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qapi: Add device ID and head parameters to screendump
[qemu.git] / ui / vnc.c
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7d510b8c
FB		 1/*
2 * QEMU VNC display driver
5fafdf24 3 *
7d510b8c
FB		 4 * Copyright (C) 2006 Anthony Liguori <[email protected]>
5 * Copyright (C) 2006 Fabrice Bellard
19a490bf 6 * Copyright (C) 2009 Red Hat, Inc
5fafdf24 7 *
7d510b8c
FB		 8 * Permission is hereby granted, free of charge, to any person obtaining a copy
9 * of this software and associated documentation files (the "Software"), to deal
10 * in the Software without restriction, including without limitation the rights
11 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
12 * copies of the Software, and to permit persons to whom the Software is
13 * furnished to do so, subject to the following conditions:
14 *
15 * The above copyright notice and this permission notice shall be included in
16 * all copies or substantial portions of the Software.
17 *
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
19 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
20 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
21 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
22 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
23 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
24 * THE SOFTWARE.
25 */
26
e16f4c87 27#include "qemu/osdep.h"
19a490bf 28#include "vnc.h"
bd023f95 29#include "vnc-jobs.h"
40066175 30#include "trace.h"
9c17d615 31#include "sysemu/sysemu.h"
d49b6836 32#include "qemu/error-report.h"
922a01a0 33#include "qemu/option.h"
1de7afc9
PB		 34#include "qemu/sockets.h"
35#include "qemu/timer.h"
36#include "qemu/acl.h"
4db14629 37#include "qemu/config-file.h"
eb815e24 38#include "qapi/qapi-events.h"
e688df6b 39#include "qapi/error.h"
9af23989 40#include "qapi/qapi-commands-ui.h"
8d447d10 41#include "ui/input.h"
8e9b0d24 42#include "crypto/hash.h"
3e305e4a
DB		 43#include "crypto/tlscredsanon.h"
44#include "crypto/tlscredsx509.h"
45#include "qom/object_interfaces.h"
f348b6d1 46#include "qemu/cutils.h"
57a6d6d5 47#include "io/dns-resolver.h"
24236869 48
0f7b2864 49#define VNC_REFRESH_INTERVAL_BASE GUI_REFRESH_INTERVAL_DEFAULT
2430ffe4 50#define VNC_REFRESH_INTERVAL_INC 50
0f7b2864 51#define VNC_REFRESH_INTERVAL_MAX GUI_REFRESH_INTERVAL_IDLE
999342a0
CC		 52static const struct timeval VNC_REFRESH_STATS = { 0, 500000 };
53static const struct timeval VNC_REFRESH_LOSSY = { 2, 0 };
24236869
FB		 54
55#include "vnc_keysym.h"
800567a6 56#include "crypto/cipher.h"
70848515 57
d616ccc5
GH		 58static QTAILQ_HEAD(, VncDisplay) vnc_displays =
59 QTAILQ_HEAD_INITIALIZER(vnc_displays);
a9ce8590 60
d467b679 61static int vnc_cursor_define(VncState *vs);
7bc9318b 62static void vnc_release_modifiers(VncState *vs);
e2b72cb6 63static void vnc_update_throttle_offset(VncState *vs);
d467b679 64
8cf36489
GH		 65static void vnc_set_share_mode(VncState *vs, VncShareMode mode)
66{
67#ifdef _VNC_DEBUG
68 static const char *mn[] = {
69 [0] = "undefined",
70 [VNC_SHARE_MODE_CONNECTING] = "connecting",
71 [VNC_SHARE_MODE_SHARED] = "shared",
72 [VNC_SHARE_MODE_EXCLUSIVE] = "exclusive",
73 [VNC_SHARE_MODE_DISCONNECTED] = "disconnected",
74 };
04d2529d
DB		 75 fprintf(stderr, "%s/%p: %s -> %s\n", __func__,
76 vs->ioc, mn[vs->share_mode], mn[mode]);
8cf36489
GH		 77#endif
78
e5f34cdd
GH		 79 switch (vs->share_mode) {
80 case VNC_SHARE_MODE_CONNECTING:
81 vs->vd->num_connecting--;
82 break;
83 case VNC_SHARE_MODE_SHARED:
84 vs->vd->num_shared--;
85 break;
86 case VNC_SHARE_MODE_EXCLUSIVE:
8cf36489 87 vs->vd->num_exclusive--;
e5f34cdd
GH		 88 break;
89 default:
90 break;
8cf36489 91 }
e5f34cdd 92
8cf36489 93 vs->share_mode = mode;
e5f34cdd
GH		 94
95 switch (vs->share_mode) {
96 case VNC_SHARE_MODE_CONNECTING:
97 vs->vd->num_connecting++;
98 break;
99 case VNC_SHARE_MODE_SHARED:
100 vs->vd->num_shared++;
101 break;
102 case VNC_SHARE_MODE_EXCLUSIVE:
8cf36489 103 vs->vd->num_exclusive++;
e5f34cdd
GH		 104 break;
105 default:
106 break;
8cf36489
GH		 107 }
108}
109
1ff7df1a 110
bd269ebc 111static void vnc_init_basic_info(SocketAddress *addr,
98481bfc
EB		 112 VncBasicInfo *info,
113 Error **errp)
d96fd29c 114{
04d2529d 115 switch (addr->type) {
bd269ebc
MA		 116 case SOCKET_ADDRESS_TYPE_INET:
117 info->host = g_strdup(addr->u.inet.host);
118 info->service = g_strdup(addr->u.inet.port);
119 if (addr->u.inet.ipv6) {
04d2529d
DB		 120 info->family = NETWORK_ADDRESS_FAMILY_IPV6;
121 } else {
122 info->family = NETWORK_ADDRESS_FAMILY_IPV4;
123 }
124 break;
d96fd29c 125
bd269ebc 126 case SOCKET_ADDRESS_TYPE_UNIX:
04d2529d 127 info->host = g_strdup("");
bd269ebc 128 info->service = g_strdup(addr->u.q_unix.path);
04d2529d
DB		 129 info->family = NETWORK_ADDRESS_FAMILY_UNIX;
130 break;
131
bd269ebc
MA		 132 case SOCKET_ADDRESS_TYPE_VSOCK:
133 case SOCKET_ADDRESS_TYPE_FD:
a6c76285 134 error_setg(errp, "Unsupported socket address type %s",
977c736f 135 SocketAddressType_str(addr->type));
04d2529d 136 break;
a6c76285
MA		 137 default:
138 abort();
d96fd29c
LC		 139 }
140
04d2529d 141 return;
d96fd29c
LC		 142}
143
04d2529d
DB		 144static void vnc_init_basic_info_from_server_addr(QIOChannelSocket *ioc,
145 VncBasicInfo *info,
98481bfc 146 Error **errp)
d96fd29c 147{
bd269ebc 148 SocketAddress *addr = NULL;
d96fd29c 149
624cdd46
DB		 150 if (!ioc) {
151 error_setg(errp, "No listener socket available");
152 return;
153 }
154
04d2529d
DB		 155 addr = qio_channel_socket_get_local_address(ioc, errp);
156 if (!addr) {
98481bfc 157 return;
d96fd29c
LC		 158 }
159
04d2529d 160 vnc_init_basic_info(addr, info, errp);
bd269ebc 161 qapi_free_SocketAddress(addr);
d96fd29c
LC		 162}
163
04d2529d
DB		 164static void vnc_init_basic_info_from_remote_addr(QIOChannelSocket *ioc,
165 VncBasicInfo *info,
98481bfc 166 Error **errp)
d96fd29c 167{
bd269ebc 168 SocketAddress *addr = NULL;
d96fd29c 169
04d2529d
DB		 170 addr = qio_channel_socket_get_remote_address(ioc, errp);
171 if (!addr) {
98481bfc 172 return;
d96fd29c
LC		 173 }
174
04d2529d 175 vnc_init_basic_info(addr, info, errp);
bd269ebc 176 qapi_free_SocketAddress(addr);
d96fd29c
LC		 177}
178
1ff7df1a
AL		 179static const char *vnc_auth_name(VncDisplay *vd) {
180 switch (vd->auth) {
181 case VNC_AUTH_INVALID:
182 return "invalid";
183 case VNC_AUTH_NONE:
184 return "none";
185 case VNC_AUTH_VNC:
186 return "vnc";
187 case VNC_AUTH_RA2:
188 return "ra2";
189 case VNC_AUTH_RA2NE:
190 return "ra2ne";
191 case VNC_AUTH_TIGHT:
192 return "tight";
193 case VNC_AUTH_ULTRA:
194 return "ultra";
195 case VNC_AUTH_TLS:
196 return "tls";
197 case VNC_AUTH_VENCRYPT:
1ff7df1a
AL		 198 switch (vd->subauth) {
199 case VNC_AUTH_VENCRYPT_PLAIN:
200 return "vencrypt+plain";
201 case VNC_AUTH_VENCRYPT_TLSNONE:
202 return "vencrypt+tls+none";
203 case VNC_AUTH_VENCRYPT_TLSVNC:
204 return "vencrypt+tls+vnc";
205 case VNC_AUTH_VENCRYPT_TLSPLAIN:
206 return "vencrypt+tls+plain";
207 case VNC_AUTH_VENCRYPT_X509NONE:
208 return "vencrypt+x509+none";
209 case VNC_AUTH_VENCRYPT_X509VNC:
210 return "vencrypt+x509+vnc";
211 case VNC_AUTH_VENCRYPT_X509PLAIN:
212 return "vencrypt+x509+plain";
28a76be8
AL		 213 case VNC_AUTH_VENCRYPT_TLSSASL:
214 return "vencrypt+tls+sasl";
215 case VNC_AUTH_VENCRYPT_X509SASL:
216 return "vencrypt+x509+sasl";
1ff7df1a
AL		 217 default:
218 return "vencrypt";
219 }
2f9606b3 220 case VNC_AUTH_SASL:
28a76be8 221 return "sasl";
1ff7df1a
AL		 222 }
223 return "unknown";
224}
225
d616ccc5 226static VncServerInfo *vnc_server_info_get(VncDisplay *vd)
a7789382 227{
fb6ba0d5 228 VncServerInfo *info;
98481bfc 229 Error *err = NULL;
a7789382 230
13e1d0e7 231 if (!vd->listener || !vd->listener->nsioc) {
4ee74fa7
DB		 232 return NULL;
233 }
234
3e7f136d 235 info = g_malloc0(sizeof(*info));
13e1d0e7 236 vnc_init_basic_info_from_server_addr(vd->listener->sioc[0],
ddf21908 237 qapi_VncServerInfo_base(info), &err);
fb6ba0d5 238 info->has_auth = true;
d616ccc5 239 info->auth = g_strdup(vnc_auth_name(vd));
98481bfc
EB		 240 if (err) {
241 qapi_free_VncServerInfo(info);
242 info = NULL;
243 error_free(err);
244 }
fb6ba0d5 245 return info;
a7789382
LC		 246}
247
4a80dba3 248static void vnc_client_cache_auth(VncState *client)
1ff7df1a 249{
4a80dba3
LC		 250 if (!client->info) {
251 return;
d96fd29c 252 }
1263b7d6 253
3e305e4a
DB		 254 if (client->tls) {
255 client->info->x509_dname =
256 qcrypto_tls_session_get_peer_name(client->tls);
257 client->info->has_x509_dname =
258 client->info->x509_dname != NULL;
d96fd29c 259 }
1263b7d6
AL		 260#ifdef CONFIG_VNC_SASL
261 if (client->sasl.conn &&
d96fd29c 262 client->sasl.username) {
fb6ba0d5
WX		 263 client->info->has_sasl_username = true;
264 client->info->sasl_username = g_strdup(client->sasl.username);
d96fd29c 265 }
1263b7d6 266#endif
4a80dba3 267}
d96fd29c 268
4a80dba3
LC		 269static void vnc_client_cache_addr(VncState *client)
270{
98481bfc
EB		 271 Error *err = NULL;
272
273 client->info = g_malloc0(sizeof(*client->info));
04d2529d 274 vnc_init_basic_info_from_remote_addr(client->sioc,
ddf21908 275 qapi_VncClientInfo_base(client->info),
98481bfc
EB		 276 &err);
277 if (err) {
278 qapi_free_VncClientInfo(client->info);
279 client->info = NULL;
280 error_free(err);
4a80dba3 281 }
1ff7df1a
AL		 282}
283
fb6ba0d5 284static void vnc_qmp_event(VncState *vs, QAPIEvent event)
586153d9 285{
fb6ba0d5 286 VncServerInfo *si;
586153d9
LC		 287
288 if (!vs->info) {
289 return;
290 }
291
d616ccc5 292 si = vnc_server_info_get(vs->vd);
fb6ba0d5 293 if (!si) {
586153d9
LC		 294 return;
295 }
296
fb6ba0d5
WX		 297 switch (event) {
298 case QAPI_EVENT_VNC_CONNECTED:
ddf21908
EB		 299 qapi_event_send_vnc_connected(si, qapi_VncClientInfo_base(vs->info),
300 &error_abort);
fb6ba0d5
WX		 301 break;
302 case QAPI_EVENT_VNC_INITIALIZED:
303 qapi_event_send_vnc_initialized(si, vs->info, &error_abort);
304 break;
305 case QAPI_EVENT_VNC_DISCONNECTED:
306 qapi_event_send_vnc_disconnected(si, vs->info, &error_abort);
307 break;
308 default:
309 break;
310 }
586153d9 311
fb6ba0d5 312 qapi_free_VncServerInfo(si);
586153d9
LC		 313}
314
2b54aa87 315static VncClientInfo *qmp_query_vnc_client(const VncState *client)
a9ce8590 316{
2b54aa87 317 VncClientInfo *info;
04d2529d 318 Error *err = NULL;
2b54aa87 319
04d2529d 320 info = g_malloc0(sizeof(*info));
2b54aa87 321
04d2529d
DB		 322 vnc_init_basic_info_from_remote_addr(client->sioc,
323 qapi_VncClientInfo_base(info),
324 &err);
325 if (err) {
326 error_free(err);
327 qapi_free_VncClientInfo(info);
2b54aa87
LC		 328 return NULL;
329 }
d96fd29c 330
ddf21908 331 info->websocket = client->websocket;
d96fd29c 332
3e305e4a
DB		 333 if (client->tls) {
334 info->x509_dname = qcrypto_tls_session_get_peer_name(client->tls);
335 info->has_x509_dname = info->x509_dname != NULL;
2b54aa87 336 }
d96fd29c 337#ifdef CONFIG_VNC_SASL
2b54aa87
LC		 338 if (client->sasl.conn && client->sasl.username) {
339 info->has_sasl_username = true;
340 info->sasl_username = g_strdup(client->sasl.username);
d96fd29c 341 }
2b54aa87 342#endif
1ff7df1a 343
2b54aa87 344 return info;
d96fd29c 345}
1ff7df1a 346
d616ccc5
GH		 347static VncDisplay *vnc_display_find(const char *id)
348{
349 VncDisplay *vd;
350
351 if (id == NULL) {
352 return QTAILQ_FIRST(&vnc_displays);
353 }
354 QTAILQ_FOREACH(vd, &vnc_displays, next) {
355 if (strcmp(id, vd->id) == 0) {
356 return vd;
357 }
358 }
359 return NULL;
360}
361
2d29a436
GH		 362static VncClientInfoList *qmp_query_client_list(VncDisplay *vd)
363{
364 VncClientInfoList *cinfo, *prev = NULL;
365 VncState *client;
366
367 QTAILQ_FOREACH(client, &vd->clients, next) {
368 cinfo = g_new0(VncClientInfoList, 1);
369 cinfo->value = qmp_query_vnc_client(client);
370 cinfo->next = prev;
371 prev = cinfo;
372 }
373 return prev;
374}
375
2b54aa87 376VncInfo *qmp_query_vnc(Error **errp)
d96fd29c 377{
2b54aa87 378 VncInfo *info = g_malloc0(sizeof(*info));
d616ccc5 379 VncDisplay *vd = vnc_display_find(NULL);
bd269ebc 380 SocketAddress *addr = NULL;
2b54aa87 381
13e1d0e7 382 if (vd == NULL || !vd->listener || !vd->listener->nsioc) {
2b54aa87 383 info->enabled = false;
d96fd29c 384 } else {
2b54aa87
LC		 385 info->enabled = true;
386
387 /* for compatibility with the original command */
388 info->has_clients = true;
2d29a436 389 info->clients = qmp_query_client_list(vd);
d96fd29c 390
13e1d0e7
DB		 391 addr = qio_channel_socket_get_local_address(vd->listener->sioc[0],
392 errp);
04d2529d 393 if (!addr) {
2b54aa87
LC		 394 goto out_error;
395 }
d96fd29c 396
04d2529d 397 switch (addr->type) {
bd269ebc
MA		 398 case SOCKET_ADDRESS_TYPE_INET:
399 info->host = g_strdup(addr->u.inet.host);
400 info->service = g_strdup(addr->u.inet.port);
401 if (addr->u.inet.ipv6) {
04d2529d
DB		 402 info->family = NETWORK_ADDRESS_FAMILY_IPV6;
403 } else {
404 info->family = NETWORK_ADDRESS_FAMILY_IPV4;
405 }
406 break;
407
bd269ebc 408 case SOCKET_ADDRESS_TYPE_UNIX:
04d2529d 409 info->host = g_strdup("");
bd269ebc 410 info->service = g_strdup(addr->u.q_unix.path);
04d2529d
DB		 411 info->family = NETWORK_ADDRESS_FAMILY_UNIX;
412 break;
413
bd269ebc
MA		 414 case SOCKET_ADDRESS_TYPE_VSOCK:
415 case SOCKET_ADDRESS_TYPE_FD:
a6c76285 416 error_setg(errp, "Unsupported socket address type %s",
977c736f 417 SocketAddressType_str(addr->type));
2b54aa87 418 goto out_error;
a6c76285
MA		 419 default:
420 abort();
1ff7df1a 421 }
2b54aa87
LC		 422
423 info->has_host = true;
2b54aa87 424 info->has_service = true;
2b54aa87 425 info->has_family = true;
2b54aa87
LC		 426
427 info->has_auth = true;
d616ccc5 428 info->auth = g_strdup(vnc_auth_name(vd));
a9ce8590 429 }
2b54aa87 430
bd269ebc 431 qapi_free_SocketAddress(addr);
2b54aa87
LC		 432 return info;
433
434out_error:
bd269ebc 435 qapi_free_SocketAddress(addr);
2b54aa87
LC		 436 qapi_free_VncInfo(info);
437 return NULL;
a9ce8590
FB		 438}
439
2a7e6857
DB		 440
441static void qmp_query_auth(int auth, int subauth,
442 VncPrimaryAuth *qmp_auth,
443 VncVencryptSubAuth *qmp_vencrypt,
444 bool *qmp_has_vencrypt);
445
446static VncServerInfo2List *qmp_query_server_entry(QIOChannelSocket *ioc,
447 bool websocket,
448 int auth,
449 int subauth,
450 VncServerInfo2List *prev)
df887684 451{
2a7e6857
DB		 452 VncServerInfo2List *list;
453 VncServerInfo2 *info;
04d2529d 454 Error *err = NULL;
bd269ebc 455 SocketAddress *addr;
04d2529d
DB		 456
457 addr = qio_channel_socket_get_local_address(ioc, &err);
458 if (!addr) {
459 error_free(err);
df887684
GH		 460 return prev;
461 }
462
2a7e6857
DB		 463 info = g_new0(VncServerInfo2, 1);
464 vnc_init_basic_info(addr, qapi_VncServerInfo2_base(info), &err);
bd269ebc 465 qapi_free_SocketAddress(addr);
04d2529d 466 if (err) {
2a7e6857 467 qapi_free_VncServerInfo2(info);
04d2529d
DB		 468 error_free(err);
469 return prev;
470 }
4478aa76 471 info->websocket = websocket;
df887684 472
2a7e6857
DB		 473 qmp_query_auth(auth, subauth, &info->auth,
474 &info->vencrypt, &info->has_vencrypt);
475
476 list = g_new0(VncServerInfo2List, 1);
df887684
GH		 477 list->value = info;
478 list->next = prev;
479 return list;
480}
481
2a7e6857
DB		 482static void qmp_query_auth(int auth, int subauth,
483 VncPrimaryAuth *qmp_auth,
484 VncVencryptSubAuth *qmp_vencrypt,
485 bool *qmp_has_vencrypt)
df887684 486{
2a7e6857 487 switch (auth) {
df887684 488 case VNC_AUTH_VNC:
2a7e6857 489 *qmp_auth = VNC_PRIMARY_AUTH_VNC;
df887684
GH		 490 break;
491 case VNC_AUTH_RA2:
2a7e6857 492 *qmp_auth = VNC_PRIMARY_AUTH_RA2;
df887684
GH		 493 break;
494 case VNC_AUTH_RA2NE:
2a7e6857 495 *qmp_auth = VNC_PRIMARY_AUTH_RA2NE;
df887684
GH		 496 break;
497 case VNC_AUTH_TIGHT:
2a7e6857 498 *qmp_auth = VNC_PRIMARY_AUTH_TIGHT;
df887684
GH		 499 break;
500 case VNC_AUTH_ULTRA:
2a7e6857 501 *qmp_auth = VNC_PRIMARY_AUTH_ULTRA;
df887684
GH		 502 break;
503 case VNC_AUTH_TLS:
2a7e6857 504 *qmp_auth = VNC_PRIMARY_AUTH_TLS;
df887684
GH		 505 break;
506 case VNC_AUTH_VENCRYPT:
2a7e6857
DB		 507 *qmp_auth = VNC_PRIMARY_AUTH_VENCRYPT;
508 *qmp_has_vencrypt = true;
509 switch (subauth) {
df887684 510 case VNC_AUTH_VENCRYPT_PLAIN:
2a7e6857 511 *qmp_vencrypt = VNC_VENCRYPT_SUB_AUTH_PLAIN;
df887684
GH		 512 break;
513 case VNC_AUTH_VENCRYPT_TLSNONE:
2a7e6857 514 *qmp_vencrypt = VNC_VENCRYPT_SUB_AUTH_TLS_NONE;
df887684
GH		 515 break;
516 case VNC_AUTH_VENCRYPT_TLSVNC:
2a7e6857 517 *qmp_vencrypt = VNC_VENCRYPT_SUB_AUTH_TLS_VNC;
df887684
GH		 518 break;
519 case VNC_AUTH_VENCRYPT_TLSPLAIN:
2a7e6857 520 *qmp_vencrypt = VNC_VENCRYPT_SUB_AUTH_TLS_PLAIN;
df887684
GH		 521 break;
522 case VNC_AUTH_VENCRYPT_X509NONE:
2a7e6857 523 *qmp_vencrypt = VNC_VENCRYPT_SUB_AUTH_X509_NONE;
df887684
GH		 524 break;
525 case VNC_AUTH_VENCRYPT_X509VNC:
2a7e6857 526 *qmp_vencrypt = VNC_VENCRYPT_SUB_AUTH_X509_VNC;
df887684
GH		 527 break;
528 case VNC_AUTH_VENCRYPT_X509PLAIN:
2a7e6857 529 *qmp_vencrypt = VNC_VENCRYPT_SUB_AUTH_X509_PLAIN;
df887684
GH		 530 break;
531 case VNC_AUTH_VENCRYPT_TLSSASL:
2a7e6857 532 *qmp_vencrypt = VNC_VENCRYPT_SUB_AUTH_TLS_SASL;
df887684
GH		 533 break;
534 case VNC_AUTH_VENCRYPT_X509SASL:
2a7e6857 535 *qmp_vencrypt = VNC_VENCRYPT_SUB_AUTH_X509_SASL;
df887684
GH		 536 break;
537 default:
2a7e6857 538 *qmp_has_vencrypt = false;
df887684
GH		 539 break;
540 }
df887684
GH		 541 break;
542 case VNC_AUTH_SASL:
2a7e6857 543 *qmp_auth = VNC_PRIMARY_AUTH_SASL;
df887684
GH		 544 break;
545 case VNC_AUTH_NONE:
546 default:
2a7e6857 547 *qmp_auth = VNC_PRIMARY_AUTH_NONE;
df887684
GH		 548 break;
549 }
550}
551
552VncInfo2List *qmp_query_vnc_servers(Error **errp)
553{
554 VncInfo2List *item, *prev = NULL;
555 VncInfo2 *info;
556 VncDisplay *vd;
557 DeviceState *dev;
4ee74fa7 558 size_t i;
df887684
GH		 559
560 QTAILQ_FOREACH(vd, &vnc_displays, next) {
561 info = g_new0(VncInfo2, 1);
562 info->id = g_strdup(vd->id);
563 info->clients = qmp_query_client_list(vd);
2a7e6857
DB		 564 qmp_query_auth(vd->auth, vd->subauth, &info->auth,
565 &info->vencrypt, &info->has_vencrypt);
df887684
GH		 566 if (vd->dcl.con) {
567 dev = DEVICE(object_property_get_link(OBJECT(vd->dcl.con),
568 "device", NULL));
569 info->has_display = true;
570 info->display = g_strdup(dev->id);
571 }
13e1d0e7 572 for (i = 0; vd->listener != NULL && i < vd->listener->nsioc; i++) {
04d2529d 573 info->server = qmp_query_server_entry(
13e1d0e7
DB		 574 vd->listener->sioc[i], false, vd->auth, vd->subauth,
575 info->server);
df887684 576 }
13e1d0e7 577 for (i = 0; vd->wslistener != NULL && i < vd->wslistener->nsioc; i++) {
04d2529d 578 info->server = qmp_query_server_entry(
13e1d0e7 579 vd->wslistener->sioc[i], true, vd->ws_auth,
4ee74fa7 580 vd->ws_subauth, info->server);
df887684 581 }
df887684
GH		 582
583 item = g_new0(VncInfo2List, 1);
584 item->value = info;
585 item->next = prev;
586 prev = item;
587 }
588 return prev;
589}
590
24236869
FB		 591/* TODO
592 1) Get the queue working for IO.
593 2) there is some weirdness when using the -S option (the screen is grey
594 and not totally invalidated
595 3) resolutions > 1024
596*/
597
6af998db 598static int vnc_update_client(VncState *vs, int has_dirty);
198a0039 599static void vnc_disconnect_start(VncState *vs);
24236869 600
753b4053 601static void vnc_colordepth(VncState *vs);
1fc62412
SS		 602static void framebuffer_update_request(VncState *vs, int incremental,
603 int x_position, int y_position,
604 int w, int h);
0f7b2864 605static void vnc_refresh(DisplayChangeListener *dcl);
1fc62412 606static int vnc_refresh_server_surface(VncDisplay *vd);
7eac3a87 607
d05959c2
GH		 608static int vnc_width(VncDisplay *vd)
609{
610 return MIN(VNC_MAX_WIDTH, ROUND_UP(surface_width(vd->ds),
611 VNC_DIRTY_PIXELS_PER_BIT));
612}
613
614static int vnc_height(VncDisplay *vd)
615{
616 return MIN(VNC_MAX_HEIGHT, surface_height(vd->ds));
617}
618
bea60dd7
PL		 619static void vnc_set_area_dirty(DECLARE_BITMAP(dirty[VNC_MAX_HEIGHT],
620 VNC_MAX_WIDTH / VNC_DIRTY_PIXELS_PER_BIT),
f7b3d68c
GH		 621 VncDisplay *vd,
622 int x, int y, int w, int h)
623{
624 int width = vnc_width(vd);
625 int height = vnc_height(vd);
626
91937225
PL		 627 /* this is needed this to ensure we updated all affected
628 * blocks if x % VNC_DIRTY_PIXELS_PER_BIT != 0 */
b4c85ddc
PL		 629 w += (x % VNC_DIRTY_PIXELS_PER_BIT);
630 x -= (x % VNC_DIRTY_PIXELS_PER_BIT);
0486e8a7 631
9f64916d
GH		 632 x = MIN(x, width);
633 y = MIN(y, height);
634 w = MIN(x + w, width) - x;
91937225 635 h = MIN(y + h, height);
788abf8e 636
b4c85ddc 637 for (; y < h; y++) {
bea60dd7 638 bitmap_set(dirty[y], x / VNC_DIRTY_PIXELS_PER_BIT,
91937225 639 DIV_ROUND_UP(w, VNC_DIRTY_PIXELS_PER_BIT));
b4c85ddc 640 }
24236869
FB		 641}
642
bea60dd7
PL		 643static void vnc_dpy_update(DisplayChangeListener *dcl,
644 int x, int y, int w, int h)
645{
646 VncDisplay *vd = container_of(dcl, VncDisplay, dcl);
647 struct VncSurface *s = &vd->guest;
bea60dd7 648
f7b3d68c 649 vnc_set_area_dirty(s->dirty, vd, x, y, w, h);
bea60dd7
PL		 650}
651
70a4568f
CC		 652void vnc_framebuffer_update(VncState *vs, int x, int y, int w, int h,
653 int32_t encoding)
24236869
FB		 654{
655 vnc_write_u16(vs, x);
656 vnc_write_u16(vs, y);
657 vnc_write_u16(vs, w);
658 vnc_write_u16(vs, h);
659
660 vnc_write_s32(vs, encoding);
661}
662
32ed2680 663
621aaeb9
GH		 664static void vnc_desktop_resize(VncState *vs)
665{
04d2529d 666 if (vs->ioc == NULL || !vnc_has_feature(vs, VNC_FEATURE_RESIZE)) {
621aaeb9
GH		 667 return;
668 }
bea60dd7
PL		 669 if (vs->client_width == pixman_image_get_width(vs->vd->server) &&
670 vs->client_height == pixman_image_get_height(vs->vd->server)) {
1d4b638a
GH		 671 return;
672 }
4c956bd8
DB		 673
674 assert(pixman_image_get_width(vs->vd->server) < 65536 &&
675 pixman_image_get_width(vs->vd->server) >= 0);
676 assert(pixman_image_get_height(vs->vd->server) < 65536 &&
677 pixman_image_get_height(vs->vd->server) >= 0);
bea60dd7
PL		 678 vs->client_width = pixman_image_get_width(vs->vd->server);
679 vs->client_height = pixman_image_get_height(vs->vd->server);
bd023f95 680 vnc_lock_output(vs);
621aaeb9
GH		 681 vnc_write_u8(vs, VNC_MSG_SERVER_FRAMEBUFFER_UPDATE);
682 vnc_write_u8(vs, 0);
683 vnc_write_u16(vs, 1); /* number of rects */
5862d195 684 vnc_framebuffer_update(vs, 0, 0, vs->client_width, vs->client_height,
621aaeb9 685 VNC_ENCODING_DESKTOPRESIZE);
bd023f95 686 vnc_unlock_output(vs);
621aaeb9
GH		 687 vnc_flush(vs);
688}
689
bd023f95
CC		 690static void vnc_abort_display_jobs(VncDisplay *vd)
691{
692 VncState *vs;
693
694 QTAILQ_FOREACH(vs, &vd->clients, next) {
695 vnc_lock_output(vs);
696 vs->abort = true;
697 vnc_unlock_output(vs);
698 }
699 QTAILQ_FOREACH(vs, &vd->clients, next) {
700 vnc_jobs_join(vs);
701 }
702 QTAILQ_FOREACH(vs, &vd->clients, next) {
703 vnc_lock_output(vs);
704 vs->abort = false;
705 vnc_unlock_output(vs);
706 }
707}
bd023f95 708
9f64916d
GH		 709int vnc_server_fb_stride(VncDisplay *vd)
710{
711 return pixman_image_get_stride(vd->server);
712}
713
714void *vnc_server_fb_ptr(VncDisplay *vd, int x, int y)
715{
716 uint8_t *ptr;
717
718 ptr = (uint8_t *)pixman_image_get_data(vd->server);
719 ptr += y * vnc_server_fb_stride(vd);
720 ptr += x * VNC_SERVER_FB_BYTES;
721 return ptr;
722}
723
453f842b
GH		 724static void vnc_update_server_surface(VncDisplay *vd)
725{
b69a553b
DB		 726 int width, height;
727
453f842b
GH		 728 qemu_pixman_image_unref(vd->server);
729 vd->server = NULL;
730
c7628bff
GH		 731 if (QTAILQ_EMPTY(&vd->clients)) {
732 return;
733 }
734
b69a553b
DB		 735 width = vnc_width(vd);
736 height = vnc_height(vd);
453f842b 737 vd->server = pixman_image_create_bits(VNC_SERVER_FB_FORMAT,
b69a553b 738 width, height,
453f842b 739 NULL, 0);
b69a553b
DB		 740
741 memset(vd->guest.dirty, 0x00, sizeof(vd->guest.dirty));
742 vnc_set_area_dirty(vd->guest.dirty, vd, 0, 0,
743 width, height);
453f842b
GH		 744}
745
c12aeb86 746static void vnc_dpy_switch(DisplayChangeListener *dcl,
c12aeb86 747 DisplaySurface *surface)
24236869 748{
2e5567c9
GH		 749 static const char placeholder_msg[] =
750 "Display output is not active.";
751 static DisplaySurface *placeholder;
21ef45d7 752 VncDisplay *vd = container_of(dcl, VncDisplay, dcl);
41b4bef6 753 VncState *vs;
1fc62412 754
2e5567c9
GH		 755 if (surface == NULL) {
756 if (placeholder == NULL) {
757 placeholder = qemu_create_message_surface(640, 480, placeholder_msg);
758 }
759 surface = placeholder;
760 }
761
bd023f95 762 vnc_abort_display_jobs(vd);
453f842b 763 vd->ds = surface;
bd023f95 764
1fc62412 765 /* server surface */
453f842b 766 vnc_update_server_surface(vd);
24236869 767
6baebed7 768 /* guest surface */
9f64916d 769 qemu_pixman_image_unref(vd->guest.fb);
d39fa6d8
GH		 770 vd->guest.fb = pixman_image_ref(surface->image);
771 vd->guest.format = surface->format;
24236869 772
41b4bef6 773 QTAILQ_FOREACH(vs, &vd->clients, next) {
1fc62412 774 vnc_colordepth(vs);
1d4b638a 775 vnc_desktop_resize(vs);
d467b679
GH		 776 if (vs->vd->cursor) {
777 vnc_cursor_define(vs);
778 }
bea60dd7 779 memset(vs->dirty, 0x00, sizeof(vs->dirty));
f7b3d68c 780 vnc_set_area_dirty(vs->dirty, vd, 0, 0,
b69a553b
DB		 781 vnc_width(vd),
782 vnc_height(vd));
e2b72cb6 783 vnc_update_throttle_offset(vs);
753b4053
AL		 784 }
785}
786
3512779a 787/* fastest code */
9f64916d 788static void vnc_write_pixels_copy(VncState *vs,
d467b679 789 void *pixels, int size)
3512779a
FB		 790{
791 vnc_write(vs, pixels, size);
792}
793
794/* slowest but generic code. */
70a4568f 795void vnc_convert_pixel(VncState *vs, uint8_t *buf, uint32_t v)
3512779a 796{
7eac3a87 797 uint8_t r, g, b;
1fc62412 798
9f64916d
GH		 799#if VNC_SERVER_FB_FORMAT == PIXMAN_FORMAT(32, PIXMAN_TYPE_ARGB, 0, 8, 8, 8)
800 r = (((v & 0x00ff0000) >> 16) << vs->client_pf.rbits) >> 8;
801 g = (((v & 0x0000ff00) >> 8) << vs->client_pf.gbits) >> 8;
802 b = (((v & 0x000000ff) >> 0) << vs->client_pf.bbits) >> 8;
803#else
804# error need some bits here if you change VNC_SERVER_FB_FORMAT
805#endif
806 v = (r << vs->client_pf.rshift) |
807 (g << vs->client_pf.gshift) |
808 (b << vs->client_pf.bshift);
809 switch (vs->client_pf.bytes_per_pixel) {
3512779a
FB		 810 case 1:
811 buf[0] = v;
812 break;
813 case 2:
9f64916d 814 if (vs->client_be) {
3512779a
FB		 815 buf[0] = v >> 8;
816 buf[1] = v;
817 } else {
818 buf[1] = v >> 8;
819 buf[0] = v;
820 }
821 break;
822 default:
823 case 4:
9f64916d 824 if (vs->client_be) {
3512779a
FB		 825 buf[0] = v >> 24;
826 buf[1] = v >> 16;
827 buf[2] = v >> 8;
828 buf[3] = v;
829 } else {
830 buf[3] = v >> 24;
831 buf[2] = v >> 16;
832 buf[1] = v >> 8;
833 buf[0] = v;
834 }
835 break;
836 }
837}
838
9f64916d 839static void vnc_write_pixels_generic(VncState *vs,
d467b679 840 void *pixels1, int size)
3512779a 841{
3512779a 842 uint8_t buf[4];
3512779a 843
9f64916d 844 if (VNC_SERVER_FB_BYTES == 4) {
7eac3a87
AL		 845 uint32_t *pixels = pixels1;
846 int n, i;
847 n = size >> 2;
9f64916d 848 for (i = 0; i < n; i++) {
7eac3a87 849 vnc_convert_pixel(vs, buf, pixels[i]);
9f64916d 850 vnc_write(vs, buf, vs->client_pf.bytes_per_pixel);
7eac3a87 851 }
3512779a
FB		 852 }
853}
854
a885211e 855int vnc_raw_send_framebuffer_update(VncState *vs, int x, int y, int w, int h)
24236869
FB		 856{
857 int i;
60fe76f3 858 uint8_t *row;
1fc62412 859 VncDisplay *vd = vs->vd;
24236869 860
9f64916d 861 row = vnc_server_fb_ptr(vd, x, y);
24236869 862 for (i = 0; i < h; i++) {
9f64916d
GH		 863 vs->write_pixels(vs, row, w * VNC_SERVER_FB_BYTES);
864 row += vnc_server_fb_stride(vd);
24236869 865 }
a885211e 866 return 1;
24236869
FB		 867}
868
bd023f95 869int vnc_send_framebuffer_update(VncState *vs, int x, int y, int w, int h)
24236869 870{
a885211e 871 int n = 0;
de3f7de7
PL		 872 bool encode_raw = false;
873 size_t saved_offs = vs->output.offset;
a885211e 874
fb437313 875 switch(vs->vnc_encoding) {
28a76be8 876 case VNC_ENCODING_ZLIB:
a885211e 877 n = vnc_zlib_send_framebuffer_update(vs, x, y, w, h);
28a76be8
AL		 878 break;
879 case VNC_ENCODING_HEXTILE:
880 vnc_framebuffer_update(vs, x, y, w, h, VNC_ENCODING_HEXTILE);
a885211e 881 n = vnc_hextile_send_framebuffer_update(vs, x, y, w, h);
28a76be8 882 break;
380282b0
CC		 883 case VNC_ENCODING_TIGHT:
884 n = vnc_tight_send_framebuffer_update(vs, x, y, w, h);
885 break;
efe556ad
CC		 886 case VNC_ENCODING_TIGHT_PNG:
887 n = vnc_tight_png_send_framebuffer_update(vs, x, y, w, h);
888 break;
148954fa
CC		 889 case VNC_ENCODING_ZRLE:
890 n = vnc_zrle_send_framebuffer_update(vs, x, y, w, h);
891 break;
892 case VNC_ENCODING_ZYWRLE:
893 n = vnc_zywrle_send_framebuffer_update(vs, x, y, w, h);
894 break;
28a76be8 895 default:
de3f7de7 896 encode_raw = true;
28a76be8 897 break;
fb437313 898 }
de3f7de7
PL		 899
900 /* If the client has the same pixel format as our internal buffer and
901 * a RAW encoding would need less space fall back to RAW encoding to
902 * save bandwidth and processing power in the client. */
903 if (!encode_raw && vs->write_pixels == vnc_write_pixels_copy &&
904 12 + h * w * VNC_SERVER_FB_BYTES <= (vs->output.offset - saved_offs)) {
905 vs->output.offset = saved_offs;
906 encode_raw = true;
907 }
908
909 if (encode_raw) {
910 vnc_framebuffer_update(vs, x, y, w, h, VNC_ENCODING_RAW);
911 n = vnc_raw_send_framebuffer_update(vs, x, y, w, h);
912 }
913
a885211e 914 return n;
24236869
FB		 915}
916
7c20b4a3 917static void vnc_mouse_set(DisplayChangeListener *dcl,
7c20b4a3 918 int x, int y, int visible)
d467b679
GH		 919{
920 /* can we ask the client(s) to move the pointer ??? */
921}
922
923static int vnc_cursor_define(VncState *vs)
924{
925 QEMUCursor *c = vs->vd->cursor;
d467b679
GH		 926 int isize;
927
928 if (vnc_has_feature(vs, VNC_FEATURE_RICH_CURSOR)) {
d01f9595 929 vnc_lock_output(vs);
d467b679
GH		 930 vnc_write_u8(vs, VNC_MSG_SERVER_FRAMEBUFFER_UPDATE);
931 vnc_write_u8(vs, 0); /* padding */
932 vnc_write_u16(vs, 1); /* # of rects */
933 vnc_framebuffer_update(vs, c->hot_x, c->hot_y, c->width, c->height,
934 VNC_ENCODING_RICH_CURSOR);
9f64916d
GH		 935 isize = c->width * c->height * vs->client_pf.bytes_per_pixel;
936 vnc_write_pixels_generic(vs, c->data, isize);
d467b679 937 vnc_write(vs, vs->vd->cursor_mask, vs->vd->cursor_msize);
d01f9595 938 vnc_unlock_output(vs);
d467b679
GH		 939 return 0;
940 }
941 return -1;
942}
943
7c20b4a3 944static void vnc_dpy_cursor_define(DisplayChangeListener *dcl,
7c20b4a3 945 QEMUCursor *c)
d467b679 946{
d616ccc5 947 VncDisplay *vd = container_of(dcl, VncDisplay, dcl);
d467b679
GH		 948 VncState *vs;
949
950 cursor_put(vd->cursor);
7267c094 951 g_free(vd->cursor_mask);
d467b679
GH		 952
953 vd->cursor = c;
954 cursor_get(vd->cursor);
955 vd->cursor_msize = cursor_get_mono_bpl(c) * c->height;
7267c094 956 vd->cursor_mask = g_malloc0(vd->cursor_msize);
d467b679
GH		 957 cursor_get_mono_mask(c, 0, vd->cursor_mask);
958
959 QTAILQ_FOREACH(vs, &vd->clients, next) {
960 vnc_cursor_define(vs);
961 }
962}
963
4769a881 964static int find_and_clear_dirty_height(VncState *vs,
6c71a539 965 int y, int last_x, int x, int height)
24236869
FB		 966{
967 int h;
968
6c71a539 969 for (h = 1; h < (height - y); h++) {
bc2429b9 970 if (!test_bit(last_x, vs->dirty[y + h])) {
28a76be8 971 break;
bc2429b9 972 }
863d7c91 973 bitmap_clear(vs->dirty[y + h], last_x, x - last_x);
24236869
FB		 974 }
975
976 return h;
977}
978
e2b72cb6
DB		 979/*
980 * Figure out how much pending data we should allow in the output
981 * buffer before we throttle incremental display updates, and/or
982 * drop audio samples.
983 *
984 * We allow for equiv of 1 full display's worth of FB updates,
985 * and 1 second of audio samples. If audio backlog was larger
986 * than that the client would already suffering awful audio
987 * glitches, so dropping samples is no worse really).
988 */
989static void vnc_update_throttle_offset(VncState *vs)
990{
991 size_t offset =
992 vs->client_width * vs->client_height * vs->client_pf.bytes_per_pixel;
993
994 if (vs->audio_cap) {
e2b72cb6 995 int bps;
e2b72cb6
DB		 996 switch (vs->as.fmt) {
997 default:
998 case AUD_FMT_U8:
999 case AUD_FMT_S8:
1000 bps = 1;
1001 break;
1002 case AUD_FMT_U16:
1003 case AUD_FMT_S16:
1004 bps = 2;
1005 break;
1006 case AUD_FMT_U32:
1007 case AUD_FMT_S32:
1008 bps = 4;
1009 break;
1010 }
cf070658 1011 offset += vs->as.freq * bps * vs->as.nchannels;
e2b72cb6
DB		 1012 }
1013
1014 /* Put a floor of 1MB on offset, so that if we have a large pending
1015 * buffer and the display is resized to a small size & back again
1016 * we don't suddenly apply a tiny send limit
1017 */
1018 offset = MAX(offset, 1024 * 1024);
1019
6aa22a29
DB		 1020 if (vs->throttle_output_offset != offset) {
1021 trace_vnc_client_throttle_threshold(
1022 vs, vs->ioc, vs->throttle_output_offset, offset, vs->client_width,
1023 vs->client_height, vs->client_pf.bytes_per_pixel, vs->audio_cap);
1024 }
1025
e2b72cb6
DB		 1026 vs->throttle_output_offset = offset;
1027}
1028
0bad8342
DB		 1029static bool vnc_should_update(VncState *vs)
1030{
1031 switch (vs->update) {
1032 case VNC_STATE_UPDATE_NONE:
1033 break;
1034 case VNC_STATE_UPDATE_INCREMENTAL:
e2b72cb6 1035 /* Only allow incremental updates if the pending send queue
ada8d2e4
DB		 1036 * is less than the permitted threshold, and the job worker
1037 * is completely idle.
0bad8342 1038 */
ada8d2e4
DB		 1039 if (vs->output.offset < vs->throttle_output_offset &&
1040 vs->job_update == VNC_STATE_UPDATE_NONE) {
0bad8342
DB		 1041 return true;
1042 }
6aa22a29
DB		 1043 trace_vnc_client_throttle_incremental(
1044 vs, vs->ioc, vs->job_update, vs->output.offset);
0bad8342
DB		 1045 break;
1046 case VNC_STATE_UPDATE_FORCE:
ada8d2e4
DB		 1047 /* Only allow forced updates if the pending send queue
1048 * does not contain a previous forced update, and the
1049 * job worker is completely idle.
1050 *
1051 * Note this means we'll queue a forced update, even if
1052 * the output buffer size is otherwise over the throttle
1053 * output limit.
1054 */
1055 if (vs->force_update_offset == 0 &&
1056 vs->job_update == VNC_STATE_UPDATE_NONE) {
1057 return true;
1058 }
6aa22a29
DB		 1059 trace_vnc_client_throttle_forced(
1060 vs, vs->ioc, vs->job_update, vs->force_update_offset);
ada8d2e4 1061 break;
0bad8342
DB		 1062 }
1063 return false;
1064}
1065
6af998db 1066static int vnc_update_client(VncState *vs, int has_dirty)
24236869 1067{
b939eb89
DB		 1068 VncDisplay *vd = vs->vd;
1069 VncJob *job;
1070 int y;
1071 int height, width;
1072 int n = 0;
1073
5a8be0f7
GH		 1074 if (vs->disconnecting) {
1075 vnc_disconnect_finish(vs);
1076 return 0;
1077 }
1078
63658280 1079 vs->has_dirty += has_dirty;
0bad8342 1080 if (!vnc_should_update(vs)) {
b939eb89
DB		 1081 return 0;
1082 }
1083
fef1bbad 1084 if (!vs->has_dirty && vs->update != VNC_STATE_UPDATE_FORCE) {
b939eb89
DB		 1085 return 0;
1086 }
1087
1088 /*
1089 * Send screen updates to the vnc client using the server
1090 * surface and server dirty map. guest surface updates
1091 * happening in parallel don't disturb us, the next pass will
1092 * send them to the client.
1093 */
1094 job = vnc_job_new(vs);
1095
1096 height = pixman_image_get_height(vd->server);
1097 width = pixman_image_get_width(vd->server);
1098
1099 y = 0;
1100 for (;;) {
1101 int x, h;
1102 unsigned long x2;
1103 unsigned long offset = find_next_bit((unsigned long *) &vs->dirty,
1104 height * VNC_DIRTY_BPL(vs),
1105 y * VNC_DIRTY_BPL(vs));
1106 if (offset == height * VNC_DIRTY_BPL(vs)) {
1107 /* no more dirty bits */
1108 break;
1109 }
1110 y = offset / VNC_DIRTY_BPL(vs);
1111 x = offset % VNC_DIRTY_BPL(vs);
1112 x2 = find_next_zero_bit((unsigned long *) &vs->dirty[y],
1113 VNC_DIRTY_BPL(vs), x);
1114 bitmap_clear(vs->dirty[y], x, x2 - x);
1115 h = find_and_clear_dirty_height(vs, y, x, x2, height);
1116 x2 = MIN(x2, width / VNC_DIRTY_PIXELS_PER_BIT);
1117 if (x2 > x) {
1118 n += vnc_job_add_rect(job, x * VNC_DIRTY_PIXELS_PER_BIT, y,
1119 (x2 - x) * VNC_DIRTY_PIXELS_PER_BIT, h);
1120 }
1121 if (!x && x2 == width / VNC_DIRTY_PIXELS_PER_BIT) {
1122 y += h;
1123 if (y == height) {
12b316d4 1124 break;
28a76be8
AL		 1125 }
1126 }
24236869 1127 }
24236869 1128
ada8d2e4 1129 vs->job_update = vs->update;
728a7ac9 1130 vs->update = VNC_STATE_UPDATE_NONE;
ada8d2e4 1131 vnc_job_push(job);
b939eb89
DB		 1132 vs->has_dirty = 0;
1133 return n;
24236869
FB		 1134}
1135
429a8ed3 1136/* audio */
1137static void audio_capture_notify(void *opaque, audcnotification_e cmd)
1138{
1139 VncState *vs = opaque;
1140
1141 switch (cmd) {
1142 case AUD_CNOTIFY_DISABLE:
bd023f95 1143 vnc_lock_output(vs);
46a183da
DB		 1144 vnc_write_u8(vs, VNC_MSG_SERVER_QEMU);
1145 vnc_write_u8(vs, VNC_MSG_SERVER_QEMU_AUDIO);
1146 vnc_write_u16(vs, VNC_MSG_SERVER_QEMU_AUDIO_END);
bd023f95 1147 vnc_unlock_output(vs);
429a8ed3 1148 vnc_flush(vs);
1149 break;
1150
1151 case AUD_CNOTIFY_ENABLE:
bd023f95 1152 vnc_lock_output(vs);
46a183da
DB		 1153 vnc_write_u8(vs, VNC_MSG_SERVER_QEMU);
1154 vnc_write_u8(vs, VNC_MSG_SERVER_QEMU_AUDIO);
1155 vnc_write_u16(vs, VNC_MSG_SERVER_QEMU_AUDIO_BEGIN);
bd023f95 1156 vnc_unlock_output(vs);
429a8ed3 1157 vnc_flush(vs);
1158 break;
1159 }
1160}
1161
1162static void audio_capture_destroy(void *opaque)
1163{
1164}
1165
1166static void audio_capture(void *opaque, void *buf, int size)
1167{
1168 VncState *vs = opaque;
1169
bd023f95 1170 vnc_lock_output(vs);
e2b72cb6
DB		 1171 if (vs->output.offset < vs->throttle_output_offset) {
1172 vnc_write_u8(vs, VNC_MSG_SERVER_QEMU);
1173 vnc_write_u8(vs, VNC_MSG_SERVER_QEMU_AUDIO);
1174 vnc_write_u16(vs, VNC_MSG_SERVER_QEMU_AUDIO_DATA);
1175 vnc_write_u32(vs, size);
1176 vnc_write(vs, buf, size);
6aa22a29
DB		 1177 } else {
1178 trace_vnc_client_throttle_audio(vs, vs->ioc, vs->output.offset);
e2b72cb6 1179 }
bd023f95 1180 vnc_unlock_output(vs);
429a8ed3 1181 vnc_flush(vs);
1182}
1183
1184static void audio_add(VncState *vs)
1185{
1186 struct audio_capture_ops ops;
1187
1188 if (vs->audio_cap) {
027a79c3 1189 error_report("audio already running");
429a8ed3 1190 return;
1191 }
1192
1193 ops.notify = audio_capture_notify;
1194 ops.destroy = audio_capture_destroy;
1195 ops.capture = audio_capture;
1196
1a7dafce 1197 vs->audio_cap = AUD_add_capture(&vs->as, &ops, vs);
429a8ed3 1198 if (!vs->audio_cap) {
027a79c3 1199 error_report("Failed to add audio capture");
429a8ed3 1200 }
1201}
1202
1203static void audio_del(VncState *vs)
1204{
1205 if (vs->audio_cap) {
1206 AUD_del_capture(vs->audio_cap, vs);
1207 vs->audio_cap = NULL;
1208 }
1209}
1210
198a0039
GH		 1211static void vnc_disconnect_start(VncState *vs)
1212{
04d2529d 1213 if (vs->disconnecting) {
198a0039 1214 return;
04d2529d 1215 }
ad6374c4 1216 trace_vnc_client_disconnect_start(vs, vs->ioc);
8cf36489 1217 vnc_set_share_mode(vs, VNC_SHARE_MODE_DISCONNECTED);
04d2529d
DB		 1218 if (vs->ioc_tag) {
1219 g_source_remove(vs->ioc_tag);
a75d6f07 1220 vs->ioc_tag = 0;
04d2529d
DB		 1221 }
1222 qio_channel_close(vs->ioc, NULL);
1223 vs->disconnecting = TRUE;
198a0039
GH		 1224}
1225
7536ee4b 1226void vnc_disconnect_finish(VncState *vs)
198a0039 1227{
7d964c9d
CC		 1228 int i;
1229
ad6374c4
DB		 1230 trace_vnc_client_disconnect_finish(vs, vs->ioc);
1231
bd023f95
CC		 1232 vnc_jobs_join(vs); /* Wait encoding jobs */
1233
1234 vnc_lock_output(vs);
fb6ba0d5 1235 vnc_qmp_event(vs, QAPI_EVENT_VNC_DISCONNECTED);
0d72f3d3 1236
5d418e3b
CC		 1237 buffer_free(&vs->input);
1238 buffer_free(&vs->output);
4a80dba3 1239
fb6ba0d5 1240 qapi_free_VncClientInfo(vs->info);
4a80dba3 1241
161c4f20 1242 vnc_zlib_clear(vs);
380282b0 1243 vnc_tight_clear(vs);
148954fa 1244 vnc_zrle_clear(vs);
161c4f20 1245
198a0039
GH		 1246#ifdef CONFIG_VNC_SASL
1247 vnc_sasl_client_cleanup(vs);
1248#endif /* CONFIG_VNC_SASL */
1249 audio_del(vs);
7bc9318b 1250 vnc_release_modifiers(vs);
198a0039 1251
90cd03a3 1252 if (vs->mouse_mode_notifier.notify != NULL) {
6fd8e79a 1253 qemu_remove_mouse_mode_change_notifier(&vs->mouse_mode_notifier);
90cd03a3
DB		 1254 }
1255 QTAILQ_REMOVE(&vs->vd->clients, vs, next);
1256 if (QTAILQ_EMPTY(&vs->vd->clients)) {
1257 /* last client gone */
1258 vnc_update_server_surface(vs->vd);
6fd8e79a 1259 }
41b4bef6 1260
bd023f95
CC		 1261 vnc_unlock_output(vs);
1262
bd023f95 1263 qemu_mutex_destroy(&vs->output_mutex);
6fd8e79a
TH		 1264 if (vs->bh != NULL) {
1265 qemu_bh_delete(vs->bh);
1266 }
175b2a6e 1267 buffer_free(&vs->jobs_buffer);
175b2a6e 1268
7d964c9d 1269 for (i = 0; i < VNC_STAT_ROWS; ++i) {
7267c094 1270 g_free(vs->lossy_rect[i]);
7d964c9d 1271 }
7267c094 1272 g_free(vs->lossy_rect);
04d2529d
DB		 1273
1274 object_unref(OBJECT(vs->ioc));
1275 vs->ioc = NULL;
1276 object_unref(OBJECT(vs->sioc));
1277 vs->sioc = NULL;
7267c094 1278 g_free(vs);
198a0039 1279}
2f9606b3 1280
30b80fd5 1281size_t vnc_client_io_error(VncState *vs, ssize_t ret, Error **errp)
24236869 1282{
04d2529d
DB		 1283 if (ret <= 0) {
1284 if (ret == 0) {
ad6374c4 1285 trace_vnc_client_eof(vs, vs->ioc);
537848ee 1286 vnc_disconnect_start(vs);
04d2529d 1287 } else if (ret != QIO_CHANNEL_ERR_BLOCK) {
ad6374c4
DB		 1288 trace_vnc_client_io_error(vs, vs->ioc,
1289 errp ? error_get_pretty(*errp) :
1290 "Unknown");
537848ee 1291 vnc_disconnect_start(vs);
ea01e5fd 1292 }
24236869 1293
04d2529d
DB		 1294 if (errp) {
1295 error_free(*errp);
1296 *errp = NULL;
1297 }
28a76be8 1298 return 0;
24236869
FB		 1299 }
1300 return ret;
1301}
1302
5fb6c7a8
AL		 1303
1304void vnc_client_error(VncState *vs)
24236869 1305{
198a0039
GH		 1306 VNC_DEBUG("Closing down client sock: protocol error\n");
1307 vnc_disconnect_start(vs);
24236869
FB		 1308}
1309
3e305e4a 1310
2f9606b3
AL		 1311/*
1312 * Called to write a chunk of data to the client socket. The data may
1313 * be the raw data, or may have already been encoded by SASL.
1314 * The data will be written either straight onto the socket, or
1315 * written via the GNUTLS wrappers, if TLS/SSL encryption is enabled
1316 *
1317 * NB, it is theoretically possible to have 2 layers of encryption,
1318 * both SASL, and this TLS layer. It is highly unlikely in practice
1319 * though, since SASL encryption will typically be a no-op if TLS
1320 * is active
1321 *
1322 * Returns the number of bytes written, which may be less than
1323 * the requested 'datalen' if the socket would block. Returns
30b80fd5 1324 * 0 on I/O error, and disconnects the client socket.
2f9606b3 1325 */
30b80fd5 1326size_t vnc_client_write_buf(VncState *vs, const uint8_t *data, size_t datalen)
24236869 1327{
04d2529d 1328 Error *err = NULL;
fdd1ab6a 1329 ssize_t ret;
2cc45228
DB		 1330 ret = qio_channel_write(
1331 vs->ioc, (const char *)data, datalen, &err);
23decc87 1332 VNC_DEBUG("Wrote wire %p %zd -> %ld\n", data, datalen, ret);
04d2529d 1333 return vnc_client_io_error(vs, ret, &err);
2f9606b3
AL		 1334}
1335
1336
1337/*
1338 * Called to write buffered data to the client socket, when not
1339 * using any SASL SSF encryption layers. Will write as much data
1340 * as possible without blocking. If all buffered data is written,
1341 * will switch the FD poll() handler back to read monitoring.
1342 *
1343 * Returns the number of bytes written, which may be less than
30b80fd5
DB		 1344 * the buffered output data if the socket would block. Returns
1345 * 0 on I/O error, and disconnects the client socket.
2f9606b3 1346 */
30b80fd5 1347static size_t vnc_client_write_plain(VncState *vs)
2f9606b3 1348{
6aa22a29 1349 size_t offset;
30b80fd5 1350 size_t ret;
2f9606b3
AL		 1351
1352#ifdef CONFIG_VNC_SASL
23decc87 1353 VNC_DEBUG("Write Plain: Pending output %p size %zd offset %zd. Wait SSF %d\n",
2f9606b3
AL		 1354 vs->output.buffer, vs->output.capacity, vs->output.offset,
1355 vs->sasl.waitWriteSSF);
1356
1357 if (vs->sasl.conn &&
1358 vs->sasl.runSSF &&
1359 vs->sasl.waitWriteSSF) {
1360 ret = vnc_client_write_buf(vs, vs->output.buffer, vs->sasl.waitWriteSSF);
1361 if (ret)
1362 vs->sasl.waitWriteSSF -= ret;
1363 } else
1364#endif /* CONFIG_VNC_SASL */
1365 ret = vnc_client_write_buf(vs, vs->output.buffer, vs->output.offset);
24236869 1366 if (!ret)
2f9606b3 1367 return 0;
24236869 1368
ada8d2e4 1369 if (ret >= vs->force_update_offset) {
6aa22a29
DB		 1370 if (vs->force_update_offset != 0) {
1371 trace_vnc_client_unthrottle_forced(vs, vs->ioc);
1372 }
ada8d2e4
DB		 1373 vs->force_update_offset = 0;
1374 } else {
1375 vs->force_update_offset -= ret;
1376 }
6aa22a29 1377 offset = vs->output.offset;
32ed2680 1378 buffer_advance(&vs->output, ret);
6aa22a29
DB		 1379 if (offset >= vs->throttle_output_offset &&
1380 vs->output.offset < vs->throttle_output_offset) {
1381 trace_vnc_client_unthrottle_incremental(vs, vs->ioc, vs->output.offset);
1382 }
24236869
FB		 1383
1384 if (vs->output.offset == 0) {
04d2529d
DB		 1385 if (vs->ioc_tag) {
1386 g_source_remove(vs->ioc_tag);
1387 }
1388 vs->ioc_tag = qio_channel_add_watch(
1389 vs->ioc, G_IO_IN, vnc_client_io, vs, NULL);
24236869 1390 }
2f9606b3
AL		 1391
1392 return ret;
1393}
1394
1395
1396/*
1397 * First function called whenever there is data to be written to
1398 * the client socket. Will delegate actual work according to whether
1399 * SASL SSF layers are enabled (thus requiring encryption calls)
1400 */
04d2529d 1401static void vnc_client_write_locked(VncState *vs)
2f9606b3 1402{
2f9606b3
AL		 1403#ifdef CONFIG_VNC_SASL
1404 if (vs->sasl.conn &&
1405 vs->sasl.runSSF &&
9678d950
BS		 1406 !vs->sasl.waitWriteSSF) {
1407 vnc_client_write_sasl(vs);
1408 } else
2f9606b3 1409#endif /* CONFIG_VNC_SASL */
7536ee4b 1410 {
d5f04223 1411 vnc_client_write_plain(vs);
7536ee4b 1412 }
24236869
FB		 1413}
1414
04d2529d 1415static void vnc_client_write(VncState *vs)
bd023f95 1416{
bd023f95
CC		 1417
1418 vnc_lock_output(vs);
d5f04223 1419 if (vs->output.offset) {
04d2529d
DB		 1420 vnc_client_write_locked(vs);
1421 } else if (vs->ioc != NULL) {
1422 if (vs->ioc_tag) {
1423 g_source_remove(vs->ioc_tag);
1424 }
1425 vs->ioc_tag = qio_channel_add_watch(
1426 vs->ioc, G_IO_IN, vnc_client_io, vs, NULL);
bd023f95
CC		 1427 }
1428 vnc_unlock_output(vs);
1429}
1430
5fb6c7a8 1431void vnc_read_when(VncState *vs, VncReadEvent *func, size_t expecting)
24236869
FB		 1432{
1433 vs->read_handler = func;
1434 vs->read_handler_expect = expecting;
1435}
1436
2f9606b3
AL		 1437
1438/*
1439 * Called to read a chunk of data from the client socket. The data may
1440 * be the raw data, or may need to be further decoded by SASL.
1441 * The data will be read either straight from to the socket, or
1442 * read via the GNUTLS wrappers, if TLS/SSL encryption is enabled
1443 *
1444 * NB, it is theoretically possible to have 2 layers of encryption,
1445 * both SASL, and this TLS layer. It is highly unlikely in practice
1446 * though, since SASL encryption will typically be a no-op if TLS
1447 * is active
1448 *
1449 * Returns the number of bytes read, which may be less than
1450 * the requested 'datalen' if the socket would block. Returns
30b80fd5 1451 * 0 on I/O error or EOF, and disconnects the client socket.
2f9606b3 1452 */
30b80fd5 1453size_t vnc_client_read_buf(VncState *vs, uint8_t *data, size_t datalen)
24236869 1454{
fdd1ab6a 1455 ssize_t ret;
04d2529d 1456 Error *err = NULL;
2cc45228
DB		 1457 ret = qio_channel_read(
1458 vs->ioc, (char *)data, datalen, &err);
23decc87 1459 VNC_DEBUG("Read wire %p %zd -> %ld\n", data, datalen, ret);
04d2529d 1460 return vnc_client_io_error(vs, ret, &err);
2f9606b3 1461}
24236869 1462
2f9606b3
AL		 1463
1464/*
1465 * Called to read data from the client socket to the input buffer,
1466 * when not using any SASL SSF encryption layers. Will read as much
1467 * data as possible without blocking.
1468 *
30b80fd5
DB		 1469 * Returns the number of bytes read, which may be less than
1470 * the requested 'datalen' if the socket would block. Returns
1471 * 0 on I/O error or EOF, and disconnects the client socket.
2f9606b3 1472 */
30b80fd5 1473static size_t vnc_client_read_plain(VncState *vs)
2f9606b3 1474{
30b80fd5 1475 size_t ret;
23decc87 1476 VNC_DEBUG("Read plain %p size %zd offset %zd\n",
2f9606b3
AL		 1477 vs->input.buffer, vs->input.capacity, vs->input.offset);
1478 buffer_reserve(&vs->input, 4096);
1479 ret = vnc_client_read_buf(vs, buffer_end(&vs->input), 4096);
1480 if (!ret)
1481 return 0;
24236869 1482 vs->input.offset += ret;
2f9606b3
AL		 1483 return ret;
1484}
1485
175b2a6e
CC		 1486static void vnc_jobs_bh(void *opaque)
1487{
1488 VncState *vs = opaque;
1489
1490 vnc_jobs_consume_buffer(vs);
1491}
2f9606b3
AL		 1492
1493/*
1494 * First function called whenever there is more data to be read from
1495 * the client socket. Will delegate actual work according to whether
1496 * SASL SSF layers are enabled (thus requiring decryption calls)
ea697449 1497 * Returns 0 on success, -1 if client disconnected
2f9606b3 1498 */
ea697449 1499static int vnc_client_read(VncState *vs)
2f9606b3 1500{
30b80fd5 1501 size_t ret;
2f9606b3
AL		 1502
1503#ifdef CONFIG_VNC_SASL
1504 if (vs->sasl.conn && vs->sasl.runSSF)
1505 ret = vnc_client_read_sasl(vs);
1506 else
1507#endif /* CONFIG_VNC_SASL */
d5f04223 1508 ret = vnc_client_read_plain(vs);
198a0039 1509 if (!ret) {
04d2529d 1510 if (vs->disconnecting) {
198a0039 1511 vnc_disconnect_finish(vs);
ea697449 1512 return -1;
04d2529d 1513 }
ea697449 1514 return 0;
198a0039 1515 }
24236869
FB		 1516
1517 while (vs->read_handler && vs->input.offset >= vs->read_handler_expect) {
28a76be8
AL		 1518 size_t len = vs->read_handler_expect;
1519 int ret;
1520
1521 ret = vs->read_handler(vs, vs->input.buffer, len);
04d2529d 1522 if (vs->disconnecting) {
198a0039 1523 vnc_disconnect_finish(vs);
ea697449 1524 return -1;
198a0039 1525 }
28a76be8
AL		 1526
1527 if (!ret) {
32ed2680 1528 buffer_advance(&vs->input, len);
28a76be8
AL		 1529 } else {
1530 vs->read_handler_expect = ret;
1531 }
24236869 1532 }
ea697449 1533 return 0;
24236869
FB		 1534}
1535
04d2529d
DB		 1536gboolean vnc_client_io(QIOChannel *ioc G_GNUC_UNUSED,
1537 GIOCondition condition, void *opaque)
1538{
1539 VncState *vs = opaque;
1540 if (condition & G_IO_IN) {
ea697449 1541 if (vnc_client_read(vs) < 0) {
d49b87f0 1542 goto end;
ea697449 1543 }
04d2529d
DB		 1544 }
1545 if (condition & G_IO_OUT) {
1546 vnc_client_write(vs);
1547 }
d49b87f0
KK		 1548end:
1549 if (vs->disconnecting) {
1550 if (vs->ioc_tag != 0) {
1551 g_source_remove(vs->ioc_tag);
1552 }
1553 vs->ioc_tag = 0;
1554 }
04d2529d
DB		 1555 return TRUE;
1556}
1557
1558
f887cf16
DB		 1559/*
1560 * Scale factor to apply to vs->throttle_output_offset when checking for
1561 * hard limit. Worst case normal usage could be x2, if we have a complete
1562 * incremental update and complete forced update in the output buffer.
1563 * So x3 should be good enough, but we pick x5 to be conservative and thus
1564 * (hopefully) never trigger incorrectly.
1565 */
1566#define VNC_THROTTLE_OUTPUT_LIMIT_SCALE 5
1567
5fb6c7a8 1568void vnc_write(VncState *vs, const void *data, size_t len)
24236869 1569{
f887cf16
DB		 1570 if (vs->disconnecting) {
1571 return;
1572 }
1573 /* Protection against malicious client/guest to prevent our output
1574 * buffer growing without bound if client stops reading data. This
1575 * should rarely trigger, because we have earlier throttling code
1576 * which stops issuing framebuffer updates and drops audio data
1577 * if the throttle_output_offset value is exceeded. So we only reach
1578 * this higher level if a huge number of pseudo-encodings get
1579 * triggered while data can't be sent on the socket.
1580 *
1581 * NB throttle_output_offset can be zero during early protocol
1582 * handshake, or from the job thread's VncState clone
1583 */
1584 if (vs->throttle_output_offset != 0 &&
dffa1de0
DB		 1585 (vs->output.offset / VNC_THROTTLE_OUTPUT_LIMIT_SCALE) >
1586 vs->throttle_output_offset) {
6aa22a29
DB		 1587 trace_vnc_client_output_limit(vs, vs->ioc, vs->output.offset,
1588 vs->throttle_output_offset);
f887cf16
DB		 1589 vnc_disconnect_start(vs);
1590 return;
1591 }
24236869
FB		 1592 buffer_reserve(&vs->output, len);
1593
04d2529d
DB		 1594 if (vs->ioc != NULL && buffer_empty(&vs->output)) {
1595 if (vs->ioc_tag) {
1596 g_source_remove(vs->ioc_tag);
1597 }
1598 vs->ioc_tag = qio_channel_add_watch(
1599 vs->ioc, G_IO_IN | G_IO_OUT, vnc_client_io, vs, NULL);
24236869
FB		 1600 }
1601
1602 buffer_append(&vs->output, data, len);
1603}
1604
5fb6c7a8 1605void vnc_write_s32(VncState *vs, int32_t value)
24236869
FB		 1606{
1607 vnc_write_u32(vs, *(uint32_t *)&value);
1608}
1609
5fb6c7a8 1610void vnc_write_u32(VncState *vs, uint32_t value)
24236869
FB		 1611{
1612 uint8_t buf[4];
1613
1614 buf[0] = (value >> 24) & 0xFF;
1615 buf[1] = (value >> 16) & 0xFF;
1616 buf[2] = (value >> 8) & 0xFF;
1617 buf[3] = value & 0xFF;
1618
1619 vnc_write(vs, buf, 4);
1620}
1621
5fb6c7a8 1622void vnc_write_u16(VncState *vs, uint16_t value)
24236869 1623{
64f5a135 1624 uint8_t buf[2];
24236869
FB		 1625
1626 buf[0] = (value >> 8) & 0xFF;
1627 buf[1] = value & 0xFF;
1628
1629 vnc_write(vs, buf, 2);
1630}
1631
5fb6c7a8 1632void vnc_write_u8(VncState *vs, uint8_t value)
24236869
FB		 1633{
1634 vnc_write(vs, (char *)&value, 1);
1635}
1636
5fb6c7a8 1637void vnc_flush(VncState *vs)
24236869 1638{
bd023f95 1639 vnc_lock_output(vs);
d5f04223 1640 if (vs->ioc != NULL && vs->output.offset) {
bd023f95
CC		 1641 vnc_client_write_locked(vs);
1642 }
d49b87f0
KK		 1643 if (vs->disconnecting) {
1644 if (vs->ioc_tag != 0) {
1645 g_source_remove(vs->ioc_tag);
1646 }
1647 vs->ioc_tag = 0;
1648 }
bd023f95 1649 vnc_unlock_output(vs);
24236869
FB		 1650}
1651
71a8cdec 1652static uint8_t read_u8(uint8_t *data, size_t offset)
24236869
FB		 1653{
1654 return data[offset];
1655}
1656
71a8cdec 1657static uint16_t read_u16(uint8_t *data, size_t offset)
24236869
FB		 1658{
1659 return ((data[offset] & 0xFF) << 8) | (data[offset + 1] & 0xFF);
1660}
1661
71a8cdec 1662static int32_t read_s32(uint8_t *data, size_t offset)
24236869
FB		 1663{
1664 return (int32_t)((data[offset] << 24) | (data[offset + 1] << 16) |
28a76be8 1665 (data[offset + 2] << 8) | data[offset + 3]);
24236869
FB		 1666}
1667
5fb6c7a8 1668uint32_t read_u32(uint8_t *data, size_t offset)
24236869
FB		 1669{
1670 return ((data[offset] << 24) | (data[offset + 1] << 16) |
28a76be8 1671 (data[offset + 2] << 8) | data[offset + 3]);
24236869
FB		 1672}
1673
60fe76f3 1674static void client_cut_text(VncState *vs, size_t len, uint8_t *text)
24236869
FB		 1675{
1676}
1677
9e8dd451 1678static void check_pointer_type_change(Notifier *notifier, void *data)
564c337e 1679{
37c34d9d 1680 VncState *vs = container_of(notifier, VncState, mouse_mode_notifier);
14768eba 1681 int absolute = qemu_input_is_absolute();
37c34d9d 1682
29fa4ed9 1683 if (vnc_has_feature(vs, VNC_FEATURE_POINTER_TYPE_CHANGE) && vs->absolute != absolute) {
bd023f95 1684 vnc_lock_output(vs);
46a183da 1685 vnc_write_u8(vs, VNC_MSG_SERVER_FRAMEBUFFER_UPDATE);
28a76be8
AL		 1686 vnc_write_u8(vs, 0);
1687 vnc_write_u16(vs, 1);
1688 vnc_framebuffer_update(vs, absolute, 0,
bea60dd7
PL		 1689 pixman_image_get_width(vs->vd->server),
1690 pixman_image_get_height(vs->vd->server),
29fa4ed9 1691 VNC_ENCODING_POINTER_TYPE_CHANGE);
bd023f95 1692 vnc_unlock_output(vs);
28a76be8 1693 vnc_flush(vs);
564c337e
FB		 1694 }
1695 vs->absolute = absolute;
1696}
1697
24236869
FB		 1698static void pointer_event(VncState *vs, int button_mask, int x, int y)
1699{
7fb1cf16 1700 static uint32_t bmap[INPUT_BUTTON__MAX] = {
14768eba
GH		 1701 [INPUT_BUTTON_LEFT] = 0x01,
1702 [INPUT_BUTTON_MIDDLE] = 0x02,
1703 [INPUT_BUTTON_RIGHT] = 0x04,
f22d0af0
GH		 1704 [INPUT_BUTTON_WHEEL_UP] = 0x08,
1705 [INPUT_BUTTON_WHEEL_DOWN] = 0x10,
14768eba
GH		 1706 };
1707 QemuConsole *con = vs->vd->dcl.con;
bea60dd7
PL		 1708 int width = pixman_image_get_width(vs->vd->server);
1709 int height = pixman_image_get_height(vs->vd->server);
24236869 1710
14768eba
GH		 1711 if (vs->last_bmask != button_mask) {
1712 qemu_input_update_buttons(con, bmap, vs->last_bmask, button_mask);
1713 vs->last_bmask = button_mask;
1714 }
564c337e
FB		 1715
1716 if (vs->absolute) {
9cfa7ab9
PV		 1717 qemu_input_queue_abs(con, INPUT_AXIS_X, x, 0, width);
1718 qemu_input_queue_abs(con, INPUT_AXIS_Y, y, 0, height);
29fa4ed9 1719 } else if (vnc_has_feature(vs, VNC_FEATURE_POINTER_TYPE_CHANGE)) {
14768eba
GH		 1720 qemu_input_queue_rel(con, INPUT_AXIS_X, x - 0x7FFF);
1721 qemu_input_queue_rel(con, INPUT_AXIS_Y, y - 0x7FFF);
564c337e 1722 } else {
14768eba
GH		 1723 if (vs->last_x != -1) {
1724 qemu_input_queue_rel(con, INPUT_AXIS_X, x - vs->last_x);
1725 qemu_input_queue_rel(con, INPUT_AXIS_Y, y - vs->last_y);
1726 }
28a76be8
AL		 1727 vs->last_x = x;
1728 vs->last_y = y;
24236869 1729 }
14768eba 1730 qemu_input_event_sync();
24236869
FB		 1731}
1732
64f5a135
FB		 1733static void reset_keys(VncState *vs)
1734{
1735 int i;
1736 for(i = 0; i < 256; i++) {
1737 if (vs->modifiers_state[i]) {
8d447d10 1738 qemu_input_event_send_key_number(vs->vd->dcl.con, i, false);
c5ce8333 1739 qemu_input_event_send_key_delay(vs->vd->key_delay_ms);
64f5a135
FB		 1740 vs->modifiers_state[i] = 0;
1741 }
1742 }
1743}
1744
a528b80c
AZ		 1745static void press_key(VncState *vs, int keysym)
1746{
abb4f2c9
GH		 1747 int keycode = keysym2scancode(vs->vd->kbd_layout, keysym,
1748 false, false, false) & SCANCODE_KEYMASK;
8d447d10 1749 qemu_input_event_send_key_number(vs->vd->dcl.con, keycode, true);
c5ce8333 1750 qemu_input_event_send_key_delay(vs->vd->key_delay_ms);
8d447d10 1751 qemu_input_event_send_key_number(vs->vd->dcl.con, keycode, false);
c5ce8333 1752 qemu_input_event_send_key_delay(vs->vd->key_delay_ms);
a528b80c
AZ		 1753}
1754
ab99e5c1
LL		 1755static void vnc_led_state_change(VncState *vs)
1756{
ab99e5c1
LL		 1757 if (!vnc_has_feature(vs, VNC_FEATURE_LED_STATE)) {
1758 return;
1759 }
1760
ab99e5c1
LL		 1761 vnc_lock_output(vs);
1762 vnc_write_u8(vs, VNC_MSG_SERVER_FRAMEBUFFER_UPDATE);
1763 vnc_write_u8(vs, 0);
1764 vnc_write_u16(vs, 1);
1765 vnc_framebuffer_update(vs, 0, 0, 1, 1, VNC_ENCODING_LED_STATE);
a54f0d2b 1766 vnc_write_u8(vs, vs->vd->ledstate);
ab99e5c1
LL		 1767 vnc_unlock_output(vs);
1768 vnc_flush(vs);
1769}
1770
7ffb82ca
GH		 1771static void kbd_leds(void *opaque, int ledstate)
1772{
a54f0d2b
PO		 1773 VncDisplay *vd = opaque;
1774 VncState *client;
7ffb82ca 1775
40066175
GH		 1776 trace_vnc_key_guest_leds((ledstate & QEMU_CAPS_LOCK_LED),
1777 (ledstate & QEMU_NUM_LOCK_LED),
1778 (ledstate & QEMU_SCROLL_LOCK_LED));
1779
a54f0d2b
PO		 1780 if (ledstate == vd->ledstate) {
1781 return;
96f3d174 1782 }
ab99e5c1 1783
a54f0d2b
PO		 1784 vd->ledstate = ledstate;
1785
1786 QTAILQ_FOREACH(client, &vd->clients, next) {
1787 vnc_led_state_change(client);
ab99e5c1 1788 }
7ffb82ca
GH		 1789}
1790
9ca313aa 1791static void do_key_event(VncState *vs, int down, int keycode, int sym)
24236869 1792{
64f5a135
FB		 1793 /* QEMU console switch */
1794 switch(keycode) {
1795 case 0x2a: /* Left Shift */
1796 case 0x36: /* Right Shift */
1797 case 0x1d: /* Left CTRL */
1798 case 0x9d: /* Right CTRL */
1799 case 0x38: /* Left ALT */
1800 case 0xb8: /* Right ALT */
1801 if (down)
1802 vs->modifiers_state[keycode] = 1;
1803 else
1804 vs->modifiers_state[keycode] = 0;
1805 break;
5fafdf24 1806 case 0x02 ... 0x0a: /* '1' to '9' keys */
1d0d59fe
GH		 1807 if (vs->vd->dcl.con == NULL &&
1808 down && vs->modifiers_state[0x1d] && vs->modifiers_state[0x38]) {
64f5a135
FB		 1809 /* Reset the modifiers sent to the current console */
1810 reset_keys(vs);
1811 console_select(keycode - 0x02);
1812 return;
1813 }
1814 break;
28a76be8
AL		 1815 case 0x3a: /* CapsLock */
1816 case 0x45: /* NumLock */
7ffb82ca 1817 if (down)
a528b80c
AZ		 1818 vs->modifiers_state[keycode] ^= 1;
1819 break;
1820 }
1821
e7b2aacc
LL		 1822 /* Turn off the lock state sync logic if the client support the led
1823 state extension.
1824 */
9892088b 1825 if (down && vs->vd->lock_key_sync &&
e7b2aacc 1826 !vnc_has_feature(vs, VNC_FEATURE_LED_STATE) &&
3a0558b5 1827 keycode_is_keypad(vs->vd->kbd_layout, keycode)) {
a528b80c
AZ		 1828 /* If the numlock state needs to change then simulate an additional
1829 keypress before sending this one. This will happen if the user
1830 toggles numlock away from the VNC window.
1831 */
753b4053 1832 if (keysym_is_numlock(vs->vd->kbd_layout, sym & 0xFFFF)) {
a528b80c 1833 if (!vs->modifiers_state[0x45]) {
40066175 1834 trace_vnc_key_sync_numlock(true);
a528b80c
AZ		 1835 vs->modifiers_state[0x45] = 1;
1836 press_key(vs, 0xff7f);
1837 }
1838 } else {
1839 if (vs->modifiers_state[0x45]) {
40066175 1840 trace_vnc_key_sync_numlock(false);
a528b80c
AZ		 1841 vs->modifiers_state[0x45] = 0;
1842 press_key(vs, 0xff7f);
1843 }
1844 }
64f5a135 1845 }
24236869 1846
9892088b 1847 if (down && vs->vd->lock_key_sync &&
e7b2aacc 1848 !vnc_has_feature(vs, VNC_FEATURE_LED_STATE) &&
3a0558b5 1849 ((sym >= 'A' && sym <= 'Z') || (sym >= 'a' && sym <= 'z'))) {
6b132502
GH		 1850 /* If the capslock state needs to change then simulate an additional
1851 keypress before sending this one. This will happen if the user
1852 toggles capslock away from the VNC window.
1853 */
1854 int uppercase = !!(sym >= 'A' && sym <= 'Z');
1855 int shift = !!(vs->modifiers_state[0x2a] | vs->modifiers_state[0x36]);
1856 int capslock = !!(vs->modifiers_state[0x3a]);
1857 if (capslock) {
1858 if (uppercase == shift) {
40066175 1859 trace_vnc_key_sync_capslock(false);
6b132502
GH		 1860 vs->modifiers_state[0x3a] = 0;
1861 press_key(vs, 0xffe5);
1862 }
1863 } else {
1864 if (uppercase != shift) {
40066175 1865 trace_vnc_key_sync_capslock(true);
6b132502
GH		 1866 vs->modifiers_state[0x3a] = 1;
1867 press_key(vs, 0xffe5);
1868 }
1869 }
1870 }
1871
81c0d5a6 1872 if (qemu_console_is_graphic(NULL)) {
8d447d10 1873 qemu_input_event_send_key_number(vs->vd->dcl.con, keycode, down);
c5ce8333 1874 qemu_input_event_send_key_delay(vs->vd->key_delay_ms);
64f5a135 1875 } else {
e26437c2
GH		 1876 bool numlock = vs->modifiers_state[0x45];
1877 bool control = (vs->modifiers_state[0x1d] ||
1878 vs->modifiers_state[0x9d]);
64f5a135
FB		 1879 /* QEMU console emulation */
1880 if (down) {
1881 switch (keycode) {
1882 case 0x2a: /* Left Shift */
1883 case 0x36: /* Right Shift */
1884 case 0x1d: /* Left CTRL */
1885 case 0x9d: /* Right CTRL */
1886 case 0x38: /* Left ALT */
1887 case 0xb8: /* Right ALT */
1888 break;
1889 case 0xc8:
1890 kbd_put_keysym(QEMU_KEY_UP);
1891 break;
1892 case 0xd0:
1893 kbd_put_keysym(QEMU_KEY_DOWN);
1894 break;
1895 case 0xcb:
1896 kbd_put_keysym(QEMU_KEY_LEFT);
1897 break;
1898 case 0xcd:
1899 kbd_put_keysym(QEMU_KEY_RIGHT);
1900 break;
1901 case 0xd3:
1902 kbd_put_keysym(QEMU_KEY_DELETE);
1903 break;
1904 case 0xc7:
1905 kbd_put_keysym(QEMU_KEY_HOME);
1906 break;
1907 case 0xcf:
1908 kbd_put_keysym(QEMU_KEY_END);
1909 break;
1910 case 0xc9:
1911 kbd_put_keysym(QEMU_KEY_PAGEUP);
1912 break;
1913 case 0xd1:
1914 kbd_put_keysym(QEMU_KEY_PAGEDOWN);
1915 break;
bb0a18e1
GH		 1916
1917 case 0x47:
1918 kbd_put_keysym(numlock ? '7' : QEMU_KEY_HOME);
1919 break;
1920 case 0x48:
1921 kbd_put_keysym(numlock ? '8' : QEMU_KEY_UP);
1922 break;
1923 case 0x49:
1924 kbd_put_keysym(numlock ? '9' : QEMU_KEY_PAGEUP);
1925 break;
1926 case 0x4b:
1927 kbd_put_keysym(numlock ? '4' : QEMU_KEY_LEFT);
1928 break;
1929 case 0x4c:
1930 kbd_put_keysym('5');
1931 break;
1932 case 0x4d:
1933 kbd_put_keysym(numlock ? '6' : QEMU_KEY_RIGHT);
1934 break;
1935 case 0x4f:
1936 kbd_put_keysym(numlock ? '1' : QEMU_KEY_END);
1937 break;
1938 case 0x50:
1939 kbd_put_keysym(numlock ? '2' : QEMU_KEY_DOWN);
1940 break;
1941 case 0x51:
1942 kbd_put_keysym(numlock ? '3' : QEMU_KEY_PAGEDOWN);
1943 break;
1944 case 0x52:
1945 kbd_put_keysym('0');
1946 break;
1947 case 0x53:
1948 kbd_put_keysym(numlock ? '.' : QEMU_KEY_DELETE);
1949 break;
1950
1951 case 0xb5:
1952 kbd_put_keysym('/');
1953 break;
1954 case 0x37:
1955 kbd_put_keysym('*');
1956 break;
1957 case 0x4a:
1958 kbd_put_keysym('-');
1959 break;
1960 case 0x4e:
1961 kbd_put_keysym('+');
1962 break;
1963 case 0x9c:
1964 kbd_put_keysym('\n');
1965 break;
1966
64f5a135 1967 default:
e26437c2
GH		 1968 if (control) {
1969 kbd_put_keysym(sym & 0x1f);
1970 } else {
1971 kbd_put_keysym(sym);
1972 }
64f5a135
FB		 1973 break;
1974 }
1975 }
1976 }
24236869
FB		 1977}
1978
7bc9318b
GH		 1979static void vnc_release_modifiers(VncState *vs)
1980{
1981 static const int keycodes[] = {
1982 /* shift, control, alt keys, both left & right */
1983 0x2a, 0x36, 0x1d, 0x9d, 0x38, 0xb8,
1984 };
1985 int i, keycode;
1986
81c0d5a6 1987 if (!qemu_console_is_graphic(NULL)) {
7bc9318b
GH		 1988 return;
1989 }
1990 for (i = 0; i < ARRAY_SIZE(keycodes); i++) {
1991 keycode = keycodes[i];
1992 if (!vs->modifiers_state[keycode]) {
1993 continue;
1994 }
8d447d10 1995 qemu_input_event_send_key_number(vs->vd->dcl.con, keycode, false);
c5ce8333 1996 qemu_input_event_send_key_delay(vs->vd->key_delay_ms);
7bc9318b
GH		 1997 }
1998}
1999
40066175
GH		 2000static const char *code2name(int keycode)
2001{
977c736f 2002 return QKeyCode_str(qemu_input_key_number_to_qcode(keycode));
40066175
GH		 2003}
2004
bdbd7676
FB		 2005static void key_event(VncState *vs, int down, uint32_t sym)
2006{
abb4f2c9
GH		 2007 bool shift = vs->modifiers_state[0x2a] || vs->modifiers_state[0x36];
2008 bool altgr = vs->modifiers_state[0xb8];
2009 bool ctrl = vs->modifiers_state[0x1d] || vs->modifiers_state[0x9d];
9ca313aa 2010 int keycode;
4a93fe17 2011 int lsym = sym;
9ca313aa 2012
81c0d5a6 2013 if (lsym >= 'A' && lsym <= 'Z' && qemu_console_is_graphic(NULL)) {
4a93fe17
GH		 2014 lsym = lsym - 'A' + 'a';
2015 }
9ca313aa 2016
abb4f2c9
GH		 2017 keycode = keysym2scancode(vs->vd->kbd_layout, lsym & 0xFFFF,
2018 shift, altgr, ctrl) & SCANCODE_KEYMASK;
40066175 2019 trace_vnc_key_event_map(down, sym, keycode, code2name(keycode));
9ca313aa
AL		 2020 do_key_event(vs, down, keycode, sym);
2021}
2022
2023static void ext_key_event(VncState *vs, int down,
2024 uint32_t sym, uint16_t keycode)
2025{
2026 /* if the user specifies a keyboard layout, always use it */
40066175 2027 if (keyboard_layout) {
9ca313aa 2028 key_event(vs, down, sym);
40066175
GH		 2029 } else {
2030 trace_vnc_key_event_ext(down, sym, keycode, code2name(keycode));
9ca313aa 2031 do_key_event(vs, down, keycode, sym);
40066175 2032 }
bdbd7676
FB		 2033}
2034
24236869 2035static void framebuffer_update_request(VncState *vs, int incremental,
bea60dd7 2036 int x, int y, int w, int h)
24236869 2037{
bea60dd7 2038 if (incremental) {
fef1bbad
DB		 2039 if (vs->update != VNC_STATE_UPDATE_FORCE) {
2040 vs->update = VNC_STATE_UPDATE_INCREMENTAL;
2041 }
2042 } else {
2043 vs->update = VNC_STATE_UPDATE_FORCE;
2044 vnc_set_area_dirty(vs->dirty, vs->vd, x, y, w, h);
24236869
FB		 2045 }
2046}
2047
9ca313aa
AL		 2048static void send_ext_key_event_ack(VncState *vs)
2049{
bd023f95 2050 vnc_lock_output(vs);
46a183da 2051 vnc_write_u8(vs, VNC_MSG_SERVER_FRAMEBUFFER_UPDATE);
9ca313aa
AL		 2052 vnc_write_u8(vs, 0);
2053 vnc_write_u16(vs, 1);
d39fa6d8 2054 vnc_framebuffer_update(vs, 0, 0,
bea60dd7
PL		 2055 pixman_image_get_width(vs->vd->server),
2056 pixman_image_get_height(vs->vd->server),
29fa4ed9 2057 VNC_ENCODING_EXT_KEY_EVENT);
bd023f95 2058 vnc_unlock_output(vs);
9ca313aa
AL		 2059 vnc_flush(vs);
2060}
2061
429a8ed3 2062static void send_ext_audio_ack(VncState *vs)
2063{
bd023f95 2064 vnc_lock_output(vs);
46a183da 2065 vnc_write_u8(vs, VNC_MSG_SERVER_FRAMEBUFFER_UPDATE);
429a8ed3 2066 vnc_write_u8(vs, 0);
2067 vnc_write_u16(vs, 1);
d39fa6d8 2068 vnc_framebuffer_update(vs, 0, 0,
bea60dd7
PL		 2069 pixman_image_get_width(vs->vd->server),
2070 pixman_image_get_height(vs->vd->server),
29fa4ed9 2071 VNC_ENCODING_AUDIO);
bd023f95 2072 vnc_unlock_output(vs);
429a8ed3 2073 vnc_flush(vs);
2074}
2075
24236869
FB		 2076static void set_encodings(VncState *vs, int32_t *encodings, size_t n_encodings)
2077{
2078 int i;
29fa4ed9 2079 unsigned int enc = 0;
24236869 2080
29fa4ed9 2081 vs->features = 0;
a9f20d31 2082 vs->vnc_encoding = 0;
d1af0e05
CC		 2083 vs->tight.compression = 9;
2084 vs->tight.quality = -1; /* Lossless by default */
564c337e 2085 vs->absolute = -1;
24236869 2086
8a0f0d0c
CC		 2087 /*
2088 * Start from the end because the encodings are sent in order of preference.
e5bed759 2089 * This way the preferred encoding (first encoding defined in the array)
8a0f0d0c
CC		 2090 * will be set at the end of the loop.
2091 */
24236869 2092 for (i = n_encodings - 1; i >= 0; i--) {
29fa4ed9
AL		 2093 enc = encodings[i];
2094 switch (enc) {
2095 case VNC_ENCODING_RAW:
a9f20d31 2096 vs->vnc_encoding = enc;
29fa4ed9
AL		 2097 break;
2098 case VNC_ENCODING_COPYRECT:
753b4053 2099 vs->features |= VNC_FEATURE_COPYRECT_MASK;
29fa4ed9
AL		 2100 break;
2101 case VNC_ENCODING_HEXTILE:
2102 vs->features |= VNC_FEATURE_HEXTILE_MASK;
a9f20d31 2103 vs->vnc_encoding = enc;
29fa4ed9 2104 break;
380282b0
CC		 2105 case VNC_ENCODING_TIGHT:
2106 vs->features |= VNC_FEATURE_TIGHT_MASK;
2107 vs->vnc_encoding = enc;
2108 break;
fe3e7f2d 2109#ifdef CONFIG_VNC_PNG
efe556ad
CC		 2110 case VNC_ENCODING_TIGHT_PNG:
2111 vs->features |= VNC_FEATURE_TIGHT_PNG_MASK;
2112 vs->vnc_encoding = enc;
2113 break;
fe3e7f2d 2114#endif
059cef40
AL		 2115 case VNC_ENCODING_ZLIB:
2116 vs->features |= VNC_FEATURE_ZLIB_MASK;
a9f20d31 2117 vs->vnc_encoding = enc;
059cef40 2118 break;
148954fa
CC		 2119 case VNC_ENCODING_ZRLE:
2120 vs->features |= VNC_FEATURE_ZRLE_MASK;
2121 vs->vnc_encoding = enc;
2122 break;
2123 case VNC_ENCODING_ZYWRLE:
2124 vs->features |= VNC_FEATURE_ZYWRLE_MASK;
2125 vs->vnc_encoding = enc;
2126 break;
29fa4ed9
AL		 2127 case VNC_ENCODING_DESKTOPRESIZE:
2128 vs->features |= VNC_FEATURE_RESIZE_MASK;
2129 break;
2130 case VNC_ENCODING_POINTER_TYPE_CHANGE:
2131 vs->features |= VNC_FEATURE_POINTER_TYPE_CHANGE_MASK;
2132 break;
d467b679
GH		 2133 case VNC_ENCODING_RICH_CURSOR:
2134 vs->features |= VNC_FEATURE_RICH_CURSOR_MASK;
91ec41dc
FZ		 2135 if (vs->vd->cursor) {
2136 vnc_cursor_define(vs);
2137 }
d467b679 2138 break;
29fa4ed9 2139 case VNC_ENCODING_EXT_KEY_EVENT:
9ca313aa
AL		 2140 send_ext_key_event_ack(vs);
2141 break;
29fa4ed9 2142 case VNC_ENCODING_AUDIO:
429a8ed3 2143 send_ext_audio_ack(vs);
2144 break;
29fa4ed9
AL		 2145 case VNC_ENCODING_WMVi:
2146 vs->features |= VNC_FEATURE_WMVI_MASK;
ca4cca4d 2147 break;
ab99e5c1
LL		 2148 case VNC_ENCODING_LED_STATE:
2149 vs->features |= VNC_FEATURE_LED_STATE_MASK;
2150 break;
fb437313 2151 case VNC_ENCODING_COMPRESSLEVEL0 ... VNC_ENCODING_COMPRESSLEVEL0 + 9:
d1af0e05 2152 vs->tight.compression = (enc & 0x0F);
fb437313
AL		 2153 break;
2154 case VNC_ENCODING_QUALITYLEVEL0 ... VNC_ENCODING_QUALITYLEVEL0 + 9:
b31f519e
CC		 2155 if (vs->vd->lossy) {
2156 vs->tight.quality = (enc & 0x0F);
2157 }
fb437313 2158 break;
29fa4ed9
AL		 2159 default:
2160 VNC_DEBUG("Unknown encoding: %d (0x%.8x): %d\n", i, enc, enc);
2161 break;
2162 }
24236869 2163 }
6356e472 2164 vnc_desktop_resize(vs);
9e8dd451 2165 check_pointer_type_change(&vs->mouse_mode_notifier, NULL);
ab99e5c1 2166 vnc_led_state_change(vs);
24236869
FB		 2167}
2168
6cec5487
AL		 2169static void set_pixel_conversion(VncState *vs)
2170{
9f64916d
GH		 2171 pixman_format_code_t fmt = qemu_pixman_get_format(&vs->client_pf);
2172
2173 if (fmt == VNC_SERVER_FB_FORMAT) {
6cec5487 2174 vs->write_pixels = vnc_write_pixels_copy;
70a4568f 2175 vnc_hextile_set_pixel_conversion(vs, 0);
6cec5487
AL		 2176 } else {
2177 vs->write_pixels = vnc_write_pixels_generic;
70a4568f 2178 vnc_hextile_set_pixel_conversion(vs, 1);
6cec5487
AL		 2179 }
2180}
2181
0c426e45
AG		 2182static void send_color_map(VncState *vs)
2183{
2184 int i;
2185
2186 vnc_write_u8(vs, VNC_MSG_SERVER_SET_COLOUR_MAP_ENTRIES);
2187 vnc_write_u8(vs, 0); /* padding */
2188 vnc_write_u16(vs, 0); /* first color */
2189 vnc_write_u16(vs, 256); /* # of colors */
2190
2191 for (i = 0; i < 256; i++) {
2192 PixelFormat *pf = &vs->client_pf;
2193
2194 vnc_write_u16(vs, (((i >> pf->rshift) & pf->rmax) << (16 - pf->rbits)));
2195 vnc_write_u16(vs, (((i >> pf->gshift) & pf->gmax) << (16 - pf->gbits)));
2196 vnc_write_u16(vs, (((i >> pf->bshift) & pf->bmax) << (16 - pf->bbits)));
2197 }
2198}
2199
ec9fb41a 2200static void set_pixel_format(VncState *vs, int bits_per_pixel,
28a76be8
AL		 2201 int big_endian_flag, int true_color_flag,
2202 int red_max, int green_max, int blue_max,
2203 int red_shift, int green_shift, int blue_shift)
24236869 2204{
3512779a 2205 if (!true_color_flag) {
0c426e45
AG		 2206 /* Expose a reasonable default 256 color map */
2207 bits_per_pixel = 8;
0c426e45
AG		 2208 red_max = 7;
2209 green_max = 7;
2210 blue_max = 3;
2211 red_shift = 0;
2212 green_shift = 3;
2213 blue_shift = 6;
3512779a 2214 }
24236869 2215
e6908bfe
PM		 2216 switch (bits_per_pixel) {
2217 case 8:
2218 case 16:
2219 case 32:
2220 break;
2221 default:
2222 vnc_client_error(vs);
2223 return;
2224 }
2225
4c65fed8 2226 vs->client_pf.rmax = red_max ? red_max : 0xFF;
7c9209e7 2227 vs->client_pf.rbits = ctpopl(red_max);
9f64916d
GH		 2228 vs->client_pf.rshift = red_shift;
2229 vs->client_pf.rmask = red_max << red_shift;
4c65fed8 2230 vs->client_pf.gmax = green_max ? green_max : 0xFF;
7c9209e7 2231 vs->client_pf.gbits = ctpopl(green_max);
9f64916d
GH		 2232 vs->client_pf.gshift = green_shift;
2233 vs->client_pf.gmask = green_max << green_shift;
4c65fed8 2234 vs->client_pf.bmax = blue_max ? blue_max : 0xFF;
7c9209e7 2235 vs->client_pf.bbits = ctpopl(blue_max);
9f64916d
GH		 2236 vs->client_pf.bshift = blue_shift;
2237 vs->client_pf.bmask = blue_max << blue_shift;
2238 vs->client_pf.bits_per_pixel = bits_per_pixel;
2239 vs->client_pf.bytes_per_pixel = bits_per_pixel / 8;
2240 vs->client_pf.depth = bits_per_pixel == 32 ? 24 : bits_per_pixel;
2241 vs->client_be = big_endian_flag;
6cec5487 2242
0c426e45
AG		 2243 if (!true_color_flag) {
2244 send_color_map(vs);
2245 }
2246
6cec5487 2247 set_pixel_conversion(vs);
24236869 2248
1d0d59fe
GH		 2249 graphic_hw_invalidate(vs->vd->dcl.con);
2250 graphic_hw_update(vs->vd->dcl.con);
24236869
FB		 2251}
2252
ca4cca4d
AL		 2253static void pixel_format_message (VncState *vs) {
2254 char pad[3] = { 0, 0, 0 };
2255
9f64916d
GH		 2256 vs->client_pf = qemu_default_pixelformat(32);
2257
2258 vnc_write_u8(vs, vs->client_pf.bits_per_pixel); /* bits-per-pixel */
2259 vnc_write_u8(vs, vs->client_pf.depth); /* depth */
ca4cca4d 2260
e2542fe2 2261#ifdef HOST_WORDS_BIGENDIAN
ca4cca4d
AL		 2262 vnc_write_u8(vs, 1); /* big-endian-flag */
2263#else
2264 vnc_write_u8(vs, 0); /* big-endian-flag */
2265#endif
2266 vnc_write_u8(vs, 1); /* true-color-flag */
9f64916d
GH		 2267 vnc_write_u16(vs, vs->client_pf.rmax); /* red-max */
2268 vnc_write_u16(vs, vs->client_pf.gmax); /* green-max */
2269 vnc_write_u16(vs, vs->client_pf.bmax); /* blue-max */
2270 vnc_write_u8(vs, vs->client_pf.rshift); /* red-shift */
2271 vnc_write_u8(vs, vs->client_pf.gshift); /* green-shift */
2272 vnc_write_u8(vs, vs->client_pf.bshift); /* blue-shift */
2273 vnc_write(vs, pad, 3); /* padding */
70a4568f
CC		 2274
2275 vnc_hextile_set_pixel_conversion(vs, 0);
ca4cca4d 2276 vs->write_pixels = vnc_write_pixels_copy;
ca4cca4d
AL		 2277}
2278
753b4053 2279static void vnc_colordepth(VncState *vs)
7eac3a87 2280{
753b4053 2281 if (vnc_has_feature(vs, VNC_FEATURE_WMVI)) {
ca4cca4d 2282 /* Sending a WMVi message to notify the client*/
bd023f95 2283 vnc_lock_output(vs);
46a183da 2284 vnc_write_u8(vs, VNC_MSG_SERVER_FRAMEBUFFER_UPDATE);
ca4cca4d
AL		 2285 vnc_write_u8(vs, 0);
2286 vnc_write_u16(vs, 1); /* number of rects */
d39fa6d8 2287 vnc_framebuffer_update(vs, 0, 0,
bea60dd7
PL		 2288 pixman_image_get_width(vs->vd->server),
2289 pixman_image_get_height(vs->vd->server),
d39fa6d8 2290 VNC_ENCODING_WMVi);
ca4cca4d 2291 pixel_format_message(vs);
bd023f95 2292 vnc_unlock_output(vs);
ca4cca4d 2293 vnc_flush(vs);
7eac3a87 2294 } else {
6cec5487 2295 set_pixel_conversion(vs);
7eac3a87
AL		 2296 }
2297}
2298
60fe76f3 2299static int protocol_client_msg(VncState *vs, uint8_t *data, size_t len)
24236869
FB		 2300{
2301 int i;
2302 uint16_t limit;
cf070658 2303 uint32_t freq;
2430ffe4
SS		 2304 VncDisplay *vd = vs->vd;
2305
2306 if (data[0] > 3) {
0f7b2864 2307 update_displaychangelistener(&vd->dcl, VNC_REFRESH_INTERVAL_BASE);
2430ffe4 2308 }
24236869
FB		 2309
2310 switch (data[0]) {
46a183da 2311 case VNC_MSG_CLIENT_SET_PIXEL_FORMAT:
28a76be8
AL		 2312 if (len == 1)
2313 return 20;
2314
ec9fb41a 2315 set_pixel_format(vs, read_u8(data, 4),
28a76be8
AL		 2316 read_u8(data, 6), read_u8(data, 7),
2317 read_u16(data, 8), read_u16(data, 10),
2318 read_u16(data, 12), read_u8(data, 14),
2319 read_u8(data, 15), read_u8(data, 16));
2320 break;
46a183da 2321 case VNC_MSG_CLIENT_SET_ENCODINGS:
28a76be8
AL		 2322 if (len == 1)
2323 return 4;
24236869 2324
28a76be8 2325 if (len == 4) {
69dd5c9f
AL		 2326 limit = read_u16(data, 2);
2327 if (limit > 0)
2328 return 4 + (limit * 4);
2329 } else
2330 limit = read_u16(data, 2);
24236869 2331
28a76be8
AL		 2332 for (i = 0; i < limit; i++) {
2333 int32_t val = read_s32(data, 4 + (i * 4));
2334 memcpy(data + 4 + (i * 4), &val, sizeof(val));
2335 }
24236869 2336
28a76be8
AL		 2337 set_encodings(vs, (int32_t *)(data + 4), limit);
2338 break;
46a183da 2339 case VNC_MSG_CLIENT_FRAMEBUFFER_UPDATE_REQUEST:
28a76be8
AL		 2340 if (len == 1)
2341 return 10;
24236869 2342
28a76be8
AL		 2343 framebuffer_update_request(vs,
2344 read_u8(data, 1), read_u16(data, 2), read_u16(data, 4),
2345 read_u16(data, 6), read_u16(data, 8));
2346 break;
46a183da 2347 case VNC_MSG_CLIENT_KEY_EVENT:
28a76be8
AL		 2348 if (len == 1)
2349 return 8;
24236869 2350
28a76be8
AL		 2351 key_event(vs, read_u8(data, 1), read_u32(data, 4));
2352 break;
46a183da 2353 case VNC_MSG_CLIENT_POINTER_EVENT:
28a76be8
AL		 2354 if (len == 1)
2355 return 6;
24236869 2356
28a76be8
AL		 2357 pointer_event(vs, read_u8(data, 1), read_u16(data, 2), read_u16(data, 4));
2358 break;
46a183da 2359 case VNC_MSG_CLIENT_CUT_TEXT:
f9a70e79 2360 if (len == 1) {
28a76be8 2361 return 8;
f9a70e79 2362 }
28a76be8 2363 if (len == 8) {
baa7666c 2364 uint32_t dlen = read_u32(data, 4);
f9a70e79
PL		 2365 if (dlen > (1 << 20)) {
2366 error_report("vnc: client_cut_text msg payload has %u bytes"
2367 " which exceeds our limit of 1MB.", dlen);
2368 vnc_client_error(vs);
2369 break;
2370 }
2371 if (dlen > 0) {
baa7666c 2372 return 8 + dlen;
f9a70e79 2373 }
baa7666c 2374 }
24236869 2375
28a76be8
AL		 2376 client_cut_text(vs, read_u32(data, 4), data + 8);
2377 break;
46a183da 2378 case VNC_MSG_CLIENT_QEMU:
9ca313aa
AL		 2379 if (len == 1)
2380 return 2;
2381
2382 switch (read_u8(data, 1)) {
46a183da 2383 case VNC_MSG_CLIENT_QEMU_EXT_KEY_EVENT:
9ca313aa
AL		 2384 if (len == 2)
2385 return 12;
2386
2387 ext_key_event(vs, read_u16(data, 2),
2388 read_u32(data, 4), read_u32(data, 8));
2389 break;
46a183da 2390 case VNC_MSG_CLIENT_QEMU_AUDIO:
429a8ed3 2391 if (len == 2)
2392 return 4;
2393
2394 switch (read_u16 (data, 2)) {
46a183da 2395 case VNC_MSG_CLIENT_QEMU_AUDIO_ENABLE:
429a8ed3 2396 audio_add(vs);
2397 break;
46a183da 2398 case VNC_MSG_CLIENT_QEMU_AUDIO_DISABLE:
429a8ed3 2399 audio_del(vs);
2400 break;
46a183da 2401 case VNC_MSG_CLIENT_QEMU_AUDIO_SET_FORMAT:
429a8ed3 2402 if (len == 4)
2403 return 10;
2404 switch (read_u8(data, 4)) {
2405 case 0: vs->as.fmt = AUD_FMT_U8; break;
2406 case 1: vs->as.fmt = AUD_FMT_S8; break;
2407 case 2: vs->as.fmt = AUD_FMT_U16; break;
2408 case 3: vs->as.fmt = AUD_FMT_S16; break;
2409 case 4: vs->as.fmt = AUD_FMT_U32; break;
2410 case 5: vs->as.fmt = AUD_FMT_S32; break;
2411 default:
153130cd 2412 VNC_DEBUG("Invalid audio format %d\n", read_u8(data, 4));
429a8ed3 2413 vnc_client_error(vs);
2414 break;
2415 }
2416 vs->as.nchannels = read_u8(data, 5);
2417 if (vs->as.nchannels != 1 && vs->as.nchannels != 2) {
090fdc83 2418 VNC_DEBUG("Invalid audio channel count %d\n",
153130cd 2419 read_u8(data, 5));
429a8ed3 2420 vnc_client_error(vs);
2421 break;
2422 }
cf070658
DB		 2423 freq = read_u32(data, 6);
2424 /* No official limit for protocol, but 48khz is a sensible
2425 * upper bound for trustworthy clients, and this limit
2426 * protects calculations involving 'vs->as.freq' later.
2427 */
2428 if (freq > 48000) {
2429 VNC_DEBUG("Invalid audio frequency %u > 48000", freq);
2430 vnc_client_error(vs);
2431 break;
2432 }
2433 vs->as.freq = freq;
429a8ed3 2434 break;
2435 default:
153130cd 2436 VNC_DEBUG("Invalid audio message %d\n", read_u8(data, 4));
429a8ed3 2437 vnc_client_error(vs);
2438 break;
2439 }
2440 break;
2441
9ca313aa 2442 default:
153130cd 2443 VNC_DEBUG("Msg: %d\n", read_u16(data, 0));
9ca313aa
AL		 2444 vnc_client_error(vs);
2445 break;
2446 }
2447 break;
24236869 2448 default:
153130cd 2449 VNC_DEBUG("Msg: %d\n", data[0]);
28a76be8
AL		 2450 vnc_client_error(vs);
2451 break;
24236869 2452 }
5fafdf24 2453
e2b72cb6 2454 vnc_update_throttle_offset(vs);
24236869
FB		 2455 vnc_read_when(vs, protocol_client_msg, 1);
2456 return 0;
2457}
2458
60fe76f3 2459static int protocol_client_init(VncState *vs, uint8_t *data, size_t len)
24236869 2460{
c35734b2 2461 char buf[1024];
8cf36489 2462 VncShareMode mode;
c35734b2 2463 int size;
24236869 2464
8cf36489
GH		 2465 mode = data[0] ? VNC_SHARE_MODE_SHARED : VNC_SHARE_MODE_EXCLUSIVE;
2466 switch (vs->vd->share_policy) {
2467 case VNC_SHARE_POLICY_IGNORE:
2468 /*
2469 * Ignore the shared flag. Nothing to do here.
2470 *
2471 * Doesn't conform to the rfb spec but is traditional qemu
2472 * behavior, thus left here as option for compatibility
2473 * reasons.
2474 */
2475 break;
2476 case VNC_SHARE_POLICY_ALLOW_EXCLUSIVE:
2477 /*
2478 * Policy: Allow clients ask for exclusive access.
2479 *
2480 * Implementation: When a client asks for exclusive access,
2481 * disconnect all others. Shared connects are allowed as long
2482 * as no exclusive connection exists.
2483 *
2484 * This is how the rfb spec suggests to handle the shared flag.
2485 */
2486 if (mode == VNC_SHARE_MODE_EXCLUSIVE) {
2487 VncState *client;
2488 QTAILQ_FOREACH(client, &vs->vd->clients, next) {
2489 if (vs == client) {
2490 continue;
2491 }
2492 if (client->share_mode != VNC_SHARE_MODE_EXCLUSIVE &&
2493 client->share_mode != VNC_SHARE_MODE_SHARED) {
2494 continue;
2495 }
2496 vnc_disconnect_start(client);
2497 }
2498 }
2499 if (mode == VNC_SHARE_MODE_SHARED) {
2500 if (vs->vd->num_exclusive > 0) {
2501 vnc_disconnect_start(vs);
2502 return 0;
2503 }
2504 }
2505 break;
2506 case VNC_SHARE_POLICY_FORCE_SHARED:
2507 /*
2508 * Policy: Shared connects only.
2509 * Implementation: Disallow clients asking for exclusive access.
2510 *
2511 * Useful for shared desktop sessions where you don't want
2512 * someone forgetting to say -shared when running the vnc
2513 * client disconnect everybody else.
2514 */
2515 if (mode == VNC_SHARE_MODE_EXCLUSIVE) {
2516 vnc_disconnect_start(vs);
2517 return 0;
2518 }
2519 break;
2520 }
2521 vnc_set_share_mode(vs, mode);
2522
e5f34cdd
GH		 2523 if (vs->vd->num_shared > vs->vd->connections_limit) {
2524 vnc_disconnect_start(vs);
2525 return 0;
2526 }
2527
4c956bd8
DB		 2528 assert(pixman_image_get_width(vs->vd->server) < 65536 &&
2529 pixman_image_get_width(vs->vd->server) >= 0);
2530 assert(pixman_image_get_height(vs->vd->server) < 65536 &&
2531 pixman_image_get_height(vs->vd->server) >= 0);
bea60dd7
PL		 2532 vs->client_width = pixman_image_get_width(vs->vd->server);
2533 vs->client_height = pixman_image_get_height(vs->vd->server);
5862d195
GH		 2534 vnc_write_u16(vs, vs->client_width);
2535 vnc_write_u16(vs, vs->client_height);
24236869 2536
ca4cca4d 2537 pixel_format_message(vs);
24236869 2538
97efe4f9 2539 if (qemu_name) {
c35734b2 2540 size = snprintf(buf, sizeof(buf), "QEMU (%s)", qemu_name);
97efe4f9
TH		 2541 if (size > sizeof(buf)) {
2542 size = sizeof(buf);
2543 }
2544 } else {
c35734b2 2545 size = snprintf(buf, sizeof(buf), "QEMU");
97efe4f9 2546 }
c35734b2
TS		 2547
2548 vnc_write_u32(vs, size);
2549 vnc_write(vs, buf, size);
24236869
FB		 2550 vnc_flush(vs);
2551
4a80dba3 2552 vnc_client_cache_auth(vs);
fb6ba0d5 2553 vnc_qmp_event(vs, QAPI_EVENT_VNC_INITIALIZED);
4a80dba3 2554
24236869
FB		 2555 vnc_read_when(vs, protocol_client_msg, 1);
2556
2557 return 0;
2558}
2559
5fb6c7a8
AL		 2560void start_client_init(VncState *vs)
2561{
2562 vnc_read_when(vs, protocol_client_init, 1);
2563}
2564
70848515
TS		 2565static void make_challenge(VncState *vs)
2566{
2567 int i;
2568
2569 srand(time(NULL)+getpid()+getpid()*987654+rand());
2570
2571 for (i = 0 ; i < sizeof(vs->challenge) ; i++)
2572 vs->challenge[i] = (int) (256.0*rand()/(RAND_MAX+1.0));
2573}
2574
60fe76f3 2575static int protocol_client_auth_vnc(VncState *vs, uint8_t *data, size_t len)
70848515 2576{
60fe76f3 2577 unsigned char response[VNC_AUTH_CHALLENGE_SIZE];
800567a6 2578 size_t i, pwlen;
60fe76f3 2579 unsigned char key[8];
3c9405a0 2580 time_t now = time(NULL);
60928458 2581 QCryptoCipher *cipher = NULL;
800567a6 2582 Error *err = NULL;
70848515 2583
1cd20f8b 2584 if (!vs->vd->password) {
7364dbda 2585 trace_vnc_auth_fail(vs, vs->auth, "password is not set", "");
6bffdf0f 2586 goto reject;
70848515 2587 }
3c9405a0 2588 if (vs->vd->expires < now) {
7364dbda 2589 trace_vnc_auth_fail(vs, vs->auth, "password is expired", "");
3c9405a0
GH		 2590 goto reject;
2591 }
70848515
TS		 2592
2593 memcpy(response, vs->challenge, VNC_AUTH_CHALLENGE_SIZE);
2594
2595 /* Calculate the expected challenge response */
753b4053 2596 pwlen = strlen(vs->vd->password);
70848515 2597 for (i=0; i<sizeof(key); i++)
753b4053 2598 key[i] = i<pwlen ? vs->vd->password[i] : 0;
800567a6
DB		 2599
2600 cipher = qcrypto_cipher_new(
2601 QCRYPTO_CIPHER_ALG_DES_RFB,
2602 QCRYPTO_CIPHER_MODE_ECB,
2603 key, G_N_ELEMENTS(key),
2604 &err);
2605 if (!cipher) {
7364dbda
DB		 2606 trace_vnc_auth_fail(vs, vs->auth, "cannot create cipher",
2607 error_get_pretty(err));
800567a6
DB		 2608 error_free(err);
2609 goto reject;
2610 }
2611
a1695137 2612 if (qcrypto_cipher_encrypt(cipher,
800567a6
DB		 2613 vs->challenge,
2614 response,
2615 VNC_AUTH_CHALLENGE_SIZE,
2616 &err) < 0) {
7364dbda
DB		 2617 trace_vnc_auth_fail(vs, vs->auth, "cannot encrypt challenge response",
2618 error_get_pretty(err));
800567a6
DB		 2619 error_free(err);
2620 goto reject;
2621 }
70848515
TS		 2622
2623 /* Compare expected vs actual challenge response */
2624 if (memcmp(response, data, VNC_AUTH_CHALLENGE_SIZE) != 0) {
7364dbda 2625 trace_vnc_auth_fail(vs, vs->auth, "mis-matched challenge response", "");
6bffdf0f 2626 goto reject;
70848515 2627 } else {
7364dbda 2628 trace_vnc_auth_pass(vs, vs->auth);
28a76be8
AL		 2629 vnc_write_u32(vs, 0); /* Accept auth */
2630 vnc_flush(vs);
70848515 2631
5fb6c7a8 2632 start_client_init(vs);
70848515 2633 }
60928458
GA		 2634
2635 qcrypto_cipher_free(cipher);
70848515 2636 return 0;
6bffdf0f
GH		 2637
2638reject:
2639 vnc_write_u32(vs, 1); /* Reject auth */
2640 if (vs->minor >= 8) {
2641 static const char err[] = "Authentication failed";
2642 vnc_write_u32(vs, sizeof(err));
2643 vnc_write(vs, err, sizeof(err));
2644 }
2645 vnc_flush(vs);
2646 vnc_client_error(vs);
60928458 2647 qcrypto_cipher_free(cipher);
6bffdf0f 2648 return 0;
70848515
TS		 2649}
2650
5fb6c7a8 2651void start_auth_vnc(VncState *vs)
70848515
TS		 2652{
2653 make_challenge(vs);
2654 /* Send client a 'random' challenge */
2655 vnc_write(vs, vs->challenge, sizeof(vs->challenge));
2656 vnc_flush(vs);
2657
2658 vnc_read_when(vs, protocol_client_auth_vnc, sizeof(vs->challenge));
469b15c6
TS		 2659}
2660
2661
60fe76f3 2662static int protocol_client_auth(VncState *vs, uint8_t *data, size_t len)
70848515
TS		 2663{
2664 /* We only advertise 1 auth scheme at a time, so client
2665 * must pick the one we sent. Verify this */
7e7e2ebc 2666 if (data[0] != vs->auth) { /* Reject auth */
7364dbda 2667 trace_vnc_auth_reject(vs, vs->auth, (int)data[0]);
70848515
TS		 2668 vnc_write_u32(vs, 1);
2669 if (vs->minor >= 8) {
2670 static const char err[] = "Authentication failed";
2671 vnc_write_u32(vs, sizeof(err));
2672 vnc_write(vs, err, sizeof(err));
2673 }
2674 vnc_client_error(vs);
2675 } else { /* Accept requested auth */
7364dbda 2676 trace_vnc_auth_start(vs, vs->auth);
7e7e2ebc 2677 switch (vs->auth) {
70848515 2678 case VNC_AUTH_NONE:
a26c97ad
AZ		 2679 if (vs->minor >= 8) {
2680 vnc_write_u32(vs, 0); /* Accept auth completion */
2681 vnc_flush(vs);
2682 }
7364dbda 2683 trace_vnc_auth_pass(vs, vs->auth);
5fb6c7a8 2684 start_client_init(vs);
70848515
TS		 2685 break;
2686
2687 case VNC_AUTH_VNC:
5fb6c7a8
AL		 2688 start_auth_vnc(vs);
2689 break;
70848515 2690
8d5d2d4c 2691 case VNC_AUTH_VENCRYPT:
5fb6c7a8
AL		 2692 start_auth_vencrypt(vs);
2693 break;
8d5d2d4c 2694
2f9606b3
AL		 2695#ifdef CONFIG_VNC_SASL
2696 case VNC_AUTH_SASL:
2f9606b3
AL		 2697 start_auth_sasl(vs);
2698 break;
2699#endif /* CONFIG_VNC_SASL */
2700
70848515 2701 default: /* Should not be possible, but just in case */
7364dbda 2702 trace_vnc_auth_fail(vs, vs->auth, "Unhandled auth method", "");
70848515
TS		 2703 vnc_write_u8(vs, 1);
2704 if (vs->minor >= 8) {
2705 static const char err[] = "Authentication failed";
2706 vnc_write_u32(vs, sizeof(err));
2707 vnc_write(vs, err, sizeof(err));
2708 }
2709 vnc_client_error(vs);
2710 }
2711 }
2712 return 0;
2713}
2714
60fe76f3 2715static int protocol_version(VncState *vs, uint8_t *version, size_t len)
24236869
FB		 2716{
2717 char local[13];
24236869
FB		 2718
2719 memcpy(local, version, 12);
2720 local[12] = 0;
2721
70848515 2722 if (sscanf(local, "RFB %03d.%03d\n", &vs->major, &vs->minor) != 2) {
28a76be8
AL		 2723 VNC_DEBUG("Malformed protocol version %s\n", local);
2724 vnc_client_error(vs);
2725 return 0;
24236869 2726 }
70848515
TS		 2727 VNC_DEBUG("Client request protocol version %d.%d\n", vs->major, vs->minor);
2728 if (vs->major != 3 ||
28a76be8
AL		 2729 (vs->minor != 3 &&
2730 vs->minor != 4 &&
2731 vs->minor != 5 &&
2732 vs->minor != 7 &&
2733 vs->minor != 8)) {
2734 VNC_DEBUG("Unsupported client version\n");
2735 vnc_write_u32(vs, VNC_AUTH_INVALID);
2736 vnc_flush(vs);
2737 vnc_client_error(vs);
2738 return 0;
70848515 2739 }
b0566f4f 2740 /* Some broken clients report v3.4 or v3.5, which spec requires to be treated
70848515
TS		 2741 * as equivalent to v3.3 by servers
2742 */
b0566f4f 2743 if (vs->minor == 4 || vs->minor == 5)
28a76be8 2744 vs->minor = 3;
70848515
TS		 2745
2746 if (vs->minor == 3) {
7364dbda 2747 trace_vnc_auth_start(vs, vs->auth);
7e7e2ebc 2748 if (vs->auth == VNC_AUTH_NONE) {
7e7e2ebc 2749 vnc_write_u32(vs, vs->auth);
70848515 2750 vnc_flush(vs);
7364dbda 2751 trace_vnc_auth_pass(vs, vs->auth);
28a76be8 2752 start_client_init(vs);
7e7e2ebc 2753 } else if (vs->auth == VNC_AUTH_VNC) {
70848515 2754 VNC_DEBUG("Tell client VNC auth\n");
7e7e2ebc 2755 vnc_write_u32(vs, vs->auth);
70848515
TS		 2756 vnc_flush(vs);
2757 start_auth_vnc(vs);
2758 } else {
7364dbda
DB		 2759 trace_vnc_auth_fail(vs, vs->auth,
2760 "Unsupported auth method for v3.3", "");
70848515
TS		 2761 vnc_write_u32(vs, VNC_AUTH_INVALID);
2762 vnc_flush(vs);
2763 vnc_client_error(vs);
2764 }
2765 } else {
28a76be8 2766 vnc_write_u8(vs, 1); /* num auth */
7e7e2ebc 2767 vnc_write_u8(vs, vs->auth);
28a76be8
AL		 2768 vnc_read_when(vs, protocol_client_auth, 1);
2769 vnc_flush(vs);
70848515 2770 }
24236869
FB		 2771
2772 return 0;
2773}
2774
999342a0
CC		 2775static VncRectStat *vnc_stat_rect(VncDisplay *vd, int x, int y)
2776{
2777 struct VncSurface *vs = &vd->guest;
2778
2779 return &vs->stats[y / VNC_STAT_RECT][x / VNC_STAT_RECT];
2780}
2781
7d964c9d
CC		 2782void vnc_sent_lossy_rect(VncState *vs, int x, int y, int w, int h)
2783{
2784 int i, j;
2785
2786 w = (x + w) / VNC_STAT_RECT;
2787 h = (y + h) / VNC_STAT_RECT;
2788 x /= VNC_STAT_RECT;
2789 y /= VNC_STAT_RECT;
2790
207f328a
CC		 2791 for (j = y; j <= h; j++) {
2792 for (i = x; i <= w; i++) {
7d964c9d
CC		 2793 vs->lossy_rect[j][i] = 1;
2794 }
2795 }
2796}
2797
2798static int vnc_refresh_lossy_rect(VncDisplay *vd, int x, int y)
2799{
2800 VncState *vs;
2801 int sty = y / VNC_STAT_RECT;
2802 int stx = x / VNC_STAT_RECT;
2803 int has_dirty = 0;
2804
5a3804db
MAL		 2805 y = QEMU_ALIGN_DOWN(y, VNC_STAT_RECT);
2806 x = QEMU_ALIGN_DOWN(x, VNC_STAT_RECT);
7d964c9d
CC		 2807
2808 QTAILQ_FOREACH(vs, &vd->clients, next) {
bc2429b9 2809 int j;
7d964c9d
CC		 2810
2811 /* kernel send buffers are full -> refresh later */
2812 if (vs->output.offset) {
2813 continue;
2814 }
2815
2816 if (!vs->lossy_rect[sty][stx]) {
2817 continue;
2818 }
207f328a 2819
7d964c9d
CC		 2820 vs->lossy_rect[sty][stx] = 0;
2821 for (j = 0; j < VNC_STAT_RECT; ++j) {
b4c85ddc
PL		 2822 bitmap_set(vs->dirty[y + j],
2823 x / VNC_DIRTY_PIXELS_PER_BIT,
2824 VNC_STAT_RECT / VNC_DIRTY_PIXELS_PER_BIT);
7d964c9d
CC		 2825 }
2826 has_dirty++;
2827 }
207f328a 2828
7d964c9d
CC		 2829 return has_dirty;
2830}
2831
2832static int vnc_update_stats(VncDisplay *vd, struct timeval * tv)
999342a0 2833{
eebe0b79
GH		 2834 int width = MIN(pixman_image_get_width(vd->guest.fb),
2835 pixman_image_get_width(vd->server));
2836 int height = MIN(pixman_image_get_height(vd->guest.fb),
2837 pixman_image_get_height(vd->server));
999342a0
CC		 2838 int x, y;
2839 struct timeval res;
7d964c9d 2840 int has_dirty = 0;
999342a0 2841
9f64916d
GH		 2842 for (y = 0; y < height; y += VNC_STAT_RECT) {
2843 for (x = 0; x < width; x += VNC_STAT_RECT) {
999342a0
CC		 2844 VncRectStat *rect = vnc_stat_rect(vd, x, y);
2845
2846 rect->updated = false;
2847 }
2848 }
2849
ad620c29 2850 qemu_timersub(tv, &VNC_REFRESH_STATS, &res);
999342a0
CC		 2851
2852 if (timercmp(&vd->guest.last_freq_check, &res, >)) {
7d964c9d 2853 return has_dirty;
999342a0
CC		 2854 }
2855 vd->guest.last_freq_check = *tv;
2856
9f64916d
GH		 2857 for (y = 0; y < height; y += VNC_STAT_RECT) {
2858 for (x = 0; x < width; x += VNC_STAT_RECT) {
999342a0
CC		 2859 VncRectStat *rect= vnc_stat_rect(vd, x, y);
2860 int count = ARRAY_SIZE(rect->times);
2861 struct timeval min, max;
2862
2863 if (!timerisset(&rect->times[count - 1])) {
2864 continue ;
2865 }
2866
2867 max = rect->times[(rect->idx + count - 1) % count];
ad620c29 2868 qemu_timersub(tv, &max, &res);
999342a0
CC		 2869
2870 if (timercmp(&res, &VNC_REFRESH_LOSSY, >)) {
2871 rect->freq = 0;
7d964c9d 2872 has_dirty += vnc_refresh_lossy_rect(vd, x, y);
999342a0
CC		 2873 memset(rect->times, 0, sizeof (rect->times));
2874 continue ;
2875 }
2876
2877 min = rect->times[rect->idx];
2878 max = rect->times[(rect->idx + count - 1) % count];
ad620c29 2879 qemu_timersub(&max, &min, &res);
999342a0
CC		 2880
2881 rect->freq = res.tv_sec + res.tv_usec / 1000000.;
2882 rect->freq /= count;
2883 rect->freq = 1. / rect->freq;
2884 }
2885 }
7d964c9d 2886 return has_dirty;
999342a0
CC		 2887}
2888
2889double vnc_update_freq(VncState *vs, int x, int y, int w, int h)
2890{
2891 int i, j;
2892 double total = 0;
2893 int num = 0;
2894
5a3804db
MAL		 2895 x = QEMU_ALIGN_DOWN(x, VNC_STAT_RECT);
2896 y = QEMU_ALIGN_DOWN(y, VNC_STAT_RECT);
999342a0
CC		 2897
2898 for (j = y; j <= y + h; j += VNC_STAT_RECT) {
2899 for (i = x; i <= x + w; i += VNC_STAT_RECT) {
2900 total += vnc_stat_rect(vs->vd, i, j)->freq;
2901 num++;
2902 }
2903 }
2904
2905 if (num) {
2906 return total / num;
2907 } else {
2908 return 0;
2909 }
2910}
2911
2912static void vnc_rect_updated(VncDisplay *vd, int x, int y, struct timeval * tv)
2913{
2914 VncRectStat *rect;
2915
2916 rect = vnc_stat_rect(vd, x, y);
2917 if (rect->updated) {
2918 return ;
2919 }
2920 rect->times[rect->idx] = *tv;
2921 rect->idx = (rect->idx + 1) % ARRAY_SIZE(rect->times);
2922 rect->updated = true;
2923}
2924
1fc62412
SS		 2925static int vnc_refresh_server_surface(VncDisplay *vd)
2926{
bea60dd7
PL		 2927 int width = MIN(pixman_image_get_width(vd->guest.fb),
2928 pixman_image_get_width(vd->server));
2929 int height = MIN(pixman_image_get_height(vd->guest.fb),
2930 pixman_image_get_height(vd->server));
eb8934b0 2931 int cmp_bytes, server_stride, line_bytes, guest_ll, guest_stride, y = 0;
12b316d4 2932 uint8_t *guest_row0 = NULL, *server_row0;
41b4bef6 2933 VncState *vs;
1fc62412 2934 int has_dirty = 0;
9f64916d 2935 pixman_image_t *tmpbuf = NULL;
1fc62412 2936
80e0c8c3 2937 struct timeval tv = { 0, 0 };
999342a0 2938
80e0c8c3
CC		 2939 if (!vd->non_adaptive) {
2940 gettimeofday(&tv, NULL);
2941 has_dirty = vnc_update_stats(vd, &tv);
2942 }
999342a0 2943
1fc62412
SS		 2944 /*
2945 * Walk through the guest dirty map.
2946 * Check and copy modified bits from guest to server surface.
2947 * Update server dirty map.
2948 */
bea60dd7 2949 server_row0 = (uint8_t *)pixman_image_get_data(vd->server);
eb8934b0
GH		 2950 server_stride = guest_stride = guest_ll =
2951 pixman_image_get_stride(vd->server);
bea60dd7
PL		 2952 cmp_bytes = MIN(VNC_DIRTY_PIXELS_PER_BIT * VNC_SERVER_FB_BYTES,
2953 server_stride);
9f64916d
GH		 2954 if (vd->guest.format != VNC_SERVER_FB_FORMAT) {
2955 int width = pixman_image_get_width(vd->server);
2956 tmpbuf = qemu_pixman_linebuf_create(VNC_SERVER_FB_FORMAT, width);
12b316d4 2957 } else {
eb8934b0
GH		 2958 int guest_bpp =
2959 PIXMAN_FORMAT_BPP(pixman_image_get_format(vd->guest.fb));
12b316d4
PL		 2960 guest_row0 = (uint8_t *)pixman_image_get_data(vd->guest.fb);
2961 guest_stride = pixman_image_get_stride(vd->guest.fb);
659c90ee 2962 guest_ll = pixman_image_get_width(vd->guest.fb) * (DIV_ROUND_UP(guest_bpp, 8));
12b316d4 2963 }
eb8934b0 2964 line_bytes = MIN(server_stride, guest_ll);
12b316d4 2965
12b316d4
PL		 2966 for (;;) {
2967 int x;
2968 uint8_t *guest_ptr, *server_ptr;
2969 unsigned long offset = find_next_bit((unsigned long *) &vd->guest.dirty,
2970 height * VNC_DIRTY_BPL(&vd->guest),
2971 y * VNC_DIRTY_BPL(&vd->guest));
2972 if (offset == height * VNC_DIRTY_BPL(&vd->guest)) {
2973 /* no more dirty bits */
2974 break;
2975 }
2976 y = offset / VNC_DIRTY_BPL(&vd->guest);
2977 x = offset % VNC_DIRTY_BPL(&vd->guest);
1fc62412 2978
12b316d4
PL		 2979 server_ptr = server_row0 + y * server_stride + x * cmp_bytes;
2980
2981 if (vd->guest.format != VNC_SERVER_FB_FORMAT) {
2982 qemu_pixman_linebuf_fill(tmpbuf, vd->guest.fb, width, 0, y);
2983 guest_ptr = (uint8_t *)pixman_image_get_data(tmpbuf);
2984 } else {
2985 guest_ptr = guest_row0 + y * guest_stride;
2986 }
2987 guest_ptr += x * cmp_bytes;
2988
2989 for (; x < DIV_ROUND_UP(width, VNC_DIRTY_PIXELS_PER_BIT);
2990 x++, guest_ptr += cmp_bytes, server_ptr += cmp_bytes) {
bea60dd7 2991 int _cmp_bytes = cmp_bytes;
12b316d4
PL		 2992 if (!test_and_clear_bit(x, vd->guest.dirty[y])) {
2993 continue;
2994 }
eb8934b0
GH		 2995 if ((x + 1) * cmp_bytes > line_bytes) {
2996 _cmp_bytes = line_bytes - x * cmp_bytes;
bea60dd7 2997 }
eb8934b0 2998 assert(_cmp_bytes >= 0);
bea60dd7 2999 if (memcmp(server_ptr, guest_ptr, _cmp_bytes) == 0) {
12b316d4
PL		 3000 continue;
3001 }
bea60dd7 3002 memcpy(server_ptr, guest_ptr, _cmp_bytes);
12b316d4
PL		 3003 if (!vd->non_adaptive) {
3004 vnc_rect_updated(vd, x * VNC_DIRTY_PIXELS_PER_BIT,
3005 y, &tv);
1fc62412 3006 }
12b316d4
PL		 3007 QTAILQ_FOREACH(vs, &vd->clients, next) {
3008 set_bit(x, vs->dirty[y]);
3009 }
3010 has_dirty++;
1fc62412 3011 }
12b316d4
PL		 3012
3013 y++;
1fc62412 3014 }
9f64916d 3015 qemu_pixman_image_unref(tmpbuf);
1fc62412
SS		 3016 return has_dirty;
3017}
3018
0f7b2864 3019static void vnc_refresh(DisplayChangeListener *dcl)
703bc68f 3020{
0f7b2864 3021 VncDisplay *vd = container_of(dcl, VncDisplay, dcl);
41b4bef6
AS		 3022 VncState *vs, *vn;
3023 int has_dirty, rects = 0;
703bc68f 3024
9d6b2070
C		 3025 if (QTAILQ_EMPTY(&vd->clients)) {
3026 update_displaychangelistener(&vd->dcl, VNC_REFRESH_INTERVAL_MAX);
3027 return;
3028 }
3029
1d0d59fe 3030 graphic_hw_update(vd->dcl.con);
703bc68f 3031
bd023f95 3032 if (vnc_trylock_display(vd)) {
0f7b2864 3033 update_displaychangelistener(&vd->dcl, VNC_REFRESH_INTERVAL_BASE);
bd023f95
CC		 3034 return;
3035 }
3036
1fc62412 3037 has_dirty = vnc_refresh_server_surface(vd);
bd023f95 3038 vnc_unlock_display(vd);
1fc62412 3039
41b4bef6 3040 QTAILQ_FOREACH_SAFE(vs, &vd->clients, next, vn) {
6af998db 3041 rects += vnc_update_client(vs, has_dirty);
6185c578 3042 /* vs might be free()ed here */
703bc68f 3043 }
bd023f95 3044
2430ffe4 3045 if (has_dirty && rects) {
0f7b2864
GH		 3046 vd->dcl.update_interval /= 2;
3047 if (vd->dcl.update_interval < VNC_REFRESH_INTERVAL_BASE) {
3048 vd->dcl.update_interval = VNC_REFRESH_INTERVAL_BASE;
3049 }
2430ffe4 3050 } else {
0f7b2864
GH		 3051 vd->dcl.update_interval += VNC_REFRESH_INTERVAL_INC;
3052 if (vd->dcl.update_interval > VNC_REFRESH_INTERVAL_MAX) {
3053 vd->dcl.update_interval = VNC_REFRESH_INTERVAL_MAX;
3054 }
703bc68f
SS		 3055 }
3056}
3057
04d2529d 3058static void vnc_connect(VncDisplay *vd, QIOChannelSocket *sioc,
2c8cf549 3059 bool skipauth, bool websocket)
3aa3eea3 3060{
fedf0d35 3061 VncState *vs = g_new0(VncState, 1);
90cd03a3 3062 bool first_client = QTAILQ_EMPTY(&vd->clients);
7d964c9d
CC		 3063 int i;
3064
ad6374c4 3065 trace_vnc_client_connect(vs, sioc);
04d2529d
DB		 3066 vs->sioc = sioc;
3067 object_ref(OBJECT(vs->sioc));
3068 vs->ioc = QIO_CHANNEL(sioc);
3069 object_ref(OBJECT(vs->ioc));
d616ccc5 3070 vs->vd = vd;
7e7e2ebc 3071
04d2529d
DB		 3072 buffer_init(&vs->input, "vnc-input/%p", sioc);
3073 buffer_init(&vs->output, "vnc-output/%p", sioc);
04d2529d 3074 buffer_init(&vs->jobs_buffer, "vnc-jobs_buffer/%p", sioc);
543b9580 3075
04d2529d
DB		 3076 buffer_init(&vs->tight.tight, "vnc-tight/%p", sioc);
3077 buffer_init(&vs->tight.zlib, "vnc-tight-zlib/%p", sioc);
3078 buffer_init(&vs->tight.gradient, "vnc-tight-gradient/%p", sioc);
543b9580 3079#ifdef CONFIG_VNC_JPEG
04d2529d 3080 buffer_init(&vs->tight.jpeg, "vnc-tight-jpeg/%p", sioc);
543b9580
GH		 3081#endif
3082#ifdef CONFIG_VNC_PNG
04d2529d 3083 buffer_init(&vs->tight.png, "vnc-tight-png/%p", sioc);
543b9580 3084#endif
04d2529d
DB		 3085 buffer_init(&vs->zlib.zlib, "vnc-zlib/%p", sioc);
3086 buffer_init(&vs->zrle.zrle, "vnc-zrle/%p", sioc);
3087 buffer_init(&vs->zrle.fb, "vnc-zrle-fb/%p", sioc);
3088 buffer_init(&vs->zrle.zlib, "vnc-zrle-zlib/%p", sioc);
543b9580 3089
7e7e2ebc
DB		 3090 if (skipauth) {
3091 vs->auth = VNC_AUTH_NONE;
7e7e2ebc 3092 vs->subauth = VNC_AUTH_INVALID;
7e7e2ebc 3093 } else {
f9148c8a
DB		 3094 if (websocket) {
3095 vs->auth = vd->ws_auth;
3096 vs->subauth = VNC_AUTH_INVALID;
3097 } else {
3098 vs->auth = vd->auth;
3099 vs->subauth = vd->subauth;
3100 }
7e7e2ebc 3101 }
04d2529d
DB		 3102 VNC_DEBUG("Client sioc=%p ws=%d auth=%d subauth=%d\n",
3103 sioc, websocket, vs->auth, vs->subauth);
7e7e2ebc 3104
7267c094 3105 vs->lossy_rect = g_malloc0(VNC_STAT_ROWS * sizeof (*vs->lossy_rect));
7d964c9d 3106 for (i = 0; i < VNC_STAT_ROWS; ++i) {
fedf0d35 3107 vs->lossy_rect[i] = g_new0(uint8_t, VNC_STAT_COLS);
7d964c9d 3108 }
753b4053 3109
04d2529d 3110 VNC_DEBUG("New client on socket %p\n", vs->sioc);
0f7b2864 3111 update_displaychangelistener(&vd->dcl, VNC_REFRESH_INTERVAL_BASE);
04d2529d 3112 qio_channel_set_blocking(vs->ioc, false, NULL);
a75d6f07
BC		 3113 if (vs->ioc_tag) {
3114 g_source_remove(vs->ioc_tag);
3115 }
7536ee4b
TH		 3116 if (websocket) {
3117 vs->websocket = 1;
38e5756a 3118 if (vd->tlscreds) {
04d2529d
DB		 3119 vs->ioc_tag = qio_channel_add_watch(
3120 vs->ioc, G_IO_IN, vncws_tls_handshake_io, vs, NULL);
3e305e4a 3121 } else {
04d2529d
DB		 3122 vs->ioc_tag = qio_channel_add_watch(
3123 vs->ioc, G_IO_IN, vncws_handshake_io, vs, NULL);
0057a0d5 3124 }
04d2529d
DB		 3125 } else {
3126 vs->ioc_tag = qio_channel_add_watch(
3127 vs->ioc, G_IO_IN, vnc_client_io, vs, NULL);
7536ee4b 3128 }
753b4053 3129
4a80dba3 3130 vnc_client_cache_addr(vs);
fb6ba0d5 3131 vnc_qmp_event(vs, QAPI_EVENT_VNC_CONNECTED);
8cf36489 3132 vnc_set_share_mode(vs, VNC_SHARE_MODE_CONNECTING);
4a80dba3 3133
753b4053
AL		 3134 vs->last_x = -1;
3135 vs->last_y = -1;
3136
3137 vs->as.freq = 44100;
3138 vs->as.nchannels = 2;
3139 vs->as.fmt = AUD_FMT_S16;
3140 vs->as.endianness = 0;
3141
bd023f95 3142 qemu_mutex_init(&vs->output_mutex);
175b2a6e 3143 vs->bh = qemu_bh_new(vnc_jobs_bh, vs);
bd023f95 3144
e5f34cdd 3145 QTAILQ_INSERT_TAIL(&vd->clients, vs, next);
c7628bff
GH		 3146 if (first_client) {
3147 vnc_update_server_surface(vd);
3148 }
1fc62412 3149
1d0d59fe 3150 graphic_hw_update(vd->dcl.con);
1fc62412 3151
90cd03a3 3152 if (!vs->websocket) {
dbee9897 3153 vnc_start_protocol(vs);
90cd03a3
DB		 3154 }
3155
3156 if (vd->num_connecting > vd->connections_limit) {
3157 QTAILQ_FOREACH(vs, &vd->clients, next) {
3158 if (vs->share_mode == VNC_SHARE_MODE_CONNECTING) {
3159 vnc_disconnect_start(vs);
3160 return;
3161 }
3162 }
3163 }
3164}
3165
dbee9897 3166void vnc_start_protocol(VncState *vs)
90cd03a3 3167{
3aa3eea3
AZ		 3168 vnc_write(vs, "RFB 003.008\n", 12);
3169 vnc_flush(vs);
3170 vnc_read_when(vs, protocol_version, 12);
753b4053 3171
37c34d9d
AL		 3172 vs->mouse_mode_notifier.notify = check_pointer_type_change;
3173 qemu_add_mouse_mode_change_notifier(&vs->mouse_mode_notifier);
3aa3eea3
AZ		 3174}
3175
13e1d0e7
DB		 3176static void vnc_listen_io(QIONetListener *listener,
3177 QIOChannelSocket *cioc,
3178 void *opaque)
24236869 3179{
bf01c179 3180 VncDisplay *vd = opaque;
13e1d0e7 3181 bool isWebsock = listener == vd->wslistener;
7536ee4b 3182
13e1d0e7
DB		 3183 qio_channel_set_name(QIO_CHANNEL(cioc),
3184 isWebsock ? "vnc-ws-server" : "vnc-server");
3185 qio_channel_set_delay(QIO_CHANNEL(cioc), false);
3186 vnc_connect(vd, cioc, false, isWebsock);
7536ee4b 3187}
7536ee4b 3188
7c20b4a3 3189static const DisplayChangeListenerOps dcl_ops = {
34da30af
BH		 3190 .dpy_name = "vnc",
3191 .dpy_refresh = vnc_refresh,
34da30af
BH		 3192 .dpy_gfx_update = vnc_dpy_update,
3193 .dpy_gfx_switch = vnc_dpy_switch,
3194 .dpy_gfx_check_format = qemu_pixman_check_format,
3195 .dpy_mouse_set = vnc_mouse_set,
3196 .dpy_cursor_define = vnc_dpy_cursor_define,
7c20b4a3
GH		 3197};
3198
14f7143e 3199void vnc_display_init(const char *id)
24236869 3200{
bf01c179 3201 VncDisplay *vd;
4db14629
GH		 3202
3203 if (vnc_display_find(id) != NULL) {
3204 return;
3205 }
bf01c179 3206 vd = g_malloc0(sizeof(*vd));
24236869 3207
bf01c179
DB		 3208 vd->id = strdup(id);
3209 QTAILQ_INSERT_TAIL(&vnc_displays, vd, next);
24236869 3210
bf01c179
DB		 3211 QTAILQ_INIT(&vd->clients);
3212 vd->expires = TIME_MAX;
24236869 3213
40066175
GH		 3214 if (keyboard_layout) {
3215 trace_vnc_key_map_init(keyboard_layout);
bf01c179 3216 vd->kbd_layout = init_keyboard_layout(name2keysym, keyboard_layout);
40066175 3217 } else {
bf01c179 3218 vd->kbd_layout = init_keyboard_layout(name2keysym, "en-us");
40066175 3219 }
24236869 3220
bf01c179 3221 if (!vd->kbd_layout) {
28a76be8 3222 exit(1);
bf01c179 3223 }
24236869 3224
bf01c179
DB		 3225 vd->share_policy = VNC_SHARE_POLICY_ALLOW_EXCLUSIVE;
3226 vd->connections_limit = 32;
12e29b16 3227
bf01c179 3228 qemu_mutex_init(&vd->mutex);
bd023f95 3229 vnc_start_worker_thread();
bd023f95 3230
bf01c179
DB		 3231 vd->dcl.ops = &dcl_ops;
3232 register_displaychangelistener(&vd->dcl);
71cab5ca
TS		 3233}
3234
6f43024c 3235
bf01c179 3236static void vnc_display_close(VncDisplay *vd)
71cab5ca 3237{
bf01c179 3238 if (!vd) {
452b4d88 3239 return;
bf01c179
DB		 3240 }
3241 vd->is_unix = false;
13e1d0e7
DB		 3242
3243 if (vd->listener) {
3244 qio_net_listener_disconnect(vd->listener);
3245 object_unref(OBJECT(vd->listener));
71cab5ca 3246 }
13e1d0e7 3247 vd->listener = NULL;
4ee74fa7 3248
13e1d0e7
DB		 3249 if (vd->wslistener) {
3250 qio_net_listener_disconnect(vd->wslistener);
3251 object_unref(OBJECT(vd->wslistener));
7536ee4b 3252 }
13e1d0e7 3253 vd->wslistener = NULL;
4ee74fa7 3254
bf01c179
DB		 3255 vd->auth = VNC_AUTH_INVALID;
3256 vd->subauth = VNC_AUTH_INVALID;
3257 if (vd->tlscreds) {
3258 object_unparent(OBJECT(vd->tlscreds));
3259 vd->tlscreds = NULL;
3e305e4a 3260 }
bf01c179
DB		 3261 g_free(vd->tlsaclname);
3262 vd->tlsaclname = NULL;
a54f0d2b
PO		 3263 if (vd->lock_key_sync) {
3264 qemu_remove_led_event_handler(vd->led);
2dc120be 3265 vd->led = NULL;
a54f0d2b 3266 }
70848515
TS		 3267}
3268
14f7143e 3269int vnc_display_password(const char *id, const char *password)
70848515 3270{
bf01c179 3271 VncDisplay *vd = vnc_display_find(id);
70848515 3272
bf01c179 3273 if (!vd) {
a6aa9d3e 3274 return -EINVAL;
7ef92331 3275 }
bf01c179 3276 if (vd->auth == VNC_AUTH_NONE) {
cf864569 3277 error_printf_unless_qmp("If you want use passwords please enable "
7ea7d36e 3278 "password auth using '-vnc ${dpy},password'.\n");
cf864569 3279 return -EINVAL;
1cd20f8b
AL		 3280 }
3281
bf01c179
DB		 3282 g_free(vd->password);
3283 vd->password = g_strdup(password);
a6aa9d3e
LC		 3284
3285 return 0;
71cab5ca
TS		 3286}
3287
14f7143e 3288int vnc_display_pw_expire(const char *id, time_t expires)
3c9405a0 3289{
bf01c179 3290 VncDisplay *vd = vnc_display_find(id);
3c9405a0 3291
bf01c179 3292 if (!vd) {
1643f2b2
GH		 3293 return -EINVAL;
3294 }
3295
bf01c179 3296 vd->expires = expires;
3c9405a0
GH		 3297 return 0;
3298}
3299
bf01c179 3300static void vnc_display_print_local_addr(VncDisplay *vd)
f92f8afe 3301{
bd269ebc 3302 SocketAddress *addr;
04d2529d 3303 Error *err = NULL;
d616ccc5 3304
13e1d0e7 3305 if (!vd->listener || !vd->listener->nsioc) {
4ee74fa7
DB		 3306 return;
3307 }
3308
13e1d0e7 3309 addr = qio_channel_socket_get_local_address(vd->listener->sioc[0], &err);
04d2529d 3310 if (!addr) {
33df7bf3 3311 return;
04d2529d
DB		 3312 }
3313
bd269ebc
MA		 3314 if (addr->type != SOCKET_ADDRESS_TYPE_INET) {
3315 qapi_free_SocketAddress(addr);
33df7bf3 3316 return;
04d2529d 3317 }
33df7bf3 3318 error_printf_unless_qmp("VNC server running on %s:%s\n",
bd269ebc
MA		 3319 addr->u.inet.host,
3320 addr->u.inet.port);
3321 qapi_free_SocketAddress(addr);
f92f8afe
AL		 3322}
3323
4db14629
GH		 3324static QemuOptsList qemu_vnc_opts = {
3325 .name = "vnc",
3326 .head = QTAILQ_HEAD_INITIALIZER(qemu_vnc_opts.head),
3327 .implied_opt_name = "vnc",
3328 .desc = {
3329 {
3330 .name = "vnc",
3331 .type = QEMU_OPT_STRING,
3332 },{
3333 .name = "websocket",
3334 .type = QEMU_OPT_STRING,
3335 },{
3e305e4a
DB		 3336 .name = "tls-creds",
3337 .type = QEMU_OPT_STRING,
3338 },{
3339 /* Deprecated in favour of tls-creds */
4db14629
GH		 3340 .name = "x509",
3341 .type = QEMU_OPT_STRING,
3342 },{
3343 .name = "share",
3344 .type = QEMU_OPT_STRING,
1d0d59fe
GH		 3345 },{
3346 .name = "display",
3347 .type = QEMU_OPT_STRING,
3348 },{
3349 .name = "head",
3350 .type = QEMU_OPT_NUMBER,
e5f34cdd
GH		 3351 },{
3352 .name = "connections",
3353 .type = QEMU_OPT_NUMBER,
88428b7a
GA		 3354 },{
3355 .name = "to",
3356 .type = QEMU_OPT_NUMBER,
3357 },{
3358 .name = "ipv4",
3359 .type = QEMU_OPT_BOOL,
3360 },{
3361 .name = "ipv6",
3362 .type = QEMU_OPT_BOOL,
4db14629
GH		 3363 },{
3364 .name = "password",
3365 .type = QEMU_OPT_BOOL,
3366 },{
3367 .name = "reverse",
3368 .type = QEMU_OPT_BOOL,
3369 },{
3370 .name = "lock-key-sync",
3371 .type = QEMU_OPT_BOOL,
c5ce8333
GH		 3372 },{
3373 .name = "key-delay-ms",
3374 .type = QEMU_OPT_NUMBER,
4db14629
GH		 3375 },{
3376 .name = "sasl",
3377 .type = QEMU_OPT_BOOL,
3378 },{
3e305e4a 3379 /* Deprecated in favour of tls-creds */
4db14629
GH		 3380 .name = "tls",
3381 .type = QEMU_OPT_BOOL,
3382 },{
3e305e4a 3383 /* Deprecated in favour of tls-creds */
4db14629 3384 .name = "x509verify",
8c7d0645 3385 .type = QEMU_OPT_STRING,
4db14629
GH		 3386 },{
3387 .name = "acl",
3388 .type = QEMU_OPT_BOOL,
3389 },{
3390 .name = "lossy",
3391 .type = QEMU_OPT_BOOL,
3392 },{
3393 .name = "non-adaptive",
3394 .type = QEMU_OPT_BOOL,
3395 },
3396 { /* end of list */ }
3397 },
3398};
3399
0dd72e15 3400
3e305e4a 3401static int
eda24e18
DB		 3402vnc_display_setup_auth(int *auth,
3403 int *subauth,
3404 QCryptoTLSCreds *tlscreds,
0dd72e15
DB		 3405 bool password,
3406 bool sasl,
3e305e4a
DB		 3407 bool websocket,
3408 Error **errp)
0dd72e15
DB		 3409{
3410 /*
3411 * We have a choice of 3 authentication options
3412 *
3413 * 1. none
3414 * 2. vnc
3415 * 3. sasl
3416 *
3417 * The channel can be run in 2 modes
3418 *
3419 * 1. clear
3420 * 2. tls
3421 *
3422 * And TLS can use 2 types of credentials
3423 *
3424 * 1. anon
3425 * 2. x509
3426 *
3427 * We thus have 9 possible logical combinations
3428 *
3429 * 1. clear + none
3430 * 2. clear + vnc
3431 * 3. clear + sasl
3432 * 4. tls + anon + none
3433 * 5. tls + anon + vnc
3434 * 6. tls + anon + sasl
3435 * 7. tls + x509 + none
3436 * 8. tls + x509 + vnc
3437 * 9. tls + x509 + sasl
3438 *
3439 * These need to be mapped into the VNC auth schemes
3440 * in an appropriate manner. In regular VNC, all the
3441 * TLS options get mapped into VNC_AUTH_VENCRYPT
3442 * sub-auth types.
f9148c8a
DB		 3443 *
3444 * In websockets, the https:// protocol already provides
3445 * TLS support, so there is no need to make use of the
3446 * VeNCrypt extension. Furthermore, websockets browser
3447 * clients could not use VeNCrypt even if they wanted to,
3448 * as they cannot control when the TLS handshake takes
3449 * place. Thus there is no option but to rely on https://,
3450 * meaning combinations 4->6 and 7->9 will be mapped to
3451 * VNC auth schemes in the same way as combos 1->3.
3452 *
3453 * Regardless of fact that we have a different mapping to
3454 * VNC auth mechs for plain VNC vs websockets VNC, the end
3455 * result has the same security characteristics.
0dd72e15 3456 */
eda24e18
DB		 3457 if (websocket || !tlscreds) {
3458 if (password) {
0dd72e15 3459 VNC_DEBUG("Initializing VNC server with password auth\n");
eda24e18
DB		 3460 *auth = VNC_AUTH_VNC;
3461 } else if (sasl) {
3462 VNC_DEBUG("Initializing VNC server with SASL auth\n");
3463 *auth = VNC_AUTH_SASL;
f9148c8a 3464 } else {
eda24e18
DB		 3465 VNC_DEBUG("Initializing VNC server with no auth\n");
3466 *auth = VNC_AUTH_NONE;
f9148c8a 3467 }
eda24e18
DB		 3468 *subauth = VNC_AUTH_INVALID;
3469 } else {
3470 bool is_x509 = object_dynamic_cast(OBJECT(tlscreds),
3471 TYPE_QCRYPTO_TLS_CREDS_X509) != NULL;
3472 bool is_anon = object_dynamic_cast(OBJECT(tlscreds),
3473 TYPE_QCRYPTO_TLS_CREDS_ANON) != NULL;
3474
3475 if (!is_x509 && !is_anon) {
3476 error_setg(errp,
3477 "Unsupported TLS cred type %s",
3478 object_get_typename(OBJECT(tlscreds)));
3479 return -1;
3480 }
3481 *auth = VNC_AUTH_VENCRYPT;
3482 if (password) {
3483 if (is_x509) {
3484 VNC_DEBUG("Initializing VNC server with x509 password auth\n");
3485 *subauth = VNC_AUTH_VENCRYPT_X509VNC;
3486 } else {
3487 VNC_DEBUG("Initializing VNC server with TLS password auth\n");
3488 *subauth = VNC_AUTH_VENCRYPT_TLSVNC;
3489 }
3490
3491 } else if (sasl) {
3492 if (is_x509) {
0dd72e15 3493 VNC_DEBUG("Initializing VNC server with x509 SASL auth\n");
eda24e18 3494 *subauth = VNC_AUTH_VENCRYPT_X509SASL;
3e305e4a 3495 } else {
eda24e18
DB		 3496 VNC_DEBUG("Initializing VNC server with TLS SASL auth\n");
3497 *subauth = VNC_AUTH_VENCRYPT_TLSSASL;
0dd72e15
DB		 3498 }
3499 } else {
eda24e18 3500 if (is_x509) {
0dd72e15 3501 VNC_DEBUG("Initializing VNC server with x509 no auth\n");
eda24e18 3502 *subauth = VNC_AUTH_VENCRYPT_X509NONE;
3e305e4a 3503 } else {
eda24e18
DB		 3504 VNC_DEBUG("Initializing VNC server with TLS no auth\n");
3505 *subauth = VNC_AUTH_VENCRYPT_TLSNONE;
0dd72e15 3506 }
f9148c8a 3507 }
0dd72e15 3508 }
3e305e4a
DB		 3509 return 0;
3510}
3511
3512
3513/*
3514 * Handle back compat with old CLI syntax by creating some
3515 * suitable QCryptoTLSCreds objects
3516 */
3517static QCryptoTLSCreds *
3518vnc_display_create_creds(bool x509,
3519 bool x509verify,
3520 const char *dir,
3521 const char *id,
3522 Error **errp)
3523{
3524 gchar *credsid = g_strdup_printf("tlsvnc%s", id);
3525 Object *parent = object_get_objects_root();
3526 Object *creds;
3527 Error *err = NULL;
3528
3529 if (x509) {
3530 creds = object_new_with_props(TYPE_QCRYPTO_TLS_CREDS_X509,
3531 parent,
3532 credsid,
3533 &err,
3534 "endpoint", "server",
3535 "dir", dir,
3536 "verify-peer", x509verify ? "yes" : "no",
3537 NULL);
3538 } else {
3539 creds = object_new_with_props(TYPE_QCRYPTO_TLS_CREDS_ANON,
3540 parent,
3541 credsid,
3542 &err,
3543 "endpoint", "server",
3544 NULL);
3545 }
3546
3547 g_free(credsid);
3548
3549 if (err) {
3550 error_propagate(errp, err);
3551 return NULL;
3552 }
3553
3554 return QCRYPTO_TLS_CREDS(creds);
0dd72e15
DB		 3555}
3556
3e305e4a 3557
275e0d61
DB		 3558static int vnc_display_get_address(const char *addrstr,
3559 bool websocket,
e5766eb4 3560 bool reverse,
275e0d61
DB		 3561 int displaynum,
3562 int to,
3563 bool has_ipv4,
3564 bool has_ipv6,
3565 bool ipv4,
3566 bool ipv6,
bd269ebc 3567 SocketAddress **retaddr,
275e0d61
DB		 3568 Error **errp)
3569{
3570 int ret = -1;
bd269ebc 3571 SocketAddress *addr = NULL;
275e0d61 3572
bd269ebc 3573 addr = g_new0(SocketAddress, 1);
275e0d61
DB		 3574
3575 if (strncmp(addrstr, "unix:", 5) == 0) {
bd269ebc
MA		 3576 addr->type = SOCKET_ADDRESS_TYPE_UNIX;
3577 addr->u.q_unix.path = g_strdup(addrstr + 5);
275e0d61
DB		 3578
3579 if (websocket) {
3580 error_setg(errp, "UNIX sockets not supported with websock");
3581 goto cleanup;
3582 }
3583
3584 if (to) {
3585 error_setg(errp, "Port range not support with UNIX socket");
3586 goto cleanup;
3587 }
3588 ret = 0;
3589 } else {
3590 const char *port;
3591 size_t hostlen;
3592 unsigned long long baseport = 0;
3593 InetSocketAddress *inet;
3594
3595 port = strrchr(addrstr, ':');
3596 if (!port) {
3597 if (websocket) {
3598 hostlen = 0;
3599 port = addrstr;
3600 } else {
3601 error_setg(errp, "no vnc port specified");
3602 goto cleanup;
3603 }
3604 } else {
3605 hostlen = port - addrstr;
3606 port++;
3607 if (*port == '\0') {
3608 error_setg(errp, "vnc port cannot be empty");
3609 goto cleanup;
3610 }
3611 }
3612
bd269ebc
MA		 3613 addr->type = SOCKET_ADDRESS_TYPE_INET;
3614 inet = &addr->u.inet;
275e0d61
DB		 3615 if (addrstr[0] == '[' && addrstr[hostlen - 1] == ']') {
3616 inet->host = g_strndup(addrstr + 1, hostlen - 2);
3617 } else {
3618 inet->host = g_strndup(addrstr, hostlen);
3619 }
3620 /* plain VNC port is just an offset, for websocket
3621 * port is absolute */
3622 if (websocket) {
3623 if (g_str_equal(addrstr, "") ||
3624 g_str_equal(addrstr, "on")) {
396f935a
DB		 3625 if (displaynum == -1) {
3626 error_setg(errp, "explicit websocket port is required");
3627 goto cleanup;
3628 }
275e0d61
DB		 3629 inet->port = g_strdup_printf(
3630 "%d", displaynum + 5700);
3631 if (to) {
3632 inet->has_to = true;
3633 inet->to = to + 5700;
3634 }
3635 } else {
3636 inet->port = g_strdup(port);
3637 }
3638 } else {
e5766eb4 3639 int offset = reverse ? 0 : 5900;
275e0d61
DB		 3640 if (parse_uint_full(port, &baseport, 10) < 0) {
3641 error_setg(errp, "can't convert to a number: %s", port);
3642 goto cleanup;
3643 }
3644 if (baseport > 65535 ||
e5766eb4 3645 baseport + offset > 65535) {
275e0d61
DB		 3646 error_setg(errp, "port %s out of range", port);
3647 goto cleanup;
3648 }
3649 inet->port = g_strdup_printf(
e5766eb4 3650 "%d", (int)baseport + offset);
275e0d61
DB		 3651
3652 if (to) {
3653 inet->has_to = true;
e5766eb4 3654 inet->to = to + offset;
275e0d61
DB		 3655 }
3656 }
3657
3658 inet->ipv4 = ipv4;
3659 inet->has_ipv4 = has_ipv4;
3660 inet->ipv6 = ipv6;
3661 inet->has_ipv6 = has_ipv6;
3662
3663 ret = baseport;
3664 }
3665
3666 *retaddr = addr;
3667
3668 cleanup:
3669 if (ret < 0) {
bd269ebc 3670 qapi_free_SocketAddress(addr);
275e0d61
DB		 3671 }
3672 return ret;
3673}
3674
9f26f325
PMD		 3675static void vnc_free_addresses(SocketAddress ***retsaddr,
3676 size_t *retnsaddr)
3677{
3678 size_t i;
3679
3680 for (i = 0; i < *retnsaddr; i++) {
3681 qapi_free_SocketAddress((*retsaddr)[i]);
3682 }
3683 g_free(*retsaddr);
3684
3685 *retsaddr = NULL;
3686 *retnsaddr = 0;
3687}
3688
275e0d61 3689static int vnc_display_get_addresses(QemuOpts *opts,
e5766eb4 3690 bool reverse,
bd269ebc 3691 SocketAddress ***retsaddr,
396f935a 3692 size_t *retnsaddr,
bd269ebc 3693 SocketAddress ***retwsaddr,
396f935a 3694 size_t *retnwsaddr,
275e0d61
DB		 3695 Error **errp)
3696{
bd269ebc
MA		 3697 SocketAddress *saddr = NULL;
3698 SocketAddress *wsaddr = NULL;
396f935a
DB		 3699 QemuOptsIter addriter;
3700 const char *addr;
275e0d61
DB		 3701 int to = qemu_opt_get_number(opts, "to", 0);
3702 bool has_ipv4 = qemu_opt_get(opts, "ipv4");
3703 bool has_ipv6 = qemu_opt_get(opts, "ipv6");
3704 bool ipv4 = qemu_opt_get_bool(opts, "ipv4", false);
3705 bool ipv6 = qemu_opt_get_bool(opts, "ipv6", false);
396f935a
DB		 3706 int displaynum = -1;
3707 int ret = -1;
275e0d61 3708
396f935a
DB		 3709 *retsaddr = NULL;
3710 *retnsaddr = 0;
3711 *retwsaddr = NULL;
3712 *retnwsaddr = 0;
275e0d61 3713
396f935a
DB		 3714 addr = qemu_opt_get(opts, "vnc");
3715 if (addr == NULL || g_str_equal(addr, "none")) {
3716 ret = 0;
3717 goto cleanup;
3718 }
3719 if (qemu_opt_get(opts, "websocket") &&
275e0d61
DB		 3720 !qcrypto_hash_supports(QCRYPTO_HASH_ALG_SHA1)) {
3721 error_setg(errp,
3722 "SHA1 hash support is required for websockets");
396f935a
DB		 3723 goto cleanup;
3724 }
3725
3726 qemu_opt_iter_init(&addriter, opts, "vnc");
3727 while ((addr = qemu_opt_iter_next(&addriter)) != NULL) {
3728 int rv;
e5766eb4 3729 rv = vnc_display_get_address(addr, false, reverse, 0, to,
396f935a
DB		 3730 has_ipv4, has_ipv6,
3731 ipv4, ipv6,
3732 &saddr, errp);
3733 if (rv < 0) {
3734 goto cleanup;
3735 }
3736 /* Historical compat - first listen address can be used
3737 * to set the default websocket port
3738 */
3739 if (displaynum == -1) {
3740 displaynum = rv;
3741 }
bd269ebc 3742 *retsaddr = g_renew(SocketAddress *, *retsaddr, *retnsaddr + 1);
396f935a 3743 (*retsaddr)[(*retnsaddr)++] = saddr;
275e0d61
DB		 3744 }
3745
396f935a
DB		 3746 /* If we had multiple primary displays, we don't do defaults
3747 * for websocket, and require explicit config instead. */
3748 if (*retnsaddr > 1) {
3749 displaynum = -1;
275e0d61 3750 }
396f935a
DB		 3751
3752 qemu_opt_iter_init(&addriter, opts, "websocket");
3753 while ((addr = qemu_opt_iter_next(&addriter)) != NULL) {
e5766eb4 3754 if (vnc_display_get_address(addr, true, reverse, displaynum, to,
275e0d61
DB		 3755 has_ipv4, has_ipv6,
3756 ipv4, ipv6,
3757 &wsaddr, errp) < 0) {
396f935a 3758 goto cleanup;
275e0d61 3759 }
396f935a
DB		 3760
3761 /* Historical compat - if only a single listen address was
3762 * provided, then this is used to set the default listen
3763 * address for websocket too
3764 */
3765 if (*retnsaddr == 1 &&
bd269ebc
MA		 3766 (*retsaddr)[0]->type == SOCKET_ADDRESS_TYPE_INET &&
3767 wsaddr->type == SOCKET_ADDRESS_TYPE_INET &&
3768 g_str_equal(wsaddr->u.inet.host, "") &&
3769 !g_str_equal((*retsaddr)[0]->u.inet.host, "")) {
3770 g_free(wsaddr->u.inet.host);
3771 wsaddr->u.inet.host = g_strdup((*retsaddr)[0]->u.inet.host);
275e0d61 3772 }
396f935a 3773
bd269ebc 3774 *retwsaddr = g_renew(SocketAddress *, *retwsaddr, *retnwsaddr + 1);
396f935a 3775 (*retwsaddr)[(*retnwsaddr)++] = wsaddr;
275e0d61 3776 }
275e0d61 3777
396f935a
DB		 3778 ret = 0;
3779 cleanup:
3780 if (ret < 0) {
9f26f325
PMD		 3781 vnc_free_addresses(retsaddr, retnsaddr);
3782 vnc_free_addresses(retwsaddr, retnwsaddr);
396f935a
DB		 3783 }
3784 return ret;
275e0d61
DB		 3785}
3786
8bd22f47 3787static int vnc_display_connect(VncDisplay *vd,
bd269ebc 3788 SocketAddress **saddr,
396f935a 3789 size_t nsaddr,
bd269ebc 3790 SocketAddress **wsaddr,
396f935a 3791 size_t nwsaddr,
8bd22f47
DB		 3792 Error **errp)
3793{
3794 /* connect to viewer */
3795 QIOChannelSocket *sioc = NULL;
396f935a 3796 if (nwsaddr != 0) {
8bd22f47
DB		 3797 error_setg(errp, "Cannot use websockets in reverse mode");
3798 return -1;
3799 }
396f935a
DB		 3800 if (nsaddr != 1) {
3801 error_setg(errp, "Expected a single address in reverse mode");
3802 return -1;
3803 }
bd269ebc
MA		 3804 /* TODO SOCKET_ADDRESS_TYPE_FD when fd has AF_UNIX */
3805 vd->is_unix = saddr[0]->type == SOCKET_ADDRESS_TYPE_UNIX;
8bd22f47
DB		 3806 sioc = qio_channel_socket_new();
3807 qio_channel_set_name(QIO_CHANNEL(sioc), "vnc-reverse");
396f935a 3808 if (qio_channel_socket_connect_sync(sioc, saddr[0], errp) < 0) {
8bd22f47
DB		 3809 return -1;
3810 }
3811 vnc_connect(vd, sioc, false, false);
3812 object_unref(OBJECT(sioc));
3813 return 0;
3814}
3815
3816
8bd22f47 3817static int vnc_display_listen(VncDisplay *vd,
bd269ebc 3818 SocketAddress **saddr,
396f935a 3819 size_t nsaddr,
bd269ebc 3820 SocketAddress **wsaddr,
396f935a 3821 size_t nwsaddr,
8bd22f47
DB		 3822 Error **errp)
3823{
396f935a 3824 size_t i;
8bd22f47 3825
13e1d0e7
DB		 3826 if (nsaddr) {
3827 vd->listener = qio_net_listener_new();
3828 qio_net_listener_set_name(vd->listener, "vnc-listen");
3829 for (i = 0; i < nsaddr; i++) {
3830 if (qio_net_listener_open_sync(vd->listener,
3831 saddr[i],
3832 errp) < 0) {
3833 return -1;
3834 }
396f935a 3835 }
13e1d0e7
DB		 3836
3837 qio_net_listener_set_client_func(vd->listener,
3838 vnc_listen_io, vd, NULL);
8bd22f47 3839 }
13e1d0e7
DB		 3840
3841 if (nwsaddr) {
3842 vd->wslistener = qio_net_listener_new();
3843 qio_net_listener_set_name(vd->wslistener, "vnc-ws-listen");
3844 for (i = 0; i < nwsaddr; i++) {
3845 if (qio_net_listener_open_sync(vd->wslistener,
3846 wsaddr[i],
3847 errp) < 0) {
3848 return -1;
3849 }
396f935a 3850 }
13e1d0e7
DB		 3851
3852 qio_net_listener_set_client_func(vd->wslistener,
3853 vnc_listen_io, vd, NULL);
8bd22f47
DB		 3854 }
3855
3856 return 0;
3857}
3858
3859
4db14629 3860void vnc_display_open(const char *id, Error **errp)
71cab5ca 3861{
bf01c179 3862 VncDisplay *vd = vnc_display_find(id);
4db14629 3863 QemuOpts *opts = qemu_opts_find(&qemu_vnc_opts, id);
bd269ebc 3864 SocketAddress **saddr = NULL, **wsaddr = NULL;
396f935a 3865 size_t nsaddr, nwsaddr;
e2a11d9d 3866 const char *share, *device_id;
1d0d59fe 3867 QemuConsole *con;
a2c72de0
GA		 3868 bool password = false;
3869 bool reverse = false;
3e305e4a 3870 const char *credid;
a2c72de0 3871 bool sasl = false;
d169f04b 3872#ifdef CONFIG_VNC_SASL
2f9606b3
AL		 3873 int saslErr;
3874#endif
76655d6d 3875 int acl = 0;
3a0558b5 3876 int lock_key_sync = 1;
c5ce8333 3877 int key_delay_ms;
71cab5ca 3878
bf01c179 3879 if (!vd) {
2d55f0e8
PB		 3880 error_setg(errp, "VNC display not active");
3881 return;
3882 }
bf01c179 3883 vnc_display_close(vd);
24236869 3884
4db14629
GH		 3885 if (!opts) {
3886 return;
3887 }
274c3b52 3888
e5766eb4
GH		 3889 reverse = qemu_opt_get_bool(opts, "reverse", false);
3890 if (vnc_display_get_addresses(opts, reverse, &saddr, &nsaddr,
396f935a 3891 &wsaddr, &nwsaddr, errp) < 0) {
e5560329 3892 goto fail;
e2a11d9d 3893 }
e5560329 3894
4db14629 3895 password = qemu_opt_get_bool(opts, "password", false);
800567a6
DB		 3896 if (password) {
3897 if (fips_get_state()) {
3898 error_setg(errp,
3899 "VNC password auth disabled due to FIPS mode, "
3900 "consider using the VeNCrypt or SASL authentication "
3901 "methods as an alternative");
3902 goto fail;
3903 }
3904 if (!qcrypto_cipher_supports(
f844836d 3905 QCRYPTO_CIPHER_ALG_DES_RFB, QCRYPTO_CIPHER_MODE_ECB)) {
800567a6
DB		 3906 error_setg(errp,
3907 "Cipher backend does not support DES RFB algorithm");
3908 goto fail;
3909 }
4db14629
GH		 3910 }
3911
4db14629 3912 lock_key_sync = qemu_opt_get_bool(opts, "lock-key-sync", true);
d3b0db6d 3913 key_delay_ms = qemu_opt_get_number(opts, "key-delay-ms", 10);
4db14629 3914 sasl = qemu_opt_get_bool(opts, "sasl", false);
d169f04b
DB		 3915#ifndef CONFIG_VNC_SASL
3916 if (sasl) {
3917 error_setg(errp, "VNC SASL auth requires cyrus-sasl support");
3918 goto fail;
3919 }
3920#endif /* CONFIG_VNC_SASL */
3e305e4a
DB		 3921 credid = qemu_opt_get(opts, "tls-creds");
3922 if (credid) {
3923 Object *creds;
3924 if (qemu_opt_get(opts, "tls") ||
3925 qemu_opt_get(opts, "x509") ||
3926 qemu_opt_get(opts, "x509verify")) {
3927 error_setg(errp,
c62e90af 3928 "'tls-creds' parameter is mutually exclusive with "
3e305e4a 3929 "'tls', 'x509' and 'x509verify' parameters");
4db14629
GH		 3930 goto fail;
3931 }
3e305e4a
DB		 3932
3933 creds = object_resolve_path_component(
3934 object_get_objects_root(), credid);
3935 if (!creds) {
3936 error_setg(errp, "No TLS credentials with id '%s'",
3937 credid);
3938 goto fail;
3939 }
bf01c179 3940 vd->tlscreds = (QCryptoTLSCreds *)
3e305e4a
DB		 3941 object_dynamic_cast(creds,
3942 TYPE_QCRYPTO_TLS_CREDS);
bf01c179 3943 if (!vd->tlscreds) {
3e305e4a
DB		 3944 error_setg(errp, "Object with id '%s' is not TLS credentials",
3945 credid);
3946 goto fail;
3947 }
bf01c179 3948 object_ref(OBJECT(vd->tlscreds));
3e305e4a 3949
bf01c179 3950 if (vd->tlscreds->endpoint != QCRYPTO_TLS_CREDS_ENDPOINT_SERVER) {
3e305e4a
DB		 3951 error_setg(errp,
3952 "Expecting TLS credentials with a server endpoint");
3953 goto fail;
3954 }
3955 } else {
3956 const char *path;
3957 bool tls = false, x509 = false, x509verify = false;
3958 tls = qemu_opt_get_bool(opts, "tls", false);
3959 if (tls) {
3960 path = qemu_opt_get(opts, "x509");
3961
3962 if (path) {
3963 x509 = true;
3964 } else {
3965 path = qemu_opt_get(opts, "x509verify");
3966 if (path) {
3967 x509 = true;
3968 x509verify = true;
3969 }
3970 }
bf01c179 3971 vd->tlscreds = vnc_display_create_creds(x509,
3e305e4a
DB		 3972 x509verify,
3973 path,
bf01c179 3974 vd->id,
3e305e4a 3975 errp);
bf01c179 3976 if (!vd->tlscreds) {
3e305e4a
DB		 3977 goto fail;
3978 }
3979 }
4db14629 3980 }
4db14629 3981 acl = qemu_opt_get_bool(opts, "acl", false);
4db14629
GH		 3982
3983 share = qemu_opt_get(opts, "share");
3984 if (share) {
3985 if (strcmp(share, "ignore") == 0) {
bf01c179 3986 vd->share_policy = VNC_SHARE_POLICY_IGNORE;
4db14629 3987 } else if (strcmp(share, "allow-exclusive") == 0) {
bf01c179 3988 vd->share_policy = VNC_SHARE_POLICY_ALLOW_EXCLUSIVE;
4db14629 3989 } else if (strcmp(share, "force-shared") == 0) {
bf01c179 3990 vd->share_policy = VNC_SHARE_POLICY_FORCE_SHARED;
4db14629
GH		 3991 } else {
3992 error_setg(errp, "unknown vnc share= option");
3993 goto fail;
3994 }
3995 } else {
bf01c179 3996 vd->share_policy = VNC_SHARE_POLICY_ALLOW_EXCLUSIVE;
4db14629 3997 }
bf01c179 3998 vd->connections_limit = qemu_opt_get_number(opts, "connections", 32);
4db14629 3999
4db14629 4000#ifdef CONFIG_VNC_JPEG
bf01c179 4001 vd->lossy = qemu_opt_get_bool(opts, "lossy", false);
4db14629 4002#endif
bf01c179 4003 vd->non_adaptive = qemu_opt_get_bool(opts, "non-adaptive", false);
e22492d3
PL		 4004 /* adaptive updates are only used with tight encoding and
4005 * if lossy updates are enabled so we can disable all the
4006 * calculations otherwise */
bf01c179
DB		 4007 if (!vd->lossy) {
4008 vd->non_adaptive = true;
e22492d3
PL		 4009 }
4010
3e305e4a 4011 if (acl) {
bf01c179
DB		 4012 if (strcmp(vd->id, "default") == 0) {
4013 vd->tlsaclname = g_strdup("vnc.x509dname");
c8496408 4014 } else {
bf01c179 4015 vd->tlsaclname = g_strdup_printf("vnc.%s.x509dname", vd->id);
c8496408 4016 }
bf01c179 4017 qemu_acl_init(vd->tlsaclname);
2cc45228 4018 }
76655d6d
AL		 4019#ifdef CONFIG_VNC_SASL
4020 if (acl && sasl) {
c8496408
GH		 4021 char *aclname;
4022
bf01c179 4023 if (strcmp(vd->id, "default") == 0) {
c8496408
GH		 4024 aclname = g_strdup("vnc.username");
4025 } else {
bf01c179 4026 aclname = g_strdup_printf("vnc.%s.username", vd->id);
c8496408 4027 }
bf01c179 4028 vd->sasl.acl = qemu_acl_init(aclname);
c8496408 4029 g_free(aclname);
76655d6d
AL		 4030 }
4031#endif
4032
eda24e18
DB		 4033 if (vnc_display_setup_auth(&vd->auth, &vd->subauth,
4034 vd->tlscreds, password,
4035 sasl, false, errp) < 0) {
4036 goto fail;
4037 }
7364dbda 4038 trace_vnc_auth_init(vd, 0, vd->auth, vd->subauth);
eda24e18
DB		 4039
4040 if (vnc_display_setup_auth(&vd->ws_auth, &vd->ws_subauth,
4041 vd->tlscreds, password,
4042 sasl, true, errp) < 0) {
3e305e4a
DB		 4043 goto fail;
4044 }
7364dbda 4045 trace_vnc_auth_init(vd, 1, vd->ws_auth, vd->ws_subauth);
24236869 4046
2f9606b3
AL		 4047#ifdef CONFIG_VNC_SASL
4048 if ((saslErr = sasl_server_init(NULL, "qemu")) != SASL_OK) {
2d55f0e8
PB		 4049 error_setg(errp, "Failed to initialize SASL auth: %s",
4050 sasl_errstring(saslErr, NULL, NULL));
1ce52c78 4051 goto fail;
2f9606b3
AL		 4052 }
4053#endif
bf01c179 4054 vd->lock_key_sync = lock_key_sync;
a54f0d2b
PO		 4055 if (lock_key_sync) {
4056 vd->led = qemu_add_led_event_handler(kbd_leds, vd);
4057 }
4058 vd->ledstate = 0;
bf01c179 4059 vd->key_delay_ms = key_delay_ms;
2f9606b3 4060
1d0d59fe
GH		 4061 device_id = qemu_opt_get(opts, "display");
4062 if (device_id) {
1d0d59fe 4063 int head = qemu_opt_get_number(opts, "head", 0);
f2c1d54c 4064 Error *err = NULL;
1d0d59fe 4065
f2c1d54c
GH		 4066 con = qemu_console_lookup_by_device_name(device_id, head, &err);
4067 if (err) {
4068 error_propagate(errp, err);
1d0d59fe
GH		 4069 goto fail;
4070 }
4071 } else {
4072 con = NULL;
4073 }
4074
bf01c179
DB		 4075 if (con != vd->dcl.con) {
4076 unregister_displaychangelistener(&vd->dcl);
4077 vd->dcl.con = con;
4078 register_displaychangelistener(&vd->dcl);
1d0d59fe
GH		 4079 }
4080
fa03cb7f
MAL		 4081 if (saddr == NULL) {
4082 goto cleanup;
4083 }
4084
3aa3eea3 4085 if (reverse) {
396f935a 4086 if (vnc_display_connect(vd, saddr, nsaddr, wsaddr, nwsaddr, errp) < 0) {
007fcd3e
PB		 4087 goto fail;
4088 }
9712ecaf 4089 } else {
396f935a 4090 if (vnc_display_listen(vd, saddr, nsaddr, wsaddr, nwsaddr, errp) < 0) {
e0d03b8c
DB		 4091 goto fail;
4092 }
24236869 4093 }
e0d03b8c 4094
275e0d61 4095 if (qemu_opt_get(opts, "to")) {
bf01c179 4096 vnc_display_print_local_addr(vd);
33df7bf3
PB		 4097 }
4098
396f935a 4099 cleanup:
9f26f325
PMD		 4100 vnc_free_addresses(&saddr, &nsaddr);
4101 vnc_free_addresses(&wsaddr, &nwsaddr);
2d55f0e8 4102 return;
1ce52c78
PB		 4103
4104fail:
4ee74fa7 4105 vnc_display_close(vd);
396f935a 4106 goto cleanup;
24236869 4107}
13661089 4108
14f7143e 4109void vnc_display_add_client(const char *id, int csock, bool skipauth)
13661089 4110{
bf01c179 4111 VncDisplay *vd = vnc_display_find(id);
04d2529d 4112 QIOChannelSocket *sioc;
13661089 4113
bf01c179 4114 if (!vd) {
d616ccc5
GH		 4115 return;
4116 }
04d2529d
DB		 4117
4118 sioc = qio_channel_socket_new_fd(csock, NULL);
4119 if (sioc) {
10bcfe58 4120 qio_channel_set_name(QIO_CHANNEL(sioc), "vnc-server");
bf01c179 4121 vnc_connect(vd, sioc, skipauth, false);
04d2529d
DB		 4122 object_unref(OBJECT(sioc));
4123 }
13661089 4124}
4db14629 4125
9634f4e3 4126static void vnc_auto_assign_id(QemuOptsList *olist, QemuOpts *opts)
2779672f
GA		 4127{
4128 int i = 2;
4129 char *id;
4130
4131 id = g_strdup("default");
4132 while (qemu_opts_find(olist, id)) {
4133 g_free(id);
4134 id = g_strdup_printf("vnc%d", i++);
4135 }
4136 qemu_opts_set_id(opts, id);
4137}
4138
70b94331 4139QemuOpts *vnc_parse(const char *str, Error **errp)
4db14629 4140{
4db14629 4141 QemuOptsList *olist = qemu_find_opts("vnc");
70b94331 4142 QemuOpts *opts = qemu_opts_parse(olist, str, true, errp);
81607cbf 4143 const char *id;
4db14629 4144
81607cbf
GA		 4145 if (!opts) {
4146 return NULL;
4147 }
4148
4149 id = qemu_opts_id(opts);
4db14629
GH		 4150 if (!id) {
4151 /* auto-assign id if not present */
2779672f 4152 vnc_auto_assign_id(olist, opts);
4db14629 4153 }
9634f4e3
GH		 4154 return opts;
4155}
4156
28d0de7a 4157int vnc_init_func(void *opaque, QemuOpts *opts, Error **errp)
9634f4e3
GH		 4158{
4159 Error *local_err = NULL;
4160 char *id = (char *)qemu_opts_id(opts);
4db14629 4161
9634f4e3 4162 assert(id);
4db14629
GH		 4163 vnc_display_init(id);
4164 vnc_display_open(id, &local_err);
4165 if (local_err != NULL) {
c29b77f9 4166 error_reportf_err(local_err, "Failed to start VNC server: ");
4db14629
GH		 4167 exit(1);
4168 }
4169 return 0;
4170}
4171
4172static void vnc_register_config(void)
4173{
4174 qemu_add_opts(&qemu_vnc_opts);
4175}
34294e2f 4176opts_init(vnc_register_config);
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