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vnc: auth reject cleanup
[mirror_qemu.git] / ui / vnc.c
CommitLineData
7d510b8c
FB		 1/*
2 * QEMU VNC display driver
5fafdf24 3 *
7d510b8c
FB		 4 * Copyright (C) 2006 Anthony Liguori <anthony@codemonkey.ws>
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
19a490bf 27#include "vnc.h"
bd023f95 28#include "vnc-jobs.h"
87ecb68b 29#include "sysemu.h"
6ca957f0 30#include "qemu_socket.h"
87ecb68b 31#include "qemu-timer.h"
76655d6d 32#include "acl.h"
d96fd29c 33#include "qemu-objects.h"
24236869 34
2430ffe4
SS		 35#define VNC_REFRESH_INTERVAL_BASE 30
36#define VNC_REFRESH_INTERVAL_INC 50
37#define VNC_REFRESH_INTERVAL_MAX 2000
24236869
FB		 38
39#include "vnc_keysym.h"
70848515
TS		 40#include "d3des.h"
41
90a1e3c0
AL		 42#define count_bits(c, v) { \
43 for (c = 0; v; v >>= 1) \
44 { \
45 c += v & 1; \
46 } \
47}
8d5d2d4c 48
753b4053 49static VncDisplay *vnc_display; /* needed for info vnc */
7d957bd8 50static DisplayChangeListener *dcl;
a9ce8590 51
d467b679
GH		 52static int vnc_cursor_define(VncState *vs);
53
1ff7df1a
AL		 54static char *addr_to_string(const char *format,
55 struct sockaddr_storage *sa,
56 socklen_t salen) {
57 char *addr;
58 char host[NI_MAXHOST];
59 char serv[NI_MAXSERV];
60 int err;
457772e6 61 size_t addrlen;
1ff7df1a
AL		 62
63 if ((err = getnameinfo((struct sockaddr *)sa, salen,
64 host, sizeof(host),
65 serv, sizeof(serv),
66 NI_NUMERICHOST | NI_NUMERICSERV)) != 0) {
67 VNC_DEBUG("Cannot resolve address %d: %s\n",
68 err, gai_strerror(err));
69 return NULL;
70 }
71
457772e6 72 /* Enough for the existing format + the 2 vars we're
f425c278 73 * substituting in. */
457772e6
AL		 74 addrlen = strlen(format) + strlen(host) + strlen(serv);
75 addr = qemu_malloc(addrlen + 1);
76 snprintf(addr, addrlen, format, host, serv);
77 addr[addrlen] = '\0';
1ff7df1a
AL		 78
79 return addr;
80}
81
2f9606b3
AL		 82
83char *vnc_socket_local_addr(const char *format, int fd) {
1ff7df1a
AL		 84 struct sockaddr_storage sa;
85 socklen_t salen;
86
87 salen = sizeof(sa);
88 if (getsockname(fd, (struct sockaddr*)&sa, &salen) < 0)
89 return NULL;
90
91 return addr_to_string(format, &sa, salen);
92}
93
2f9606b3 94char *vnc_socket_remote_addr(const char *format, int fd) {
1ff7df1a
AL		 95 struct sockaddr_storage sa;
96 socklen_t salen;
97
98 salen = sizeof(sa);
99 if (getpeername(fd, (struct sockaddr*)&sa, &salen) < 0)
100 return NULL;
101
102 return addr_to_string(format, &sa, salen);
103}
104
d96fd29c
LC		 105static int put_addr_qdict(QDict *qdict, struct sockaddr_storage *sa,
106 socklen_t salen)
107{
108 char host[NI_MAXHOST];
109 char serv[NI_MAXSERV];
110 int err;
111
112 if ((err = getnameinfo((struct sockaddr *)sa, salen,
113 host, sizeof(host),
114 serv, sizeof(serv),
115 NI_NUMERICHOST | NI_NUMERICSERV)) != 0) {
116 VNC_DEBUG("Cannot resolve address %d: %s\n",
117 err, gai_strerror(err));
118 return -1;
119 }
120
121 qdict_put(qdict, "host", qstring_from_str(host));
122 qdict_put(qdict, "service", qstring_from_str(serv));
dc0d4efc 123 qdict_put(qdict, "family",qstring_from_str(inet_strfamily(sa->ss_family)));
d96fd29c
LC		 124
125 return 0;
126}
127
a7789382 128static int vnc_server_addr_put(QDict *qdict, int fd)
d96fd29c
LC		 129{
130 struct sockaddr_storage sa;
131 socklen_t salen;
132
133 salen = sizeof(sa);
134 if (getsockname(fd, (struct sockaddr*)&sa, &salen) < 0) {
135 return -1;
136 }
137
138 return put_addr_qdict(qdict, &sa, salen);
139}
140
141static int vnc_qdict_remote_addr(QDict *qdict, int fd)
142{
143 struct sockaddr_storage sa;
144 socklen_t salen;
145
146 salen = sizeof(sa);
147 if (getpeername(fd, (struct sockaddr*)&sa, &salen) < 0) {
148 return -1;
149 }
150
151 return put_addr_qdict(qdict, &sa, salen);
152}
153
1ff7df1a
AL		 154static const char *vnc_auth_name(VncDisplay *vd) {
155 switch (vd->auth) {
156 case VNC_AUTH_INVALID:
157 return "invalid";
158 case VNC_AUTH_NONE:
159 return "none";
160 case VNC_AUTH_VNC:
161 return "vnc";
162 case VNC_AUTH_RA2:
163 return "ra2";
164 case VNC_AUTH_RA2NE:
165 return "ra2ne";
166 case VNC_AUTH_TIGHT:
167 return "tight";
168 case VNC_AUTH_ULTRA:
169 return "ultra";
170 case VNC_AUTH_TLS:
171 return "tls";
172 case VNC_AUTH_VENCRYPT:
173#ifdef CONFIG_VNC_TLS
174 switch (vd->subauth) {
175 case VNC_AUTH_VENCRYPT_PLAIN:
176 return "vencrypt+plain";
177 case VNC_AUTH_VENCRYPT_TLSNONE:
178 return "vencrypt+tls+none";
179 case VNC_AUTH_VENCRYPT_TLSVNC:
180 return "vencrypt+tls+vnc";
181 case VNC_AUTH_VENCRYPT_TLSPLAIN:
182 return "vencrypt+tls+plain";
183 case VNC_AUTH_VENCRYPT_X509NONE:
184 return "vencrypt+x509+none";
185 case VNC_AUTH_VENCRYPT_X509VNC:
186 return "vencrypt+x509+vnc";
187 case VNC_AUTH_VENCRYPT_X509PLAIN:
188 return "vencrypt+x509+plain";
28a76be8
AL		 189 case VNC_AUTH_VENCRYPT_TLSSASL:
190 return "vencrypt+tls+sasl";
191 case VNC_AUTH_VENCRYPT_X509SASL:
192 return "vencrypt+x509+sasl";
1ff7df1a
AL		 193 default:
194 return "vencrypt";
195 }
196#else
197 return "vencrypt";
198#endif
2f9606b3 199 case VNC_AUTH_SASL:
28a76be8 200 return "sasl";
1ff7df1a
AL		 201 }
202 return "unknown";
203}
204
a7789382
LC		 205static int vnc_server_info_put(QDict *qdict)
206{
207 if (vnc_server_addr_put(qdict, vnc_display->lsock) < 0) {
208 return -1;
209 }
210
211 qdict_put(qdict, "auth", qstring_from_str(vnc_auth_name(vnc_display)));
212 return 0;
213}
214
4a80dba3 215static void vnc_client_cache_auth(VncState *client)
1ff7df1a 216{
2ded6ad7 217#if defined(CONFIG_VNC_TLS) || defined(CONFIG_VNC_SASL)
d96fd29c 218 QDict *qdict;
2ded6ad7 219#endif
1ff7df1a 220
4a80dba3
LC		 221 if (!client->info) {
222 return;
d96fd29c 223 }
1263b7d6 224
2ded6ad7 225#if defined(CONFIG_VNC_TLS) || defined(CONFIG_VNC_SASL)
4a80dba3 226 qdict = qobject_to_qdict(client->info);
2ded6ad7 227#endif
4a80dba3 228
1263b7d6
AL		 229#ifdef CONFIG_VNC_TLS
230 if (client->tls.session &&
d96fd29c
LC		 231 client->tls.dname) {
232 qdict_put(qdict, "x509_dname", qstring_from_str(client->tls.dname));
233 }
1263b7d6
AL		 234#endif
235#ifdef CONFIG_VNC_SASL
236 if (client->sasl.conn &&
d96fd29c 237 client->sasl.username) {
76825067
LC		 238 qdict_put(qdict, "sasl_username",
239 qstring_from_str(client->sasl.username));
d96fd29c 240 }
1263b7d6 241#endif
4a80dba3 242}
d96fd29c 243
4a80dba3
LC		 244static void vnc_client_cache_addr(VncState *client)
245{
246 QDict *qdict;
247
248 qdict = qdict_new();
249 if (vnc_qdict_remote_addr(qdict, client->csock) < 0) {
250 QDECREF(qdict);
251 /* XXX: how to report the error? */
252 return;
253 }
254
255 client->info = QOBJECT(qdict);
1ff7df1a
AL		 256}
257
586153d9
LC		 258static void vnc_qmp_event(VncState *vs, MonitorEvent event)
259{
260 QDict *server;
261 QObject *data;
262
263 if (!vs->info) {
264 return;
265 }
266
267 server = qdict_new();
268 if (vnc_server_info_put(server) < 0) {
269 QDECREF(server);
270 return;
271 }
272
273 data = qobject_from_jsonf("{ 'client': %p, 'server': %p }",
274 vs->info, QOBJECT(server));
275
276 monitor_protocol_event(event, data);
277
278 qobject_incref(vs->info);
279 qobject_decref(data);
280}
281
d96fd29c 282static void info_vnc_iter(QObject *obj, void *opaque)
a9ce8590 283{
d96fd29c
LC		 284 QDict *client;
285 Monitor *mon = opaque;
286
287 client = qobject_to_qdict(obj);
288 monitor_printf(mon, "Client:\n");
289 monitor_printf(mon, " address: %s:%s\n",
290 qdict_get_str(client, "host"),
291 qdict_get_str(client, "service"));
292
293#ifdef CONFIG_VNC_TLS
294 monitor_printf(mon, " x509_dname: %s\n",
295 qdict_haskey(client, "x509_dname") ?
296 qdict_get_str(client, "x509_dname") : "none");
297#endif
298#ifdef CONFIG_VNC_SASL
299 monitor_printf(mon, " username: %s\n",
76825067
LC		 300 qdict_haskey(client, "sasl_username") ?
301 qdict_get_str(client, "sasl_username") : "none");
d96fd29c
LC		 302#endif
303}
304
305void do_info_vnc_print(Monitor *mon, const QObject *data)
306{
307 QDict *server;
308 QList *clients;
309
310 server = qobject_to_qdict(data);
8950a950 311 if (qdict_get_bool(server, "enabled") == 0) {
1ff7df1a 312 monitor_printf(mon, "Server: disabled\n");
d96fd29c
LC		 313 return;
314 }
1ff7df1a 315
d96fd29c
LC		 316 monitor_printf(mon, "Server:\n");
317 monitor_printf(mon, " address: %s:%s\n",
318 qdict_get_str(server, "host"),
319 qdict_get_str(server, "service"));
a7789382 320 monitor_printf(mon, " auth: %s\n", qdict_get_str(server, "auth"));
d96fd29c
LC		 321
322 clients = qdict_get_qlist(server, "clients");
323 if (qlist_empty(clients)) {
324 monitor_printf(mon, "Client: none\n");
325 } else {
326 qlist_iter(clients, info_vnc_iter, mon);
327 }
328}
1ff7df1a 329
d96fd29c
LC		 330void do_info_vnc(Monitor *mon, QObject **ret_data)
331{
332 if (vnc_display == NULL || vnc_display->display == NULL) {
8950a950 333 *ret_data = qobject_from_jsonf("{ 'enabled': false }");
d96fd29c 334 } else {
d96fd29c 335 QList *clist;
41b4bef6 336 VncState *client;
1ff7df1a 337
d96fd29c 338 clist = qlist_new();
41b4bef6
AS		 339 QTAILQ_FOREACH(client, &vnc_display->clients, next) {
340 if (client->info) {
341 /* incref so that it's not freed by upper layers */
342 qobject_incref(client->info);
343 qlist_append_obj(clist, client->info);
1ff7df1a 344 }
d96fd29c
LC		 345 }
346
8950a950 347 *ret_data = qobject_from_jsonf("{ 'enabled': true, 'clients': %p }",
d96fd29c
LC		 348 QOBJECT(clist));
349 assert(*ret_data != NULL);
350
a7789382 351 if (vnc_server_info_put(qobject_to_qdict(*ret_data)) < 0) {
d96fd29c
LC		 352 qobject_decref(*ret_data);
353 *ret_data = NULL;
1ff7df1a 354 }
a9ce8590
FB		 355 }
356}
357
24236869
FB		 358/* TODO
359 1) Get the queue working for IO.
360 2) there is some weirdness when using the -S option (the screen is grey
361 and not totally invalidated
362 3) resolutions > 1024
363*/
364
2430ffe4 365static int vnc_update_client(VncState *vs, int has_dirty);
bd023f95 366static int vnc_update_client_sync(VncState *vs, int has_dirty);
198a0039
GH		 367static void vnc_disconnect_start(VncState *vs);
368static void vnc_disconnect_finish(VncState *vs);
703bc68f
SS		 369static void vnc_init_timer(VncDisplay *vd);
370static void vnc_remove_timer(VncDisplay *vd);
24236869 371
753b4053 372static void vnc_colordepth(VncState *vs);
1fc62412
SS		 373static void framebuffer_update_request(VncState *vs, int incremental,
374 int x_position, int y_position,
375 int w, int h);
376static void vnc_refresh(void *opaque);
377static int vnc_refresh_server_surface(VncDisplay *vd);
7eac3a87 378
99589bdc
FB		 379static inline void vnc_set_bit(uint32_t *d, int k)
380{
381 d[k >> 5] |= 1 << (k & 0x1f);
382}
383
384static inline void vnc_clear_bit(uint32_t *d, int k)
385{
386 d[k >> 5] &= ~(1 << (k & 0x1f));
387}
388
389static inline void vnc_set_bits(uint32_t *d, int n, int nb_words)
390{
391 int j;
392
393 j = 0;
394 while (n >= 32) {
395 d[j++] = -1;
396 n -= 32;
397 }
5fafdf24 398 if (n > 0)
99589bdc
FB		 399 d[j++] = (1 << n) - 1;
400 while (j < nb_words)
401 d[j++] = 0;
402}
403
404static inline int vnc_get_bit(const uint32_t *d, int k)
405{
406 return (d[k >> 5] >> (k & 0x1f)) & 1;
407}
408
5fafdf24 409static inline int vnc_and_bits(const uint32_t *d1, const uint32_t *d2,
99589bdc
FB		 410 int nb_words)
411{
412 int i;
413 for(i = 0; i < nb_words; i++) {
414 if ((d1[i] & d2[i]) != 0)
415 return 1;
416 }
417 return 0;
418}
419
1fc62412 420static void vnc_dpy_update(DisplayState *ds, int x, int y, int w, int h)
24236869 421{
24236869 422 int i;
1fc62412
SS		 423 VncDisplay *vd = ds->opaque;
424 struct VncSurface *s = &vd->guest;
24236869
FB		 425
426 h += y;
427
0486e8a7
AZ		 428 /* round x down to ensure the loop only spans one 16-pixel block per,
429 iteration. otherwise, if (x % 16) != 0, the last iteration may span
430 two 16-pixel blocks but we only mark the first as dirty
431 */
432 w += (x % 16);
433 x -= (x % 16);
434
6baebed7
AL		 435 x = MIN(x, s->ds->width);
436 y = MIN(y, s->ds->height);
437 w = MIN(x + w, s->ds->width) - x;
438 h = MIN(h, s->ds->height);
788abf8e 439
24236869 440 for (; y < h; y++)
28a76be8 441 for (i = 0; i < w; i += 16)
6baebed7 442 vnc_set_bit(s->dirty[y], (x + i) / 16);
24236869
FB		 443}
444
70a4568f
CC		 445void vnc_framebuffer_update(VncState *vs, int x, int y, int w, int h,
446 int32_t encoding)
24236869
FB		 447{
448 vnc_write_u16(vs, x);
449 vnc_write_u16(vs, y);
450 vnc_write_u16(vs, w);
451 vnc_write_u16(vs, h);
452
453 vnc_write_s32(vs, encoding);
454}
455
2f9606b3 456void buffer_reserve(Buffer *buffer, size_t len)
89064286
AL		 457{
458 if ((buffer->capacity - buffer->offset) < len) {
28a76be8
AL		 459 buffer->capacity += (len + 1024);
460 buffer->buffer = qemu_realloc(buffer->buffer, buffer->capacity);
461 if (buffer->buffer == NULL) {
462 fprintf(stderr, "vnc: out of memory\n");
463 exit(1);
464 }
89064286
AL		 465 }
466}
467
2f9606b3 468int buffer_empty(Buffer *buffer)
89064286
AL		 469{
470 return buffer->offset == 0;
471}
472
2f9606b3 473uint8_t *buffer_end(Buffer *buffer)
89064286
AL		 474{
475 return buffer->buffer + buffer->offset;
476}
477
2f9606b3 478void buffer_reset(Buffer *buffer)
89064286 479{
28a76be8 480 buffer->offset = 0;
89064286
AL		 481}
482
5d418e3b
CC		 483void buffer_free(Buffer *buffer)
484{
485 qemu_free(buffer->buffer);
486 buffer->offset = 0;
487 buffer->capacity = 0;
488 buffer->buffer = NULL;
489}
490
2f9606b3 491void buffer_append(Buffer *buffer, const void *data, size_t len)
89064286
AL		 492{
493 memcpy(buffer->buffer + buffer->offset, data, len);
494 buffer->offset += len;
495}
496
621aaeb9
GH		 497static void vnc_desktop_resize(VncState *vs)
498{
499 DisplayState *ds = vs->ds;
500
501 if (vs->csock == -1 || !vnc_has_feature(vs, VNC_FEATURE_RESIZE)) {
502 return;
503 }
1d4b638a
GH		 504 if (vs->client_width == ds_get_width(ds) &&
505 vs->client_height == ds_get_height(ds)) {
506 return;
507 }
5862d195
GH		 508 vs->client_width = ds_get_width(ds);
509 vs->client_height = ds_get_height(ds);
bd023f95 510 vnc_lock_output(vs);
621aaeb9
GH		 511 vnc_write_u8(vs, VNC_MSG_SERVER_FRAMEBUFFER_UPDATE);
512 vnc_write_u8(vs, 0);
513 vnc_write_u16(vs, 1); /* number of rects */
5862d195 514 vnc_framebuffer_update(vs, 0, 0, vs->client_width, vs->client_height,
621aaeb9 515 VNC_ENCODING_DESKTOPRESIZE);
bd023f95 516 vnc_unlock_output(vs);
621aaeb9
GH		 517 vnc_flush(vs);
518}
519
bd023f95
CC		 520#ifdef CONFIG_VNC_THREAD
521static void vnc_abort_display_jobs(VncDisplay *vd)
522{
523 VncState *vs;
524
525 QTAILQ_FOREACH(vs, &vd->clients, next) {
526 vnc_lock_output(vs);
527 vs->abort = true;
528 vnc_unlock_output(vs);
529 }
530 QTAILQ_FOREACH(vs, &vd->clients, next) {
531 vnc_jobs_join(vs);
532 }
533 QTAILQ_FOREACH(vs, &vd->clients, next) {
534 vnc_lock_output(vs);
535 vs->abort = false;
536 vnc_unlock_output(vs);
537 }
538}
539#else
540static void vnc_abort_display_jobs(VncDisplay *vd)
541{
542}
543#endif
544
1fc62412 545static void vnc_dpy_resize(DisplayState *ds)
24236869 546{
1fc62412 547 VncDisplay *vd = ds->opaque;
41b4bef6 548 VncState *vs;
1fc62412 549
bd023f95
CC		 550 vnc_abort_display_jobs(vd);
551
1fc62412
SS		 552 /* server surface */
553 if (!vd->server)
554 vd->server = qemu_mallocz(sizeof(*vd->server));
555 if (vd->server->data)
556 qemu_free(vd->server->data);
557 *(vd->server) = *(ds->surface);
558 vd->server->data = qemu_mallocz(vd->server->linesize *
559 vd->server->height);
24236869 560
6baebed7 561 /* guest surface */
1fc62412
SS		 562 if (!vd->guest.ds)
563 vd->guest.ds = qemu_mallocz(sizeof(*vd->guest.ds));
564 if (ds_get_bytes_per_pixel(ds) != vd->guest.ds->pf.bytes_per_pixel)
a528b80c 565 console_color_init(ds);
1fc62412
SS		 566 *(vd->guest.ds) = *(ds->surface);
567 memset(vd->guest.dirty, 0xFF, sizeof(vd->guest.dirty));
24236869 568
41b4bef6 569 QTAILQ_FOREACH(vs, &vd->clients, next) {
1fc62412 570 vnc_colordepth(vs);
1d4b638a 571 vnc_desktop_resize(vs);
d467b679
GH		 572 if (vs->vd->cursor) {
573 vnc_cursor_define(vs);
574 }
1fc62412 575 memset(vs->dirty, 0xFF, sizeof(vs->dirty));
753b4053
AL		 576 }
577}
578
3512779a 579/* fastest code */
d467b679
GH		 580static void vnc_write_pixels_copy(VncState *vs, struct PixelFormat *pf,
581 void *pixels, int size)
3512779a
FB		 582{
583 vnc_write(vs, pixels, size);
584}
585
586/* slowest but generic code. */
70a4568f 587void vnc_convert_pixel(VncState *vs, uint8_t *buf, uint32_t v)
3512779a 588{
7eac3a87 589 uint8_t r, g, b;
1fc62412
SS		 590 VncDisplay *vd = vs->vd;
591
592 r = ((((v & vd->server->pf.rmask) >> vd->server->pf.rshift) << vs->clientds.pf.rbits) >>
593 vd->server->pf.rbits);
594 g = ((((v & vd->server->pf.gmask) >> vd->server->pf.gshift) << vs->clientds.pf.gbits) >>
595 vd->server->pf.gbits);
596 b = ((((v & vd->server->pf.bmask) >> vd->server->pf.bshift) << vs->clientds.pf.bbits) >>
597 vd->server->pf.bbits);
6cec5487
AL		 598 v = (r << vs->clientds.pf.rshift) |
599 (g << vs->clientds.pf.gshift) |
600 (b << vs->clientds.pf.bshift);
601 switch(vs->clientds.pf.bytes_per_pixel) {
3512779a
FB		 602 case 1:
603 buf[0] = v;
604 break;
605 case 2:
6cec5487 606 if (vs->clientds.flags & QEMU_BIG_ENDIAN_FLAG) {
3512779a
FB		 607 buf[0] = v >> 8;
608 buf[1] = v;
609 } else {
610 buf[1] = v >> 8;
611 buf[0] = v;
612 }
613 break;
614 default:
615 case 4:
6cec5487 616 if (vs->clientds.flags & QEMU_BIG_ENDIAN_FLAG) {
3512779a
FB		 617 buf[0] = v >> 24;
618 buf[1] = v >> 16;
619 buf[2] = v >> 8;
620 buf[3] = v;
621 } else {
622 buf[3] = v >> 24;
623 buf[2] = v >> 16;
624 buf[1] = v >> 8;
625 buf[0] = v;
626 }
627 break;
628 }
629}
630
d467b679
GH		 631static void vnc_write_pixels_generic(VncState *vs, struct PixelFormat *pf,
632 void *pixels1, int size)
3512779a 633{
3512779a 634 uint8_t buf[4];
3512779a 635
d467b679 636 if (pf->bytes_per_pixel == 4) {
7eac3a87
AL		 637 uint32_t *pixels = pixels1;
638 int n, i;
639 n = size >> 2;
640 for(i = 0; i < n; i++) {
641 vnc_convert_pixel(vs, buf, pixels[i]);
6cec5487 642 vnc_write(vs, buf, vs->clientds.pf.bytes_per_pixel);
7eac3a87 643 }
d467b679 644 } else if (pf->bytes_per_pixel == 2) {
7eac3a87
AL		 645 uint16_t *pixels = pixels1;
646 int n, i;
647 n = size >> 1;
648 for(i = 0; i < n; i++) {
649 vnc_convert_pixel(vs, buf, pixels[i]);
6cec5487 650 vnc_write(vs, buf, vs->clientds.pf.bytes_per_pixel);
7eac3a87 651 }
d467b679 652 } else if (pf->bytes_per_pixel == 1) {
7eac3a87
AL		 653 uint8_t *pixels = pixels1;
654 int n, i;
655 n = size;
656 for(i = 0; i < n; i++) {
657 vnc_convert_pixel(vs, buf, pixels[i]);
6cec5487 658 vnc_write(vs, buf, vs->clientds.pf.bytes_per_pixel);
7eac3a87
AL		 659 }
660 } else {
661 fprintf(stderr, "vnc_write_pixels_generic: VncState color depth not supported\n");
3512779a
FB		 662 }
663}
664
a885211e 665int vnc_raw_send_framebuffer_update(VncState *vs, int x, int y, int w, int h)
24236869
FB		 666{
667 int i;
60fe76f3 668 uint8_t *row;
1fc62412 669 VncDisplay *vd = vs->vd;
24236869 670
1fc62412 671 row = vd->server->data + y * ds_get_linesize(vs->ds) + x * ds_get_bytes_per_pixel(vs->ds);
24236869 672 for (i = 0; i < h; i++) {
d467b679 673 vs->write_pixels(vs, &vd->server->pf, row, w * ds_get_bytes_per_pixel(vs->ds));
28a76be8 674 row += ds_get_linesize(vs->ds);
24236869 675 }
a885211e 676 return 1;
24236869
FB		 677}
678
bd023f95 679int vnc_send_framebuffer_update(VncState *vs, int x, int y, int w, int h)
24236869 680{
a885211e
CC		 681 int n = 0;
682
fb437313 683 switch(vs->vnc_encoding) {
28a76be8 684 case VNC_ENCODING_ZLIB:
a885211e 685 n = vnc_zlib_send_framebuffer_update(vs, x, y, w, h);
28a76be8
AL		 686 break;
687 case VNC_ENCODING_HEXTILE:
688 vnc_framebuffer_update(vs, x, y, w, h, VNC_ENCODING_HEXTILE);
a885211e 689 n = vnc_hextile_send_framebuffer_update(vs, x, y, w, h);
28a76be8 690 break;
380282b0
CC		 691 case VNC_ENCODING_TIGHT:
692 n = vnc_tight_send_framebuffer_update(vs, x, y, w, h);
693 break;
efe556ad
CC		 694 case VNC_ENCODING_TIGHT_PNG:
695 n = vnc_tight_png_send_framebuffer_update(vs, x, y, w, h);
696 break;
28a76be8
AL		 697 default:
698 vnc_framebuffer_update(vs, x, y, w, h, VNC_ENCODING_RAW);
a885211e 699 n = vnc_raw_send_framebuffer_update(vs, x, y, w, h);
28a76be8 700 break;
fb437313 701 }
a885211e 702 return n;
24236869
FB		 703}
704
753b4053 705static void vnc_copy(VncState *vs, int src_x, int src_y, int dst_x, int dst_y, int w, int h)
24236869 706{
3e28c9ad 707 /* send bitblit op to the vnc client */
bd023f95 708 vnc_lock_output(vs);
46a183da 709 vnc_write_u8(vs, VNC_MSG_SERVER_FRAMEBUFFER_UPDATE);
24236869
FB		 710 vnc_write_u8(vs, 0);
711 vnc_write_u16(vs, 1); /* number of rects */
29fa4ed9 712 vnc_framebuffer_update(vs, dst_x, dst_y, w, h, VNC_ENCODING_COPYRECT);
24236869
FB		 713 vnc_write_u16(vs, src_x);
714 vnc_write_u16(vs, src_y);
bd023f95 715 vnc_unlock_output(vs);
24236869
FB		 716 vnc_flush(vs);
717}
718
753b4053
AL		 719static void vnc_dpy_copy(DisplayState *ds, int src_x, int src_y, int dst_x, int dst_y, int w, int h)
720{
721 VncDisplay *vd = ds->opaque;
198a0039 722 VncState *vs, *vn;
1fc62412
SS		 723 uint8_t *src_row;
724 uint8_t *dst_row;
725 int i,x,y,pitch,depth,inc,w_lim,s;
726 int cmp_bytes;
198a0039 727
1fc62412 728 vnc_refresh_server_surface(vd);
41b4bef6 729 QTAILQ_FOREACH_SAFE(vs, &vd->clients, next, vn) {
198a0039
GH		 730 if (vnc_has_feature(vs, VNC_FEATURE_COPYRECT)) {
731 vs->force_update = 1;
bd023f95 732 vnc_update_client_sync(vs, 1);
198a0039
GH		 733 /* vs might be free()ed here */
734 }
735 }
736
1fc62412
SS		 737 /* do bitblit op on the local surface too */
738 pitch = ds_get_linesize(vd->ds);
739 depth = ds_get_bytes_per_pixel(vd->ds);
740 src_row = vd->server->data + pitch * src_y + depth * src_x;
741 dst_row = vd->server->data + pitch * dst_y + depth * dst_x;
742 y = dst_y;
743 inc = 1;
744 if (dst_y > src_y) {
745 /* copy backwards */
746 src_row += pitch * (h-1);
747 dst_row += pitch * (h-1);
748 pitch = -pitch;
749 y = dst_y + h - 1;
750 inc = -1;
751 }
752 w_lim = w - (16 - (dst_x % 16));
753 if (w_lim < 0)
754 w_lim = w;
755 else
756 w_lim = w - (w_lim % 16);
757 for (i = 0; i < h; i++) {
758 for (x = 0; x <= w_lim;
759 x += s, src_row += cmp_bytes, dst_row += cmp_bytes) {
760 if (x == w_lim) {
761 if ((s = w - w_lim) == 0)
762 break;
763 } else if (!x) {
764 s = (16 - (dst_x % 16));
765 s = MIN(s, w_lim);
766 } else {
767 s = 16;
768 }
769 cmp_bytes = s * depth;
770 if (memcmp(src_row, dst_row, cmp_bytes) == 0)
771 continue;
772 memmove(dst_row, src_row, cmp_bytes);
41b4bef6
AS		 773 QTAILQ_FOREACH(vs, &vd->clients, next) {
774 if (!vnc_has_feature(vs, VNC_FEATURE_COPYRECT)) {
1fc62412 775 vnc_set_bit(vs->dirty[y], ((x + dst_x) / 16));
41b4bef6 776 }
1fc62412
SS		 777 }
778 }
779 src_row += pitch - w * depth;
780 dst_row += pitch - w * depth;
781 y += inc;
782 }
783
41b4bef6
AS		 784 QTAILQ_FOREACH(vs, &vd->clients, next) {
785 if (vnc_has_feature(vs, VNC_FEATURE_COPYRECT)) {
753b4053 786 vnc_copy(vs, src_x, src_y, dst_x, dst_y, w, h);
41b4bef6 787 }
753b4053
AL		 788 }
789}
790
d467b679
GH		 791static void vnc_mouse_set(int x, int y, int visible)
792{
793 /* can we ask the client(s) to move the pointer ??? */
794}
795
796static int vnc_cursor_define(VncState *vs)
797{
798 QEMUCursor *c = vs->vd->cursor;
799 PixelFormat pf = qemu_default_pixelformat(32);
800 int isize;
801
802 if (vnc_has_feature(vs, VNC_FEATURE_RICH_CURSOR)) {
d01f9595 803 vnc_lock_output(vs);
d467b679
GH		 804 vnc_write_u8(vs, VNC_MSG_SERVER_FRAMEBUFFER_UPDATE);
805 vnc_write_u8(vs, 0); /* padding */
806 vnc_write_u16(vs, 1); /* # of rects */
807 vnc_framebuffer_update(vs, c->hot_x, c->hot_y, c->width, c->height,
808 VNC_ENCODING_RICH_CURSOR);
809 isize = c->width * c->height * vs->clientds.pf.bytes_per_pixel;
810 vnc_write_pixels_generic(vs, &pf, c->data, isize);
811 vnc_write(vs, vs->vd->cursor_mask, vs->vd->cursor_msize);
d01f9595 812 vnc_unlock_output(vs);
d467b679
GH		 813 return 0;
814 }
815 return -1;
816}
817
818static void vnc_dpy_cursor_define(QEMUCursor *c)
819{
820 VncDisplay *vd = vnc_display;
821 VncState *vs;
822
823 cursor_put(vd->cursor);
824 qemu_free(vd->cursor_mask);
825
826 vd->cursor = c;
827 cursor_get(vd->cursor);
828 vd->cursor_msize = cursor_get_mono_bpl(c) * c->height;
829 vd->cursor_mask = qemu_mallocz(vd->cursor_msize);
830 cursor_get_mono_mask(c, 0, vd->cursor_mask);
831
832 QTAILQ_FOREACH(vs, &vd->clients, next) {
833 vnc_cursor_define(vs);
834 }
835}
836
1fc62412 837static int find_and_clear_dirty_height(struct VncState *vs,
6baebed7 838 int y, int last_x, int x)
24236869
FB		 839{
840 int h;
1fc62412 841 VncDisplay *vd = vs->vd;
24236869 842
1fc62412 843 for (h = 1; h < (vd->server->height - y); h++) {
28a76be8 844 int tmp_x;
1fc62412 845 if (!vnc_get_bit(vs->dirty[y + h], last_x))
28a76be8
AL		 846 break;
847 for (tmp_x = last_x; tmp_x < x; tmp_x++)
1fc62412 848 vnc_clear_bit(vs->dirty[y + h], tmp_x);
24236869
FB		 849 }
850
851 return h;
852}
853
bd023f95
CC		 854#ifdef CONFIG_VNC_THREAD
855static int vnc_update_client_sync(VncState *vs, int has_dirty)
856{
857 int ret = vnc_update_client(vs, has_dirty);
858 vnc_jobs_join(vs);
859 return ret;
860}
861#else
862static int vnc_update_client_sync(VncState *vs, int has_dirty)
863{
864 return vnc_update_client(vs, has_dirty);
865}
866#endif
867
2430ffe4 868static int vnc_update_client(VncState *vs, int has_dirty)
24236869 869{
24236869 870 if (vs->need_update && vs->csock != -1) {
1fc62412 871 VncDisplay *vd = vs->vd;
bd023f95 872 VncJob *job;
28a76be8 873 int y;
847ce6a1 874 int width, height;
bd023f95
CC		 875 int n = 0;
876
24236869 877
703bc68f 878 if (vs->output.offset && !vs->audio_cap && !vs->force_update)
c522d0e2 879 /* kernel send buffers are full -> drop frames to throttle */
2430ffe4 880 return 0;
a0ecfb73 881
703bc68f 882 if (!has_dirty && !vs->audio_cap && !vs->force_update)
2430ffe4 883 return 0;
28a76be8 884
6baebed7
AL		 885 /*
886 * Send screen updates to the vnc client using the server
887 * surface and server dirty map. guest surface updates
888 * happening in parallel don't disturb us, the next pass will
889 * send them to the client.
890 */
bd023f95 891 job = vnc_job_new(vs);
28a76be8 892
847ce6a1
GH		 893 width = MIN(vd->server->width, vs->client_width);
894 height = MIN(vd->server->height, vs->client_height);
895
896 for (y = 0; y < height; y++) {
28a76be8
AL		 897 int x;
898 int last_x = -1;
847ce6a1 899 for (x = 0; x < width / 16; x++) {
1fc62412 900 if (vnc_get_bit(vs->dirty[y], x)) {
28a76be8
AL		 901 if (last_x == -1) {
902 last_x = x;
903 }
1fc62412 904 vnc_clear_bit(vs->dirty[y], x);
28a76be8
AL		 905 } else {
906 if (last_x != -1) {
1fc62412 907 int h = find_and_clear_dirty_height(vs, y, last_x, x);
bd023f95
CC		 908
909 n += vnc_job_add_rect(job, last_x * 16, y,
910 (x - last_x) * 16, h);
28a76be8
AL		 911 }
912 last_x = -1;
913 }
914 }
915 if (last_x != -1) {
1fc62412 916 int h = find_and_clear_dirty_height(vs, y, last_x, x);
bd023f95
CC		 917 n += vnc_job_add_rect(job, last_x * 16, y,
918 (x - last_x) * 16, h);
28a76be8
AL		 919 }
920 }
bd023f95
CC		 921
922 vnc_job_push(job);
c522d0e2 923 vs->force_update = 0;
bd023f95 924 return n;
24236869 925 }
24236869 926
703bc68f 927 if (vs->csock == -1)
198a0039 928 vnc_disconnect_finish(vs);
2430ffe4
SS		 929
930 return 0;
24236869
FB		 931}
932
429a8ed3 933/* audio */
934static void audio_capture_notify(void *opaque, audcnotification_e cmd)
935{
936 VncState *vs = opaque;
937
938 switch (cmd) {
939 case AUD_CNOTIFY_DISABLE:
bd023f95 940 vnc_lock_output(vs);
46a183da
DB		 941 vnc_write_u8(vs, VNC_MSG_SERVER_QEMU);
942 vnc_write_u8(vs, VNC_MSG_SERVER_QEMU_AUDIO);
943 vnc_write_u16(vs, VNC_MSG_SERVER_QEMU_AUDIO_END);
bd023f95 944 vnc_unlock_output(vs);
429a8ed3 945 vnc_flush(vs);
946 break;
947
948 case AUD_CNOTIFY_ENABLE:
bd023f95 949 vnc_lock_output(vs);
46a183da
DB		 950 vnc_write_u8(vs, VNC_MSG_SERVER_QEMU);
951 vnc_write_u8(vs, VNC_MSG_SERVER_QEMU_AUDIO);
952 vnc_write_u16(vs, VNC_MSG_SERVER_QEMU_AUDIO_BEGIN);
bd023f95 953 vnc_unlock_output(vs);
429a8ed3 954 vnc_flush(vs);
955 break;
956 }
957}
958
959static void audio_capture_destroy(void *opaque)
960{
961}
962
963static void audio_capture(void *opaque, void *buf, int size)
964{
965 VncState *vs = opaque;
966
bd023f95 967 vnc_lock_output(vs);
46a183da
DB		 968 vnc_write_u8(vs, VNC_MSG_SERVER_QEMU);
969 vnc_write_u8(vs, VNC_MSG_SERVER_QEMU_AUDIO);
970 vnc_write_u16(vs, VNC_MSG_SERVER_QEMU_AUDIO_DATA);
429a8ed3 971 vnc_write_u32(vs, size);
972 vnc_write(vs, buf, size);
bd023f95 973 vnc_unlock_output(vs);
429a8ed3 974 vnc_flush(vs);
975}
976
977static void audio_add(VncState *vs)
978{
979 struct audio_capture_ops ops;
980
981 if (vs->audio_cap) {
8631b608 982 monitor_printf(default_mon, "audio already running\n");
429a8ed3 983 return;
984 }
985
986 ops.notify = audio_capture_notify;
987 ops.destroy = audio_capture_destroy;
988 ops.capture = audio_capture;
989
1a7dafce 990 vs->audio_cap = AUD_add_capture(&vs->as, &ops, vs);
429a8ed3 991 if (!vs->audio_cap) {
8631b608 992 monitor_printf(default_mon, "Failed to add audio capture\n");
429a8ed3 993 }
994}
995
996static void audio_del(VncState *vs)
997{
998 if (vs->audio_cap) {
999 AUD_del_capture(vs->audio_cap, vs);
1000 vs->audio_cap = NULL;
1001 }
1002}
1003
198a0039
GH		 1004static void vnc_disconnect_start(VncState *vs)
1005{
1006 if (vs->csock == -1)
1007 return;
1008 qemu_set_fd_handler2(vs->csock, NULL, NULL, NULL, NULL);
1009 closesocket(vs->csock);
1010 vs->csock = -1;
1011}
1012
1013static void vnc_disconnect_finish(VncState *vs)
1014{
bd023f95
CC		 1015 vnc_jobs_join(vs); /* Wait encoding jobs */
1016
1017 vnc_lock_output(vs);
0d72f3d3
LC		 1018 vnc_qmp_event(vs, QEVENT_VNC_DISCONNECTED);
1019
5d418e3b
CC		 1020 buffer_free(&vs->input);
1021 buffer_free(&vs->output);
4a80dba3
LC		 1022
1023 qobject_decref(vs->info);
1024
161c4f20 1025 vnc_zlib_clear(vs);
380282b0 1026 vnc_tight_clear(vs);
161c4f20 1027
198a0039
GH		 1028#ifdef CONFIG_VNC_TLS
1029 vnc_tls_client_cleanup(vs);
1030#endif /* CONFIG_VNC_TLS */
1031#ifdef CONFIG_VNC_SASL
1032 vnc_sasl_client_cleanup(vs);
1033#endif /* CONFIG_VNC_SASL */
1034 audio_del(vs);
1035
41b4bef6
AS		 1036 QTAILQ_REMOVE(&vs->vd->clients, vs, next);
1037
1038 if (QTAILQ_EMPTY(&vs->vd->clients)) {
198a0039 1039 dcl->idle = 1;
41b4bef6 1040 }
198a0039 1041
37c34d9d 1042 qemu_remove_mouse_mode_change_notifier(&vs->mouse_mode_notifier);
703bc68f 1043 vnc_remove_timer(vs->vd);
3a0558b5
GH		 1044 if (vs->vd->lock_key_sync)
1045 qemu_remove_led_event_handler(vs->led);
bd023f95
CC		 1046 vnc_unlock_output(vs);
1047
1048#ifdef CONFIG_VNC_THREAD
1049 qemu_mutex_destroy(&vs->output_mutex);
1050#endif
5d95ac5b 1051 qemu_free(vs);
198a0039 1052}
2f9606b3
AL		 1053
1054int vnc_client_io_error(VncState *vs, int ret, int last_errno)
24236869
FB		 1055{
1056 if (ret == 0 || ret == -1) {
ea01e5fd
AZ		 1057 if (ret == -1) {
1058 switch (last_errno) {
1059 case EINTR:
1060 case EAGAIN:
1061#ifdef _WIN32
1062 case WSAEWOULDBLOCK:
1063#endif
1064 return 0;
1065 default:
1066 break;
1067 }
1068 }
24236869 1069
198a0039
GH		 1070 VNC_DEBUG("Closing down client sock: ret %d, errno %d\n",
1071 ret, ret < 0 ? last_errno : 0);
1072 vnc_disconnect_start(vs);
6baebed7 1073
28a76be8 1074 return 0;
24236869
FB		 1075 }
1076 return ret;
1077}
1078
5fb6c7a8
AL		 1079
1080void vnc_client_error(VncState *vs)
24236869 1081{
198a0039
GH		 1082 VNC_DEBUG("Closing down client sock: protocol error\n");
1083 vnc_disconnect_start(vs);
24236869
FB		 1084}
1085
2f9606b3
AL		 1086
1087/*
1088 * Called to write a chunk of data to the client socket. The data may
1089 * be the raw data, or may have already been encoded by SASL.
1090 * The data will be written either straight onto the socket, or
1091 * written via the GNUTLS wrappers, if TLS/SSL encryption is enabled
1092 *
1093 * NB, it is theoretically possible to have 2 layers of encryption,
1094 * both SASL, and this TLS layer. It is highly unlikely in practice
1095 * though, since SASL encryption will typically be a no-op if TLS
1096 * is active
1097 *
1098 * Returns the number of bytes written, which may be less than
1099 * the requested 'datalen' if the socket would block. Returns
1100 * -1 on error, and disconnects the client socket.
1101 */
1102long vnc_client_write_buf(VncState *vs, const uint8_t *data, size_t datalen)
24236869 1103{
ceb5caaf 1104 long ret;
eb38c52c 1105#ifdef CONFIG_VNC_TLS
5fb6c7a8 1106 if (vs->tls.session) {
28a76be8
AL		 1107 ret = gnutls_write(vs->tls.session, data, datalen);
1108 if (ret < 0) {
1109 if (ret == GNUTLS_E_AGAIN)
1110 errno = EAGAIN;
1111 else
1112 errno = EIO;
1113 ret = -1;
1114 }
8d5d2d4c
TS		 1115 } else
1116#endif /* CONFIG_VNC_TLS */
70503264 1117 ret = send(vs->csock, (const void *)data, datalen, 0);
23decc87 1118 VNC_DEBUG("Wrote wire %p %zd -> %ld\n", data, datalen, ret);
2f9606b3
AL		 1119 return vnc_client_io_error(vs, ret, socket_error());
1120}
1121
1122
1123/*
1124 * Called to write buffered data to the client socket, when not
1125 * using any SASL SSF encryption layers. Will write as much data
1126 * as possible without blocking. If all buffered data is written,
1127 * will switch the FD poll() handler back to read monitoring.
1128 *
1129 * Returns the number of bytes written, which may be less than
1130 * the buffered output data if the socket would block. Returns
1131 * -1 on error, and disconnects the client socket.
1132 */
1133static long vnc_client_write_plain(VncState *vs)
1134{
1135 long ret;
1136
1137#ifdef CONFIG_VNC_SASL
23decc87 1138 VNC_DEBUG("Write Plain: Pending output %p size %zd offset %zd. Wait SSF %d\n",
2f9606b3
AL		 1139 vs->output.buffer, vs->output.capacity, vs->output.offset,
1140 vs->sasl.waitWriteSSF);
1141
1142 if (vs->sasl.conn &&
1143 vs->sasl.runSSF &&
1144 vs->sasl.waitWriteSSF) {
1145 ret = vnc_client_write_buf(vs, vs->output.buffer, vs->sasl.waitWriteSSF);
1146 if (ret)
1147 vs->sasl.waitWriteSSF -= ret;
1148 } else
1149#endif /* CONFIG_VNC_SASL */
1150 ret = vnc_client_write_buf(vs, vs->output.buffer, vs->output.offset);
24236869 1151 if (!ret)
2f9606b3 1152 return 0;
24236869
FB		 1153
1154 memmove(vs->output.buffer, vs->output.buffer + ret, (vs->output.offset - ret));
1155 vs->output.offset -= ret;
1156
1157 if (vs->output.offset == 0) {
28a76be8 1158 qemu_set_fd_handler2(vs->csock, NULL, vnc_client_read, NULL, vs);
24236869 1159 }
2f9606b3
AL		 1160
1161 return ret;
1162}
1163
1164
1165/*
1166 * First function called whenever there is data to be written to
1167 * the client socket. Will delegate actual work according to whether
1168 * SASL SSF layers are enabled (thus requiring encryption calls)
1169 */
bd023f95 1170static void vnc_client_write_locked(void *opaque)
2f9606b3 1171{
2f9606b3
AL		 1172 VncState *vs = opaque;
1173
1174#ifdef CONFIG_VNC_SASL
1175 if (vs->sasl.conn &&
1176 vs->sasl.runSSF &&
9678d950
BS		 1177 !vs->sasl.waitWriteSSF) {
1178 vnc_client_write_sasl(vs);
1179 } else
2f9606b3 1180#endif /* CONFIG_VNC_SASL */
9678d950 1181 vnc_client_write_plain(vs);
24236869
FB		 1182}
1183
bd023f95
CC		 1184void vnc_client_write(void *opaque)
1185{
1186 VncState *vs = opaque;
1187
1188 vnc_lock_output(vs);
1189 if (vs->output.offset) {
1190 vnc_client_write_locked(opaque);
ac71103d 1191 } else if (vs->csock != -1) {
bd023f95
CC		 1192 qemu_set_fd_handler2(vs->csock, NULL, vnc_client_read, NULL, vs);
1193 }
1194 vnc_unlock_output(vs);
1195}
1196
5fb6c7a8 1197void vnc_read_when(VncState *vs, VncReadEvent *func, size_t expecting)
24236869
FB		 1198{
1199 vs->read_handler = func;
1200 vs->read_handler_expect = expecting;
1201}
1202
2f9606b3
AL		 1203
1204/*
1205 * Called to read a chunk of data from the client socket. The data may
1206 * be the raw data, or may need to be further decoded by SASL.
1207 * The data will be read either straight from to the socket, or
1208 * read via the GNUTLS wrappers, if TLS/SSL encryption is enabled
1209 *
1210 * NB, it is theoretically possible to have 2 layers of encryption,
1211 * both SASL, and this TLS layer. It is highly unlikely in practice
1212 * though, since SASL encryption will typically be a no-op if TLS
1213 * is active
1214 *
1215 * Returns the number of bytes read, which may be less than
1216 * the requested 'datalen' if the socket would block. Returns
1217 * -1 on error, and disconnects the client socket.
1218 */
1219long vnc_client_read_buf(VncState *vs, uint8_t *data, size_t datalen)
24236869 1220{
ceb5caaf 1221 long ret;
eb38c52c 1222#ifdef CONFIG_VNC_TLS
5fb6c7a8 1223 if (vs->tls.session) {
28a76be8
AL		 1224 ret = gnutls_read(vs->tls.session, data, datalen);
1225 if (ret < 0) {
1226 if (ret == GNUTLS_E_AGAIN)
1227 errno = EAGAIN;
1228 else
1229 errno = EIO;
1230 ret = -1;
1231 }
8d5d2d4c
TS		 1232 } else
1233#endif /* CONFIG_VNC_TLS */
c5b76b38 1234 ret = recv(vs->csock, (void *)data, datalen, 0);
23decc87 1235 VNC_DEBUG("Read wire %p %zd -> %ld\n", data, datalen, ret);
2f9606b3
AL		 1236 return vnc_client_io_error(vs, ret, socket_error());
1237}
24236869 1238
2f9606b3
AL		 1239
1240/*
1241 * Called to read data from the client socket to the input buffer,
1242 * when not using any SASL SSF encryption layers. Will read as much
1243 * data as possible without blocking.
1244 *
1245 * Returns the number of bytes read. Returns -1 on error, and
1246 * disconnects the client socket.
1247 */
1248static long vnc_client_read_plain(VncState *vs)
1249{
1250 int ret;
23decc87 1251 VNC_DEBUG("Read plain %p size %zd offset %zd\n",
2f9606b3
AL		 1252 vs->input.buffer, vs->input.capacity, vs->input.offset);
1253 buffer_reserve(&vs->input, 4096);
1254 ret = vnc_client_read_buf(vs, buffer_end(&vs->input), 4096);
1255 if (!ret)
1256 return 0;
24236869 1257 vs->input.offset += ret;
2f9606b3
AL		 1258 return ret;
1259}
1260
1261
1262/*
1263 * First function called whenever there is more data to be read from
1264 * the client socket. Will delegate actual work according to whether
1265 * SASL SSF layers are enabled (thus requiring decryption calls)
1266 */
1267void vnc_client_read(void *opaque)
1268{
1269 VncState *vs = opaque;
1270 long ret;
1271
1272#ifdef CONFIG_VNC_SASL
1273 if (vs->sasl.conn && vs->sasl.runSSF)
1274 ret = vnc_client_read_sasl(vs);
1275 else
1276#endif /* CONFIG_VNC_SASL */
1277 ret = vnc_client_read_plain(vs);
198a0039
GH		 1278 if (!ret) {
1279 if (vs->csock == -1)
1280 vnc_disconnect_finish(vs);
28a76be8 1281 return;
198a0039 1282 }
24236869
FB		 1283
1284 while (vs->read_handler && vs->input.offset >= vs->read_handler_expect) {
28a76be8
AL		 1285 size_t len = vs->read_handler_expect;
1286 int ret;
1287
1288 ret = vs->read_handler(vs, vs->input.buffer, len);
198a0039
GH		 1289 if (vs->csock == -1) {
1290 vnc_disconnect_finish(vs);
28a76be8 1291 return;
198a0039 1292 }
28a76be8
AL		 1293
1294 if (!ret) {
1295 memmove(vs->input.buffer, vs->input.buffer + len, (vs->input.offset - len));
1296 vs->input.offset -= len;
1297 } else {
1298 vs->read_handler_expect = ret;
1299 }
24236869
FB		 1300 }
1301}
1302
5fb6c7a8 1303void vnc_write(VncState *vs, const void *data, size_t len)
24236869
FB		 1304{
1305 buffer_reserve(&vs->output, len);
1306
198a0039 1307 if (vs->csock != -1 && buffer_empty(&vs->output)) {
28a76be8 1308 qemu_set_fd_handler2(vs->csock, NULL, vnc_client_read, vnc_client_write, vs);
24236869
FB		 1309 }
1310
1311 buffer_append(&vs->output, data, len);
1312}
1313
5fb6c7a8 1314void vnc_write_s32(VncState *vs, int32_t value)
24236869
FB		 1315{
1316 vnc_write_u32(vs, *(uint32_t *)&value);
1317}
1318
5fb6c7a8 1319void vnc_write_u32(VncState *vs, uint32_t value)
24236869
FB		 1320{
1321 uint8_t buf[4];
1322
1323 buf[0] = (value >> 24) & 0xFF;
1324 buf[1] = (value >> 16) & 0xFF;
1325 buf[2] = (value >> 8) & 0xFF;
1326 buf[3] = value & 0xFF;
1327
1328 vnc_write(vs, buf, 4);
1329}
1330
5fb6c7a8 1331void vnc_write_u16(VncState *vs, uint16_t value)
24236869 1332{
64f5a135 1333 uint8_t buf[2];
24236869
FB		 1334
1335 buf[0] = (value >> 8) & 0xFF;
1336 buf[1] = value & 0xFF;
1337
1338 vnc_write(vs, buf, 2);
1339}
1340
5fb6c7a8 1341void vnc_write_u8(VncState *vs, uint8_t value)
24236869
FB		 1342{
1343 vnc_write(vs, (char *)&value, 1);
1344}
1345
5fb6c7a8 1346void vnc_flush(VncState *vs)
24236869 1347{
bd023f95
CC		 1348 vnc_lock_output(vs);
1349 if (vs->csock != -1 && vs->output.offset) {
1350 vnc_client_write_locked(vs);
1351 }
1352 vnc_unlock_output(vs);
24236869
FB		 1353}
1354
5fb6c7a8 1355uint8_t read_u8(uint8_t *data, size_t offset)
24236869
FB		 1356{
1357 return data[offset];
1358}
1359
5fb6c7a8 1360uint16_t read_u16(uint8_t *data, size_t offset)
24236869
FB		 1361{
1362 return ((data[offset] & 0xFF) << 8) | (data[offset + 1] & 0xFF);
1363}
1364
5fb6c7a8 1365int32_t read_s32(uint8_t *data, size_t offset)
24236869
FB		 1366{
1367 return (int32_t)((data[offset] << 24) | (data[offset + 1] << 16) |
28a76be8 1368 (data[offset + 2] << 8) | data[offset + 3]);
24236869
FB		 1369}
1370
5fb6c7a8 1371uint32_t read_u32(uint8_t *data, size_t offset)
24236869
FB		 1372{
1373 return ((data[offset] << 24) | (data[offset + 1] << 16) |
28a76be8 1374 (data[offset + 2] << 8) | data[offset + 3]);
24236869
FB		 1375}
1376
60fe76f3 1377static void client_cut_text(VncState *vs, size_t len, uint8_t *text)
24236869
FB		 1378{
1379}
1380
37c34d9d 1381static void check_pointer_type_change(Notifier *notifier)
564c337e 1382{
37c34d9d
AL		 1383 VncState *vs = container_of(notifier, VncState, mouse_mode_notifier);
1384 int absolute = kbd_mouse_is_absolute();
1385
29fa4ed9 1386 if (vnc_has_feature(vs, VNC_FEATURE_POINTER_TYPE_CHANGE) && vs->absolute != absolute) {
bd023f95 1387 vnc_lock_output(vs);
46a183da 1388 vnc_write_u8(vs, VNC_MSG_SERVER_FRAMEBUFFER_UPDATE);
28a76be8
AL		 1389 vnc_write_u8(vs, 0);
1390 vnc_write_u16(vs, 1);
1391 vnc_framebuffer_update(vs, absolute, 0,
1392 ds_get_width(vs->ds), ds_get_height(vs->ds),
29fa4ed9 1393 VNC_ENCODING_POINTER_TYPE_CHANGE);
bd023f95 1394 vnc_unlock_output(vs);
28a76be8 1395 vnc_flush(vs);
564c337e
FB		 1396 }
1397 vs->absolute = absolute;
1398}
1399
24236869
FB		 1400static void pointer_event(VncState *vs, int button_mask, int x, int y)
1401{
1402 int buttons = 0;
1403 int dz = 0;
1404
1405 if (button_mask & 0x01)
28a76be8 1406 buttons |= MOUSE_EVENT_LBUTTON;
24236869 1407 if (button_mask & 0x02)
28a76be8 1408 buttons |= MOUSE_EVENT_MBUTTON;
24236869 1409 if (button_mask & 0x04)
28a76be8 1410 buttons |= MOUSE_EVENT_RBUTTON;
24236869 1411 if (button_mask & 0x08)
28a76be8 1412 dz = -1;
24236869 1413 if (button_mask & 0x10)
28a76be8 1414 dz = 1;
564c337e
FB		 1415
1416 if (vs->absolute) {
cc39a92c
CW		 1417 kbd_mouse_event(ds_get_width(vs->ds) > 1 ?
1418 x * 0x7FFF / (ds_get_width(vs->ds) - 1) : 0x4000,
1419 ds_get_height(vs->ds) > 1 ?
1420 y * 0x7FFF / (ds_get_height(vs->ds) - 1) : 0x4000,
28a76be8 1421 dz, buttons);
29fa4ed9 1422 } else if (vnc_has_feature(vs, VNC_FEATURE_POINTER_TYPE_CHANGE)) {
28a76be8
AL		 1423 x -= 0x7FFF;
1424 y -= 0x7FFF;
24236869 1425
28a76be8 1426 kbd_mouse_event(x, y, dz, buttons);
564c337e 1427 } else {
28a76be8
AL		 1428 if (vs->last_x != -1)
1429 kbd_mouse_event(x - vs->last_x,
1430 y - vs->last_y,
1431 dz, buttons);
1432 vs->last_x = x;
1433 vs->last_y = y;
24236869
FB		 1434 }
1435}
1436
64f5a135
FB		 1437static void reset_keys(VncState *vs)
1438{
1439 int i;
1440 for(i = 0; i < 256; i++) {
1441 if (vs->modifiers_state[i]) {
44bb61c8
ST		 1442 if (i & SCANCODE_GREY)
1443 kbd_put_keycode(SCANCODE_EMUL0);
1444 kbd_put_keycode(i | SCANCODE_UP);
64f5a135
FB		 1445 vs->modifiers_state[i] = 0;
1446 }
1447 }
1448}
1449
a528b80c
AZ		 1450static void press_key(VncState *vs, int keysym)
1451{
44bb61c8
ST		 1452 int keycode = keysym2scancode(vs->vd->kbd_layout, keysym) & SCANCODE_KEYMASK;
1453 if (keycode & SCANCODE_GREY)
1454 kbd_put_keycode(SCANCODE_EMUL0);
1455 kbd_put_keycode(keycode & SCANCODE_KEYCODEMASK);
1456 if (keycode & SCANCODE_GREY)
1457 kbd_put_keycode(SCANCODE_EMUL0);
1458 kbd_put_keycode(keycode | SCANCODE_UP);
a528b80c
AZ		 1459}
1460
7ffb82ca
GH		 1461static void kbd_leds(void *opaque, int ledstate)
1462{
1463 VncState *vs = opaque;
1464 int caps, num;
1465
1466 caps = ledstate & QEMU_CAPS_LOCK_LED ? 1 : 0;
1467 num = ledstate & QEMU_NUM_LOCK_LED ? 1 : 0;
1468
1469 if (vs->modifiers_state[0x3a] != caps) {
1470 vs->modifiers_state[0x3a] = caps;
1471 }
1472 if (vs->modifiers_state[0x45] != num) {
1473 vs->modifiers_state[0x45] = num;
1474 }
1475}
1476
9ca313aa 1477static void do_key_event(VncState *vs, int down, int keycode, int sym)
24236869 1478{
64f5a135
FB		 1479 /* QEMU console switch */
1480 switch(keycode) {
1481 case 0x2a: /* Left Shift */
1482 case 0x36: /* Right Shift */
1483 case 0x1d: /* Left CTRL */
1484 case 0x9d: /* Right CTRL */
1485 case 0x38: /* Left ALT */
1486 case 0xb8: /* Right ALT */
1487 if (down)
1488 vs->modifiers_state[keycode] = 1;
1489 else
1490 vs->modifiers_state[keycode] = 0;
1491 break;
5fafdf24 1492 case 0x02 ... 0x0a: /* '1' to '9' keys */
64f5a135
FB		 1493 if (down && vs->modifiers_state[0x1d] && vs->modifiers_state[0x38]) {
1494 /* Reset the modifiers sent to the current console */
1495 reset_keys(vs);
1496 console_select(keycode - 0x02);
1497 return;
1498 }
1499 break;
28a76be8
AL		 1500 case 0x3a: /* CapsLock */
1501 case 0x45: /* NumLock */
7ffb82ca 1502 if (down)
a528b80c
AZ		 1503 vs->modifiers_state[keycode] ^= 1;
1504 break;
1505 }
1506
3a0558b5
GH		 1507 if (vs->vd->lock_key_sync &&
1508 keycode_is_keypad(vs->vd->kbd_layout, keycode)) {
a528b80c
AZ		 1509 /* If the numlock state needs to change then simulate an additional
1510 keypress before sending this one. This will happen if the user
1511 toggles numlock away from the VNC window.
1512 */
753b4053 1513 if (keysym_is_numlock(vs->vd->kbd_layout, sym & 0xFFFF)) {
a528b80c
AZ		 1514 if (!vs->modifiers_state[0x45]) {
1515 vs->modifiers_state[0x45] = 1;
1516 press_key(vs, 0xff7f);
1517 }
1518 } else {
1519 if (vs->modifiers_state[0x45]) {
1520 vs->modifiers_state[0x45] = 0;
1521 press_key(vs, 0xff7f);
1522 }
1523 }
64f5a135 1524 }
24236869 1525
3a0558b5
GH		 1526 if (vs->vd->lock_key_sync &&
1527 ((sym >= 'A' && sym <= 'Z') || (sym >= 'a' && sym <= 'z'))) {
6b132502
GH		 1528 /* If the capslock state needs to change then simulate an additional
1529 keypress before sending this one. This will happen if the user
1530 toggles capslock away from the VNC window.
1531 */
1532 int uppercase = !!(sym >= 'A' && sym <= 'Z');
1533 int shift = !!(vs->modifiers_state[0x2a] | vs->modifiers_state[0x36]);
1534 int capslock = !!(vs->modifiers_state[0x3a]);
1535 if (capslock) {
1536 if (uppercase == shift) {
1537 vs->modifiers_state[0x3a] = 0;
1538 press_key(vs, 0xffe5);
1539 }
1540 } else {
1541 if (uppercase != shift) {
1542 vs->modifiers_state[0x3a] = 1;
1543 press_key(vs, 0xffe5);
1544 }
1545 }
1546 }
1547
64f5a135 1548 if (is_graphic_console()) {
44bb61c8
ST		 1549 if (keycode & SCANCODE_GREY)
1550 kbd_put_keycode(SCANCODE_EMUL0);
64f5a135 1551 if (down)
44bb61c8 1552 kbd_put_keycode(keycode & SCANCODE_KEYCODEMASK);
64f5a135 1553 else
44bb61c8 1554 kbd_put_keycode(keycode | SCANCODE_UP);
64f5a135
FB		 1555 } else {
1556 /* QEMU console emulation */
1557 if (down) {
bb0a18e1 1558 int numlock = vs->modifiers_state[0x45];
64f5a135
FB		 1559 switch (keycode) {
1560 case 0x2a: /* Left Shift */
1561 case 0x36: /* Right Shift */
1562 case 0x1d: /* Left CTRL */
1563 case 0x9d: /* Right CTRL */
1564 case 0x38: /* Left ALT */
1565 case 0xb8: /* Right ALT */
1566 break;
1567 case 0xc8:
1568 kbd_put_keysym(QEMU_KEY_UP);
1569 break;
1570 case 0xd0:
1571 kbd_put_keysym(QEMU_KEY_DOWN);
1572 break;
1573 case 0xcb:
1574 kbd_put_keysym(QEMU_KEY_LEFT);
1575 break;
1576 case 0xcd:
1577 kbd_put_keysym(QEMU_KEY_RIGHT);
1578 break;
1579 case 0xd3:
1580 kbd_put_keysym(QEMU_KEY_DELETE);
1581 break;
1582 case 0xc7:
1583 kbd_put_keysym(QEMU_KEY_HOME);
1584 break;
1585 case 0xcf:
1586 kbd_put_keysym(QEMU_KEY_END);
1587 break;
1588 case 0xc9:
1589 kbd_put_keysym(QEMU_KEY_PAGEUP);
1590 break;
1591 case 0xd1:
1592 kbd_put_keysym(QEMU_KEY_PAGEDOWN);
1593 break;
bb0a18e1
GH		 1594
1595 case 0x47:
1596 kbd_put_keysym(numlock ? '7' : QEMU_KEY_HOME);
1597 break;
1598 case 0x48:
1599 kbd_put_keysym(numlock ? '8' : QEMU_KEY_UP);
1600 break;
1601 case 0x49:
1602 kbd_put_keysym(numlock ? '9' : QEMU_KEY_PAGEUP);
1603 break;
1604 case 0x4b:
1605 kbd_put_keysym(numlock ? '4' : QEMU_KEY_LEFT);
1606 break;
1607 case 0x4c:
1608 kbd_put_keysym('5');
1609 break;
1610 case 0x4d:
1611 kbd_put_keysym(numlock ? '6' : QEMU_KEY_RIGHT);
1612 break;
1613 case 0x4f:
1614 kbd_put_keysym(numlock ? '1' : QEMU_KEY_END);
1615 break;
1616 case 0x50:
1617 kbd_put_keysym(numlock ? '2' : QEMU_KEY_DOWN);
1618 break;
1619 case 0x51:
1620 kbd_put_keysym(numlock ? '3' : QEMU_KEY_PAGEDOWN);
1621 break;
1622 case 0x52:
1623 kbd_put_keysym('0');
1624 break;
1625 case 0x53:
1626 kbd_put_keysym(numlock ? '.' : QEMU_KEY_DELETE);
1627 break;
1628
1629 case 0xb5:
1630 kbd_put_keysym('/');
1631 break;
1632 case 0x37:
1633 kbd_put_keysym('*');
1634 break;
1635 case 0x4a:
1636 kbd_put_keysym('-');
1637 break;
1638 case 0x4e:
1639 kbd_put_keysym('+');
1640 break;
1641 case 0x9c:
1642 kbd_put_keysym('\n');
1643 break;
1644
64f5a135
FB		 1645 default:
1646 kbd_put_keysym(sym);
1647 break;
1648 }
1649 }
1650 }
24236869
FB		 1651}
1652
bdbd7676
FB		 1653static void key_event(VncState *vs, int down, uint32_t sym)
1654{
9ca313aa 1655 int keycode;
4a93fe17 1656 int lsym = sym;
9ca313aa 1657
4a93fe17
GH		 1658 if (lsym >= 'A' && lsym <= 'Z' && is_graphic_console()) {
1659 lsym = lsym - 'A' + 'a';
1660 }
9ca313aa 1661
44bb61c8 1662 keycode = keysym2scancode(vs->vd->kbd_layout, lsym & 0xFFFF) & SCANCODE_KEYMASK;
9ca313aa
AL		 1663 do_key_event(vs, down, keycode, sym);
1664}
1665
1666static void ext_key_event(VncState *vs, int down,
1667 uint32_t sym, uint16_t keycode)
1668{
1669 /* if the user specifies a keyboard layout, always use it */
1670 if (keyboard_layout)
1671 key_event(vs, down, sym);
1672 else
1673 do_key_event(vs, down, keycode, sym);
bdbd7676
FB		 1674}
1675
24236869 1676static void framebuffer_update_request(VncState *vs, int incremental,
28a76be8
AL		 1677 int x_position, int y_position,
1678 int w, int h)
24236869 1679{
0e1f5a0c
AL		 1680 if (y_position > ds_get_height(vs->ds))
1681 y_position = ds_get_height(vs->ds);
0e1f5a0c
AL		 1682 if (y_position + h >= ds_get_height(vs->ds))
1683 h = ds_get_height(vs->ds) - y_position;
cf2d385c 1684
24236869
FB		 1685 int i;
1686 vs->need_update = 1;
1687 if (!incremental) {
24cf0a6e 1688 vs->force_update = 1;
28a76be8 1689 for (i = 0; i < h; i++) {
1fc62412 1690 vnc_set_bits(vs->dirty[y_position + i],
0e1f5a0c 1691 (ds_get_width(vs->ds) / 16), VNC_DIRTY_WORDS);
28a76be8 1692 }
24236869
FB		 1693 }
1694}
1695
9ca313aa
AL		 1696static void send_ext_key_event_ack(VncState *vs)
1697{
bd023f95 1698 vnc_lock_output(vs);
46a183da 1699 vnc_write_u8(vs, VNC_MSG_SERVER_FRAMEBUFFER_UPDATE);
9ca313aa
AL		 1700 vnc_write_u8(vs, 0);
1701 vnc_write_u16(vs, 1);
29fa4ed9
AL		 1702 vnc_framebuffer_update(vs, 0, 0, ds_get_width(vs->ds), ds_get_height(vs->ds),
1703 VNC_ENCODING_EXT_KEY_EVENT);
bd023f95 1704 vnc_unlock_output(vs);
9ca313aa
AL		 1705 vnc_flush(vs);
1706}
1707
429a8ed3 1708static void send_ext_audio_ack(VncState *vs)
1709{
bd023f95 1710 vnc_lock_output(vs);
46a183da 1711 vnc_write_u8(vs, VNC_MSG_SERVER_FRAMEBUFFER_UPDATE);
429a8ed3 1712 vnc_write_u8(vs, 0);
1713 vnc_write_u16(vs, 1);
29fa4ed9
AL		 1714 vnc_framebuffer_update(vs, 0, 0, ds_get_width(vs->ds), ds_get_height(vs->ds),
1715 VNC_ENCODING_AUDIO);
bd023f95 1716 vnc_unlock_output(vs);
429a8ed3 1717 vnc_flush(vs);
1718}
1719
24236869
FB		 1720static void set_encodings(VncState *vs, int32_t *encodings, size_t n_encodings)
1721{
1722 int i;
29fa4ed9 1723 unsigned int enc = 0;
24236869 1724
29fa4ed9 1725 vs->features = 0;
a9f20d31 1726 vs->vnc_encoding = 0;
d1af0e05
CC		 1727 vs->tight.compression = 9;
1728 vs->tight.quality = -1; /* Lossless by default */
564c337e 1729 vs->absolute = -1;
24236869 1730
8a0f0d0c
CC		 1731 /*
1732 * Start from the end because the encodings are sent in order of preference.
1733 * This way the prefered encoding (first encoding defined in the array)
1734 * will be set at the end of the loop.
1735 */
24236869 1736 for (i = n_encodings - 1; i >= 0; i--) {
29fa4ed9
AL		 1737 enc = encodings[i];
1738 switch (enc) {
1739 case VNC_ENCODING_RAW:
a9f20d31 1740 vs->vnc_encoding = enc;
29fa4ed9
AL		 1741 break;
1742 case VNC_ENCODING_COPYRECT:
753b4053 1743 vs->features |= VNC_FEATURE_COPYRECT_MASK;
29fa4ed9
AL		 1744 break;
1745 case VNC_ENCODING_HEXTILE:
1746 vs->features |= VNC_FEATURE_HEXTILE_MASK;
a9f20d31 1747 vs->vnc_encoding = enc;
29fa4ed9 1748 break;
380282b0
CC		 1749 case VNC_ENCODING_TIGHT:
1750 vs->features |= VNC_FEATURE_TIGHT_MASK;
1751 vs->vnc_encoding = enc;
1752 break;
efe556ad
CC		 1753 case VNC_ENCODING_TIGHT_PNG:
1754 vs->features |= VNC_FEATURE_TIGHT_PNG_MASK;
1755 vs->vnc_encoding = enc;
1756 break;
059cef40
AL		 1757 case VNC_ENCODING_ZLIB:
1758 vs->features |= VNC_FEATURE_ZLIB_MASK;
a9f20d31 1759 vs->vnc_encoding = enc;
059cef40 1760 break;
29fa4ed9
AL		 1761 case VNC_ENCODING_DESKTOPRESIZE:
1762 vs->features |= VNC_FEATURE_RESIZE_MASK;
1763 break;
1764 case VNC_ENCODING_POINTER_TYPE_CHANGE:
1765 vs->features |= VNC_FEATURE_POINTER_TYPE_CHANGE_MASK;
1766 break;
d467b679
GH		 1767 case VNC_ENCODING_RICH_CURSOR:
1768 vs->features |= VNC_FEATURE_RICH_CURSOR_MASK;
1769 break;
29fa4ed9 1770 case VNC_ENCODING_EXT_KEY_EVENT:
9ca313aa
AL		 1771 send_ext_key_event_ack(vs);
1772 break;
29fa4ed9 1773 case VNC_ENCODING_AUDIO:
429a8ed3 1774 send_ext_audio_ack(vs);
1775 break;
29fa4ed9
AL		 1776 case VNC_ENCODING_WMVi:
1777 vs->features |= VNC_FEATURE_WMVI_MASK;
ca4cca4d 1778 break;
fb437313 1779 case VNC_ENCODING_COMPRESSLEVEL0 ... VNC_ENCODING_COMPRESSLEVEL0 + 9:
d1af0e05 1780 vs->tight.compression = (enc & 0x0F);
fb437313
AL		 1781 break;
1782 case VNC_ENCODING_QUALITYLEVEL0 ... VNC_ENCODING_QUALITYLEVEL0 + 9:
d1af0e05 1783 vs->tight.quality = (enc & 0x0F);
fb437313 1784 break;
29fa4ed9
AL		 1785 default:
1786 VNC_DEBUG("Unknown encoding: %d (0x%.8x): %d\n", i, enc, enc);
1787 break;
1788 }
24236869 1789 }
6356e472 1790 vnc_desktop_resize(vs);
0684bf1b 1791 check_pointer_type_change(&vs->mouse_mode_notifier);
24236869
FB		 1792}
1793
6cec5487
AL		 1794static void set_pixel_conversion(VncState *vs)
1795{
1796 if ((vs->clientds.flags & QEMU_BIG_ENDIAN_FLAG) ==
1797 (vs->ds->surface->flags & QEMU_BIG_ENDIAN_FLAG) &&
1798 !memcmp(&(vs->clientds.pf), &(vs->ds->surface->pf), sizeof(PixelFormat))) {
1799 vs->write_pixels = vnc_write_pixels_copy;
70a4568f 1800 vnc_hextile_set_pixel_conversion(vs, 0);
6cec5487
AL		 1801 } else {
1802 vs->write_pixels = vnc_write_pixels_generic;
70a4568f 1803 vnc_hextile_set_pixel_conversion(vs, 1);
6cec5487
AL		 1804 }
1805}
1806
24236869 1807static void set_pixel_format(VncState *vs,
28a76be8
AL		 1808 int bits_per_pixel, int depth,
1809 int big_endian_flag, int true_color_flag,
1810 int red_max, int green_max, int blue_max,
1811 int red_shift, int green_shift, int blue_shift)
24236869 1812{
3512779a 1813 if (!true_color_flag) {
28a76be8 1814 vnc_client_error(vs);
3512779a
FB		 1815 return;
1816 }
24236869 1817
1fc62412 1818 vs->clientds = *(vs->vd->guest.ds);
6cec5487 1819 vs->clientds.pf.rmax = red_max;
90a1e3c0 1820 count_bits(vs->clientds.pf.rbits, red_max);
6cec5487
AL		 1821 vs->clientds.pf.rshift = red_shift;
1822 vs->clientds.pf.rmask = red_max << red_shift;
1823 vs->clientds.pf.gmax = green_max;
90a1e3c0 1824 count_bits(vs->clientds.pf.gbits, green_max);
6cec5487
AL		 1825 vs->clientds.pf.gshift = green_shift;
1826 vs->clientds.pf.gmask = green_max << green_shift;
1827 vs->clientds.pf.bmax = blue_max;
90a1e3c0 1828 count_bits(vs->clientds.pf.bbits, blue_max);
6cec5487
AL		 1829 vs->clientds.pf.bshift = blue_shift;
1830 vs->clientds.pf.bmask = blue_max << blue_shift;
1831 vs->clientds.pf.bits_per_pixel = bits_per_pixel;
1832 vs->clientds.pf.bytes_per_pixel = bits_per_pixel / 8;
1833 vs->clientds.pf.depth = bits_per_pixel == 32 ? 24 : bits_per_pixel;
1834 vs->clientds.flags = big_endian_flag ? QEMU_BIG_ENDIAN_FLAG : 0x00;
1835
1836 set_pixel_conversion(vs);
24236869
FB		 1837
1838 vga_hw_invalidate();
1839 vga_hw_update();
1840}
1841
ca4cca4d
AL		 1842static void pixel_format_message (VncState *vs) {
1843 char pad[3] = { 0, 0, 0 };
1844
6cec5487
AL		 1845 vnc_write_u8(vs, vs->ds->surface->pf.bits_per_pixel); /* bits-per-pixel */
1846 vnc_write_u8(vs, vs->ds->surface->pf.depth); /* depth */
ca4cca4d 1847
e2542fe2 1848#ifdef HOST_WORDS_BIGENDIAN
ca4cca4d
AL		 1849 vnc_write_u8(vs, 1); /* big-endian-flag */
1850#else
1851 vnc_write_u8(vs, 0); /* big-endian-flag */
1852#endif
1853 vnc_write_u8(vs, 1); /* true-color-flag */
6cec5487
AL		 1854 vnc_write_u16(vs, vs->ds->surface->pf.rmax); /* red-max */
1855 vnc_write_u16(vs, vs->ds->surface->pf.gmax); /* green-max */
1856 vnc_write_u16(vs, vs->ds->surface->pf.bmax); /* blue-max */
1857 vnc_write_u8(vs, vs->ds->surface->pf.rshift); /* red-shift */
1858 vnc_write_u8(vs, vs->ds->surface->pf.gshift); /* green-shift */
1859 vnc_write_u8(vs, vs->ds->surface->pf.bshift); /* blue-shift */
70a4568f
CC		 1860
1861 vnc_hextile_set_pixel_conversion(vs, 0);
1862
6cec5487 1863 vs->clientds = *(vs->ds->surface);
3cded540 1864 vs->clientds.flags &= ~QEMU_ALLOCATED_FLAG;
ca4cca4d
AL		 1865 vs->write_pixels = vnc_write_pixels_copy;
1866
1867 vnc_write(vs, pad, 3); /* padding */
1868}
1869
7d957bd8
AL		 1870static void vnc_dpy_setdata(DisplayState *ds)
1871{
1872 /* We don't have to do anything */
1873}
1874
753b4053 1875static void vnc_colordepth(VncState *vs)
7eac3a87 1876{
753b4053 1877 if (vnc_has_feature(vs, VNC_FEATURE_WMVI)) {
ca4cca4d 1878 /* Sending a WMVi message to notify the client*/
bd023f95 1879 vnc_lock_output(vs);
46a183da 1880 vnc_write_u8(vs, VNC_MSG_SERVER_FRAMEBUFFER_UPDATE);
ca4cca4d
AL		 1881 vnc_write_u8(vs, 0);
1882 vnc_write_u16(vs, 1); /* number of rects */
753b4053
AL		 1883 vnc_framebuffer_update(vs, 0, 0, ds_get_width(vs->ds),
1884 ds_get_height(vs->ds), VNC_ENCODING_WMVi);
ca4cca4d 1885 pixel_format_message(vs);
bd023f95 1886 vnc_unlock_output(vs);
ca4cca4d 1887 vnc_flush(vs);
7eac3a87 1888 } else {
6cec5487 1889 set_pixel_conversion(vs);
7eac3a87
AL		 1890 }
1891}
1892
60fe76f3 1893static int protocol_client_msg(VncState *vs, uint8_t *data, size_t len)
24236869
FB		 1894{
1895 int i;
1896 uint16_t limit;
2430ffe4
SS		 1897 VncDisplay *vd = vs->vd;
1898
1899 if (data[0] > 3) {
1900 vd->timer_interval = VNC_REFRESH_INTERVAL_BASE;
1901 if (!qemu_timer_expired(vd->timer, qemu_get_clock(rt_clock) + vd->timer_interval))
1902 qemu_mod_timer(vd->timer, qemu_get_clock(rt_clock) + vd->timer_interval);
1903 }
24236869
FB		 1904
1905 switch (data[0]) {
46a183da 1906 case VNC_MSG_CLIENT_SET_PIXEL_FORMAT:
28a76be8
AL		 1907 if (len == 1)
1908 return 20;
1909
1910 set_pixel_format(vs, read_u8(data, 4), read_u8(data, 5),
1911 read_u8(data, 6), read_u8(data, 7),
1912 read_u16(data, 8), read_u16(data, 10),
1913 read_u16(data, 12), read_u8(data, 14),
1914 read_u8(data, 15), read_u8(data, 16));
1915 break;
46a183da 1916 case VNC_MSG_CLIENT_SET_ENCODINGS:
28a76be8
AL		 1917 if (len == 1)
1918 return 4;
24236869 1919
28a76be8 1920 if (len == 4) {
69dd5c9f
AL		 1921 limit = read_u16(data, 2);
1922 if (limit > 0)
1923 return 4 + (limit * 4);
1924 } else
1925 limit = read_u16(data, 2);
24236869 1926
28a76be8
AL		 1927 for (i = 0; i < limit; i++) {
1928 int32_t val = read_s32(data, 4 + (i * 4));
1929 memcpy(data + 4 + (i * 4), &val, sizeof(val));
1930 }
24236869 1931
28a76be8
AL		 1932 set_encodings(vs, (int32_t *)(data + 4), limit);
1933 break;
46a183da 1934 case VNC_MSG_CLIENT_FRAMEBUFFER_UPDATE_REQUEST:
28a76be8
AL		 1935 if (len == 1)
1936 return 10;
24236869 1937
28a76be8
AL		 1938 framebuffer_update_request(vs,
1939 read_u8(data, 1), read_u16(data, 2), read_u16(data, 4),
1940 read_u16(data, 6), read_u16(data, 8));
1941 break;
46a183da 1942 case VNC_MSG_CLIENT_KEY_EVENT:
28a76be8
AL		 1943 if (len == 1)
1944 return 8;
24236869 1945
28a76be8
AL		 1946 key_event(vs, read_u8(data, 1), read_u32(data, 4));
1947 break;
46a183da 1948 case VNC_MSG_CLIENT_POINTER_EVENT:
28a76be8
AL		 1949 if (len == 1)
1950 return 6;
24236869 1951
28a76be8
AL		 1952 pointer_event(vs, read_u8(data, 1), read_u16(data, 2), read_u16(data, 4));
1953 break;
46a183da 1954 case VNC_MSG_CLIENT_CUT_TEXT:
28a76be8
AL		 1955 if (len == 1)
1956 return 8;
24236869 1957
28a76be8 1958 if (len == 8) {
baa7666c
TS		 1959 uint32_t dlen = read_u32(data, 4);
1960 if (dlen > 0)
1961 return 8 + dlen;
1962 }
24236869 1963
28a76be8
AL		 1964 client_cut_text(vs, read_u32(data, 4), data + 8);
1965 break;
46a183da 1966 case VNC_MSG_CLIENT_QEMU:
9ca313aa
AL		 1967 if (len == 1)
1968 return 2;
1969
1970 switch (read_u8(data, 1)) {
46a183da 1971 case VNC_MSG_CLIENT_QEMU_EXT_KEY_EVENT:
9ca313aa
AL		 1972 if (len == 2)
1973 return 12;
1974
1975 ext_key_event(vs, read_u16(data, 2),
1976 read_u32(data, 4), read_u32(data, 8));
1977 break;
46a183da 1978 case VNC_MSG_CLIENT_QEMU_AUDIO:
429a8ed3 1979 if (len == 2)
1980 return 4;
1981
1982 switch (read_u16 (data, 2)) {
46a183da 1983 case VNC_MSG_CLIENT_QEMU_AUDIO_ENABLE:
429a8ed3 1984 audio_add(vs);
1985 break;
46a183da 1986 case VNC_MSG_CLIENT_QEMU_AUDIO_DISABLE:
429a8ed3 1987 audio_del(vs);
1988 break;
46a183da 1989 case VNC_MSG_CLIENT_QEMU_AUDIO_SET_FORMAT:
429a8ed3 1990 if (len == 4)
1991 return 10;
1992 switch (read_u8(data, 4)) {
1993 case 0: vs->as.fmt = AUD_FMT_U8; break;
1994 case 1: vs->as.fmt = AUD_FMT_S8; break;
1995 case 2: vs->as.fmt = AUD_FMT_U16; break;
1996 case 3: vs->as.fmt = AUD_FMT_S16; break;
1997 case 4: vs->as.fmt = AUD_FMT_U32; break;
1998 case 5: vs->as.fmt = AUD_FMT_S32; break;
1999 default:
2000 printf("Invalid audio format %d\n", read_u8(data, 4));
2001 vnc_client_error(vs);
2002 break;
2003 }
2004 vs->as.nchannels = read_u8(data, 5);
2005 if (vs->as.nchannels != 1 && vs->as.nchannels != 2) {
2006 printf("Invalid audio channel coount %d\n",
2007 read_u8(data, 5));
2008 vnc_client_error(vs);
2009 break;
2010 }
2011 vs->as.freq = read_u32(data, 6);
2012 break;
2013 default:
2014 printf ("Invalid audio message %d\n", read_u8(data, 4));
2015 vnc_client_error(vs);
2016 break;
2017 }
2018 break;
2019
9ca313aa
AL		 2020 default:
2021 printf("Msg: %d\n", read_u16(data, 0));
2022 vnc_client_error(vs);
2023 break;
2024 }
2025 break;
24236869 2026 default:
28a76be8
AL		 2027 printf("Msg: %d\n", data[0]);
2028 vnc_client_error(vs);
2029 break;
24236869 2030 }
5fafdf24 2031
24236869
FB		 2032 vnc_read_when(vs, protocol_client_msg, 1);
2033 return 0;
2034}
2035
60fe76f3 2036static int protocol_client_init(VncState *vs, uint8_t *data, size_t len)
24236869 2037{
c35734b2
TS		 2038 char buf[1024];
2039 int size;
24236869 2040
5862d195
GH		 2041 vs->client_width = ds_get_width(vs->ds);
2042 vs->client_height = ds_get_height(vs->ds);
2043 vnc_write_u16(vs, vs->client_width);
2044 vnc_write_u16(vs, vs->client_height);
24236869 2045
ca4cca4d 2046 pixel_format_message(vs);
24236869 2047
c35734b2
TS		 2048 if (qemu_name)
2049 size = snprintf(buf, sizeof(buf), "QEMU (%s)", qemu_name);
2050 else
2051 size = snprintf(buf, sizeof(buf), "QEMU");
2052
2053 vnc_write_u32(vs, size);
2054 vnc_write(vs, buf, size);
24236869
FB		 2055 vnc_flush(vs);
2056
4a80dba3 2057 vnc_client_cache_auth(vs);
0d2ed46a 2058 vnc_qmp_event(vs, QEVENT_VNC_INITIALIZED);
4a80dba3 2059
24236869
FB		 2060 vnc_read_when(vs, protocol_client_msg, 1);
2061
2062 return 0;
2063}
2064
5fb6c7a8
AL		 2065void start_client_init(VncState *vs)
2066{
2067 vnc_read_when(vs, protocol_client_init, 1);
2068}
2069
70848515
TS		 2070static void make_challenge(VncState *vs)
2071{
2072 int i;
2073
2074 srand(time(NULL)+getpid()+getpid()*987654+rand());
2075
2076 for (i = 0 ; i < sizeof(vs->challenge) ; i++)
2077 vs->challenge[i] = (int) (256.0*rand()/(RAND_MAX+1.0));
2078}
2079
60fe76f3 2080static int protocol_client_auth_vnc(VncState *vs, uint8_t *data, size_t len)
70848515 2081{
60fe76f3 2082 unsigned char response[VNC_AUTH_CHALLENGE_SIZE];
70848515 2083 int i, j, pwlen;
60fe76f3 2084 unsigned char key[8];
70848515 2085
753b4053 2086 if (!vs->vd->password || !vs->vd->password[0]) {
28a76be8 2087 VNC_DEBUG("No password configured on server");
6bffdf0f 2088 goto reject;
70848515
TS		 2089 }
2090
2091 memcpy(response, vs->challenge, VNC_AUTH_CHALLENGE_SIZE);
2092
2093 /* Calculate the expected challenge response */
753b4053 2094 pwlen = strlen(vs->vd->password);
70848515 2095 for (i=0; i<sizeof(key); i++)
753b4053 2096 key[i] = i<pwlen ? vs->vd->password[i] : 0;
70848515
TS		 2097 deskey(key, EN0);
2098 for (j = 0; j < VNC_AUTH_CHALLENGE_SIZE; j += 8)
2099 des(response+j, response+j);
2100
2101 /* Compare expected vs actual challenge response */
2102 if (memcmp(response, data, VNC_AUTH_CHALLENGE_SIZE) != 0) {
28a76be8 2103 VNC_DEBUG("Client challenge reponse did not match\n");
6bffdf0f 2104 goto reject;
70848515 2105 } else {
28a76be8
AL		 2106 VNC_DEBUG("Accepting VNC challenge response\n");
2107 vnc_write_u32(vs, 0); /* Accept auth */
2108 vnc_flush(vs);
70848515 2109
5fb6c7a8 2110 start_client_init(vs);
70848515
TS		 2111 }
2112 return 0;
6bffdf0f
GH		 2113
2114reject:
2115 vnc_write_u32(vs, 1); /* Reject auth */
2116 if (vs->minor >= 8) {
2117 static const char err[] = "Authentication failed";
2118 vnc_write_u32(vs, sizeof(err));
2119 vnc_write(vs, err, sizeof(err));
2120 }
2121 vnc_flush(vs);
2122 vnc_client_error(vs);
2123 return 0;
70848515
TS		 2124}
2125
5fb6c7a8 2126void start_auth_vnc(VncState *vs)
70848515
TS		 2127{
2128 make_challenge(vs);
2129 /* Send client a 'random' challenge */
2130 vnc_write(vs, vs->challenge, sizeof(vs->challenge));
2131 vnc_flush(vs);
2132
2133 vnc_read_when(vs, protocol_client_auth_vnc, sizeof(vs->challenge));
469b15c6
TS		 2134}
2135
2136
60fe76f3 2137static int protocol_client_auth(VncState *vs, uint8_t *data, size_t len)
70848515
TS		 2138{
2139 /* We only advertise 1 auth scheme at a time, so client
2140 * must pick the one we sent. Verify this */
753b4053 2141 if (data[0] != vs->vd->auth) { /* Reject auth */
1263b7d6 2142 VNC_DEBUG("Reject auth %d because it didn't match advertized\n", (int)data[0]);
70848515
TS		 2143 vnc_write_u32(vs, 1);
2144 if (vs->minor >= 8) {
2145 static const char err[] = "Authentication failed";
2146 vnc_write_u32(vs, sizeof(err));
2147 vnc_write(vs, err, sizeof(err));
2148 }
2149 vnc_client_error(vs);
2150 } else { /* Accept requested auth */
2151 VNC_DEBUG("Client requested auth %d\n", (int)data[0]);
753b4053 2152 switch (vs->vd->auth) {
70848515
TS		 2153 case VNC_AUTH_NONE:
2154 VNC_DEBUG("Accept auth none\n");
a26c97ad
AZ		 2155 if (vs->minor >= 8) {
2156 vnc_write_u32(vs, 0); /* Accept auth completion */
2157 vnc_flush(vs);
2158 }
5fb6c7a8 2159 start_client_init(vs);
70848515
TS		 2160 break;
2161
2162 case VNC_AUTH_VNC:
2163 VNC_DEBUG("Start VNC auth\n");
5fb6c7a8
AL		 2164 start_auth_vnc(vs);
2165 break;
70848515 2166
eb38c52c 2167#ifdef CONFIG_VNC_TLS
8d5d2d4c
TS		 2168 case VNC_AUTH_VENCRYPT:
2169 VNC_DEBUG("Accept VeNCrypt auth\n");;
5fb6c7a8
AL		 2170 start_auth_vencrypt(vs);
2171 break;
8d5d2d4c
TS		 2172#endif /* CONFIG_VNC_TLS */
2173
2f9606b3
AL		 2174#ifdef CONFIG_VNC_SASL
2175 case VNC_AUTH_SASL:
2176 VNC_DEBUG("Accept SASL auth\n");
2177 start_auth_sasl(vs);
2178 break;
2179#endif /* CONFIG_VNC_SASL */
2180
70848515 2181 default: /* Should not be possible, but just in case */
1263b7d6 2182 VNC_DEBUG("Reject auth %d server code bug\n", vs->vd->auth);
70848515
TS		 2183 vnc_write_u8(vs, 1);
2184 if (vs->minor >= 8) {
2185 static const char err[] = "Authentication failed";
2186 vnc_write_u32(vs, sizeof(err));
2187 vnc_write(vs, err, sizeof(err));
2188 }
2189 vnc_client_error(vs);
2190 }
2191 }
2192 return 0;
2193}
2194
60fe76f3 2195static int protocol_version(VncState *vs, uint8_t *version, size_t len)
24236869
FB		 2196{
2197 char local[13];
24236869
FB		 2198
2199 memcpy(local, version, 12);
2200 local[12] = 0;
2201
70848515 2202 if (sscanf(local, "RFB %03d.%03d\n", &vs->major, &vs->minor) != 2) {
28a76be8
AL		 2203 VNC_DEBUG("Malformed protocol version %s\n", local);
2204 vnc_client_error(vs);
2205 return 0;
24236869 2206 }
70848515
TS		 2207 VNC_DEBUG("Client request protocol version %d.%d\n", vs->major, vs->minor);
2208 if (vs->major != 3 ||
28a76be8
AL		 2209 (vs->minor != 3 &&
2210 vs->minor != 4 &&
2211 vs->minor != 5 &&
2212 vs->minor != 7 &&
2213 vs->minor != 8)) {
2214 VNC_DEBUG("Unsupported client version\n");
2215 vnc_write_u32(vs, VNC_AUTH_INVALID);
2216 vnc_flush(vs);
2217 vnc_client_error(vs);
2218 return 0;
70848515 2219 }
b0566f4f 2220 /* Some broken clients report v3.4 or v3.5, which spec requires to be treated
70848515
TS		 2221 * as equivalent to v3.3 by servers
2222 */
b0566f4f 2223 if (vs->minor == 4 || vs->minor == 5)
28a76be8 2224 vs->minor = 3;
70848515
TS		 2225
2226 if (vs->minor == 3) {
28a76be8 2227 if (vs->vd->auth == VNC_AUTH_NONE) {
70848515 2228 VNC_DEBUG("Tell client auth none\n");
753b4053 2229 vnc_write_u32(vs, vs->vd->auth);
70848515 2230 vnc_flush(vs);
28a76be8 2231 start_client_init(vs);
753b4053 2232 } else if (vs->vd->auth == VNC_AUTH_VNC) {
70848515 2233 VNC_DEBUG("Tell client VNC auth\n");
753b4053 2234 vnc_write_u32(vs, vs->vd->auth);
70848515
TS		 2235 vnc_flush(vs);
2236 start_auth_vnc(vs);
2237 } else {
753b4053 2238 VNC_DEBUG("Unsupported auth %d for protocol 3.3\n", vs->vd->auth);
70848515
TS		 2239 vnc_write_u32(vs, VNC_AUTH_INVALID);
2240 vnc_flush(vs);
2241 vnc_client_error(vs);
2242 }
2243 } else {
28a76be8
AL		 2244 VNC_DEBUG("Telling client we support auth %d\n", vs->vd->auth);
2245 vnc_write_u8(vs, 1); /* num auth */
2246 vnc_write_u8(vs, vs->vd->auth);
2247 vnc_read_when(vs, protocol_client_auth, 1);
2248 vnc_flush(vs);
70848515 2249 }
24236869
FB		 2250
2251 return 0;
2252}
2253
1fc62412
SS		 2254static int vnc_refresh_server_surface(VncDisplay *vd)
2255{
2256 int y;
2257 uint8_t *guest_row;
2258 uint8_t *server_row;
2259 int cmp_bytes;
2260 uint32_t width_mask[VNC_DIRTY_WORDS];
41b4bef6 2261 VncState *vs;
1fc62412
SS		 2262 int has_dirty = 0;
2263
2264 /*
2265 * Walk through the guest dirty map.
2266 * Check and copy modified bits from guest to server surface.
2267 * Update server dirty map.
2268 */
2269 vnc_set_bits(width_mask, (ds_get_width(vd->ds) / 16), VNC_DIRTY_WORDS);
2270 cmp_bytes = 16 * ds_get_bytes_per_pixel(vd->ds);
2271 guest_row = vd->guest.ds->data;
2272 server_row = vd->server->data;
2273 for (y = 0; y < vd->guest.ds->height; y++) {
2274 if (vnc_and_bits(vd->guest.dirty[y], width_mask, VNC_DIRTY_WORDS)) {
2275 int x;
2276 uint8_t *guest_ptr;
2277 uint8_t *server_ptr;
2278
2279 guest_ptr = guest_row;
2280 server_ptr = server_row;
2281
2282 for (x = 0; x < vd->guest.ds->width;
2283 x += 16, guest_ptr += cmp_bytes, server_ptr += cmp_bytes) {
2284 if (!vnc_get_bit(vd->guest.dirty[y], (x / 16)))
2285 continue;
2286 vnc_clear_bit(vd->guest.dirty[y], (x / 16));
2287 if (memcmp(server_ptr, guest_ptr, cmp_bytes) == 0)
2288 continue;
2289 memcpy(server_ptr, guest_ptr, cmp_bytes);
41b4bef6 2290 QTAILQ_FOREACH(vs, &vd->clients, next) {
1fc62412 2291 vnc_set_bit(vs->dirty[y], (x / 16));
1fc62412
SS		 2292 }
2293 has_dirty++;
2294 }
2295 }
2296 guest_row += ds_get_linesize(vd->ds);
2297 server_row += ds_get_linesize(vd->ds);
2298 }
2299 return has_dirty;
2300}
2301
703bc68f
SS		 2302static void vnc_refresh(void *opaque)
2303{
2304 VncDisplay *vd = opaque;
41b4bef6
AS		 2305 VncState *vs, *vn;
2306 int has_dirty, rects = 0;
703bc68f
SS		 2307
2308 vga_hw_update();
2309
bd023f95
CC		 2310 if (vnc_trylock_display(vd)) {
2311 vd->timer_interval = VNC_REFRESH_INTERVAL_BASE;
2312 qemu_mod_timer(vd->timer, qemu_get_clock(rt_clock) +
2313 vd->timer_interval);
2314 return;
2315 }
2316
1fc62412 2317 has_dirty = vnc_refresh_server_surface(vd);
bd023f95 2318 vnc_unlock_display(vd);
1fc62412 2319
41b4bef6 2320 QTAILQ_FOREACH_SAFE(vs, &vd->clients, next, vn) {
2430ffe4 2321 rects += vnc_update_client(vs, has_dirty);
6185c578 2322 /* vs might be free()ed here */
703bc68f 2323 }
bd023f95 2324
83755c17
SS		 2325 /* vd->timer could be NULL now if the last client disconnected,
2326 * in this case don't update the timer */
2327 if (vd->timer == NULL)
2328 return;
703bc68f 2329
2430ffe4
SS		 2330 if (has_dirty && rects) {
2331 vd->timer_interval /= 2;
2332 if (vd->timer_interval < VNC_REFRESH_INTERVAL_BASE)
2333 vd->timer_interval = VNC_REFRESH_INTERVAL_BASE;
2334 } else {
2335 vd->timer_interval += VNC_REFRESH_INTERVAL_INC;
2336 if (vd->timer_interval > VNC_REFRESH_INTERVAL_MAX)
2337 vd->timer_interval = VNC_REFRESH_INTERVAL_MAX;
2338 }
2339 qemu_mod_timer(vd->timer, qemu_get_clock(rt_clock) + vd->timer_interval);
703bc68f
SS		 2340}
2341
2342static void vnc_init_timer(VncDisplay *vd)
2343{
2430ffe4 2344 vd->timer_interval = VNC_REFRESH_INTERVAL_BASE;
41b4bef6 2345 if (vd->timer == NULL && !QTAILQ_EMPTY(&vd->clients)) {
703bc68f 2346 vd->timer = qemu_new_timer(rt_clock, vnc_refresh, vd);
1fc62412 2347 vnc_refresh(vd);
703bc68f
SS		 2348 }
2349}
2350
2351static void vnc_remove_timer(VncDisplay *vd)
2352{
41b4bef6 2353 if (vd->timer != NULL && QTAILQ_EMPTY(&vd->clients)) {
703bc68f
SS		 2354 qemu_del_timer(vd->timer);
2355 qemu_free_timer(vd->timer);
2356 vd->timer = NULL;
2357 }
2358}
2359
753b4053 2360static void vnc_connect(VncDisplay *vd, int csock)
3aa3eea3 2361{
753b4053
AL		 2362 VncState *vs = qemu_mallocz(sizeof(VncState));
2363 vs->csock = csock;
2364
2365 VNC_DEBUG("New client on socket %d\n", csock);
7d957bd8 2366 dcl->idle = 0;
3aa3eea3
AZ		 2367 socket_set_nonblock(vs->csock);
2368 qemu_set_fd_handler2(vs->csock, NULL, vnc_client_read, NULL, vs);
753b4053 2369
4a80dba3 2370 vnc_client_cache_addr(vs);
586153d9 2371 vnc_qmp_event(vs, QEVENT_VNC_CONNECTED);
4a80dba3 2372
753b4053
AL		 2373 vs->vd = vd;
2374 vs->ds = vd->ds;
753b4053
AL		 2375 vs->last_x = -1;
2376 vs->last_y = -1;
2377
2378 vs->as.freq = 44100;
2379 vs->as.nchannels = 2;
2380 vs->as.fmt = AUD_FMT_S16;
2381 vs->as.endianness = 0;
2382
bd023f95
CC		 2383#ifdef CONFIG_VNC_THREAD
2384 qemu_mutex_init(&vs->output_mutex);
2385#endif
2386
41b4bef6 2387 QTAILQ_INSERT_HEAD(&vd->clients, vs, next);
1fc62412
SS		 2388
2389 vga_hw_update();
2390
3aa3eea3
AZ		 2391 vnc_write(vs, "RFB 003.008\n", 12);
2392 vnc_flush(vs);
2393 vnc_read_when(vs, protocol_version, 12);
53762ddb 2394 reset_keys(vs);
3a0558b5
GH		 2395 if (vs->vd->lock_key_sync)
2396 vs->led = qemu_add_led_event_handler(kbd_leds, vs);
753b4053 2397
37c34d9d
AL		 2398 vs->mouse_mode_notifier.notify = check_pointer_type_change;
2399 qemu_add_mouse_mode_change_notifier(&vs->mouse_mode_notifier);
2400
703bc68f 2401 vnc_init_timer(vd);
1fc62412 2402
198a0039 2403 /* vs might be free()ed here */
3aa3eea3
AZ		 2404}
2405
24236869
FB		 2406static void vnc_listen_read(void *opaque)
2407{
753b4053 2408 VncDisplay *vs = opaque;
24236869
FB		 2409 struct sockaddr_in addr;
2410 socklen_t addrlen = sizeof(addr);
2411
9f60ad50
AZ		 2412 /* Catch-up */
2413 vga_hw_update();
2414
40ff6d7e 2415 int csock = qemu_accept(vs->lsock, (struct sockaddr *)&addr, &addrlen);
753b4053
AL		 2416 if (csock != -1) {
2417 vnc_connect(vs, csock);
24236869
FB		 2418 }
2419}
2420
71cab5ca 2421void vnc_display_init(DisplayState *ds)
24236869 2422{
afd32160 2423 VncDisplay *vs = qemu_mallocz(sizeof(*vs));
24236869 2424
7d957bd8 2425 dcl = qemu_mallocz(sizeof(DisplayChangeListener));
24236869
FB		 2426
2427 ds->opaque = vs;
7d957bd8 2428 dcl->idle = 1;
753b4053 2429 vnc_display = vs;
24236869
FB		 2430
2431 vs->lsock = -1;
24236869
FB		 2432
2433 vs->ds = ds;
41b4bef6 2434 QTAILQ_INIT(&vs->clients);
24236869 2435
9ca313aa 2436 if (keyboard_layout)
0483755a 2437 vs->kbd_layout = init_keyboard_layout(name2keysym, keyboard_layout);
9ca313aa 2438 else
0483755a 2439 vs->kbd_layout = init_keyboard_layout(name2keysym, "en-us");
24236869 2440
24236869 2441 if (!vs->kbd_layout)
28a76be8 2442 exit(1);
24236869 2443
bd023f95
CC		 2444#ifdef CONFIG_VNC_THREAD
2445 qemu_mutex_init(&vs->mutex);
2446 vnc_start_worker_thread();
2447#endif
2448
753b4053 2449 dcl->dpy_copy = vnc_dpy_copy;
7d957bd8
AL		 2450 dcl->dpy_update = vnc_dpy_update;
2451 dcl->dpy_resize = vnc_dpy_resize;
2452 dcl->dpy_setdata = vnc_dpy_setdata;
7d957bd8 2453 register_displaychangelistener(ds, dcl);
d467b679
GH		 2454 ds->mouse_set = vnc_mouse_set;
2455 ds->cursor_define = vnc_dpy_cursor_define;
71cab5ca
TS		 2456}
2457
6f43024c 2458
71cab5ca
TS		 2459void vnc_display_close(DisplayState *ds)
2460{
753b4053 2461 VncDisplay *vs = ds ? (VncDisplay *)ds->opaque : vnc_display;
71cab5ca 2462
452b4d88
AL		 2463 if (!vs)
2464 return;
71cab5ca 2465 if (vs->display) {
28a76be8
AL		 2466 qemu_free(vs->display);
2467 vs->display = NULL;
71cab5ca
TS		 2468 }
2469 if (vs->lsock != -1) {
28a76be8
AL		 2470 qemu_set_fd_handler2(vs->lsock, NULL, NULL, NULL, NULL);
2471 close(vs->lsock);
2472 vs->lsock = -1;
71cab5ca 2473 }
70848515 2474 vs->auth = VNC_AUTH_INVALID;
eb38c52c 2475#ifdef CONFIG_VNC_TLS
8d5d2d4c 2476 vs->subauth = VNC_AUTH_INVALID;
5fb6c7a8 2477 vs->tls.x509verify = 0;
8d5d2d4c 2478#endif
70848515
TS		 2479}
2480
2481int vnc_display_password(DisplayState *ds, const char *password)
2482{
753b4053 2483 VncDisplay *vs = ds ? (VncDisplay *)ds->opaque : vnc_display;
70848515 2484
7ef92331
ZA		 2485 if (!vs) {
2486 return -1;
2487 }
2488
70848515 2489 if (vs->password) {
28a76be8
AL		 2490 qemu_free(vs->password);
2491 vs->password = NULL;
70848515
TS		 2492 }
2493 if (password && password[0]) {
28a76be8
AL		 2494 if (!(vs->password = qemu_strdup(password)))
2495 return -1;
52c18be9
ZA		 2496 if (vs->auth == VNC_AUTH_NONE) {
2497 vs->auth = VNC_AUTH_VNC;
2498 }
2499 } else {
2500 vs->auth = VNC_AUTH_NONE;
70848515
TS		 2501 }
2502
2503 return 0;
71cab5ca
TS		 2504}
2505
f92f8afe
AL		 2506char *vnc_display_local_addr(DisplayState *ds)
2507{
2508 VncDisplay *vs = ds ? (VncDisplay *)ds->opaque : vnc_display;
2509
2510 return vnc_socket_local_addr("%s:%s", vs->lsock);
2511}
2512
70848515 2513int vnc_display_open(DisplayState *ds, const char *display)
71cab5ca 2514{
753b4053 2515 VncDisplay *vs = ds ? (VncDisplay *)ds->opaque : vnc_display;
70848515
TS		 2516 const char *options;
2517 int password = 0;
3aa3eea3 2518 int reverse = 0;
eb38c52c 2519#ifdef CONFIG_VNC_TLS
3a702699 2520 int tls = 0, x509 = 0;
8d5d2d4c 2521#endif
2f9606b3
AL		 2522#ifdef CONFIG_VNC_SASL
2523 int sasl = 0;
2524 int saslErr;
2525#endif
2ded6ad7 2526#if defined(CONFIG_VNC_TLS) || defined(CONFIG_VNC_SASL)
76655d6d 2527 int acl = 0;
2ded6ad7 2528#endif
3a0558b5 2529 int lock_key_sync = 1;
71cab5ca 2530
753b4053 2531 if (!vnc_display)
452b4d88 2532 return -1;
71cab5ca 2533 vnc_display_close(ds);
70848515 2534 if (strcmp(display, "none") == 0)
28a76be8 2535 return 0;
24236869 2536
70848515 2537 if (!(vs->display = strdup(display)))
28a76be8 2538 return -1;
70848515
TS		 2539
2540 options = display;
2541 while ((options = strchr(options, ','))) {
28a76be8
AL		 2542 options++;
2543 if (strncmp(options, "password", 8) == 0) {
2544 password = 1; /* Require password auth */
2545 } else if (strncmp(options, "reverse", 7) == 0) {
2546 reverse = 1;
3a0558b5
GH		 2547 } else if (strncmp(options, "no-lock-key-sync", 9) == 0) {
2548 lock_key_sync = 0;
2f9606b3 2549#ifdef CONFIG_VNC_SASL
28a76be8
AL		 2550 } else if (strncmp(options, "sasl", 4) == 0) {
2551 sasl = 1; /* Require SASL auth */
2f9606b3 2552#endif
eb38c52c 2553#ifdef CONFIG_VNC_TLS
28a76be8
AL		 2554 } else if (strncmp(options, "tls", 3) == 0) {
2555 tls = 1; /* Require TLS */
2556 } else if (strncmp(options, "x509", 4) == 0) {
2557 char *start, *end;
2558 x509 = 1; /* Require x509 certificates */
2559 if (strncmp(options, "x509verify", 10) == 0)
2560 vs->tls.x509verify = 1; /* ...and verify client certs */
2561
2562 /* Now check for 'x509=/some/path' postfix
2563 * and use that to setup x509 certificate/key paths */
2564 start = strchr(options, '=');
2565 end = strchr(options, ',');
2566 if (start && (!end || (start < end))) {
2567 int len = end ? end-(start+1) : strlen(start+1);
2568 char *path = qemu_strndup(start + 1, len);
2569
2570 VNC_DEBUG("Trying certificate path '%s'\n", path);
2571 if (vnc_tls_set_x509_creds_dir(vs, path) < 0) {
2572 fprintf(stderr, "Failed to find x509 certificates/keys in %s\n", path);
2573 qemu_free(path);
2574 qemu_free(vs->display);
2575 vs->display = NULL;
2576 return -1;
2577 }
2578 qemu_free(path);
2579 } else {
2580 fprintf(stderr, "No certificate path provided\n");
2581 qemu_free(vs->display);
2582 vs->display = NULL;
2583 return -1;
2584 }
8d5d2d4c 2585#endif
2ded6ad7 2586#if defined(CONFIG_VNC_TLS) || defined(CONFIG_VNC_SASL)
28a76be8
AL		 2587 } else if (strncmp(options, "acl", 3) == 0) {
2588 acl = 1;
2ded6ad7 2589#endif
6f9c78c1
CC		 2590 } else if (strncmp(options, "lossy", 5) == 0) {
2591 vs->lossy = true;
28a76be8 2592 }
70848515
TS		 2593 }
2594
76655d6d
AL		 2595#ifdef CONFIG_VNC_TLS
2596 if (acl && x509 && vs->tls.x509verify) {
28a76be8
AL		 2597 if (!(vs->tls.acl = qemu_acl_init("vnc.x509dname"))) {
2598 fprintf(stderr, "Failed to create x509 dname ACL\n");
2599 exit(1);
2600 }
76655d6d
AL		 2601 }
2602#endif
2603#ifdef CONFIG_VNC_SASL
2604 if (acl && sasl) {
28a76be8
AL		 2605 if (!(vs->sasl.acl = qemu_acl_init("vnc.username"))) {
2606 fprintf(stderr, "Failed to create username ACL\n");
2607 exit(1);
2608 }
76655d6d
AL		 2609 }
2610#endif
2611
2f9606b3
AL		 2612 /*
2613 * Combinations we support here:
2614 *
2615 * - no-auth (clear text, no auth)
2616 * - password (clear text, weak auth)
2617 * - sasl (encrypt, good auth *IF* using Kerberos via GSSAPI)
2618 * - tls (encrypt, weak anonymous creds, no auth)
2619 * - tls + password (encrypt, weak anonymous creds, weak auth)
2620 * - tls + sasl (encrypt, weak anonymous creds, good auth)
2621 * - tls + x509 (encrypt, good x509 creds, no auth)
2622 * - tls + x509 + password (encrypt, good x509 creds, weak auth)
2623 * - tls + x509 + sasl (encrypt, good x509 creds, good auth)
2624 *
2625 * NB1. TLS is a stackable auth scheme.
2626 * NB2. the x509 schemes have option to validate a client cert dname
2627 */
70848515 2628 if (password) {
eb38c52c 2629#ifdef CONFIG_VNC_TLS
28a76be8
AL		 2630 if (tls) {
2631 vs->auth = VNC_AUTH_VENCRYPT;
2632 if (x509) {
2633 VNC_DEBUG("Initializing VNC server with x509 password auth\n");
2634 vs->subauth = VNC_AUTH_VENCRYPT_X509VNC;
2635 } else {
2636 VNC_DEBUG("Initializing VNC server with TLS password auth\n");
2637 vs->subauth = VNC_AUTH_VENCRYPT_TLSVNC;
2638 }
2639 } else {
2f9606b3 2640#endif /* CONFIG_VNC_TLS */
28a76be8
AL		 2641 VNC_DEBUG("Initializing VNC server with password auth\n");
2642 vs->auth = VNC_AUTH_VNC;
eb38c52c 2643#ifdef CONFIG_VNC_TLS
28a76be8
AL		 2644 vs->subauth = VNC_AUTH_INVALID;
2645 }
2f9606b3
AL		 2646#endif /* CONFIG_VNC_TLS */
2647#ifdef CONFIG_VNC_SASL
2648 } else if (sasl) {
2649#ifdef CONFIG_VNC_TLS
2650 if (tls) {
2651 vs->auth = VNC_AUTH_VENCRYPT;
2652 if (x509) {
28a76be8 2653 VNC_DEBUG("Initializing VNC server with x509 SASL auth\n");
2f9606b3
AL		 2654 vs->subauth = VNC_AUTH_VENCRYPT_X509SASL;
2655 } else {
28a76be8 2656 VNC_DEBUG("Initializing VNC server with TLS SASL auth\n");
2f9606b3
AL		 2657 vs->subauth = VNC_AUTH_VENCRYPT_TLSSASL;
2658 }
2659 } else {
2660#endif /* CONFIG_VNC_TLS */
28a76be8 2661 VNC_DEBUG("Initializing VNC server with SASL auth\n");
2f9606b3
AL		 2662 vs->auth = VNC_AUTH_SASL;
2663#ifdef CONFIG_VNC_TLS
2664 vs->subauth = VNC_AUTH_INVALID;
2665 }
2666#endif /* CONFIG_VNC_TLS */
2667#endif /* CONFIG_VNC_SASL */
70848515 2668 } else {
eb38c52c 2669#ifdef CONFIG_VNC_TLS
28a76be8
AL		 2670 if (tls) {
2671 vs->auth = VNC_AUTH_VENCRYPT;
2672 if (x509) {
2673 VNC_DEBUG("Initializing VNC server with x509 no auth\n");
2674 vs->subauth = VNC_AUTH_VENCRYPT_X509NONE;
2675 } else {
2676 VNC_DEBUG("Initializing VNC server with TLS no auth\n");
2677 vs->subauth = VNC_AUTH_VENCRYPT_TLSNONE;
2678 }
2679 } else {
8d5d2d4c 2680#endif
28a76be8
AL		 2681 VNC_DEBUG("Initializing VNC server with no auth\n");
2682 vs->auth = VNC_AUTH_NONE;
eb38c52c 2683#ifdef CONFIG_VNC_TLS
28a76be8
AL		 2684 vs->subauth = VNC_AUTH_INVALID;
2685 }
8d5d2d4c 2686#endif
70848515 2687 }
24236869 2688
2f9606b3
AL		 2689#ifdef CONFIG_VNC_SASL
2690 if ((saslErr = sasl_server_init(NULL, "qemu")) != SASL_OK) {
2691 fprintf(stderr, "Failed to initialize SASL auth %s",
2692 sasl_errstring(saslErr, NULL, NULL));
2693 free(vs->display);
2694 vs->display = NULL;
2695 return -1;
2696 }
2697#endif
3a0558b5 2698 vs->lock_key_sync = lock_key_sync;
2f9606b3 2699
3aa3eea3 2700 if (reverse) {
9712ecaf
AL		 2701 /* connect to viewer */
2702 if (strncmp(display, "unix:", 5) == 0)
2703 vs->lsock = unix_connect(display+5);
2704 else
2705 vs->lsock = inet_connect(display, SOCK_STREAM);
2706 if (-1 == vs->lsock) {
3aa3eea3
AZ		 2707 free(vs->display);
2708 vs->display = NULL;
2709 return -1;
2710 } else {
753b4053 2711 int csock = vs->lsock;
3aa3eea3 2712 vs->lsock = -1;
753b4053 2713 vnc_connect(vs, csock);
3aa3eea3 2714 }
9712ecaf 2715 return 0;
24236869 2716
9712ecaf
AL		 2717 } else {
2718 /* listen for connects */
2719 char *dpy;
2720 dpy = qemu_malloc(256);
2721 if (strncmp(display, "unix:", 5) == 0) {
bc575e95 2722 pstrcpy(dpy, 256, "unix:");
4a55bfdf 2723 vs->lsock = unix_listen(display+5, dpy+5, 256-5);
9712ecaf
AL		 2724 } else {
2725 vs->lsock = inet_listen(display, dpy, 256, SOCK_STREAM, 5900);
2726 }
2727 if (-1 == vs->lsock) {
2728 free(dpy);
d0513623 2729 return -1;
9712ecaf
AL		 2730 } else {
2731 free(vs->display);
2732 vs->display = dpy;
2733 }
24236869 2734 }
753b4053 2735 return qemu_set_fd_handler2(vs->lsock, NULL, vnc_listen_read, NULL, vs);
24236869 2736}
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