blob: eb9a456ed49ef5f0b0e250528d01499c3869e670 [file] [log] [blame]
Mark McLoughlin68ac40d2009-11-25 18:48:54 +00001/*
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 */
Markus Armbruster452fcdb2018-02-01 12:18:39 +010024
Peter Maydell2744d922016-01-29 17:50:00 +000025#include "qemu/osdep.h"
Marc-André Lureau2addc8f2018-11-14 16:36:33 +040026#include "qemu/log.h"
Mark McLoughlin68ac40d2009-11-25 18:48:54 +000027#include "net/slirp.h"
28
Mark McLoughlin68ac40d2009-11-25 18:48:54 +000029
Paolo Bonzini35acbb32021-10-13 13:43:36 +020030#if defined(CONFIG_SMBD_COMMAND)
Jan Kiszka1cb1c5d2012-07-05 19:35:57 +020031#include <pwd.h>
Blue Swirl28b150b2010-01-27 17:47:33 +000032#include <sys/wait.h>
33#endif
Bin Meng969e50b2021-03-17 14:26:29 +080034#include "net/eth.h"
Paolo Bonzini1422e322012-10-24 08:43:34 +020035#include "net/net.h"
Paolo Bonzinia245fc12012-09-17 18:43:51 +020036#include "clients.h"
37#include "hub.h"
Paolo Bonzini83c90892012-12-17 18:19:49 +010038#include "monitor/monitor.h"
Markus Armbrusterd49b6832015-03-17 18:29:20 +010039#include "qemu/error-report.h"
Paolo Bonzini1de7afc2012-12-17 18:20:00 +010040#include "qemu/sockets.h"
Marc-André Lureau675b9b52019-02-12 17:25:23 +010041#include <libslirp.h>
Marc-André Lureau4d43a602017-01-26 18:26:44 +040042#include "chardev/char-fe.h"
Paolo Bonzinif6c2e662016-07-12 09:57:12 +020043#include "sysemu/sysemu.h"
Veronia Bahaaf348b6d2016-03-20 19:16:19 +020044#include "qemu/cutils.h"
Marc-André Lureau32a6ebe2016-10-22 12:52:52 +030045#include "qapi/error.h"
Markus Armbruster452fcdb2018-02-01 12:18:39 +010046#include "qapi/qmp/qdict.h"
Marc-André Lureaue05ae1d2018-11-14 16:36:40 +040047#include "util.h"
Marc-André Lureaud8903442019-02-12 17:25:19 +010048#include "migration/register.h"
Juan Quintelab23db4c2023-10-20 11:07:23 +020049#include "migration/vmstate.h"
Marc-André Lureaud8903442019-02-12 17:25:19 +010050#include "migration/qemu-file-types.h"
Mark McLoughlin68ac40d2009-11-25 18:48:54 +000051
52static int get_str_sep(char *buf, int buf_size, const char **pp, int sep)
53{
54 const char *p, *p1;
55 int len;
56 p = *pp;
57 p1 = strchr(p, sep);
58 if (!p1)
59 return -1;
60 len = p1 - p;
61 p1++;
62 if (buf_size > 0) {
63 if (len > buf_size - 1)
64 len = buf_size - 1;
65 memcpy(buf, p, len);
66 buf[len] = '\0';
67 }
68 *pp = p1;
69 return 0;
70}
71
72/* slirp network adapter */
73
74#define SLIRP_CFG_HOSTFWD 1
Mark McLoughlin68ac40d2009-11-25 18:48:54 +000075
76struct slirp_config_str {
77 struct slirp_config_str *next;
78 int flags;
79 char str[1024];
Mark McLoughlin68ac40d2009-11-25 18:48:54 +000080};
81
Marc-André Lureau8d45a3b2019-01-17 15:43:35 +040082struct GuestFwd {
83 CharBackend hd;
84 struct in_addr server;
85 int port;
86 Slirp *slirp;
87};
88
Mark McLoughlin68ac40d2009-11-25 18:48:54 +000089typedef struct SlirpState {
Stefan Hajnoczi4e68f7a2012-07-24 16:35:13 +010090 NetClientState nc;
Mark McLoughlin68ac40d2009-11-25 18:48:54 +000091 QTAILQ_ENTRY(SlirpState) entry;
Mark McLoughlin68ac40d2009-11-25 18:48:54 +000092 Slirp *slirp;
Marc-André Lureau1ab67b92019-01-17 15:43:55 +040093 Notifier poll_notifier;
Paolo Bonzinif6c2e662016-07-12 09:57:12 +020094 Notifier exit_notifier;
Paolo Bonzini35acbb32021-10-13 13:43:36 +020095#if defined(CONFIG_SMBD_COMMAND)
Dr. David Alan Gilbertf95cc8b2017-04-07 15:32:54 +010096 gchar *smb_dir;
Mark McLoughlin68ac40d2009-11-25 18:48:54 +000097#endif
Marc-André Lureau8d45a3b2019-01-17 15:43:35 +040098 GSList *fwd;
Mark McLoughlin68ac40d2009-11-25 18:48:54 +000099} SlirpState;
100
101static struct slirp_config_str *slirp_configs;
Paolo Bonzinib58deb32018-12-06 11:58:10 +0100102static QTAILQ_HEAD(, SlirpState) slirp_stacks =
Mark McLoughlin68ac40d2009-11-25 18:48:54 +0000103 QTAILQ_HEAD_INITIALIZER(slirp_stacks);
104
Thomas Huthd18572d2018-08-22 15:43:30 +0200105static int slirp_hostfwd(SlirpState *s, const char *redir_str, Error **errp);
106static int slirp_guestfwd(SlirpState *s, const char *config_str, Error **errp);
Mark McLoughlin68ac40d2009-11-25 18:48:54 +0000107
Paolo Bonzini35acbb32021-10-13 13:43:36 +0200108#if defined(CONFIG_SMBD_COMMAND)
Mark McLoughlin68ac40d2009-11-25 18:48:54 +0000109static int slirp_smb(SlirpState *s, const char *exported_dir,
Hervé Poussineau5c843af2017-07-15 18:43:50 +0200110 struct in_addr vserver_addr, Error **errp);
Mark McLoughlin68ac40d2009-11-25 18:48:54 +0000111static void slirp_smb_cleanup(SlirpState *s);
112#else
113static inline void slirp_smb_cleanup(SlirpState *s) { }
114#endif
115
Marc-André Lureau625a5262019-01-17 15:43:54 +0400116static ssize_t net_slirp_send_packet(const void *pkt, size_t pkt_len,
117 void *opaque)
Mark McLoughlin68ac40d2009-11-25 18:48:54 +0000118{
119 SlirpState *s = opaque;
Bin Meng969e50b2021-03-17 14:26:29 +0800120 uint8_t min_pkt[ETH_ZLEN];
121 size_t min_pktsz = sizeof(min_pkt);
122
Jason Wangbc38e312021-04-23 11:18:03 +0800123 if (net_peer_needs_padding(&s->nc)) {
Bin Meng969e50b2021-03-17 14:26:29 +0800124 if (eth_pad_short_frame(min_pkt, &min_pktsz, pkt, pkt_len)) {
125 pkt = min_pkt;
126 pkt_len = min_pktsz;
127 }
128 }
Mark McLoughlin68ac40d2009-11-25 18:48:54 +0000129
Marc-André Lureau625a5262019-01-17 15:43:54 +0400130 return qemu_send_packet(&s->nc, pkt, pkt_len);
Mark McLoughlin68ac40d2009-11-25 18:48:54 +0000131}
132
Stefan Hajnoczi4e68f7a2012-07-24 16:35:13 +0100133static ssize_t net_slirp_receive(NetClientState *nc, const uint8_t *buf, size_t size)
Mark McLoughlin68ac40d2009-11-25 18:48:54 +0000134{
Mark McLoughlince20b5b2009-11-25 18:49:06 +0000135 SlirpState *s = DO_UPCAST(SlirpState, nc, nc);
Mark McLoughlin68ac40d2009-11-25 18:48:54 +0000136
137 slirp_input(s->slirp, buf, size);
138
139 return size;
140}
141
Paolo Bonzinif6c2e662016-07-12 09:57:12 +0200142static void slirp_smb_exit(Notifier *n, void *data)
143{
144 SlirpState *s = container_of(n, SlirpState, exit_notifier);
145 slirp_smb_cleanup(s);
146}
147
Marc-André Lureau8d45a3b2019-01-17 15:43:35 +0400148static void slirp_free_fwd(gpointer data)
149{
150 struct GuestFwd *fwd = data;
151
152 qemu_chr_fe_deinit(&fwd->hd, true);
153 g_free(data);
154}
155
Stefan Hajnoczi4e68f7a2012-07-24 16:35:13 +0100156static void net_slirp_cleanup(NetClientState *nc)
Mark McLoughlin68ac40d2009-11-25 18:48:54 +0000157{
Mark McLoughlince20b5b2009-11-25 18:49:06 +0000158 SlirpState *s = DO_UPCAST(SlirpState, nc, nc);
Mark McLoughlin68ac40d2009-11-25 18:48:54 +0000159
Marc-André Lureau8d45a3b2019-01-17 15:43:35 +0400160 g_slist_free_full(s->fwd, slirp_free_fwd);
Marc-André Lureau1ab67b92019-01-17 15:43:55 +0400161 main_loop_poll_remove_notifier(&s->poll_notifier);
Marc-André Lureaud8903442019-02-12 17:25:19 +0100162 unregister_savevm(NULL, "slirp", s->slirp);
Mark McLoughlin68ac40d2009-11-25 18:48:54 +0000163 slirp_cleanup(s->slirp);
Marc-André Lureau67f32802016-08-18 17:44:05 +0400164 if (s->exit_notifier.notify) {
165 qemu_remove_exit_notifier(&s->exit_notifier);
166 }
Mark McLoughlin68ac40d2009-11-25 18:48:54 +0000167 slirp_smb_cleanup(s);
168 QTAILQ_REMOVE(&slirp_stacks, s, entry);
Mark McLoughlin68ac40d2009-11-25 18:48:54 +0000169}
170
Mark McLoughlince20b5b2009-11-25 18:49:06 +0000171static NetClientInfo net_slirp_info = {
Eric Blakef394b2e2016-07-13 21:50:23 -0600172 .type = NET_CLIENT_DRIVER_USER,
Mark McLoughlince20b5b2009-11-25 18:49:06 +0000173 .size = sizeof(SlirpState),
174 .receive = net_slirp_receive,
175 .cleanup = net_slirp_cleanup,
176};
177
Marc-André Lureau3e0fad32019-01-17 15:43:58 +0400178static void net_slirp_guest_error(const char *msg, void *opaque)
Marc-André Lureau2addc8f2018-11-14 16:36:33 +0400179{
180 qemu_log_mask(LOG_GUEST_ERROR, "%s", msg);
181}
182
Marc-André Lureau3e0fad32019-01-17 15:43:58 +0400183static int64_t net_slirp_clock_get_ns(void *opaque)
Marc-André Lureaue6dbff32018-11-22 02:06:28 +0400184{
185 return qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL);
186}
187
Paolo Bonzini6222e552022-04-11 09:39:16 +0200188typedef struct SlirpTimer SlirpTimer;
Paolo Bonziniad2e5b82022-04-11 09:26:06 +0200189struct SlirpTimer {
190 QEMUTimer timer;
Paolo Bonzini6222e552022-04-11 09:39:16 +0200191#if SLIRP_CHECK_VERSION(4,7,0)
192 Slirp *slirp;
193 SlirpTimerId id;
194 void *cb_opaque;
195#endif
196};
197
198#if SLIRP_CHECK_VERSION(4,7,0)
199static void net_slirp_init_completed(Slirp *slirp, void *opaque)
200{
201 SlirpState *s = opaque;
202 s->slirp = slirp;
Paolo Bonziniad2e5b82022-04-11 09:26:06 +0200203}
204
Paolo Bonzini6222e552022-04-11 09:39:16 +0200205static void net_slirp_timer_cb(void *opaque)
206{
207 SlirpTimer *t = opaque;
208 slirp_handle_timer(t->slirp, t->id, t->cb_opaque);
209}
210
211static void *net_slirp_timer_new_opaque(SlirpTimerId id,
212 void *cb_opaque, void *opaque)
213{
214 SlirpState *s = opaque;
215 SlirpTimer *t = g_new(SlirpTimer, 1);
216 t->slirp = s->slirp;
217 t->id = id;
218 t->cb_opaque = cb_opaque;
219 timer_init_full(&t->timer, NULL, QEMU_CLOCK_VIRTUAL,
220 SCALE_MS, QEMU_TIMER_ATTR_EXTERNAL,
221 net_slirp_timer_cb, t);
222 return t;
223}
224#else
Marc-André Lureau3e0fad32019-01-17 15:43:58 +0400225static void *net_slirp_timer_new(SlirpTimerCb cb,
226 void *cb_opaque, void *opaque)
Marc-André Lureau07abf6d2019-01-17 15:43:37 +0400227{
Paolo Bonziniad2e5b82022-04-11 09:26:06 +0200228 SlirpTimer *t = g_new(SlirpTimer, 1);
229 timer_init_full(&t->timer, NULL, QEMU_CLOCK_VIRTUAL,
230 SCALE_MS, QEMU_TIMER_ATTR_EXTERNAL,
231 cb, cb_opaque);
232 return t;
Marc-André Lureau07abf6d2019-01-17 15:43:37 +0400233}
Paolo Bonzini6222e552022-04-11 09:39:16 +0200234#endif
Marc-André Lureau07abf6d2019-01-17 15:43:37 +0400235
Marc-André Lureau3e0fad32019-01-17 15:43:58 +0400236static void net_slirp_timer_free(void *timer, void *opaque)
Marc-André Lureau07abf6d2019-01-17 15:43:37 +0400237{
Paolo Bonziniad2e5b82022-04-11 09:26:06 +0200238 SlirpTimer *t = timer;
239 timer_del(&t->timer);
240 g_free(t);
Marc-André Lureau07abf6d2019-01-17 15:43:37 +0400241}
242
Marc-André Lureau3e0fad32019-01-17 15:43:58 +0400243static void net_slirp_timer_mod(void *timer, int64_t expire_timer,
244 void *opaque)
Marc-André Lureau07abf6d2019-01-17 15:43:37 +0400245{
Paolo Bonziniad2e5b82022-04-11 09:26:06 +0200246 SlirpTimer *t = timer;
247 timer_mod(&t->timer, expire_timer);
Marc-André Lureau07abf6d2019-01-17 15:43:37 +0400248}
249
Marc-André Lureau3e0fad32019-01-17 15:43:58 +0400250static void net_slirp_register_poll_fd(int fd, void *opaque)
Marc-André Lureau848c7092019-01-17 15:43:41 +0400251{
Marc-André Lureaufaa4ec12023-02-21 16:47:56 +0400252#ifdef WIN32
253 AioContext *ctxt = qemu_get_aio_context();
254
Marc-André Lureaufd3c3332023-02-21 16:47:58 +0400255 if (WSAEventSelect(fd, event_notifier_get_handle(&ctxt->notifier),
Marc-André Lureaufaa4ec12023-02-21 16:47:56 +0400256 FD_READ | FD_ACCEPT | FD_CLOSE |
Marc-André Lureaufd3c3332023-02-21 16:47:58 +0400257 FD_CONNECT | FD_WRITE | FD_OOB) != 0) {
258 error_setg_win32(&error_warn, WSAGetLastError(), "failed to WSAEventSelect()");
259 }
Marc-André Lureaufaa4ec12023-02-21 16:47:56 +0400260#endif
Marc-André Lureau848c7092019-01-17 15:43:41 +0400261}
262
Marc-André Lureau3e0fad32019-01-17 15:43:58 +0400263static void net_slirp_unregister_poll_fd(int fd, void *opaque)
Marc-André Lureauf6e5aa32019-01-17 15:43:42 +0400264{
Marc-André Lureau21ac7282023-02-21 16:47:57 +0400265#ifdef WIN32
Marc-André Lureaufd3c3332023-02-21 16:47:58 +0400266 if (WSAEventSelect(fd, NULL, 0) != 0) {
267 error_setg_win32(&error_warn, WSAGetLastError(), "failed to WSAEventSelect()");
268 }
Marc-André Lureau21ac7282023-02-21 16:47:57 +0400269#endif
Marc-André Lureauf6e5aa32019-01-17 15:43:42 +0400270}
271
Marc-André Lureau3e0fad32019-01-17 15:43:58 +0400272static void net_slirp_notify(void *opaque)
273{
274 qemu_notify_event();
275}
276
Marc-André Lureaud846b922018-11-14 16:36:07 +0400277static const SlirpCb slirp_cb = {
Marc-André Lureau625a5262019-01-17 15:43:54 +0400278 .send_packet = net_slirp_send_packet,
Marc-André Lureau2addc8f2018-11-14 16:36:33 +0400279 .guest_error = net_slirp_guest_error,
Marc-André Lureaue6dbff32018-11-22 02:06:28 +0400280 .clock_get_ns = net_slirp_clock_get_ns,
Paolo Bonzini6222e552022-04-11 09:39:16 +0200281#if SLIRP_CHECK_VERSION(4,7,0)
282 .init_completed = net_slirp_init_completed,
283 .timer_new_opaque = net_slirp_timer_new_opaque,
284#else
Marc-André Lureau07abf6d2019-01-17 15:43:37 +0400285 .timer_new = net_slirp_timer_new,
Paolo Bonzini6222e552022-04-11 09:39:16 +0200286#endif
Marc-André Lureau07abf6d2019-01-17 15:43:37 +0400287 .timer_free = net_slirp_timer_free,
288 .timer_mod = net_slirp_timer_mod,
Marc-André Lureau848c7092019-01-17 15:43:41 +0400289 .register_poll_fd = net_slirp_register_poll_fd,
Marc-André Lureauf6e5aa32019-01-17 15:43:42 +0400290 .unregister_poll_fd = net_slirp_unregister_poll_fd,
Marc-André Lureau3e0fad32019-01-17 15:43:58 +0400291 .notify = net_slirp_notify,
Marc-André Lureaud846b922018-11-14 16:36:07 +0400292};
293
Marc-André Lureaudeaeb3f2019-01-17 15:43:57 +0400294static int slirp_poll_to_gio(int events)
295{
296 int ret = 0;
297
298 if (events & SLIRP_POLL_IN) {
299 ret |= G_IO_IN;
300 }
301 if (events & SLIRP_POLL_OUT) {
302 ret |= G_IO_OUT;
303 }
304 if (events & SLIRP_POLL_PRI) {
305 ret |= G_IO_PRI;
306 }
307 if (events & SLIRP_POLL_ERR) {
308 ret |= G_IO_ERR;
309 }
310 if (events & SLIRP_POLL_HUP) {
311 ret |= G_IO_HUP;
312 }
313
314 return ret;
315}
316
317static int net_slirp_add_poll(int fd, int events, void *opaque)
318{
319 GArray *pollfds = opaque;
320 GPollFD pfd = {
321 .fd = fd,
322 .events = slirp_poll_to_gio(events),
323 };
324 int idx = pollfds->len;
325 g_array_append_val(pollfds, pfd);
326 return idx;
327}
328
329static int slirp_gio_to_poll(int events)
330{
331 int ret = 0;
332
333 if (events & G_IO_IN) {
334 ret |= SLIRP_POLL_IN;
335 }
336 if (events & G_IO_OUT) {
337 ret |= SLIRP_POLL_OUT;
338 }
339 if (events & G_IO_PRI) {
340 ret |= SLIRP_POLL_PRI;
341 }
342 if (events & G_IO_ERR) {
343 ret |= SLIRP_POLL_ERR;
344 }
345 if (events & G_IO_HUP) {
346 ret |= SLIRP_POLL_HUP;
347 }
348
349 return ret;
350}
351
352static int net_slirp_get_revents(int idx, void *opaque)
353{
354 GArray *pollfds = opaque;
355
356 return slirp_gio_to_poll(g_array_index(pollfds, GPollFD, idx).revents);
357}
358
Marc-André Lureau1ab67b92019-01-17 15:43:55 +0400359static void net_slirp_poll_notify(Notifier *notifier, void *data)
360{
361 MainLoopPoll *poll = data;
362 SlirpState *s = container_of(notifier, SlirpState, poll_notifier);
363
364 switch (poll->state) {
365 case MAIN_LOOP_POLL_FILL:
Marc-André Lureaudeaeb3f2019-01-17 15:43:57 +0400366 slirp_pollfds_fill(s->slirp, &poll->timeout,
367 net_slirp_add_poll, poll->pollfds);
Marc-André Lureau1ab67b92019-01-17 15:43:55 +0400368 break;
369 case MAIN_LOOP_POLL_OK:
370 case MAIN_LOOP_POLL_ERR:
Marc-André Lureaudeaeb3f2019-01-17 15:43:57 +0400371 slirp_pollfds_poll(s->slirp, poll->state == MAIN_LOOP_POLL_ERR,
372 net_slirp_get_revents, poll->pollfds);
Marc-André Lureau1ab67b92019-01-17 15:43:55 +0400373 break;
374 default:
375 g_assert_not_reached();
376 }
377}
378
Marc-André Lureaud8903442019-02-12 17:25:19 +0100379static ssize_t
380net_slirp_stream_read(void *buf, size_t size, void *opaque)
381{
382 QEMUFile *f = opaque;
383
384 return qemu_get_buffer(f, buf, size);
385}
386
387static ssize_t
388net_slirp_stream_write(const void *buf, size_t size, void *opaque)
389{
390 QEMUFile *f = opaque;
391
392 qemu_put_buffer(f, buf, size);
393 if (qemu_file_get_error(f)) {
394 return -1;
395 }
396
397 return size;
398}
399
400static int net_slirp_state_load(QEMUFile *f, void *opaque, int version_id)
401{
402 Slirp *slirp = opaque;
403
404 return slirp_state_load(slirp, version_id, net_slirp_stream_read, f);
405}
406
407static void net_slirp_state_save(QEMUFile *f, void *opaque)
408{
409 Slirp *slirp = opaque;
410
411 slirp_state_save(slirp, net_slirp_stream_write, f);
412}
413
414static SaveVMHandlers savevm_slirp_state = {
415 .save_state = net_slirp_state_save,
416 .load_state = net_slirp_state_load,
417};
418
Stefan Hajnoczi4e68f7a2012-07-24 16:35:13 +0100419static int net_slirp_init(NetClientState *peer, const char *model,
Mark McLoughlin68ac40d2009-11-25 18:48:54 +0000420 const char *name, int restricted,
Samuel Thibault0b11c032016-03-20 12:29:54 +0100421 bool ipv4, const char *vnetwork, const char *vhost,
422 bool ipv6, const char *vprefix6, int vprefix6_len,
Yann Bordenave7aac5312016-03-15 10:31:22 +0100423 const char *vhost6,
Mark McLoughlin68ac40d2009-11-25 18:48:54 +0000424 const char *vhostname, const char *tftp_export,
425 const char *bootfile, const char *vdhcp_start,
Yann Bordenave7aac5312016-03-15 10:31:22 +0100426 const char *vnameserver, const char *vnameserver6,
427 const char *smb_export, const char *vsmbserver,
Benjamin Drungf18d1372018-02-27 17:06:01 +0100428 const char **dnssearch, const char *vdomainname,
Fam Zheng0fca92b2018-09-14 15:26:16 +0800429 const char *tftp_server_name,
Benjamin Drungf18d1372018-02-27 17:06:01 +0100430 Error **errp)
Mark McLoughlin68ac40d2009-11-25 18:48:54 +0000431{
432 /* default settings according to historic slirp */
433 struct in_addr net = { .s_addr = htonl(0x0a000200) }; /* 10.0.2.0 */
434 struct in_addr mask = { .s_addr = htonl(0xffffff00) }; /* 255.255.255.0 */
435 struct in_addr host = { .s_addr = htonl(0x0a000202) }; /* 10.0.2.2 */
436 struct in_addr dhcp = { .s_addr = htonl(0x0a00020f) }; /* 10.0.2.15 */
437 struct in_addr dns = { .s_addr = htonl(0x0a000203) }; /* 10.0.2.3 */
Yann Bordenave7aac5312016-03-15 10:31:22 +0100438 struct in6_addr ip6_prefix;
439 struct in6_addr ip6_host;
440 struct in6_addr ip6_dns;
Paolo Bonzini35acbb32021-10-13 13:43:36 +0200441#if defined(CONFIG_SMBD_COMMAND)
Mark McLoughlin68ac40d2009-11-25 18:48:54 +0000442 struct in_addr smbsrv = { .s_addr = 0 };
443#endif
Paolo Bonzinibce63de2022-04-11 10:16:36 +0200444 SlirpConfig cfg = { 0 };
Stefan Hajnoczi4e68f7a2012-07-24 16:35:13 +0100445 NetClientState *nc;
Mark McLoughlin68ac40d2009-11-25 18:48:54 +0000446 SlirpState *s;
447 char buf[20];
448 uint32_t addr;
449 int shift;
450 char *end;
451 struct slirp_config_str *config;
452
Samuel Thibault0b11c032016-03-20 12:29:54 +0100453 if (!ipv4 && (vnetwork || vhost || vnameserver)) {
Hervé Poussineau5c843af2017-07-15 18:43:50 +0200454 error_setg(errp, "IPv4 disabled but netmask/host/dns provided");
Samuel Thibault0b11c032016-03-20 12:29:54 +0100455 return -1;
456 }
457
458 if (!ipv6 && (vprefix6 || vhost6 || vnameserver6)) {
Hervé Poussineau5c843af2017-07-15 18:43:50 +0200459 error_setg(errp, "IPv6 disabled but prefix/host6/dns6 provided");
Samuel Thibault0b11c032016-03-20 12:29:54 +0100460 return -1;
461 }
462
463 if (!ipv4 && !ipv6) {
464 /* It doesn't make sense to disable both */
Hervé Poussineau5c843af2017-07-15 18:43:50 +0200465 error_setg(errp, "IPv4 and IPv6 disabled");
Samuel Thibault0b11c032016-03-20 12:29:54 +0100466 return -1;
467 }
468
Mark McLoughlin68ac40d2009-11-25 18:48:54 +0000469 if (vnetwork) {
470 if (get_str_sep(buf, sizeof(buf), &vnetwork, '/') < 0) {
471 if (!inet_aton(vnetwork, &net)) {
Hervé Poussineau5c843af2017-07-15 18:43:50 +0200472 error_setg(errp, "Failed to parse netmask");
Mark McLoughlin68ac40d2009-11-25 18:48:54 +0000473 return -1;
474 }
475 addr = ntohl(net.s_addr);
476 if (!(addr & 0x80000000)) {
477 mask.s_addr = htonl(0xff000000); /* class A */
478 } else if ((addr & 0xfff00000) == 0xac100000) {
479 mask.s_addr = htonl(0xfff00000); /* priv. 172.16.0.0/12 */
480 } else if ((addr & 0xc0000000) == 0x80000000) {
481 mask.s_addr = htonl(0xffff0000); /* class B */
482 } else if ((addr & 0xffff0000) == 0xc0a80000) {
483 mask.s_addr = htonl(0xffff0000); /* priv. 192.168.0.0/16 */
484 } else if ((addr & 0xffff0000) == 0xc6120000) {
485 mask.s_addr = htonl(0xfffe0000); /* tests 198.18.0.0/15 */
486 } else if ((addr & 0xe0000000) == 0xe0000000) {
487 mask.s_addr = htonl(0xffffff00); /* class C */
488 } else {
489 mask.s_addr = htonl(0xfffffff0); /* multicast/reserved */
490 }
491 } else {
492 if (!inet_aton(buf, &net)) {
Hervé Poussineau5c843af2017-07-15 18:43:50 +0200493 error_setg(errp, "Failed to parse netmask");
Mark McLoughlin68ac40d2009-11-25 18:48:54 +0000494 return -1;
495 }
496 shift = strtol(vnetwork, &end, 10);
497 if (*end != '\0') {
498 if (!inet_aton(vnetwork, &mask)) {
Hervé Poussineau5c843af2017-07-15 18:43:50 +0200499 error_setg(errp,
500 "Failed to parse netmask (trailing chars)");
Mark McLoughlin68ac40d2009-11-25 18:48:54 +0000501 return -1;
502 }
503 } else if (shift < 4 || shift > 32) {
Hervé Poussineau5c843af2017-07-15 18:43:50 +0200504 error_setg(errp,
505 "Invalid netmask provided (must be in range 4-32)");
Mark McLoughlin68ac40d2009-11-25 18:48:54 +0000506 return -1;
507 } else {
508 mask.s_addr = htonl(0xffffffff << (32 - shift));
509 }
510 }
511 net.s_addr &= mask.s_addr;
512 host.s_addr = net.s_addr | (htonl(0x0202) & ~mask.s_addr);
513 dhcp.s_addr = net.s_addr | (htonl(0x020f) & ~mask.s_addr);
514 dns.s_addr = net.s_addr | (htonl(0x0203) & ~mask.s_addr);
515 }
516
517 if (vhost && !inet_aton(vhost, &host)) {
Hervé Poussineau5c843af2017-07-15 18:43:50 +0200518 error_setg(errp, "Failed to parse host");
Mark McLoughlin68ac40d2009-11-25 18:48:54 +0000519 return -1;
520 }
521 if ((host.s_addr & mask.s_addr) != net.s_addr) {
Hervé Poussineau5c843af2017-07-15 18:43:50 +0200522 error_setg(errp, "Host doesn't belong to network");
Mark McLoughlin68ac40d2009-11-25 18:48:54 +0000523 return -1;
524 }
525
Mark McLoughlin68ac40d2009-11-25 18:48:54 +0000526 if (vnameserver && !inet_aton(vnameserver, &dns)) {
Hervé Poussineau5c843af2017-07-15 18:43:50 +0200527 error_setg(errp, "Failed to parse DNS");
Mark McLoughlin68ac40d2009-11-25 18:48:54 +0000528 return -1;
529 }
Samuel Thibault120b7212019-09-29 20:08:20 +0200530 if (restricted && (dns.s_addr & mask.s_addr) != net.s_addr) {
Hervé Poussineau5c843af2017-07-15 18:43:50 +0200531 error_setg(errp, "DNS doesn't belong to network");
532 return -1;
533 }
534 if (dns.s_addr == host.s_addr) {
535 error_setg(errp, "DNS must be different from host");
Mark McLoughlin68ac40d2009-11-25 18:48:54 +0000536 return -1;
537 }
538
Bas van Sisseren68756ba2013-06-03 15:11:49 +0200539 if (vdhcp_start && !inet_aton(vdhcp_start, &dhcp)) {
Hervé Poussineau5c843af2017-07-15 18:43:50 +0200540 error_setg(errp, "Failed to parse DHCP start address");
Bas van Sisseren68756ba2013-06-03 15:11:49 +0200541 return -1;
542 }
Hervé Poussineau5c843af2017-07-15 18:43:50 +0200543 if ((dhcp.s_addr & mask.s_addr) != net.s_addr) {
544 error_setg(errp, "DHCP doesn't belong to network");
545 return -1;
546 }
547 if (dhcp.s_addr == host.s_addr || dhcp.s_addr == dns.s_addr) {
Doug Evans0c373c02021-01-21 16:42:51 -0800548 error_setg(errp, "DHCP must be different from host and DNS");
Bas van Sisseren68756ba2013-06-03 15:11:49 +0200549 return -1;
550 }
551
Paolo Bonzini35acbb32021-10-13 13:43:36 +0200552#if defined(CONFIG_SMBD_COMMAND)
Mark McLoughlin68ac40d2009-11-25 18:48:54 +0000553 if (vsmbserver && !inet_aton(vsmbserver, &smbsrv)) {
Hervé Poussineau5c843af2017-07-15 18:43:50 +0200554 error_setg(errp, "Failed to parse SMB address");
Mark McLoughlin68ac40d2009-11-25 18:48:54 +0000555 return -1;
556 }
557#endif
558
Yann Bordenave7aac5312016-03-15 10:31:22 +0100559 if (!vprefix6) {
560 vprefix6 = "fec0::";
561 }
562 if (!inet_pton(AF_INET6, vprefix6, &ip6_prefix)) {
Hervé Poussineau5c843af2017-07-15 18:43:50 +0200563 error_setg(errp, "Failed to parse IPv6 prefix");
Yann Bordenave7aac5312016-03-15 10:31:22 +0100564 return -1;
565 }
Yann Bordenave7aac5312016-03-15 10:31:22 +0100566
567 if (!vprefix6_len) {
568 vprefix6_len = 64;
569 }
570 if (vprefix6_len < 0 || vprefix6_len > 126) {
Hervé Poussineau5c843af2017-07-15 18:43:50 +0200571 error_setg(errp,
Stefano Garzarella178a0a52019-05-15 11:08:05 +0200572 "Invalid IPv6 prefix provided "
573 "(IPv6 prefix length must be between 0 and 126)");
Yann Bordenave7aac5312016-03-15 10:31:22 +0100574 return -1;
575 }
576
577 if (vhost6) {
Yann Bordenave7aac5312016-03-15 10:31:22 +0100578 if (!inet_pton(AF_INET6, vhost6, &ip6_host)) {
Hervé Poussineau5c843af2017-07-15 18:43:50 +0200579 error_setg(errp, "Failed to parse IPv6 host");
Yann Bordenave7aac5312016-03-15 10:31:22 +0100580 return -1;
581 }
582 if (!in6_equal_net(&ip6_prefix, &ip6_host, vprefix6_len)) {
Hervé Poussineau5c843af2017-07-15 18:43:50 +0200583 error_setg(errp, "IPv6 Host doesn't belong to network");
Yann Bordenave7aac5312016-03-15 10:31:22 +0100584 return -1;
585 }
Yann Bordenave7aac5312016-03-15 10:31:22 +0100586 } else {
587 ip6_host = ip6_prefix;
588 ip6_host.s6_addr[15] |= 2;
589 }
590
591 if (vnameserver6) {
Yann Bordenave7aac5312016-03-15 10:31:22 +0100592 if (!inet_pton(AF_INET6, vnameserver6, &ip6_dns)) {
Hervé Poussineau5c843af2017-07-15 18:43:50 +0200593 error_setg(errp, "Failed to parse IPv6 DNS");
Yann Bordenave7aac5312016-03-15 10:31:22 +0100594 return -1;
595 }
Samuel Thibault120b7212019-09-29 20:08:20 +0200596 if (restricted && !in6_equal_net(&ip6_prefix, &ip6_dns, vprefix6_len)) {
Hervé Poussineau5c843af2017-07-15 18:43:50 +0200597 error_setg(errp, "IPv6 DNS doesn't belong to network");
Yann Bordenave7aac5312016-03-15 10:31:22 +0100598 return -1;
599 }
Yann Bordenave7aac5312016-03-15 10:31:22 +0100600 } else {
601 ip6_dns = ip6_prefix;
602 ip6_dns.s6_addr[15] |= 3;
603 }
604
Benjamin Drungf18d1372018-02-27 17:06:01 +0100605 if (vdomainname && !*vdomainname) {
606 error_setg(errp, "'domainname' parameter cannot be empty");
607 return -1;
608 }
609
Fam Zheng6e157a02018-09-14 15:26:15 +0800610 if (vdomainname && strlen(vdomainname) > 255) {
611 error_setg(errp, "'domainname' parameter cannot exceed 255 bytes");
612 return -1;
613 }
614
615 if (vhostname && strlen(vhostname) > 255) {
616 error_setg(errp, "'vhostname' parameter cannot exceed 255 bytes");
617 return -1;
618 }
Yann Bordenave7aac5312016-03-15 10:31:22 +0100619
Fam Zheng0fca92b2018-09-14 15:26:16 +0800620 if (tftp_server_name && strlen(tftp_server_name) > 255) {
621 error_setg(errp, "'tftp-server-name' parameter cannot exceed 255 bytes");
622 return -1;
623 }
624
Stefan Hajnocziab5f3f82012-07-24 16:35:08 +0100625 nc = qemu_new_net_client(&net_slirp_info, peer, model, name);
Mark McLoughlince20b5b2009-11-25 18:49:06 +0000626
Laurent Vivier53b85d92022-10-21 11:09:10 +0200627 qemu_set_info_str(nc, "net=%s,restrict=%s", inet_ntoa(net),
628 restricted ? "on" : "off");
Jason Wangd89b4f82021-04-02 11:03:12 +0800629
Mark McLoughlince20b5b2009-11-25 18:49:06 +0000630 s = DO_UPCAST(SlirpState, nc, nc);
631
Paolo Bonzini6222e552022-04-11 09:39:16 +0200632 cfg.version = SLIRP_CHECK_VERSION(4,7,0) ? 4 : 1;
Paolo Bonzinibce63de2022-04-11 10:16:36 +0200633 cfg.restricted = restricted;
634 cfg.in_enabled = ipv4;
635 cfg.vnetwork = net;
636 cfg.vnetmask = mask;
637 cfg.vhost = host;
638 cfg.in6_enabled = ipv6;
639 cfg.vprefix_addr6 = ip6_prefix;
640 cfg.vprefix_len = vprefix6_len;
641 cfg.vhost6 = ip6_host;
642 cfg.vhostname = vhostname;
643 cfg.tftp_server_name = tftp_server_name;
644 cfg.tftp_path = tftp_export;
645 cfg.bootfile = bootfile;
646 cfg.vdhcp_start = dhcp;
647 cfg.vnameserver = dns;
648 cfg.vnameserver6 = ip6_dns;
649 cfg.vdnssearch = dnssearch;
650 cfg.vdomainname = vdomainname;
651 s->slirp = slirp_new(&cfg, &slirp_cb, s);
Mark McLoughlin68ac40d2009-11-25 18:48:54 +0000652 QTAILQ_INSERT_TAIL(&slirp_stacks, s, entry);
653
Marc-André Lureaud8903442019-02-12 17:25:19 +0100654 /*
655 * Make sure the current bitstream version of slirp is 4, to avoid
656 * QEMU migration incompatibilities, if upstream slirp bumped the
657 * version.
658 *
659 * FIXME: use bitfields of features? teach libslirp to save with
660 * specific version?
661 */
662 g_assert(slirp_state_version() == 4);
Juan Quintelab23db4c2023-10-20 11:07:23 +0200663 register_savevm_live("slirp", VMSTATE_INSTANCE_ID_ANY,
664 slirp_state_version(), &savevm_slirp_state, s->slirp);
Marc-André Lureaud8903442019-02-12 17:25:19 +0100665
Marc-André Lureau1ab67b92019-01-17 15:43:55 +0400666 s->poll_notifier.notify = net_slirp_poll_notify;
667 main_loop_poll_add_notifier(&s->poll_notifier);
668
Mark McLoughlin68ac40d2009-11-25 18:48:54 +0000669 for (config = slirp_configs; config; config = config->next) {
670 if (config->flags & SLIRP_CFG_HOSTFWD) {
Thomas Huthd18572d2018-08-22 15:43:30 +0200671 if (slirp_hostfwd(s, config->str, errp) < 0) {
Mark McLoughlince20b5b2009-11-25 18:49:06 +0000672 goto error;
Hervé Poussineau5c843af2017-07-15 18:43:50 +0200673 }
Mark McLoughlin68ac40d2009-11-25 18:48:54 +0000674 } else {
Thomas Huthd18572d2018-08-22 15:43:30 +0200675 if (slirp_guestfwd(s, config->str, errp) < 0) {
Mark McLoughlince20b5b2009-11-25 18:49:06 +0000676 goto error;
Hervé Poussineau5c843af2017-07-15 18:43:50 +0200677 }
Mark McLoughlin68ac40d2009-11-25 18:48:54 +0000678 }
679 }
Paolo Bonzini35acbb32021-10-13 13:43:36 +0200680#if defined(CONFIG_SMBD_COMMAND)
Mark McLoughlin68ac40d2009-11-25 18:48:54 +0000681 if (smb_export) {
Hervé Poussineau5c843af2017-07-15 18:43:50 +0200682 if (slirp_smb(s, smb_export, smbsrv, errp) < 0) {
Mark McLoughlince20b5b2009-11-25 18:49:06 +0000683 goto error;
Hervé Poussineau5c843af2017-07-15 18:43:50 +0200684 }
Mark McLoughlin68ac40d2009-11-25 18:48:54 +0000685 }
686#endif
687
Paolo Bonzinif6c2e662016-07-12 09:57:12 +0200688 s->exit_notifier.notify = slirp_smb_exit;
689 qemu_add_exit_notifier(&s->exit_notifier);
Mark McLoughlin68ac40d2009-11-25 18:48:54 +0000690 return 0;
Mark McLoughlince20b5b2009-11-25 18:49:06 +0000691
692error:
Stefan Hajnoczib20c6b92012-07-24 16:35:15 +0100693 qemu_del_net_client(nc);
Mark McLoughlince20b5b2009-11-25 18:49:06 +0000694 return -1;
Mark McLoughlin68ac40d2009-11-25 18:48:54 +0000695}
696
Thomas Huthb4983c52019-12-05 11:41:09 +0100697static SlirpState *slirp_lookup(Monitor *mon, const char *id)
Mark McLoughlin68ac40d2009-11-25 18:48:54 +0000698{
Thomas Huthb4983c52019-12-05 11:41:09 +0100699 if (id) {
700 NetClientState *nc = qemu_find_netdev(id);
701 if (!nc) {
702 monitor_printf(mon, "unrecognized netdev id '%s'\n", id);
703 return NULL;
Mark McLoughlin68ac40d2009-11-25 18:48:54 +0000704 }
Mark McLoughlince20b5b2009-11-25 18:49:06 +0000705 if (strcmp(nc->model, "user")) {
Mark McLoughlin68ac40d2009-11-25 18:48:54 +0000706 monitor_printf(mon, "invalid device specified\n");
707 return NULL;
708 }
Mark McLoughlince20b5b2009-11-25 18:49:06 +0000709 return DO_UPCAST(SlirpState, nc, nc);
Mark McLoughlin68ac40d2009-11-25 18:48:54 +0000710 } else {
711 if (QTAILQ_EMPTY(&slirp_stacks)) {
712 monitor_printf(mon, "user mode network stack not in use\n");
713 return NULL;
714 }
715 return QTAILQ_FIRST(&slirp_stacks);
716 }
717}
718
Markus Armbruster3e5a50d2015-02-06 13:55:43 +0100719void hmp_hostfwd_remove(Monitor *mon, const QDict *qdict)
Mark McLoughlin68ac40d2009-11-25 18:48:54 +0000720{
Nicholas Ngai03555192021-09-25 14:48:20 -0700721 struct sockaddr_in host_addr = {
722 .sin_family = AF_INET,
723 .sin_addr = {
724 .s_addr = INADDR_ANY,
725 },
726 };
Mark McLoughlin68ac40d2009-11-25 18:48:54 +0000727 int host_port;
Markus Armbrustere30e5eb2011-11-16 15:45:59 +0100728 char buf[256];
Mark McLoughlin68ac40d2009-11-25 18:48:54 +0000729 const char *src_str, *p;
730 SlirpState *s;
731 int is_udp = 0;
732 int err;
733 const char *arg1 = qdict_get_str(qdict, "arg1");
734 const char *arg2 = qdict_get_try_str(qdict, "arg2");
Mark McLoughlin68ac40d2009-11-25 18:48:54 +0000735
Thomas Huthb4983c52019-12-05 11:41:09 +0100736 if (arg2) {
737 s = slirp_lookup(mon, arg1);
Thomas Huth93653062018-01-11 21:02:40 +0100738 src_str = arg2;
Mark McLoughlin68ac40d2009-11-25 18:48:54 +0000739 } else {
Thomas Huthb4983c52019-12-05 11:41:09 +0100740 s = slirp_lookup(mon, NULL);
Mark McLoughlin68ac40d2009-11-25 18:48:54 +0000741 src_str = arg1;
742 }
743 if (!s) {
744 return;
745 }
746
Mark McLoughlin68ac40d2009-11-25 18:48:54 +0000747 p = src_str;
Markus Armbrustere30e5eb2011-11-16 15:45:59 +0100748 if (!p || get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
749 goto fail_syntax;
750 }
Mark McLoughlin68ac40d2009-11-25 18:48:54 +0000751
752 if (!strcmp(buf, "tcp") || buf[0] == '\0') {
753 is_udp = 0;
754 } else if (!strcmp(buf, "udp")) {
755 is_udp = 1;
756 } else {
757 goto fail_syntax;
758 }
759
760 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
761 goto fail_syntax;
762 }
Nicholas Ngai03555192021-09-25 14:48:20 -0700763 if (buf[0] != '\0' && !inet_aton(buf, &host_addr.sin_addr)) {
Mark McLoughlin68ac40d2009-11-25 18:48:54 +0000764 goto fail_syntax;
765 }
766
Nia Alarie1fb3f7f2018-03-16 14:39:21 +0000767 if (qemu_strtoi(p, NULL, 10, &host_port)) {
768 goto fail_syntax;
769 }
Nicholas Ngai03555192021-09-25 14:48:20 -0700770 host_addr.sin_port = htons(host_port);
Mark McLoughlin68ac40d2009-11-25 18:48:54 +0000771
Nicholas Ngai03555192021-09-25 14:48:20 -0700772#if SLIRP_CHECK_VERSION(4, 5, 0)
773 err = slirp_remove_hostxfwd(s->slirp, (struct sockaddr *) &host_addr,
774 sizeof(host_addr), is_udp ? SLIRP_HOSTFWD_UDP : 0);
775#else
776 err = slirp_remove_hostfwd(s->slirp, is_udp, host_addr.sin_addr, host_port);
777#endif
Mark McLoughlin68ac40d2009-11-25 18:48:54 +0000778
779 monitor_printf(mon, "host forwarding rule for %s %s\n", src_str,
Geoffrey Thomasb15ba6c2011-12-17 04:23:59 -0500780 err ? "not found" : "removed");
Mark McLoughlin68ac40d2009-11-25 18:48:54 +0000781 return;
782
783 fail_syntax:
784 monitor_printf(mon, "invalid format\n");
785}
786
Thomas Huthd18572d2018-08-22 15:43:30 +0200787static int slirp_hostfwd(SlirpState *s, const char *redir_str, Error **errp)
Mark McLoughlin68ac40d2009-11-25 18:48:54 +0000788{
Nicholas Ngai03555192021-09-25 14:48:20 -0700789 struct sockaddr_in host_addr = {
790 .sin_family = AF_INET,
791 .sin_addr = {
792 .s_addr = INADDR_ANY,
793 },
794 };
795 struct sockaddr_in guest_addr = {
796 .sin_family = AF_INET,
797 .sin_addr = {
798 .s_addr = 0,
799 },
800 };
801 int err;
Mark McLoughlin68ac40d2009-11-25 18:48:54 +0000802 int host_port, guest_port;
803 const char *p;
804 char buf[256];
805 int is_udp;
Nicholas Ngai03555192021-09-25 14:48:20 -0700806 const char *end;
Dr. David Alan Gilbert0e7e4fb2017-09-08 16:53:59 +0100807 const char *fail_reason = "Unknown reason";
Mark McLoughlin68ac40d2009-11-25 18:48:54 +0000808
809 p = redir_str;
810 if (!p || get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
Dr. David Alan Gilbert0e7e4fb2017-09-08 16:53:59 +0100811 fail_reason = "No : separators";
Mark McLoughlin68ac40d2009-11-25 18:48:54 +0000812 goto fail_syntax;
813 }
814 if (!strcmp(buf, "tcp") || buf[0] == '\0') {
815 is_udp = 0;
816 } else if (!strcmp(buf, "udp")) {
817 is_udp = 1;
818 } else {
Dr. David Alan Gilbert0e7e4fb2017-09-08 16:53:59 +0100819 fail_reason = "Bad protocol name";
Mark McLoughlin68ac40d2009-11-25 18:48:54 +0000820 goto fail_syntax;
821 }
822
Thomas Huthd18572d2018-08-22 15:43:30 +0200823 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
824 fail_reason = "Missing : separator";
825 goto fail_syntax;
826 }
Nicholas Ngai03555192021-09-25 14:48:20 -0700827 if (buf[0] != '\0' && !inet_aton(buf, &host_addr.sin_addr)) {
Thomas Huthd18572d2018-08-22 15:43:30 +0200828 fail_reason = "Bad host address";
829 goto fail_syntax;
Mark McLoughlin68ac40d2009-11-25 18:48:54 +0000830 }
831
Thomas Huthd18572d2018-08-22 15:43:30 +0200832 if (get_str_sep(buf, sizeof(buf), &p, '-') < 0) {
Dr. David Alan Gilbert0e7e4fb2017-09-08 16:53:59 +0100833 fail_reason = "Bad host port separator";
Mark McLoughlin68ac40d2009-11-25 18:48:54 +0000834 goto fail_syntax;
835 }
Nicholas Ngai03555192021-09-25 14:48:20 -0700836 err = qemu_strtoi(buf, &end, 0, &host_port);
837 if (err || host_port < 0 || host_port > 65535) {
Dr. David Alan Gilbert0e7e4fb2017-09-08 16:53:59 +0100838 fail_reason = "Bad host port";
Mark McLoughlin68ac40d2009-11-25 18:48:54 +0000839 goto fail_syntax;
840 }
Nicholas Ngai03555192021-09-25 14:48:20 -0700841 host_addr.sin_port = htons(host_port);
Mark McLoughlin68ac40d2009-11-25 18:48:54 +0000842
843 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
Dr. David Alan Gilbert0e7e4fb2017-09-08 16:53:59 +0100844 fail_reason = "Missing guest address";
Mark McLoughlin68ac40d2009-11-25 18:48:54 +0000845 goto fail_syntax;
846 }
Nicholas Ngai03555192021-09-25 14:48:20 -0700847 if (buf[0] != '\0' && !inet_aton(buf, &guest_addr.sin_addr)) {
Dr. David Alan Gilbert0e7e4fb2017-09-08 16:53:59 +0100848 fail_reason = "Bad guest address";
Mark McLoughlin68ac40d2009-11-25 18:48:54 +0000849 goto fail_syntax;
850 }
851
Nicholas Ngai03555192021-09-25 14:48:20 -0700852 err = qemu_strtoi(p, &end, 0, &guest_port);
853 if (err || guest_port < 1 || guest_port > 65535) {
Dr. David Alan Gilbert0e7e4fb2017-09-08 16:53:59 +0100854 fail_reason = "Bad guest port";
Mark McLoughlin68ac40d2009-11-25 18:48:54 +0000855 goto fail_syntax;
856 }
Nicholas Ngai03555192021-09-25 14:48:20 -0700857 guest_addr.sin_port = htons(guest_port);
Mark McLoughlin68ac40d2009-11-25 18:48:54 +0000858
Nicholas Ngai03555192021-09-25 14:48:20 -0700859#if SLIRP_CHECK_VERSION(4, 5, 0)
860 err = slirp_add_hostxfwd(s->slirp,
861 (struct sockaddr *) &host_addr, sizeof(host_addr),
862 (struct sockaddr *) &guest_addr, sizeof(guest_addr),
863 is_udp ? SLIRP_HOSTFWD_UDP : 0);
864#else
865 err = slirp_add_hostfwd(s->slirp, is_udp,
866 host_addr.sin_addr, host_port,
867 guest_addr.sin_addr, guest_port);
868#endif
869
870 if (err < 0) {
Hervé Poussineau5c843af2017-07-15 18:43:50 +0200871 error_setg(errp, "Could not set up host forwarding rule '%s'",
872 redir_str);
Mark McLoughlin68ac40d2009-11-25 18:48:54 +0000873 return -1;
874 }
875 return 0;
876
877 fail_syntax:
Dr. David Alan Gilbert0e7e4fb2017-09-08 16:53:59 +0100878 error_setg(errp, "Invalid host forwarding rule '%s' (%s)", redir_str,
879 fail_reason);
Mark McLoughlin68ac40d2009-11-25 18:48:54 +0000880 return -1;
881}
882
Markus Armbruster3e5a50d2015-02-06 13:55:43 +0100883void hmp_hostfwd_add(Monitor *mon, const QDict *qdict)
Mark McLoughlin68ac40d2009-11-25 18:48:54 +0000884{
885 const char *redir_str;
886 SlirpState *s;
887 const char *arg1 = qdict_get_str(qdict, "arg1");
888 const char *arg2 = qdict_get_try_str(qdict, "arg2");
Mark McLoughlin68ac40d2009-11-25 18:48:54 +0000889
Thomas Huthb4983c52019-12-05 11:41:09 +0100890 if (arg2) {
891 s = slirp_lookup(mon, arg1);
Thomas Huth93653062018-01-11 21:02:40 +0100892 redir_str = arg2;
Mark McLoughlin68ac40d2009-11-25 18:48:54 +0000893 } else {
Thomas Huthb4983c52019-12-05 11:41:09 +0100894 s = slirp_lookup(mon, NULL);
Mark McLoughlin68ac40d2009-11-25 18:48:54 +0000895 redir_str = arg1;
896 }
897 if (s) {
Hervé Poussineau5c843af2017-07-15 18:43:50 +0200898 Error *err = NULL;
Thomas Huthd18572d2018-08-22 15:43:30 +0200899 if (slirp_hostfwd(s, redir_str, &err) < 0) {
Hervé Poussineau5c843af2017-07-15 18:43:50 +0200900 error_report_err(err);
901 }
Mark McLoughlin68ac40d2009-11-25 18:48:54 +0000902 }
903
904}
905
Paolo Bonzini35acbb32021-10-13 13:43:36 +0200906#if defined(CONFIG_SMBD_COMMAND)
Mark McLoughlin68ac40d2009-11-25 18:48:54 +0000907
908/* automatic user mode samba server configuration */
909static void slirp_smb_cleanup(SlirpState *s)
910{
Kirill A. Shutemov5a01e992010-01-20 00:56:16 +0100911 int ret;
Mark McLoughlin68ac40d2009-11-25 18:48:54 +0000912
Dr. David Alan Gilbertf95cc8b2017-04-07 15:32:54 +0100913 if (s->smb_dir) {
914 gchar *cmd = g_strdup_printf("rm -rf %s", s->smb_dir);
Kirill A. Shutemov5a01e992010-01-20 00:56:16 +0100915 ret = system(cmd);
Juan Quintela24ac07d2010-03-04 10:00:31 +0100916 if (ret == -1 || !WIFEXITED(ret)) {
Markus Armbruster1ecda022010-02-18 17:25:24 +0100917 error_report("'%s' failed.", cmd);
Kirill A. Shutemov5a01e992010-01-20 00:56:16 +0100918 } else if (WEXITSTATUS(ret)) {
Markus Armbruster1ecda022010-02-18 17:25:24 +0100919 error_report("'%s' failed. Error code: %d",
920 cmd, WEXITSTATUS(ret));
Kirill A. Shutemov5a01e992010-01-20 00:56:16 +0100921 }
Dr. David Alan Gilbertf95cc8b2017-04-07 15:32:54 +0100922 g_free(cmd);
923 g_free(s->smb_dir);
924 s->smb_dir = NULL;
Mark McLoughlin68ac40d2009-11-25 18:48:54 +0000925 }
926}
927
928static int slirp_smb(SlirpState* s, const char *exported_dir,
Hervé Poussineau5c843af2017-07-15 18:43:50 +0200929 struct in_addr vserver_addr, Error **errp)
Mark McLoughlin68ac40d2009-11-25 18:48:54 +0000930{
Dr. David Alan Gilbertf95cc8b2017-04-07 15:32:54 +0100931 char *smb_conf;
932 char *smb_cmdline;
Jan Kiszka1cb1c5d2012-07-05 19:35:57 +0200933 struct passwd *passwd;
Mark McLoughlin68ac40d2009-11-25 18:48:54 +0000934 FILE *f;
935
Jan Kiszka1cb1c5d2012-07-05 19:35:57 +0200936 passwd = getpwuid(geteuid());
937 if (!passwd) {
Hervé Poussineau5c843af2017-07-15 18:43:50 +0200938 error_setg(errp, "Failed to retrieve user name");
Jan Kiszka1cb1c5d2012-07-05 19:35:57 +0200939 return -1;
940 }
941
Dunrong Huang927d8112012-07-06 14:04:43 +0800942 if (access(CONFIG_SMBD_COMMAND, F_OK)) {
Hervé Poussineau5c843af2017-07-15 18:43:50 +0200943 error_setg(errp, "Could not find '%s', please install it",
944 CONFIG_SMBD_COMMAND);
Dunrong Huang927d8112012-07-06 14:04:43 +0800945 return -1;
946 }
947
948 if (access(exported_dir, R_OK | X_OK)) {
Hervé Poussineau5c843af2017-07-15 18:43:50 +0200949 error_setg(errp, "Error accessing shared directory '%s': %s",
950 exported_dir, strerror(errno));
Dunrong Huang927d8112012-07-06 14:04:43 +0800951 return -1;
952 }
953
Dr. David Alan Gilbertf95cc8b2017-04-07 15:32:54 +0100954 s->smb_dir = g_dir_make_tmp("qemu-smb.XXXXXX", NULL);
955 if (!s->smb_dir) {
Hervé Poussineau5c843af2017-07-15 18:43:50 +0200956 error_setg(errp, "Could not create samba server dir");
Mark McLoughlin68ac40d2009-11-25 18:48:54 +0000957 return -1;
958 }
Dr. David Alan Gilbertf95cc8b2017-04-07 15:32:54 +0100959 smb_conf = g_strdup_printf("%s/%s", s->smb_dir, "smb.conf");
Mark McLoughlin68ac40d2009-11-25 18:48:54 +0000960
961 f = fopen(smb_conf, "w");
962 if (!f) {
963 slirp_smb_cleanup(s);
Hervé Poussineau5c843af2017-07-15 18:43:50 +0200964 error_setg(errp,
965 "Could not create samba server configuration file '%s'",
966 smb_conf);
Dr. David Alan Gilbertf95cc8b2017-04-07 15:32:54 +0100967 g_free(smb_conf);
Mark McLoughlin68ac40d2009-11-25 18:48:54 +0000968 return -1;
969 }
970 fprintf(f,
971 "[global]\n"
972 "private dir=%s\n"
Peter Wu7912d042014-11-03 11:52:10 +0100973 "interfaces=127.0.0.1\n"
974 "bind interfaces only=yes\n"
Mark McLoughlin68ac40d2009-11-25 18:48:54 +0000975 "pid directory=%s\n"
976 "lock directory=%s\n"
Nikolaus Rath276eda52012-04-25 09:57:19 -0400977 "state directory=%s\n"
Peter Wu7912d042014-11-03 11:52:10 +0100978 "cache directory=%s\n"
Michael Bueschb87b8a82014-04-27 14:54:12 +0400979 "ncalrpc dir=%s/ncalrpc\n"
Mark McLoughlin68ac40d2009-11-25 18:48:54 +0000980 "log file=%s/log.smbd\n"
981 "smb passwd file=%s/smbpasswd\n"
Michael Bueschc2804ee2013-11-01 12:23:49 +0100982 "security = user\n"
983 "map to guest = Bad User\n"
Peter Wu7912d042014-11-03 11:52:10 +0100984 "load printers = no\n"
985 "printing = bsd\n"
986 "disable spoolss = yes\n"
987 "usershare max shares = 0\n"
Mark McLoughlin68ac40d2009-11-25 18:48:54 +0000988 "[qemu]\n"
989 "path=%s\n"
990 "read only=no\n"
Jan Kiszka1cb1c5d2012-07-05 19:35:57 +0200991 "guest ok=yes\n"
992 "force user=%s\n",
Mark McLoughlin68ac40d2009-11-25 18:48:54 +0000993 s->smb_dir,
994 s->smb_dir,
995 s->smb_dir,
996 s->smb_dir,
997 s->smb_dir,
Nikolaus Rath276eda52012-04-25 09:57:19 -0400998 s->smb_dir,
Michael Bueschb87b8a82014-04-27 14:54:12 +0400999 s->smb_dir,
Peter Wu7912d042014-11-03 11:52:10 +01001000 s->smb_dir,
Jan Kiszka1cb1c5d2012-07-05 19:35:57 +02001001 exported_dir,
1002 passwd->pw_name
Mark McLoughlin68ac40d2009-11-25 18:48:54 +00001003 );
1004 fclose(f);
1005
Dr. David Alan Gilbertf95cc8b2017-04-07 15:32:54 +01001006 smb_cmdline = g_strdup_printf("%s -l %s -s %s",
Michael Tokarev44d8d2b2014-10-25 00:29:50 +04001007 CONFIG_SMBD_COMMAND, s->smb_dir, smb_conf);
Dr. David Alan Gilbertf95cc8b2017-04-07 15:32:54 +01001008 g_free(smb_conf);
Mark McLoughlin68ac40d2009-11-25 18:48:54 +00001009
Marc-André Lureau44b4ff22019-01-17 15:43:33 +04001010 if (slirp_add_exec(s->slirp, smb_cmdline, &vserver_addr, 139) < 0 ||
1011 slirp_add_exec(s->slirp, smb_cmdline, &vserver_addr, 445) < 0) {
Mark McLoughlin68ac40d2009-11-25 18:48:54 +00001012 slirp_smb_cleanup(s);
Dr. David Alan Gilbertf95cc8b2017-04-07 15:32:54 +01001013 g_free(smb_cmdline);
Hervé Poussineau5c843af2017-07-15 18:43:50 +02001014 error_setg(errp, "Conflicting/invalid smbserver address");
Mark McLoughlin68ac40d2009-11-25 18:48:54 +00001015 return -1;
1016 }
Dr. David Alan Gilbertf95cc8b2017-04-07 15:32:54 +01001017 g_free(smb_cmdline);
Mark McLoughlin68ac40d2009-11-25 18:48:54 +00001018 return 0;
1019}
1020
Paolo Bonzini35acbb32021-10-13 13:43:36 +02001021#endif /* defined(CONFIG_SMBD_COMMAND) */
Mark McLoughlin68ac40d2009-11-25 18:48:54 +00001022
Mark McLoughlin68ac40d2009-11-25 18:48:54 +00001023static int guestfwd_can_read(void *opaque)
1024{
1025 struct GuestFwd *fwd = opaque;
1026 return slirp_socket_can_recv(fwd->slirp, fwd->server, fwd->port);
1027}
1028
1029static void guestfwd_read(void *opaque, const uint8_t *buf, int size)
1030{
1031 struct GuestFwd *fwd = opaque;
1032 slirp_socket_recv(fwd->slirp, fwd->server, fwd->port, buf, size);
1033}
1034
Marc-André Lureau625a5262019-01-17 15:43:54 +04001035static ssize_t guestfwd_write(const void *buf, size_t len, void *chr)
Marc-André Lureau44b4ff22019-01-17 15:43:33 +04001036{
1037 return qemu_chr_fe_write_all(chr, buf, len);
1038}
1039
Thomas Huthd18572d2018-08-22 15:43:30 +02001040static int slirp_guestfwd(SlirpState *s, const char *config_str, Error **errp)
Mark McLoughlin68ac40d2009-11-25 18:48:54 +00001041{
Samuel Thibaultffe02f52016-04-01 00:46:35 +02001042 /* TODO: IPv6 */
Mark McLoughlin68ac40d2009-11-25 18:48:54 +00001043 struct in_addr server = { .s_addr = 0 };
1044 struct GuestFwd *fwd;
1045 const char *p;
1046 char buf[128];
1047 char *end;
1048 int port;
1049
1050 p = config_str;
Thomas Huthd18572d2018-08-22 15:43:30 +02001051 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
1052 goto fail_syntax;
1053 }
1054 if (strcmp(buf, "tcp") && buf[0] != '\0') {
1055 goto fail_syntax;
1056 }
1057 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
1058 goto fail_syntax;
1059 }
1060 if (buf[0] != '\0' && !inet_aton(buf, &server)) {
1061 goto fail_syntax;
1062 }
1063 if (get_str_sep(buf, sizeof(buf), &p, '-') < 0) {
1064 goto fail_syntax;
Mark McLoughlin68ac40d2009-11-25 18:48:54 +00001065 }
1066 port = strtol(buf, &end, 10);
1067 if (*end != '\0' || port < 1 || port > 65535) {
1068 goto fail_syntax;
1069 }
1070
Alexander Grafa9899992011-06-04 07:25:59 +02001071 snprintf(buf, sizeof(buf), "guestfwd.tcp.%d", port);
Mark McLoughlin68ac40d2009-11-25 18:48:54 +00001072
Marc-André Lureau36247302019-01-17 15:43:34 +04001073 if (g_str_has_prefix(p, "cmd:")) {
Marc-André Lureau44b4ff22019-01-17 15:43:33 +04001074 if (slirp_add_exec(s->slirp, &p[4], &server, port) < 0) {
Hervé Poussineau5c843af2017-07-15 18:43:50 +02001075 error_setg(errp, "Conflicting/invalid host:port in guest "
1076 "forwarding rule '%s'", config_str);
Alexander Grafb412eb62012-06-03 09:45:01 +02001077 return -1;
1078 }
1079 } else {
Marc-André Lureau32a6ebe2016-10-22 12:52:52 +03001080 Error *err = NULL;
Marc-André Lureau95e30b22018-08-22 19:19:42 +02001081 /*
1082 * FIXME: sure we want to support implicit
1083 * muxed monitors here?
1084 */
Paolo Bonzini4ad6f6c2019-02-13 14:18:13 +01001085 Chardev *chr = qemu_chr_new_mux_mon(buf, p, NULL);
Marc-André Lureau32a6ebe2016-10-22 12:52:52 +03001086
1087 if (!chr) {
Hervé Poussineau5c843af2017-07-15 18:43:50 +02001088 error_setg(errp, "Could not open guest forwarding device '%s'",
1089 buf);
Marc-André Lureau32a6ebe2016-10-22 12:52:52 +03001090 return -1;
1091 }
1092
1093 fwd = g_new(struct GuestFwd, 1);
1094 qemu_chr_fe_init(&fwd->hd, chr, &err);
1095 if (err) {
Hervé Poussineau5c843af2017-07-15 18:43:50 +02001096 error_propagate(errp, err);
Marc-André Lureau8e207c32019-01-17 15:43:36 +04001097 object_unparent(OBJECT(chr));
Alexander Grafb412eb62012-06-03 09:45:01 +02001098 g_free(fwd);
1099 return -1;
1100 }
Mark McLoughlin68ac40d2009-11-25 18:48:54 +00001101
Marc-André Lureau44b4ff22019-01-17 15:43:33 +04001102 if (slirp_add_guestfwd(s->slirp, guestfwd_write, &fwd->hd,
1103 &server, port) < 0) {
Hervé Poussineau5c843af2017-07-15 18:43:50 +02001104 error_setg(errp, "Conflicting/invalid host:port in guest "
1105 "forwarding rule '%s'", config_str);
Marc-André Lureau8e207c32019-01-17 15:43:36 +04001106 qemu_chr_fe_deinit(&fwd->hd, true);
Alexander Grafb412eb62012-06-03 09:45:01 +02001107 g_free(fwd);
1108 return -1;
1109 }
1110 fwd->server = server;
1111 fwd->port = port;
1112 fwd->slirp = s->slirp;
1113
Marc-André Lureau5345fdb2016-10-22 12:52:55 +03001114 qemu_chr_fe_set_handlers(&fwd->hd, guestfwd_can_read, guestfwd_read,
Anton Nefedov81517ba2017-07-06 15:08:49 +03001115 NULL, NULL, fwd, NULL, true);
Marc-André Lureau8d45a3b2019-01-17 15:43:35 +04001116 s->fwd = g_slist_append(s->fwd, fwd);
Alexander Grafb412eb62012-06-03 09:45:01 +02001117 }
Mark McLoughlin68ac40d2009-11-25 18:48:54 +00001118 return 0;
1119
1120 fail_syntax:
Hervé Poussineau5c843af2017-07-15 18:43:50 +02001121 error_setg(errp, "Invalid guest forwarding rule '%s'", config_str);
Mark McLoughlin68ac40d2009-11-25 18:48:54 +00001122 return -1;
1123}
1124
Markus Armbruster1ce6be22015-02-06 14:18:24 +01001125void hmp_info_usernet(Monitor *mon, const QDict *qdict)
Mark McLoughlin68ac40d2009-11-25 18:48:54 +00001126{
1127 SlirpState *s;
1128
1129 QTAILQ_FOREACH(s, &slirp_stacks, entry) {
Stefan Hajnoczi90d87a32012-07-24 16:35:06 +01001130 int id;
Thomas Huth442da402018-04-30 20:02:24 +02001131 bool got_hub_id = net_hub_id_for_client(&s->nc, &id) == 0;
Marc-André Lureaub7f43bf2018-11-10 17:45:43 +04001132 char *info = slirp_connection_info(s->slirp);
1133 monitor_printf(mon, "Hub %d (%s):\n%s",
Thomas Huth442da402018-04-30 20:02:24 +02001134 got_hub_id ? id : -1,
Marc-André Lureaub7f43bf2018-11-10 17:45:43 +04001135 s->nc.name, info);
1136 g_free(info);
Mark McLoughlin68ac40d2009-11-25 18:48:54 +00001137 }
1138}
1139
Laszlo Ersek094f15c2012-07-17 16:17:16 +02001140static void
1141net_init_slirp_configs(const StringList *fwd, int flags)
Mark McLoughlin68ac40d2009-11-25 18:48:54 +00001142{
Laszlo Ersek094f15c2012-07-17 16:17:16 +02001143 while (fwd) {
1144 struct slirp_config_str *config;
Mark McLoughlin68ac40d2009-11-25 18:48:54 +00001145
Laszlo Ersek094f15c2012-07-17 16:17:16 +02001146 config = g_malloc0(sizeof(*config));
1147 pstrcpy(config->str, sizeof(config->str), fwd->value->str);
1148 config->flags = flags;
1149 config->next = slirp_configs;
1150 slirp_configs = config;
1151
1152 fwd = fwd->next;
Mark McLoughlin68ac40d2009-11-25 18:48:54 +00001153 }
Mark McLoughlin68ac40d2009-11-25 18:48:54 +00001154}
1155
Klaus Stengel63d29602012-10-27 19:53:39 +02001156static const char **slirp_dnssearch(const StringList *dnsname)
1157{
1158 const StringList *c = dnsname;
1159 size_t i = 0, num_opts = 0;
1160 const char **ret;
1161
1162 while (c) {
1163 num_opts++;
1164 c = c->next;
1165 }
1166
1167 if (num_opts == 0) {
1168 return NULL;
1169 }
1170
1171 ret = g_malloc((num_opts + 1) * sizeof(*ret));
1172 c = dnsname;
1173 while (c) {
1174 ret[i++] = c->value->str;
1175 c = c->next;
1176 }
1177 ret[i] = NULL;
1178 return ret;
1179}
1180
Kővágó, Zoltáncebea512016-07-13 21:50:12 -06001181int net_init_slirp(const Netdev *netdev, const char *name,
Markus Armbrustera30ecde2015-05-15 13:58:50 +02001182 NetClientState *peer, Error **errp)
Mark McLoughlin68ac40d2009-11-25 18:48:54 +00001183{
1184 struct slirp_config_str *config;
Laszlo Ersek094f15c2012-07-17 16:17:16 +02001185 char *vnet;
Mark McLoughlin68ac40d2009-11-25 18:48:54 +00001186 int ret;
Laszlo Ersek094f15c2012-07-17 16:17:16 +02001187 const NetdevUserOptions *user;
Klaus Stengel63d29602012-10-27 19:53:39 +02001188 const char **dnssearch;
Samuel Thibault0b11c032016-03-20 12:29:54 +01001189 bool ipv4 = true, ipv6 = true;
Mark McLoughlin68ac40d2009-11-25 18:48:54 +00001190
Eric Blakef394b2e2016-07-13 21:50:23 -06001191 assert(netdev->type == NET_CLIENT_DRIVER_USER);
1192 user = &netdev->u.user;
Mark McLoughlin68ac40d2009-11-25 18:48:54 +00001193
Samuel Thibault0b11c032016-03-20 12:29:54 +01001194 if ((user->has_ipv6 && user->ipv6 && !user->has_ipv4) ||
1195 (user->has_ipv4 && !user->ipv4)) {
1196 ipv4 = 0;
1197 }
1198 if ((user->has_ipv4 && user->ipv4 && !user->has_ipv6) ||
1199 (user->has_ipv6 && !user->ipv6)) {
1200 ipv6 = 0;
1201 }
1202
Markus Armbruster74808742022-11-04 17:07:00 +01001203 vnet = user->net ? g_strdup(user->net) :
1204 user->ip ? g_strdup_printf("%s/24", user->ip) :
Laszlo Ersek094f15c2012-07-17 16:17:16 +02001205 NULL;
Jan Kiszkac54ed5b2011-07-20 12:20:14 +02001206
Klaus Stengel63d29602012-10-27 19:53:39 +02001207 dnssearch = slirp_dnssearch(user->dnssearch);
1208
Laszlo Ersek094f15c2012-07-17 16:17:16 +02001209 /* all optional fields are initialized to "all bits zero" */
Mark McLoughlin68ac40d2009-11-25 18:48:54 +00001210
Laszlo Ersek094f15c2012-07-17 16:17:16 +02001211 net_init_slirp_configs(user->hostfwd, SLIRP_CFG_HOSTFWD);
1212 net_init_slirp_configs(user->guestfwd, 0);
Mark McLoughlin68ac40d2009-11-25 18:48:54 +00001213
Samuel Thibault0b11c032016-03-20 12:29:54 +01001214 ret = net_slirp_init(peer, "user", name, user->q_restrict,
1215 ipv4, vnet, user->host,
1216 ipv6, user->ipv6_prefix, user->ipv6_prefixlen,
Samuel Thibaultd8eb3862016-03-25 00:02:58 +01001217 user->ipv6_host, user->hostname, user->tftp,
Yann Bordenave7aac5312016-03-15 10:31:22 +01001218 user->bootfile, user->dhcpstart,
Samuel Thibaultd8eb3862016-03-25 00:02:58 +01001219 user->dns, user->ipv6_dns, user->smb,
Fam Zheng0fca92b2018-09-14 15:26:16 +08001220 user->smbserver, dnssearch, user->domainname,
1221 user->tftp_server_name, errp);
Mark McLoughlin68ac40d2009-11-25 18:48:54 +00001222
1223 while (slirp_configs) {
1224 config = slirp_configs;
1225 slirp_configs = config->next;
Anthony Liguori7267c092011-08-20 22:09:37 -05001226 g_free(config);
Mark McLoughlin68ac40d2009-11-25 18:48:54 +00001227 }
1228
Anthony Liguori7267c092011-08-20 22:09:37 -05001229 g_free(vnet);
Klaus Stengel63d29602012-10-27 19:53:39 +02001230 g_free(dnssearch);
Mark McLoughlin68ac40d2009-11-25 18:48:54 +00001231
1232 return ret;
1233}