | |
624 | ||
625 | static int slirp_smb(SlirpState* s, const char *exported_dir, | |
5c843af2 | 626 | struct in_addr vserver_addr, Error **errp) |
68ac40d2 | 627 | { |
f95cc8b6 DDAG |
628 | char *smb_conf; |
629 | char *smb_cmdline; | |
1cb1c5d1 | 630 | struct passwd *passwd; |
68ac40d2 MM |
631 | FILE *f; |
632 | ||
1cb1c5d1 JK |
633 | passwd = getpwuid(geteuid()); |
634 | if (!passwd) { | |
5c843af2 | 635 | error_setg(errp, "Failed to retrieve user name"); |
1cb1c5d1 JK |
636 | return -1; |
637 | } | |
638 | ||
927d811b | 639 | if (access(CONFIG_SMBD_COMMAND, F_OK)) { |
5c843af2 HP |
640 | error_setg(errp, "Could not find '%s', please install it", |
641 | CONFIG_SMBD_COMMAND); | |
927d811b DH |
642 | return -1; |
643 | } | |
644 | ||
645 | if (access(exported_dir, R_OK | X_OK)) { | |
5c843af2 HP |
646 | error_setg(errp, "Error accessing shared directory '%s': %s", |
647 | exported_dir, strerror(errno)); | |
927d811b DH |
648 | return -1; |
649 | } | |
650 | ||
f95cc8b6 DDAG |
651 | s->smb_dir = g_dir_make_tmp("qemu-smb.XXXXXX", NULL); |
652 | if (!s->smb_dir) { | |
5c843af2 | 653 | error_setg(errp, "Could not create samba server dir"); |
68ac40d2 MM |
654 | return -1; |
655 | } | |
f95cc8b6 | 656 | smb_conf = g_strdup_printf("%s/%s", s->smb_dir, "smb.conf"); |
68ac40d2 MM |
657 | |
658 | f = fopen(smb_conf, "w"); | |
659 | if (!f) { | |
660 | slirp_smb_cleanup(s); | |
5c843af2 HP |
661 | error_setg(errp, |
662 | "Could not create samba server configuration file '%s'", | |
663 | smb_conf); | |
f95cc8b6 | 664 | g_free(smb_conf); |
68ac40d2 MM |
665 | return -1; |
666 | } | |
667 | fprintf(f, | |
668 | "[global]\n" | |
669 | "private dir=%s\n" | |
7912d04b PW |
670 | "interfaces=127.0.0.1\n" |
671 | "bind interfaces only=yes\n" | |
68ac40d2 MM |
672 | "pid directory=%s\n" |
673 | "lock directory=%s\n" | |
276eda57 | 674 | "state directory=%s\n" |
7912d04b | 675 | "cache directory=%s\n" |
b87b8a8b | 676 | "ncalrpc dir=%s/ncalrpc\n" |
68ac40d2 MM |
677 | "log file=%s/log.smbd\n" |
678 | "smb passwd file=%s/smbpasswd\n" | |
c2804ee6 MB |
679 | "security = user\n" |
680 | "map to guest = Bad User\n" | |
7912d04b PW |
681 | "load printers = no\n" |
682 | "printing = bsd\n" | |
683 | "disable spoolss = yes\n" | |
684 | "usershare max shares = 0\n" | |
68ac40d2 MM |
685 | "[qemu]\n" |
686 | "path=%s\n" | |
687 | "read only=no\n" | |
1cb1c5d1 JK |
688 | "guest ok=yes\n" |
689 | "force user=%s\n", | |
68ac40d2 MM |
690 | s->smb_dir, |
691 | s->smb_dir, | |
692 | s->smb_dir, | |
693 | s->smb_dir, | |
694 | s->smb_dir, | |
276eda57 | 695 | s->smb_dir, |
b87b8a8b | 696 | s->smb_dir, |
7912d04b | 697 | s->smb_dir, |
1cb1c5d1 JK |
698 | exported_dir, |
699 | passwd->pw_name | |
68ac40d2 MM |
700 | ); |
701 | fclose(f); | |
702 | ||
f95cc8b6 | 703 | smb_cmdline = g_strdup_printf("%s -l %s -s %s", |
44d8d2b2 | 704 | CONFIG_SMBD_COMMAND, s->smb_dir, smb_conf); |
f95cc8b6 | 705 | g_free(smb_conf); |
68ac40d2 | 706 | |
44b4ff24 MAL |
707 | if (slirp_add_exec(s->slirp, smb_cmdline, &vserver_addr, 139) < 0 || |
708 | slirp_add_exec(s->slirp, smb_cmdline, &vserver_addr, 445) < 0) { | |
68ac40d2 | 709 | slirp_smb_cleanup(s); |
f95cc8b6 | 710 | g_free(smb_cmdline); |
5c843af2 | 711 | error_setg(errp, "Conflicting/invalid smbserver address"); |
68ac40d2 MM |
712 | return -1; |
713 | } | |
f95cc8b6 | 714 | g_free(smb_cmdline); |
68ac40d2 MM |
715 | return 0; |
716 | } | |
717 | ||
68ac40d2 MM |
718 | #endif /* !defined(_WIN32) */ |
719 | ||
720 | struct GuestFwd { | |
32a6ebec | 721 | CharBackend hd; |
68ac40d2 MM |
722 | struct in_addr server; |
723 | int port; | |
724 | Slirp *slirp; | |
725 | }; | |
726 | ||
727 | static int guestfwd_can_read(void *opaque) | |
728 | { | |
729 | struct GuestFwd *fwd = opaque; | |
730 | return slirp_socket_can_recv(fwd->slirp, fwd->server, fwd->port); | |
731 | } | |
732 | ||
733 | static void guestfwd_read(void *opaque, const uint8_t *buf, int size) | |
734 | { | |
735 | struct GuestFwd *fwd = opaque; | |
736 | slirp_socket_recv(fwd->slirp, fwd->server, fwd->port, buf, size); | |
737 | } | |
738 | ||
44b4ff24 MAL |
739 | static int guestfwd_write(const void *buf, size_t len, void *chr) |
740 | { | |
741 | return qemu_chr_fe_write_all(chr, buf, len); | |
742 | } | |
743 | ||
d18572dd | 744 | static int slirp_guestfwd(SlirpState *s, const char *config_str, Error **errp) |
68ac40d2 MM |
745 | { |
746 | struct in_addr server = { .s_addr = 0 }; | |
747 | struct GuestFwd *fwd; | |
748 | const char *p; | |
749 | char buf[128]; | |
750 | char *end; | |
751 | int port; | |
752 | ||
753 | p = config_str; | |
d18572dd TH |
754 | if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) { |
755 | goto fail_syntax; | |
756 | } | |
757 | if (strcmp(buf, "tcp") && buf[0] != '\0') { | |
758 | goto fail_syntax; | |
759 | } | |
760 | if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) { | |
761 | goto fail_syntax; | |
762 | } | |
763 | if (buf[0] != '\0' && !inet_aton(buf, &server)) { | |
764 | goto fail_syntax; | |
765 | } | |
766 | if (get_str_sep(buf, sizeof(buf), &p, '-') < 0) { | |
767 | goto fail_syntax; | |
68ac40d2 MM |
768 | } |
769 | port = strtol(buf, &end, 10); | |
770 | if (*end != '\0' || port < 1 || port > 65535) { | |
771 | goto fail_syntax; | |
772 | } | |
773 | ||
a9899996 | 774 | snprintf(buf, sizeof(buf), "guestfwd.tcp.%d", port); |
68ac40d2 | 775 | |
3624730a | 776 | if (g_str_has_prefix(p, "cmd:")) { |
44b4ff24 | 777 | if (slirp_add_exec(s->slirp, &p[4], &server, port) < 0) { |
5c843af2 HP |
778 | error_setg(errp, "Conflicting/invalid host:port in guest " |
779 | "forwarding rule '%s'", config_str); | |
b412eb61 AG |
780 | return -1; |
781 | } | |
782 | } else { | |
32a6ebec | 783 | Error *err = NULL; |
95e30b2a MAL |
784 | /* |
785 | * FIXME: sure we want to support implicit | |
786 | * muxed monitors here? | |
787 | */ | |
788 | Chardev *chr = qemu_chr_new_mux_mon(buf, p); | |
32a6ebec MAL |
789 | |
790 | if (!chr) { | |
5c843af2 HP |
791 | error_setg(errp, "Could not open guest forwarding device '%s'", |
792 | buf); | |
32a6ebec MAL |
793 | return -1; |
794 | } | |
795 | ||
796 | fwd = g_new(struct GuestFwd, 1); | |
797 | qemu_chr_fe_init(&fwd->hd, chr, &err); | |
798 | if (err) { | |
5c843af2 | 799 | error_propagate(errp, err); |
b412eb61 AG |
800 | g_free(fwd); |
801 | return -1; | |
802 | } | |
68ac40d2 | 803 | |
44b4ff24 MAL |
804 | if (slirp_add_guestfwd(s->slirp, guestfwd_write, &fwd->hd, |
805 | &server, port) < 0) { | |
5c843af2 HP |
806 | error_setg(errp, "Conflicting/invalid host:port in guest " |
807 | "forwarding rule '%s'", config_str); | |
b412eb61 AG |
808 | g_free(fwd); |
809 | return -1; | |
810 | } | |
811 | fwd->server = server; | |
812 | fwd->port = port; | |
813 | fwd->slirp = s->slirp; | |
814 | ||
5345fdb4 | 815 | qemu_chr_fe_set_handlers(&fwd->hd, guestfwd_can_read, guestfwd_read, |
81517ba3 | 816 | NULL, NULL, fwd, NULL, true); |
b412eb61 | 817 | } |
68ac40d2 MM |
818 | return 0; |
819 | ||
820 | fail_syntax: | |
5c843af2 | 821 | error_setg(errp, "Invalid guest forwarding rule '%s'", config_str); |
68ac40d2 MM |
822 | return -1; |
823 | } | |
824 | ||
1ce6be24 | 825 | void hmp_info_usernet(Monitor *mon, const QDict *qdict) |
68ac40d2 MM |
826 | { |
827 | SlirpState *s; | |
828 | ||
829 | QTAILQ_FOREACH(s, &slirp_stacks, entry) { | |
90d87a33 | 830 | int id; |
442da403 | 831 | bool got_hub_id = net_hub_id_for_client(&s->nc, &id) == 0; |
b7f43bf2 MAL |
832 | char *info = slirp_connection_info(s->slirp); |
833 | monitor_printf(mon, "Hub %d (%s):\n%s", | |
442da403 | 834 | got_hub_id ? id : -1, |
b7f43bf2 MAL |
835 | s->nc.name, info); |
836 | g_free(info); | |
68ac40d2 MM |
837 | } |
838 | } | |
839 | ||
094f15c5 LE |
840 | static void |
841 | net_init_slirp_configs(const StringList *fwd, int flags) | |
68ac40d2 | 842 | { |
094f15c5 LE |
843 | while (fwd) { |
844 | struct slirp_config_str *config; | |
68ac40d2 | 845 | |
094f15c5 LE |
846 | config = g_malloc0(sizeof(*config)); |
847 | pstrcpy(config->str, sizeof(config->str), fwd->value->str); | |
848 | config->flags = flags; | |
849 | config->next = slirp_configs; | |
850 | slirp_configs = config; | |
68ac40d2 | 851 | |
094f15c5 | 852 | fwd = fwd->next; |
68ac40d2 | 853 | } |
68ac40d2 MM |
854 | } |
855 | ||
63d2960b KS |
856 | static const char **slirp_dnssearch(const StringList *dnsname) |
857 | { | |
858 | const StringList *c = dnsname; | |
859 | size_t i = 0, num_opts = 0; | |
860 | const char **ret; | |
861 | ||
862 | while (c) { | |
863 | num_opts++; | |
864 | c = c->next; | |
865 | } | |
866 | ||
867 | if (num_opts == 0) { | |
868 | return NULL; | |
869 | } | |
870 | ||
871 | ret = g_malloc((num_opts + 1) * sizeof(*ret)); | |
872 | c = dnsname; | |
873 | while (c) { | |
874 | ret[i++] = c->value->str; | |
875 | c = c->next; | |
876 | } | |
877 | ret[i] = NULL; | |
878 | return ret; | |
879 | } | |
880 | ||
cebea510 | 881 | int net_init_slirp(const Netdev *netdev, const char *name, |
a30ecde6 | 882 | NetClientState *peer, Error **errp) |
68ac40d2 MM |
883 | { |
884 | struct slirp_config_str *config; | |
094f15c5 | 885 | char *vnet; |
68ac40d2 | 886 | int ret; |
094f15c5 | 887 | const NetdevUserOptions *user; |
63d2960b | 888 | const char **dnssearch; |
0b11c036 | 889 | bool ipv4 = true, ipv6 = true; |
68ac40d2 | 890 | |
f394b2e2 EB |
891 | assert(netdev->type == NET_CLIENT_DRIVER_USER); |
892 | user = &netdev->u.user; | |
68ac40d2 | 893 | |
0b11c036 ST |
894 | if ((user->has_ipv6 && user->ipv6 && !user->has_ipv4) || |
895 | (user->has_ipv4 && !user->ipv4)) { | |
896 | ipv4 = 0; | |
897 | } | |
898 | if ((user->has_ipv4 && user->ipv4 && !user->has_ipv6) || | |
899 | (user->has_ipv6 && !user->ipv6)) { | |
900 | ipv6 = 0; | |
901 | } | |
902 | ||
094f15c5 LE |
903 | vnet = user->has_net ? g_strdup(user->net) : |
904 | user->has_ip ? g_strdup_printf("%s/24", user->ip) : | |
905 | NULL; | |
68ac40d2 | 906 | |
63d2960b KS |
907 | dnssearch = slirp_dnssearch(user->dnssearch); |
908 | ||
094f15c5 | 909 | /* all optional fields are initialized to "all bits zero" */ |
68ac40d2 | 910 | |
094f15c5 LE |
911 | net_init_slirp_configs(user->hostfwd, SLIRP_CFG_HOSTFWD); |
912 | net_init_slirp_configs(user->guestfwd, 0); | |
68ac40d2 | 913 | |
0b11c036 ST |
914 | ret = net_slirp_init(peer, "user", name, user->q_restrict, |
915 | ipv4, vnet, user->host, | |
916 | ipv6, user->ipv6_prefix, user->ipv6_prefixlen, | |
d8eb3864 | 917 | user->ipv6_host, user->hostname, user->tftp, |
7aac531e | 918 | user->bootfile, user->dhcpstart, |
d8eb3864 | 919 | user->dns, user->ipv6_dns, user->smb, |
0fca92b9 FZ |
920 | user->smbserver, dnssearch, user->domainname, |
921 | user->tftp_server_name, errp); | |
68ac40d2 MM |
922 | |
923 | while (slirp_configs) { | |
924 | config = slirp_configs; | |
925 | slirp_configs = config->next; | |
7267c094 | 926 | g_free(config); |
68ac40d2 MM |
927 | } |
928 | ||
7267c094 | 929 | g_free(vnet); |
63d2960b | 930 | g_free(dnssearch); |
68ac40d2 MM |
931 | |
932 | return ret; | |
933 | } |