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Revert "vnc: set the right prefered encoding"
[qemu.git] / vnc.c
blob1fb46bdc761894637957ad25659ca5402495b979
1 /*
2 * QEMU VNC display driver
3 *
4 * Copyright (C) 2006 Anthony Liguori <anthony@codemonkey.ws>
5 * Copyright (C) 2006 Fabrice Bellard
6 * Copyright (C) 2009 Red Hat, Inc
7 *
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
27 #include "vnc.h"
28 #include "sysemu.h"
29 #include "qemu_socket.h"
30 #include "qemu-timer.h"
31 #include "acl.h"
32 #include "qemu-objects.h"
33
34 #define VNC_REFRESH_INTERVAL_BASE 30
35 #define VNC_REFRESH_INTERVAL_INC 50
36 #define VNC_REFRESH_INTERVAL_MAX 2000
37
38 #include "vnc_keysym.h"
39 #include "d3des.h"
40
41 #define count_bits(c, v) { \
42 for (c = 0; v; v >>= 1) \
43 { \
44 c += v & 1; \
45 } \
46 }
47
48
49 static VncDisplay *vnc_display; /* needed for info vnc */
50 static DisplayChangeListener *dcl;
51
52 static int vnc_cursor_define(VncState *vs);
53
54 static 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;
61 size_t addrlen;
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
72 /* Enough for the existing format + the 2 vars we're
73 * substituting in. */
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';
78
79 return addr;
80 }
81
82
83 char *vnc_socket_local_addr(const char *format, int fd) {
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
94 char *vnc_socket_remote_addr(const char *format, int fd) {
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
105 static 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));
123 qdict_put(qdict, "family",qstring_from_str(inet_strfamily(sa->ss_family)));
124
125 return 0;
126 }
127
128 static int vnc_server_addr_put(QDict *qdict, int fd)
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
141 static 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
154 static 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";
189 case VNC_AUTH_VENCRYPT_TLSSASL:
190 return "vencrypt+tls+sasl";
191 case VNC_AUTH_VENCRYPT_X509SASL:
192 return "vencrypt+x509+sasl";
193 default:
194 return "vencrypt";
195 }
196 #else
197 return "vencrypt";
198 #endif
199 case VNC_AUTH_SASL:
200 return "sasl";
201 }
202 return "unknown";
203 }
204
205 static 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
215 static void vnc_client_cache_auth(VncState *client)
216 {
217 QDict *qdict;
218
219 if (!client->info) {
220 return;
221 }
222
223 qdict = qobject_to_qdict(client->info);
224
225 #ifdef CONFIG_VNC_TLS
226 if (client->tls.session &&
227 client->tls.dname) {
228 qdict_put(qdict, "x509_dname", qstring_from_str(client->tls.dname));
229 }
230 #endif
231 #ifdef CONFIG_VNC_SASL
232 if (client->sasl.conn &&
233 client->sasl.username) {
234 qdict_put(qdict, "sasl_username",
235 qstring_from_str(client->sasl.username));
236 }
237 #endif
238 }
239
240 static void vnc_client_cache_addr(VncState *client)
241 {
242 QDict *qdict;
243
244 qdict = qdict_new();
245 if (vnc_qdict_remote_addr(qdict, client->csock) < 0) {
246 QDECREF(qdict);
247 /* XXX: how to report the error? */
248 return;
249 }
250
251 client->info = QOBJECT(qdict);
252 }
253
254 static void vnc_qmp_event(VncState *vs, MonitorEvent event)
255 {
256 QDict *server;
257 QObject *data;
258
259 if (!vs->info) {
260 return;
261 }
262
263 server = qdict_new();
264 if (vnc_server_info_put(server) < 0) {
265 QDECREF(server);
266 return;
267 }
268
269 data = qobject_from_jsonf("{ 'client': %p, 'server': %p }",
270 vs->info, QOBJECT(server));
271
272 monitor_protocol_event(event, data);
273
274 qobject_incref(vs->info);
275 qobject_decref(data);
276 }
277
278 static void info_vnc_iter(QObject *obj, void *opaque)
279 {
280 QDict *client;
281 Monitor *mon = opaque;
282
283 client = qobject_to_qdict(obj);
284 monitor_printf(mon, "Client:\n");
285 monitor_printf(mon, " address: %s:%s\n",
286 qdict_get_str(client, "host"),
287 qdict_get_str(client, "service"));
288
289 #ifdef CONFIG_VNC_TLS
290 monitor_printf(mon, " x509_dname: %s\n",
291 qdict_haskey(client, "x509_dname") ?
292 qdict_get_str(client, "x509_dname") : "none");
293 #endif
294 #ifdef CONFIG_VNC_SASL
295 monitor_printf(mon, " username: %s\n",
296 qdict_haskey(client, "sasl_username") ?
297 qdict_get_str(client, "sasl_username") : "none");
298 #endif
299 }
300
301 void do_info_vnc_print(Monitor *mon, const QObject *data)
302 {
303 QDict *server;
304 QList *clients;
305
306 server = qobject_to_qdict(data);
307 if (qdict_get_bool(server, "enabled") == 0) {
308 monitor_printf(mon, "Server: disabled\n");
309 return;
310 }
311
312 monitor_printf(mon, "Server:\n");
313 monitor_printf(mon, " address: %s:%s\n",
314 qdict_get_str(server, "host"),
315 qdict_get_str(server, "service"));
316 monitor_printf(mon, " auth: %s\n", qdict_get_str(server, "auth"));
317
318 clients = qdict_get_qlist(server, "clients");
319 if (qlist_empty(clients)) {
320 monitor_printf(mon, "Client: none\n");
321 } else {
322 qlist_iter(clients, info_vnc_iter, mon);
323 }
324 }
325
326 /**
327 * do_info_vnc(): Show VNC server information
328 *
329 * Return a QDict with server information. Connected clients are returned
330 * as a QList of QDicts.
331 *
332 * The main QDict contains the following:
333 *
334 * - "enabled": true or false
335 * - "host": server's IP address
336 * - "family": address family ("ipv4" or "ipv6")
337 * - "service": server's port number
338 * - "auth": authentication method
339 * - "clients": a QList of all connected clients
340 *
341 * Clients are described by a QDict, with the following information:
342 *
343 * - "host": client's IP address
344 * - "family": address family ("ipv4" or "ipv6")
345 * - "service": client's port number
346 * - "x509_dname": TLS dname (optional)
347 * - "sasl_username": SASL username (optional)
348 *
349 * Example:
350 *
351 * { "enabled": true, "host": "0.0.0.0", "service": "50402", "auth": "vnc",
352 * "family": "ipv4",
353 * "clients": [{ "host": "127.0.0.1", "service": "50401", "family": "ipv4" }]}
354 */
355 void do_info_vnc(Monitor *mon, QObject **ret_data)
356 {
357 if (vnc_display == NULL || vnc_display->display == NULL) {
358 *ret_data = qobject_from_jsonf("{ 'enabled': false }");
359 } else {
360 QList *clist;
361 VncState *client;
362
363 clist = qlist_new();
364 QTAILQ_FOREACH(client, &vnc_display->clients, next) {
365 if (client->info) {
366 /* incref so that it's not freed by upper layers */
367 qobject_incref(client->info);
368 qlist_append_obj(clist, client->info);
369 }
370 }
371
372 *ret_data = qobject_from_jsonf("{ 'enabled': true, 'clients': %p }",
373 QOBJECT(clist));
374 assert(*ret_data != NULL);
375
376 if (vnc_server_info_put(qobject_to_qdict(*ret_data)) < 0) {
377 qobject_decref(*ret_data);
378 *ret_data = NULL;
379 }
380 }
381 }
382
383 static inline uint32_t vnc_has_feature(VncState *vs, int feature) {
384 return (vs->features & (1 << feature));
385 }
386
387 /* TODO
388 1) Get the queue working for IO.
389 2) there is some weirdness when using the -S option (the screen is grey
390 and not totally invalidated
391 3) resolutions > 1024
392 */
393
394 static int vnc_update_client(VncState *vs, int has_dirty);
395 static void vnc_disconnect_start(VncState *vs);
396 static void vnc_disconnect_finish(VncState *vs);
397 static void vnc_init_timer(VncDisplay *vd);
398 static void vnc_remove_timer(VncDisplay *vd);
399
400 static void vnc_colordepth(VncState *vs);
401 static void framebuffer_update_request(VncState *vs, int incremental,
402 int x_position, int y_position,
403 int w, int h);
404 static void vnc_refresh(void *opaque);
405 static int vnc_refresh_server_surface(VncDisplay *vd);
406
407 static inline void vnc_set_bit(uint32_t *d, int k)
408 {
409 d[k >> 5] |= 1 << (k & 0x1f);
410 }
411
412 static inline void vnc_clear_bit(uint32_t *d, int k)
413 {
414 d[k >> 5] &= ~(1 << (k & 0x1f));
415 }
416
417 static inline void vnc_set_bits(uint32_t *d, int n, int nb_words)
418 {
419 int j;
420
421 j = 0;
422 while (n >= 32) {
423 d[j++] = -1;
424 n -= 32;
425 }
426 if (n > 0)
427 d[j++] = (1 << n) - 1;
428 while (j < nb_words)
429 d[j++] = 0;
430 }
431
432 static inline int vnc_get_bit(const uint32_t *d, int k)
433 {
434 return (d[k >> 5] >> (k & 0x1f)) & 1;
435 }
436
437 static inline int vnc_and_bits(const uint32_t *d1, const uint32_t *d2,
438 int nb_words)
439 {
440 int i;
441 for(i = 0; i < nb_words; i++) {
442 if ((d1[i] & d2[i]) != 0)
443 return 1;
444 }
445 return 0;
446 }
447
448 static void vnc_dpy_update(DisplayState *ds, int x, int y, int w, int h)
449 {
450 int i;
451 VncDisplay *vd = ds->opaque;
452 struct VncSurface *s = &vd->guest;
453
454 h += y;
455
456 /* round x down to ensure the loop only spans one 16-pixel block per,
457 iteration. otherwise, if (x % 16) != 0, the last iteration may span
458 two 16-pixel blocks but we only mark the first as dirty
459 */
460 w += (x % 16);
461 x -= (x % 16);
462
463 x = MIN(x, s->ds->width);
464 y = MIN(y, s->ds->height);
465 w = MIN(x + w, s->ds->width) - x;
466 h = MIN(h, s->ds->height);
467
468 for (; y < h; y++)
469 for (i = 0; i < w; i += 16)
470 vnc_set_bit(s->dirty[y], (x + i) / 16);
471 }
472
473 void vnc_framebuffer_update(VncState *vs, int x, int y, int w, int h,
474 int32_t encoding)
475 {
476 vnc_write_u16(vs, x);
477 vnc_write_u16(vs, y);
478 vnc_write_u16(vs, w);
479 vnc_write_u16(vs, h);
480
481 vnc_write_s32(vs, encoding);
482 }
483
484 void buffer_reserve(Buffer *buffer, size_t len)
485 {
486 if ((buffer->capacity - buffer->offset) < len) {
487 buffer->capacity += (len + 1024);
488 buffer->buffer = qemu_realloc(buffer->buffer, buffer->capacity);
489 if (buffer->buffer == NULL) {
490 fprintf(stderr, "vnc: out of memory\n");
491 exit(1);
492 }
493 }
494 }
495
496 int buffer_empty(Buffer *buffer)
497 {
498 return buffer->offset == 0;
499 }
500
501 uint8_t *buffer_end(Buffer *buffer)
502 {
503 return buffer->buffer + buffer->offset;
504 }
505
506 void buffer_reset(Buffer *buffer)
507 {
508 buffer->offset = 0;
509 }
510
511 void buffer_append(Buffer *buffer, const void *data, size_t len)
512 {
513 memcpy(buffer->buffer + buffer->offset, data, len);
514 buffer->offset += len;
515 }
516
517 static void vnc_dpy_resize(DisplayState *ds)
518 {
519 int size_changed;
520 VncDisplay *vd = ds->opaque;
521 VncState *vs;
522
523 /* server surface */
524 if (!vd->server)
525 vd->server = qemu_mallocz(sizeof(*vd->server));
526 if (vd->server->data)
527 qemu_free(vd->server->data);
528 *(vd->server) = *(ds->surface);
529 vd->server->data = qemu_mallocz(vd->server->linesize *
530 vd->server->height);
531
532 /* guest surface */
533 if (!vd->guest.ds)
534 vd->guest.ds = qemu_mallocz(sizeof(*vd->guest.ds));
535 if (ds_get_bytes_per_pixel(ds) != vd->guest.ds->pf.bytes_per_pixel)
536 console_color_init(ds);
537 size_changed = ds_get_width(ds) != vd->guest.ds->width ||
538 ds_get_height(ds) != vd->guest.ds->height;
539 *(vd->guest.ds) = *(ds->surface);
540 memset(vd->guest.dirty, 0xFF, sizeof(vd->guest.dirty));
541
542 QTAILQ_FOREACH(vs, &vd->clients, next) {
543 vnc_colordepth(vs);
544 if (size_changed) {
545 if (vs->csock != -1 && vnc_has_feature(vs, VNC_FEATURE_RESIZE)) {
546 vnc_write_u8(vs, VNC_MSG_SERVER_FRAMEBUFFER_UPDATE);
547 vnc_write_u8(vs, 0);
548 vnc_write_u16(vs, 1); /* number of rects */
549 vnc_framebuffer_update(vs, 0, 0, ds_get_width(ds), ds_get_height(ds),
550 VNC_ENCODING_DESKTOPRESIZE);
551 vnc_flush(vs);
552 }
553 }
554 if (vs->vd->cursor) {
555 vnc_cursor_define(vs);
556 }
557 memset(vs->dirty, 0xFF, sizeof(vs->dirty));
558 }
559 }
560
561 /* fastest code */
562 static void vnc_write_pixels_copy(VncState *vs, struct PixelFormat *pf,
563 void *pixels, int size)
564 {
565 vnc_write(vs, pixels, size);
566 }
567
568 /* slowest but generic code. */
569 void vnc_convert_pixel(VncState *vs, uint8_t *buf, uint32_t v)
570 {
571 uint8_t r, g, b;
572 VncDisplay *vd = vs->vd;
573
574 r = ((((v & vd->server->pf.rmask) >> vd->server->pf.rshift) << vs->clientds.pf.rbits) >>
575 vd->server->pf.rbits);
576 g = ((((v & vd->server->pf.gmask) >> vd->server->pf.gshift) << vs->clientds.pf.gbits) >>
577 vd->server->pf.gbits);
578 b = ((((v & vd->server->pf.bmask) >> vd->server->pf.bshift) << vs->clientds.pf.bbits) >>
579 vd->server->pf.bbits);
580 v = (r << vs->clientds.pf.rshift) |
581 (g << vs->clientds.pf.gshift) |
582 (b << vs->clientds.pf.bshift);
583 switch(vs->clientds.pf.bytes_per_pixel) {
584 case 1:
585 buf[0] = v;
586 break;
587 case 2:
588 if (vs->clientds.flags & QEMU_BIG_ENDIAN_FLAG) {
589 buf[0] = v >> 8;
590 buf[1] = v;
591 } else {
592 buf[1] = v >> 8;
593 buf[0] = v;
594 }
595 break;
596 default:
597 case 4:
598 if (vs->clientds.flags & QEMU_BIG_ENDIAN_FLAG) {
599 buf[0] = v >> 24;
600 buf[1] = v >> 16;
601 buf[2] = v >> 8;
602 buf[3] = v;
603 } else {
604 buf[3] = v >> 24;
605 buf[2] = v >> 16;
606 buf[1] = v >> 8;
607 buf[0] = v;
608 }
609 break;
610 }
611 }
612
613 static void vnc_write_pixels_generic(VncState *vs, struct PixelFormat *pf,
614 void *pixels1, int size)
615 {
616 uint8_t buf[4];
617
618 if (pf->bytes_per_pixel == 4) {
619 uint32_t *pixels = pixels1;
620 int n, i;
621 n = size >> 2;
622 for(i = 0; i < n; i++) {
623 vnc_convert_pixel(vs, buf, pixels[i]);
624 vnc_write(vs, buf, vs->clientds.pf.bytes_per_pixel);
625 }
626 } else if (pf->bytes_per_pixel == 2) {
627 uint16_t *pixels = pixels1;
628 int n, i;
629 n = size >> 1;
630 for(i = 0; i < n; i++) {
631 vnc_convert_pixel(vs, buf, pixels[i]);
632 vnc_write(vs, buf, vs->clientds.pf.bytes_per_pixel);
633 }
634 } else if (pf->bytes_per_pixel == 1) {
635 uint8_t *pixels = pixels1;
636 int n, i;
637 n = size;
638 for(i = 0; i < n; i++) {
639 vnc_convert_pixel(vs, buf, pixels[i]);
640 vnc_write(vs, buf, vs->clientds.pf.bytes_per_pixel);
641 }
642 } else {
643 fprintf(stderr, "vnc_write_pixels_generic: VncState color depth not supported\n");
644 }
645 }
646
647 void vnc_raw_send_framebuffer_update(VncState *vs, int x, int y, int w, int h)
648 {
649 int i;
650 uint8_t *row;
651 VncDisplay *vd = vs->vd;
652
653 row = vd->server->data + y * ds_get_linesize(vs->ds) + x * ds_get_bytes_per_pixel(vs->ds);
654 for (i = 0; i < h; i++) {
655 vs->write_pixels(vs, &vd->server->pf, row, w * ds_get_bytes_per_pixel(vs->ds));
656 row += ds_get_linesize(vs->ds);
657 }
658 }
659
660 static void send_framebuffer_update(VncState *vs, int x, int y, int w, int h)
661 {
662 switch(vs->vnc_encoding) {
663 case VNC_ENCODING_ZLIB:
664 vnc_hextile_send_framebuffer_update(vs, x, y, w, h);
665 break;
666 case VNC_ENCODING_HEXTILE:
667 vnc_framebuffer_update(vs, x, y, w, h, VNC_ENCODING_HEXTILE);
668 vnc_hextile_send_framebuffer_update(vs, x, y, w, h);
669 break;
670 default:
671 vnc_framebuffer_update(vs, x, y, w, h, VNC_ENCODING_RAW);
672 vnc_raw_send_framebuffer_update(vs, x, y, w, h);
673 break;
674 }
675 }
676
677 static void vnc_copy(VncState *vs, int src_x, int src_y, int dst_x, int dst_y, int w, int h)
678 {
679 /* send bitblit op to the vnc client */
680 vnc_write_u8(vs, VNC_MSG_SERVER_FRAMEBUFFER_UPDATE);
681 vnc_write_u8(vs, 0);
682 vnc_write_u16(vs, 1); /* number of rects */
683 vnc_framebuffer_update(vs, dst_x, dst_y, w, h, VNC_ENCODING_COPYRECT);
684 vnc_write_u16(vs, src_x);
685 vnc_write_u16(vs, src_y);
686 vnc_flush(vs);
687 }
688
689 static void vnc_dpy_copy(DisplayState *ds, int src_x, int src_y, int dst_x, int dst_y, int w, int h)
690 {
691 VncDisplay *vd = ds->opaque;
692 VncState *vs, *vn;
693 uint8_t *src_row;
694 uint8_t *dst_row;
695 int i,x,y,pitch,depth,inc,w_lim,s;
696 int cmp_bytes;
697
698 vnc_refresh_server_surface(vd);
699 QTAILQ_FOREACH_SAFE(vs, &vd->clients, next, vn) {
700 if (vnc_has_feature(vs, VNC_FEATURE_COPYRECT)) {
701 vs->force_update = 1;
702 vnc_update_client(vs, 1);
703 /* vs might be free()ed here */
704 }
705 }
706
707 /* do bitblit op on the local surface too */
708 pitch = ds_get_linesize(vd->ds);
709 depth = ds_get_bytes_per_pixel(vd->ds);
710 src_row = vd->server->data + pitch * src_y + depth * src_x;
711 dst_row = vd->server->data + pitch * dst_y + depth * dst_x;
712 y = dst_y;
713 inc = 1;
714 if (dst_y > src_y) {
715 /* copy backwards */
716 src_row += pitch * (h-1);
717 dst_row += pitch * (h-1);
718 pitch = -pitch;
719 y = dst_y + h - 1;
720 inc = -1;
721 }
722 w_lim = w - (16 - (dst_x % 16));
723 if (w_lim < 0)
724 w_lim = w;
725 else
726 w_lim = w - (w_lim % 16);
727 for (i = 0; i < h; i++) {
728 for (x = 0; x <= w_lim;
729 x += s, src_row += cmp_bytes, dst_row += cmp_bytes) {
730 if (x == w_lim) {
731 if ((s = w - w_lim) == 0)
732 break;
733 } else if (!x) {
734 s = (16 - (dst_x % 16));
735 s = MIN(s, w_lim);
736 } else {
737 s = 16;
738 }
739 cmp_bytes = s * depth;
740 if (memcmp(src_row, dst_row, cmp_bytes) == 0)
741 continue;
742 memmove(dst_row, src_row, cmp_bytes);
743 QTAILQ_FOREACH(vs, &vd->clients, next) {
744 if (!vnc_has_feature(vs, VNC_FEATURE_COPYRECT)) {
745 vnc_set_bit(vs->dirty[y], ((x + dst_x) / 16));
746 }
747 }
748 }
749 src_row += pitch - w * depth;
750 dst_row += pitch - w * depth;
751 y += inc;
752 }
753
754 QTAILQ_FOREACH(vs, &vd->clients, next) {
755 if (vnc_has_feature(vs, VNC_FEATURE_COPYRECT)) {
756 vnc_copy(vs, src_x, src_y, dst_x, dst_y, w, h);
757 }
758 }
759 }
760
761 static void vnc_mouse_set(int x, int y, int visible)
762 {
763 /* can we ask the client(s) to move the pointer ??? */
764 }
765
766 static int vnc_cursor_define(VncState *vs)
767 {
768 QEMUCursor *c = vs->vd->cursor;
769 PixelFormat pf = qemu_default_pixelformat(32);
770 int isize;
771
772 if (vnc_has_feature(vs, VNC_FEATURE_RICH_CURSOR)) {
773 vnc_write_u8(vs, VNC_MSG_SERVER_FRAMEBUFFER_UPDATE);
774 vnc_write_u8(vs, 0); /* padding */
775 vnc_write_u16(vs, 1); /* # of rects */
776 vnc_framebuffer_update(vs, c->hot_x, c->hot_y, c->width, c->height,
777 VNC_ENCODING_RICH_CURSOR);
778 isize = c->width * c->height * vs->clientds.pf.bytes_per_pixel;
779 vnc_write_pixels_generic(vs, &pf, c->data, isize);
780 vnc_write(vs, vs->vd->cursor_mask, vs->vd->cursor_msize);
781 return 0;
782 }
783 return -1;
784 }
785
786 static void vnc_dpy_cursor_define(QEMUCursor *c)
787 {
788 VncDisplay *vd = vnc_display;
789 VncState *vs;
790
791 cursor_put(vd->cursor);
792 qemu_free(vd->cursor_mask);
793
794 vd->cursor = c;
795 cursor_get(vd->cursor);
796 vd->cursor_msize = cursor_get_mono_bpl(c) * c->height;
797 vd->cursor_mask = qemu_mallocz(vd->cursor_msize);
798 cursor_get_mono_mask(c, 0, vd->cursor_mask);
799
800 QTAILQ_FOREACH(vs, &vd->clients, next) {
801 vnc_cursor_define(vs);
802 }
803 }
804
805 static int find_and_clear_dirty_height(struct VncState *vs,
806 int y, int last_x, int x)
807 {
808 int h;
809 VncDisplay *vd = vs->vd;
810
811 for (h = 1; h < (vd->server->height - y); h++) {
812 int tmp_x;
813 if (!vnc_get_bit(vs->dirty[y + h], last_x))
814 break;
815 for (tmp_x = last_x; tmp_x < x; tmp_x++)
816 vnc_clear_bit(vs->dirty[y + h], tmp_x);
817 }
818
819 return h;
820 }
821
822 static int vnc_update_client(VncState *vs, int has_dirty)
823 {
824 if (vs->need_update && vs->csock != -1) {
825 VncDisplay *vd = vs->vd;
826 int y;
827 int n_rectangles;
828 int saved_offset;
829
830 if (vs->output.offset && !vs->audio_cap && !vs->force_update)
831 /* kernel send buffers are full -> drop frames to throttle */
832 return 0;
833
834 if (!has_dirty && !vs->audio_cap && !vs->force_update)
835 return 0;
836
837 /*
838 * Send screen updates to the vnc client using the server
839 * surface and server dirty map. guest surface updates
840 * happening in parallel don't disturb us, the next pass will
841 * send them to the client.
842 */
843 n_rectangles = 0;
844 vnc_write_u8(vs, VNC_MSG_SERVER_FRAMEBUFFER_UPDATE);
845 vnc_write_u8(vs, 0);
846 saved_offset = vs->output.offset;
847 vnc_write_u16(vs, 0);
848
849 for (y = 0; y < vd->server->height; y++) {
850 int x;
851 int last_x = -1;
852 for (x = 0; x < vd->server->width / 16; x++) {
853 if (vnc_get_bit(vs->dirty[y], x)) {
854 if (last_x == -1) {
855 last_x = x;
856 }
857 vnc_clear_bit(vs->dirty[y], x);
858 } else {
859 if (last_x != -1) {
860 int h = find_and_clear_dirty_height(vs, y, last_x, x);
861 send_framebuffer_update(vs, last_x * 16, y, (x - last_x) * 16, h);
862 n_rectangles++;
863 }
864 last_x = -1;
865 }
866 }
867 if (last_x != -1) {
868 int h = find_and_clear_dirty_height(vs, y, last_x, x);
869 send_framebuffer_update(vs, last_x * 16, y, (x - last_x) * 16, h);
870 n_rectangles++;
871 }
872 }
873 vs->output.buffer[saved_offset] = (n_rectangles >> 8) & 0xFF;
874 vs->output.buffer[saved_offset + 1] = n_rectangles & 0xFF;
875 vnc_flush(vs);
876 vs->force_update = 0;
877 return n_rectangles;
878 }
879
880 if (vs->csock == -1)
881 vnc_disconnect_finish(vs);
882
883 return 0;
884 }
885
886 /* audio */
887 static void audio_capture_notify(void *opaque, audcnotification_e cmd)
888 {
889 VncState *vs = opaque;
890
891 switch (cmd) {
892 case AUD_CNOTIFY_DISABLE:
893 vnc_write_u8(vs, VNC_MSG_SERVER_QEMU);
894 vnc_write_u8(vs, VNC_MSG_SERVER_QEMU_AUDIO);
895 vnc_write_u16(vs, VNC_MSG_SERVER_QEMU_AUDIO_END);
896 vnc_flush(vs);
897 break;
898
899 case AUD_CNOTIFY_ENABLE:
900 vnc_write_u8(vs, VNC_MSG_SERVER_QEMU);
901 vnc_write_u8(vs, VNC_MSG_SERVER_QEMU_AUDIO);
902 vnc_write_u16(vs, VNC_MSG_SERVER_QEMU_AUDIO_BEGIN);
903 vnc_flush(vs);
904 break;
905 }
906 }
907
908 static void audio_capture_destroy(void *opaque)
909 {
910 }
911
912 static void audio_capture(void *opaque, void *buf, int size)
913 {
914 VncState *vs = opaque;
915
916 vnc_write_u8(vs, VNC_MSG_SERVER_QEMU);
917 vnc_write_u8(vs, VNC_MSG_SERVER_QEMU_AUDIO);
918 vnc_write_u16(vs, VNC_MSG_SERVER_QEMU_AUDIO_DATA);
919 vnc_write_u32(vs, size);
920 vnc_write(vs, buf, size);
921 vnc_flush(vs);
922 }
923
924 static void audio_add(VncState *vs)
925 {
926 struct audio_capture_ops ops;
927
928 if (vs->audio_cap) {
929 monitor_printf(default_mon, "audio already running\n");
930 return;
931 }
932
933 ops.notify = audio_capture_notify;
934 ops.destroy = audio_capture_destroy;
935 ops.capture = audio_capture;
936
937 vs->audio_cap = AUD_add_capture(&vs->as, &ops, vs);
938 if (!vs->audio_cap) {
939 monitor_printf(default_mon, "Failed to add audio capture\n");
940 }
941 }
942
943 static void audio_del(VncState *vs)
944 {
945 if (vs->audio_cap) {
946 AUD_del_capture(vs->audio_cap, vs);
947 vs->audio_cap = NULL;
948 }
949 }
950
951 static void vnc_disconnect_start(VncState *vs)
952 {
953 if (vs->csock == -1)
954 return;
955 qemu_set_fd_handler2(vs->csock, NULL, NULL, NULL, NULL);
956 closesocket(vs->csock);
957 vs->csock = -1;
958 }
959
960 static void vnc_disconnect_finish(VncState *vs)
961 {
962 vnc_qmp_event(vs, QEVENT_VNC_DISCONNECTED);
963
964 if (vs->input.buffer) {
965 qemu_free(vs->input.buffer);
966 vs->input.buffer = NULL;
967 }
968 if (vs->output.buffer) {
969 qemu_free(vs->output.buffer);
970 vs->output.buffer = NULL;
971 }
972
973 qobject_decref(vs->info);
974
975 #ifdef CONFIG_VNC_TLS
976 vnc_tls_client_cleanup(vs);
977 #endif /* CONFIG_VNC_TLS */
978 #ifdef CONFIG_VNC_SASL
979 vnc_sasl_client_cleanup(vs);
980 #endif /* CONFIG_VNC_SASL */
981 audio_del(vs);
982
983 QTAILQ_REMOVE(&vs->vd->clients, vs, next);
984
985 if (QTAILQ_EMPTY(&vs->vd->clients)) {
986 dcl->idle = 1;
987 }
988
989 qemu_remove_mouse_mode_change_notifier(&vs->mouse_mode_notifier);
990 vnc_remove_timer(vs->vd);
991 if (vs->vd->lock_key_sync)
992 qemu_remove_led_event_handler(vs->led);
993 qemu_free(vs);
994 }
995
996 int vnc_client_io_error(VncState *vs, int ret, int last_errno)
997 {
998 if (ret == 0 || ret == -1) {
999 if (ret == -1) {
1000 switch (last_errno) {
1001 case EINTR:
1002 case EAGAIN:
1003 #ifdef _WIN32
1004 case WSAEWOULDBLOCK:
1005 #endif
1006 return 0;
1007 default:
1008 break;
1009 }
1010 }
1011
1012 VNC_DEBUG("Closing down client sock: ret %d, errno %d\n",
1013 ret, ret < 0 ? last_errno : 0);
1014 vnc_disconnect_start(vs);
1015
1016 return 0;
1017 }
1018 return ret;
1019 }
1020
1021
1022 void vnc_client_error(VncState *vs)
1023 {
1024 VNC_DEBUG("Closing down client sock: protocol error\n");
1025 vnc_disconnect_start(vs);
1026 }
1027
1028
1029 /*
1030 * Called to write a chunk of data to the client socket. The data may
1031 * be the raw data, or may have already been encoded by SASL.
1032 * The data will be written either straight onto the socket, or
1033 * written via the GNUTLS wrappers, if TLS/SSL encryption is enabled
1034 *
1035 * NB, it is theoretically possible to have 2 layers of encryption,
1036 * both SASL, and this TLS layer. It is highly unlikely in practice
1037 * though, since SASL encryption will typically be a no-op if TLS
1038 * is active
1039 *
1040 * Returns the number of bytes written, which may be less than
1041 * the requested 'datalen' if the socket would block. Returns
1042 * -1 on error, and disconnects the client socket.
1043 */
1044 long vnc_client_write_buf(VncState *vs, const uint8_t *data, size_t datalen)
1045 {
1046 long ret;
1047 #ifdef CONFIG_VNC_TLS
1048 if (vs->tls.session) {
1049 ret = gnutls_write(vs->tls.session, data, datalen);
1050 if (ret < 0) {
1051 if (ret == GNUTLS_E_AGAIN)
1052 errno = EAGAIN;
1053 else
1054 errno = EIO;
1055 ret = -1;
1056 }
1057 } else
1058 #endif /* CONFIG_VNC_TLS */
1059 ret = send(vs->csock, (const void *)data, datalen, 0);
1060 VNC_DEBUG("Wrote wire %p %zd -> %ld\n", data, datalen, ret);
1061 return vnc_client_io_error(vs, ret, socket_error());
1062 }
1063
1064
1065 /*
1066 * Called to write buffered data to the client socket, when not
1067 * using any SASL SSF encryption layers. Will write as much data
1068 * as possible without blocking. If all buffered data is written,
1069 * will switch the FD poll() handler back to read monitoring.
1070 *
1071 * Returns the number of bytes written, which may be less than
1072 * the buffered output data if the socket would block. Returns
1073 * -1 on error, and disconnects the client socket.
1074 */
1075 static long vnc_client_write_plain(VncState *vs)
1076 {
1077 long ret;
1078
1079 #ifdef CONFIG_VNC_SASL
1080 VNC_DEBUG("Write Plain: Pending output %p size %zd offset %zd. Wait SSF %d\n",
1081 vs->output.buffer, vs->output.capacity, vs->output.offset,
1082 vs->sasl.waitWriteSSF);
1083
1084 if (vs->sasl.conn &&
1085 vs->sasl.runSSF &&
1086 vs->sasl.waitWriteSSF) {
1087 ret = vnc_client_write_buf(vs, vs->output.buffer, vs->sasl.waitWriteSSF);
1088 if (ret)
1089 vs->sasl.waitWriteSSF -= ret;
1090 } else
1091 #endif /* CONFIG_VNC_SASL */
1092 ret = vnc_client_write_buf(vs, vs->output.buffer, vs->output.offset);
1093 if (!ret)
1094 return 0;
1095
1096 memmove(vs->output.buffer, vs->output.buffer + ret, (vs->output.offset - ret));
1097 vs->output.offset -= ret;
1098
1099 if (vs->output.offset == 0) {
1100 qemu_set_fd_handler2(vs->csock, NULL, vnc_client_read, NULL, vs);
1101 }
1102
1103 return ret;
1104 }
1105
1106
1107 /*
1108 * First function called whenever there is data to be written to
1109 * the client socket. Will delegate actual work according to whether
1110 * SASL SSF layers are enabled (thus requiring encryption calls)
1111 */
1112 void vnc_client_write(void *opaque)
1113 {
1114 VncState *vs = opaque;
1115
1116 #ifdef CONFIG_VNC_SASL
1117 if (vs->sasl.conn &&
1118 vs->sasl.runSSF &&
1119 !vs->sasl.waitWriteSSF) {
1120 vnc_client_write_sasl(vs);
1121 } else
1122 #endif /* CONFIG_VNC_SASL */
1123 vnc_client_write_plain(vs);
1124 }
1125
1126 void vnc_read_when(VncState *vs, VncReadEvent *func, size_t expecting)
1127 {
1128 vs->read_handler = func;
1129 vs->read_handler_expect = expecting;
1130 }
1131
1132
1133 /*
1134 * Called to read a chunk of data from the client socket. The data may
1135 * be the raw data, or may need to be further decoded by SASL.
1136 * The data will be read either straight from to the socket, or
1137 * read via the GNUTLS wrappers, if TLS/SSL encryption is enabled
1138 *
1139 * NB, it is theoretically possible to have 2 layers of encryption,
1140 * both SASL, and this TLS layer. It is highly unlikely in practice
1141 * though, since SASL encryption will typically be a no-op if TLS
1142 * is active
1143 *
1144 * Returns the number of bytes read, which may be less than
1145 * the requested 'datalen' if the socket would block. Returns
1146 * -1 on error, and disconnects the client socket.
1147 */
1148 long vnc_client_read_buf(VncState *vs, uint8_t *data, size_t datalen)
1149 {
1150 long ret;
1151 #ifdef CONFIG_VNC_TLS
1152 if (vs->tls.session) {
1153 ret = gnutls_read(vs->tls.session, data, datalen);
1154 if (ret < 0) {
1155 if (ret == GNUTLS_E_AGAIN)
1156 errno = EAGAIN;
1157 else
1158 errno = EIO;
1159 ret = -1;
1160 }
1161 } else
1162 #endif /* CONFIG_VNC_TLS */
1163 ret = recv(vs->csock, (void *)data, datalen, 0);
1164 VNC_DEBUG("Read wire %p %zd -> %ld\n", data, datalen, ret);
1165 return vnc_client_io_error(vs, ret, socket_error());
1166 }
1167
1168
1169 /*
1170 * Called to read data from the client socket to the input buffer,
1171 * when not using any SASL SSF encryption layers. Will read as much
1172 * data as possible without blocking.
1173 *
1174 * Returns the number of bytes read. Returns -1 on error, and
1175 * disconnects the client socket.
1176 */
1177 static long vnc_client_read_plain(VncState *vs)
1178 {
1179 int ret;
1180 VNC_DEBUG("Read plain %p size %zd offset %zd\n",
1181 vs->input.buffer, vs->input.capacity, vs->input.offset);
1182 buffer_reserve(&vs->input, 4096);
1183 ret = vnc_client_read_buf(vs, buffer_end(&vs->input), 4096);
1184 if (!ret)
1185 return 0;
1186 vs->input.offset += ret;
1187 return ret;
1188 }
1189
1190
1191 /*
1192 * First function called whenever there is more data to be read from
1193 * the client socket. Will delegate actual work according to whether
1194 * SASL SSF layers are enabled (thus requiring decryption calls)
1195 */
1196 void vnc_client_read(void *opaque)
1197 {
1198 VncState *vs = opaque;
1199 long ret;
1200
1201 #ifdef CONFIG_VNC_SASL
1202 if (vs->sasl.conn && vs->sasl.runSSF)
1203 ret = vnc_client_read_sasl(vs);
1204 else
1205 #endif /* CONFIG_VNC_SASL */
1206 ret = vnc_client_read_plain(vs);
1207 if (!ret) {
1208 if (vs->csock == -1)
1209 vnc_disconnect_finish(vs);
1210 return;
1211 }
1212
1213 while (vs->read_handler && vs->input.offset >= vs->read_handler_expect) {
1214 size_t len = vs->read_handler_expect;
1215 int ret;
1216
1217 ret = vs->read_handler(vs, vs->input.buffer, len);
1218 if (vs->csock == -1) {
1219 vnc_disconnect_finish(vs);
1220 return;
1221 }
1222
1223 if (!ret) {
1224 memmove(vs->input.buffer, vs->input.buffer + len, (vs->input.offset - len));
1225 vs->input.offset -= len;
1226 } else {
1227 vs->read_handler_expect = ret;
1228 }
1229 }
1230 }
1231
1232 void vnc_write(VncState *vs, const void *data, size_t len)
1233 {
1234 buffer_reserve(&vs->output, len);
1235
1236 if (vs->csock != -1 && buffer_empty(&vs->output)) {
1237 qemu_set_fd_handler2(vs->csock, NULL, vnc_client_read, vnc_client_write, vs);
1238 }
1239
1240 buffer_append(&vs->output, data, len);
1241 }
1242
1243 void vnc_write_s32(VncState *vs, int32_t value)
1244 {
1245 vnc_write_u32(vs, *(uint32_t *)&value);
1246 }
1247
1248 void vnc_write_u32(VncState *vs, uint32_t value)
1249 {
1250 uint8_t buf[4];
1251
1252 buf[0] = (value >> 24) & 0xFF;
1253 buf[1] = (value >> 16) & 0xFF;
1254 buf[2] = (value >> 8) & 0xFF;
1255 buf[3] = value & 0xFF;
1256
1257 vnc_write(vs, buf, 4);
1258 }
1259
1260 void vnc_write_u16(VncState *vs, uint16_t value)
1261 {
1262 uint8_t buf[2];
1263
1264 buf[0] = (value >> 8) & 0xFF;
1265 buf[1] = value & 0xFF;
1266
1267 vnc_write(vs, buf, 2);
1268 }
1269
1270 void vnc_write_u8(VncState *vs, uint8_t value)
1271 {
1272 vnc_write(vs, (char *)&value, 1);
1273 }
1274
1275 void vnc_flush(VncState *vs)
1276 {
1277 if (vs->csock != -1 && vs->output.offset)
1278 vnc_client_write(vs);
1279 }
1280
1281 uint8_t read_u8(uint8_t *data, size_t offset)
1282 {
1283 return data[offset];
1284 }
1285
1286 uint16_t read_u16(uint8_t *data, size_t offset)
1287 {
1288 return ((data[offset] & 0xFF) << 8) | (data[offset + 1] & 0xFF);
1289 }
1290
1291 int32_t read_s32(uint8_t *data, size_t offset)
1292 {
1293 return (int32_t)((data[offset] << 24) | (data[offset + 1] << 16) |
1294 (data[offset + 2] << 8) | data[offset + 3]);
1295 }
1296
1297 uint32_t read_u32(uint8_t *data, size_t offset)
1298 {
1299 return ((data[offset] << 24) | (data[offset + 1] << 16) |
1300 (data[offset + 2] << 8) | data[offset + 3]);
1301 }
1302
1303 static void client_cut_text(VncState *vs, size_t len, uint8_t *text)
1304 {
1305 }
1306
1307 static void check_pointer_type_change(Notifier *notifier)
1308 {
1309 VncState *vs = container_of(notifier, VncState, mouse_mode_notifier);
1310 int absolute = kbd_mouse_is_absolute();
1311
1312 if (vnc_has_feature(vs, VNC_FEATURE_POINTER_TYPE_CHANGE) && vs->absolute != absolute) {
1313 vnc_write_u8(vs, VNC_MSG_SERVER_FRAMEBUFFER_UPDATE);
1314 vnc_write_u8(vs, 0);
1315 vnc_write_u16(vs, 1);
1316 vnc_framebuffer_update(vs, absolute, 0,
1317 ds_get_width(vs->ds), ds_get_height(vs->ds),
1318 VNC_ENCODING_POINTER_TYPE_CHANGE);
1319 vnc_flush(vs);
1320 }
1321 vs->absolute = absolute;
1322 }
1323
1324 static void pointer_event(VncState *vs, int button_mask, int x, int y)
1325 {
1326 int buttons = 0;
1327 int dz = 0;
1328
1329 if (button_mask & 0x01)
1330 buttons |= MOUSE_EVENT_LBUTTON;
1331 if (button_mask & 0x02)
1332 buttons |= MOUSE_EVENT_MBUTTON;
1333 if (button_mask & 0x04)
1334 buttons |= MOUSE_EVENT_RBUTTON;
1335 if (button_mask & 0x08)
1336 dz = -1;
1337 if (button_mask & 0x10)
1338 dz = 1;
1339
1340 if (vs->absolute) {
1341 kbd_mouse_event(ds_get_width(vs->ds) > 1 ?
1342 x * 0x7FFF / (ds_get_width(vs->ds) - 1) : 0x4000,
1343 ds_get_height(vs->ds) > 1 ?
1344 y * 0x7FFF / (ds_get_height(vs->ds) - 1) : 0x4000,
1345 dz, buttons);
1346 } else if (vnc_has_feature(vs, VNC_FEATURE_POINTER_TYPE_CHANGE)) {
1347 x -= 0x7FFF;
1348 y -= 0x7FFF;
1349
1350 kbd_mouse_event(x, y, dz, buttons);
1351 } else {
1352 if (vs->last_x != -1)
1353 kbd_mouse_event(x - vs->last_x,
1354 y - vs->last_y,
1355 dz, buttons);
1356 vs->last_x = x;
1357 vs->last_y = y;
1358 }
1359 }
1360
1361 static void reset_keys(VncState *vs)
1362 {
1363 int i;
1364 for(i = 0; i < 256; i++) {
1365 if (vs->modifiers_state[i]) {
1366 if (i & SCANCODE_GREY)
1367 kbd_put_keycode(SCANCODE_EMUL0);
1368 kbd_put_keycode(i | SCANCODE_UP);
1369 vs->modifiers_state[i] = 0;
1370 }
1371 }
1372 }
1373
1374 static void press_key(VncState *vs, int keysym)
1375 {
1376 int keycode = keysym2scancode(vs->vd->kbd_layout, keysym) & SCANCODE_KEYMASK;
1377 if (keycode & SCANCODE_GREY)
1378 kbd_put_keycode(SCANCODE_EMUL0);
1379 kbd_put_keycode(keycode & SCANCODE_KEYCODEMASK);
1380 if (keycode & SCANCODE_GREY)
1381 kbd_put_keycode(SCANCODE_EMUL0);
1382 kbd_put_keycode(keycode | SCANCODE_UP);
1383 }
1384
1385 static void kbd_leds(void *opaque, int ledstate)
1386 {
1387 VncState *vs = opaque;
1388 int caps, num;
1389
1390 caps = ledstate & QEMU_CAPS_LOCK_LED ? 1 : 0;
1391 num = ledstate & QEMU_NUM_LOCK_LED ? 1 : 0;
1392
1393 if (vs->modifiers_state[0x3a] != caps) {
1394 vs->modifiers_state[0x3a] = caps;
1395 }
1396 if (vs->modifiers_state[0x45] != num) {
1397 vs->modifiers_state[0x45] = num;
1398 }
1399 }
1400
1401 static void do_key_event(VncState *vs, int down, int keycode, int sym)
1402 {
1403 /* QEMU console switch */
1404 switch(keycode) {
1405 case 0x2a: /* Left Shift */
1406 case 0x36: /* Right Shift */
1407 case 0x1d: /* Left CTRL */
1408 case 0x9d: /* Right CTRL */
1409 case 0x38: /* Left ALT */
1410 case 0xb8: /* Right ALT */
1411 if (down)
1412 vs->modifiers_state[keycode] = 1;
1413 else
1414 vs->modifiers_state[keycode] = 0;
1415 break;
1416 case 0x02 ... 0x0a: /* '1' to '9' keys */
1417 if (down && vs->modifiers_state[0x1d] && vs->modifiers_state[0x38]) {
1418 /* Reset the modifiers sent to the current console */
1419 reset_keys(vs);
1420 console_select(keycode - 0x02);
1421 return;
1422 }
1423 break;
1424 case 0x3a: /* CapsLock */
1425 case 0x45: /* NumLock */
1426 if (down)
1427 vs->modifiers_state[keycode] ^= 1;
1428 break;
1429 }
1430
1431 if (vs->vd->lock_key_sync &&
1432 keycode_is_keypad(vs->vd->kbd_layout, keycode)) {
1433 /* If the numlock state needs to change then simulate an additional
1434 keypress before sending this one. This will happen if the user
1435 toggles numlock away from the VNC window.
1436 */
1437 if (keysym_is_numlock(vs->vd->kbd_layout, sym & 0xFFFF)) {
1438 if (!vs->modifiers_state[0x45]) {
1439 vs->modifiers_state[0x45] = 1;
1440 press_key(vs, 0xff7f);
1441 }
1442 } else {
1443 if (vs->modifiers_state[0x45]) {
1444 vs->modifiers_state[0x45] = 0;
1445 press_key(vs, 0xff7f);
1446 }
1447 }
1448 }
1449
1450 if (vs->vd->lock_key_sync &&
1451 ((sym >= 'A' && sym <= 'Z') || (sym >= 'a' && sym <= 'z'))) {
1452 /* If the capslock state needs to change then simulate an additional
1453 keypress before sending this one. This will happen if the user
1454 toggles capslock away from the VNC window.
1455 */
1456 int uppercase = !!(sym >= 'A' && sym <= 'Z');
1457 int shift = !!(vs->modifiers_state[0x2a] | vs->modifiers_state[0x36]);
1458 int capslock = !!(vs->modifiers_state[0x3a]);
1459 if (capslock) {
1460 if (uppercase == shift) {
1461 vs->modifiers_state[0x3a] = 0;
1462 press_key(vs, 0xffe5);
1463 }
1464 } else {
1465 if (uppercase != shift) {
1466 vs->modifiers_state[0x3a] = 1;
1467 press_key(vs, 0xffe5);
1468 }
1469 }
1470 }
1471
1472 if (is_graphic_console()) {
1473 if (keycode & SCANCODE_GREY)
1474 kbd_put_keycode(SCANCODE_EMUL0);
1475 if (down)
1476 kbd_put_keycode(keycode & SCANCODE_KEYCODEMASK);
1477 else
1478 kbd_put_keycode(keycode | SCANCODE_UP);
1479 } else {
1480 /* QEMU console emulation */
1481 if (down) {
1482 int numlock = vs->modifiers_state[0x45];
1483 switch (keycode) {
1484 case 0x2a: /* Left Shift */
1485 case 0x36: /* Right Shift */
1486 case 0x1d: /* Left CTRL */
1487 case 0x9d: /* Right CTRL */
1488 case 0x38: /* Left ALT */
1489 case 0xb8: /* Right ALT */
1490 break;
1491 case 0xc8:
1492 kbd_put_keysym(QEMU_KEY_UP);
1493 break;
1494 case 0xd0:
1495 kbd_put_keysym(QEMU_KEY_DOWN);
1496 break;
1497 case 0xcb:
1498 kbd_put_keysym(QEMU_KEY_LEFT);
1499 break;
1500 case 0xcd:
1501 kbd_put_keysym(QEMU_KEY_RIGHT);
1502 break;
1503 case 0xd3:
1504 kbd_put_keysym(QEMU_KEY_DELETE);
1505 break;
1506 case 0xc7:
1507 kbd_put_keysym(QEMU_KEY_HOME);
1508 break;
1509 case 0xcf:
1510 kbd_put_keysym(QEMU_KEY_END);
1511 break;
1512 case 0xc9:
1513 kbd_put_keysym(QEMU_KEY_PAGEUP);
1514 break;
1515 case 0xd1:
1516 kbd_put_keysym(QEMU_KEY_PAGEDOWN);
1517 break;
1518
1519 case 0x47:
1520 kbd_put_keysym(numlock ? '7' : QEMU_KEY_HOME);
1521 break;
1522 case 0x48:
1523 kbd_put_keysym(numlock ? '8' : QEMU_KEY_UP);
1524 break;
1525 case 0x49:
1526 kbd_put_keysym(numlock ? '9' : QEMU_KEY_PAGEUP);
1527 break;
1528 case 0x4b:
1529 kbd_put_keysym(numlock ? '4' : QEMU_KEY_LEFT);
1530 break;
1531 case 0x4c:
1532 kbd_put_keysym('5');
1533 break;
1534 case 0x4d:
1535 kbd_put_keysym(numlock ? '6' : QEMU_KEY_RIGHT);
1536 break;
1537 case 0x4f:
1538 kbd_put_keysym(numlock ? '1' : QEMU_KEY_END);
1539 break;
1540 case 0x50:
1541 kbd_put_keysym(numlock ? '2' : QEMU_KEY_DOWN);
1542 break;
1543 case 0x51:
1544 kbd_put_keysym(numlock ? '3' : QEMU_KEY_PAGEDOWN);
1545 break;
1546 case 0x52:
1547 kbd_put_keysym('0');
1548 break;
1549 case 0x53:
1550 kbd_put_keysym(numlock ? '.' : QEMU_KEY_DELETE);
1551 break;
1552
1553 case 0xb5:
1554 kbd_put_keysym('/');
1555 break;
1556 case 0x37:
1557 kbd_put_keysym('*');
1558 break;
1559 case 0x4a:
1560 kbd_put_keysym('-');
1561 break;
1562 case 0x4e:
1563 kbd_put_keysym('+');
1564 break;
1565 case 0x9c:
1566 kbd_put_keysym('\n');
1567 break;
1568
1569 default:
1570 kbd_put_keysym(sym);
1571 break;
1572 }
1573 }
1574 }
1575 }
1576
1577 static void key_event(VncState *vs, int down, uint32_t sym)
1578 {
1579 int keycode;
1580 int lsym = sym;
1581
1582 if (lsym >= 'A' && lsym <= 'Z' && is_graphic_console()) {
1583 lsym = lsym - 'A' + 'a';
1584 }
1585
1586 keycode = keysym2scancode(vs->vd->kbd_layout, lsym & 0xFFFF) & SCANCODE_KEYMASK;
1587 do_key_event(vs, down, keycode, sym);
1588 }
1589
1590 static void ext_key_event(VncState *vs, int down,
1591 uint32_t sym, uint16_t keycode)
1592 {
1593 /* if the user specifies a keyboard layout, always use it */
1594 if (keyboard_layout)
1595 key_event(vs, down, sym);
1596 else
1597 do_key_event(vs, down, keycode, sym);
1598 }
1599
1600 static void framebuffer_update_request(VncState *vs, int incremental,
1601 int x_position, int y_position,
1602 int w, int h)
1603 {
1604 if (y_position > ds_get_height(vs->ds))
1605 y_position = ds_get_height(vs->ds);
1606 if (y_position + h >= ds_get_height(vs->ds))
1607 h = ds_get_height(vs->ds) - y_position;
1608
1609 int i;
1610 vs->need_update = 1;
1611 if (!incremental) {
1612 vs->force_update = 1;
1613 for (i = 0; i < h; i++) {
1614 vnc_set_bits(vs->dirty[y_position + i],
1615 (ds_get_width(vs->ds) / 16), VNC_DIRTY_WORDS);
1616 }
1617 }
1618 }
1619
1620 static void send_ext_key_event_ack(VncState *vs)
1621 {
1622 vnc_write_u8(vs, VNC_MSG_SERVER_FRAMEBUFFER_UPDATE);
1623 vnc_write_u8(vs, 0);
1624 vnc_write_u16(vs, 1);
1625 vnc_framebuffer_update(vs, 0, 0, ds_get_width(vs->ds), ds_get_height(vs->ds),
1626 VNC_ENCODING_EXT_KEY_EVENT);
1627 vnc_flush(vs);
1628 }
1629
1630 static void send_ext_audio_ack(VncState *vs)
1631 {
1632 vnc_write_u8(vs, VNC_MSG_SERVER_FRAMEBUFFER_UPDATE);
1633 vnc_write_u8(vs, 0);
1634 vnc_write_u16(vs, 1);
1635 vnc_framebuffer_update(vs, 0, 0, ds_get_width(vs->ds), ds_get_height(vs->ds),
1636 VNC_ENCODING_AUDIO);
1637 vnc_flush(vs);
1638 }
1639
1640 static void set_encodings(VncState *vs, int32_t *encodings, size_t n_encodings)
1641 {
1642 int i;
1643 unsigned int enc = 0;
1644
1645 vnc_zlib_init(vs);
1646 vs->features = 0;
1647 vs->vnc_encoding = 0;
1648 vs->tight_compression = 9;
1649 vs->tight_quality = 9;
1650 vs->absolute = -1;
1651
1652 for (i = n_encodings - 1; i >= 0; i--) {
1653 enc = encodings[i];
1654 switch (enc) {
1655 case VNC_ENCODING_RAW:
1656 vs->vnc_encoding = enc;
1657 break;
1658 case VNC_ENCODING_COPYRECT:
1659 vs->features |= VNC_FEATURE_COPYRECT_MASK;
1660 break;
1661 case VNC_ENCODING_HEXTILE:
1662 vs->features |= VNC_FEATURE_HEXTILE_MASK;
1663 vs->vnc_encoding = enc;
1664 break;
1665 case VNC_ENCODING_ZLIB:
1666 vs->features |= VNC_FEATURE_ZLIB_MASK;
1667 vs->vnc_encoding = enc;
1668 break;
1669 case VNC_ENCODING_DESKTOPRESIZE:
1670 vs->features |= VNC_FEATURE_RESIZE_MASK;
1671 break;
1672 case VNC_ENCODING_POINTER_TYPE_CHANGE:
1673 vs->features |= VNC_FEATURE_POINTER_TYPE_CHANGE_MASK;
1674 break;
1675 case VNC_ENCODING_RICH_CURSOR:
1676 vs->features |= VNC_FEATURE_RICH_CURSOR_MASK;
1677 break;
1678 case VNC_ENCODING_EXT_KEY_EVENT:
1679 send_ext_key_event_ack(vs);
1680 break;
1681 case VNC_ENCODING_AUDIO:
1682 send_ext_audio_ack(vs);
1683 break;
1684 case VNC_ENCODING_WMVi:
1685 vs->features |= VNC_FEATURE_WMVI_MASK;
1686 break;
1687 case VNC_ENCODING_COMPRESSLEVEL0 ... VNC_ENCODING_COMPRESSLEVEL0 + 9:
1688 vs->tight_compression = (enc & 0x0F);
1689 break;
1690 case VNC_ENCODING_QUALITYLEVEL0 ... VNC_ENCODING_QUALITYLEVEL0 + 9:
1691 vs->tight_quality = (enc & 0x0F);
1692 break;
1693 default:
1694 VNC_DEBUG("Unknown encoding: %d (0x%.8x): %d\n", i, enc, enc);
1695 break;
1696 }
1697 }
1698 check_pointer_type_change(&vs->mouse_mode_notifier);
1699 }
1700
1701 static void set_pixel_conversion(VncState *vs)
1702 {
1703 if ((vs->clientds.flags & QEMU_BIG_ENDIAN_FLAG) ==
1704 (vs->ds->surface->flags & QEMU_BIG_ENDIAN_FLAG) &&
1705 !memcmp(&(vs->clientds.pf), &(vs->ds->surface->pf), sizeof(PixelFormat))) {
1706 vs->write_pixels = vnc_write_pixels_copy;
1707 vnc_hextile_set_pixel_conversion(vs, 0);
1708 } else {
1709 vs->write_pixels = vnc_write_pixels_generic;
1710 vnc_hextile_set_pixel_conversion(vs, 1);
1711 }
1712 }
1713
1714 static void set_pixel_format(VncState *vs,
1715 int bits_per_pixel, int depth,
1716 int big_endian_flag, int true_color_flag,
1717 int red_max, int green_max, int blue_max,
1718 int red_shift, int green_shift, int blue_shift)
1719 {
1720 if (!true_color_flag) {
1721 vnc_client_error(vs);
1722 return;
1723 }
1724
1725 vs->clientds = *(vs->vd->guest.ds);
1726 vs->clientds.pf.rmax = red_max;
1727 count_bits(vs->clientds.pf.rbits, red_max);
1728 vs->clientds.pf.rshift = red_shift;
1729 vs->clientds.pf.rmask = red_max << red_shift;
1730 vs->clientds.pf.gmax = green_max;
1731 count_bits(vs->clientds.pf.gbits, green_max);
1732 vs->clientds.pf.gshift = green_shift;
1733 vs->clientds.pf.gmask = green_max << green_shift;
1734 vs->clientds.pf.bmax = blue_max;
1735 count_bits(vs->clientds.pf.bbits, blue_max);
1736 vs->clientds.pf.bshift = blue_shift;
1737 vs->clientds.pf.bmask = blue_max << blue_shift;
1738 vs->clientds.pf.bits_per_pixel = bits_per_pixel;
1739 vs->clientds.pf.bytes_per_pixel = bits_per_pixel / 8;
1740 vs->clientds.pf.depth = bits_per_pixel == 32 ? 24 : bits_per_pixel;
1741 vs->clientds.flags = big_endian_flag ? QEMU_BIG_ENDIAN_FLAG : 0x00;
1742
1743 set_pixel_conversion(vs);
1744
1745 vga_hw_invalidate();
1746 vga_hw_update();
1747 }
1748
1749 static void pixel_format_message (VncState *vs) {
1750 char pad[3] = { 0, 0, 0 };
1751
1752 vnc_write_u8(vs, vs->ds->surface->pf.bits_per_pixel); /* bits-per-pixel */
1753 vnc_write_u8(vs, vs->ds->surface->pf.depth); /* depth */
1754
1755 #ifdef HOST_WORDS_BIGENDIAN
1756 vnc_write_u8(vs, 1); /* big-endian-flag */
1757 #else
1758 vnc_write_u8(vs, 0); /* big-endian-flag */
1759 #endif
1760 vnc_write_u8(vs, 1); /* true-color-flag */
1761 vnc_write_u16(vs, vs->ds->surface->pf.rmax); /* red-max */
1762 vnc_write_u16(vs, vs->ds->surface->pf.gmax); /* green-max */
1763 vnc_write_u16(vs, vs->ds->surface->pf.bmax); /* blue-max */
1764 vnc_write_u8(vs, vs->ds->surface->pf.rshift); /* red-shift */
1765 vnc_write_u8(vs, vs->ds->surface->pf.gshift); /* green-shift */
1766 vnc_write_u8(vs, vs->ds->surface->pf.bshift); /* blue-shift */
1767
1768 vnc_hextile_set_pixel_conversion(vs, 0);
1769
1770 vs->clientds = *(vs->ds->surface);
1771 vs->clientds.flags &= ~QEMU_ALLOCATED_FLAG;
1772 vs->write_pixels = vnc_write_pixels_copy;
1773
1774 vnc_write(vs, pad, 3); /* padding */
1775 }
1776
1777 static void vnc_dpy_setdata(DisplayState *ds)
1778 {
1779 /* We don't have to do anything */
1780 }
1781
1782 static void vnc_colordepth(VncState *vs)
1783 {
1784 if (vnc_has_feature(vs, VNC_FEATURE_WMVI)) {
1785 /* Sending a WMVi message to notify the client*/
1786 vnc_write_u8(vs, VNC_MSG_SERVER_FRAMEBUFFER_UPDATE);
1787 vnc_write_u8(vs, 0);
1788 vnc_write_u16(vs, 1); /* number of rects */
1789 vnc_framebuffer_update(vs, 0, 0, ds_get_width(vs->ds),
1790 ds_get_height(vs->ds), VNC_ENCODING_WMVi);
1791 pixel_format_message(vs);
1792 vnc_flush(vs);
1793 } else {
1794 set_pixel_conversion(vs);
1795 }
1796 }
1797
1798 static int protocol_client_msg(VncState *vs, uint8_t *data, size_t len)
1799 {
1800 int i;
1801 uint16_t limit;
1802 VncDisplay *vd = vs->vd;
1803
1804 if (data[0] > 3) {
1805 vd->timer_interval = VNC_REFRESH_INTERVAL_BASE;
1806 if (!qemu_timer_expired(vd->timer, qemu_get_clock(rt_clock) + vd->timer_interval))
1807 qemu_mod_timer(vd->timer, qemu_get_clock(rt_clock) + vd->timer_interval);
1808 }
1809
1810 switch (data[0]) {
1811 case VNC_MSG_CLIENT_SET_PIXEL_FORMAT:
1812 if (len == 1)
1813 return 20;
1814
1815 set_pixel_format(vs, read_u8(data, 4), read_u8(data, 5),
1816 read_u8(data, 6), read_u8(data, 7),
1817 read_u16(data, 8), read_u16(data, 10),
1818 read_u16(data, 12), read_u8(data, 14),
1819 read_u8(data, 15), read_u8(data, 16));
1820 break;
1821 case VNC_MSG_CLIENT_SET_ENCODINGS:
1822 if (len == 1)
1823 return 4;
1824
1825 if (len == 4) {
1826 limit = read_u16(data, 2);
1827 if (limit > 0)
1828 return 4 + (limit * 4);
1829 } else
1830 limit = read_u16(data, 2);
1831
1832 for (i = 0; i < limit; i++) {
1833 int32_t val = read_s32(data, 4 + (i * 4));
1834 memcpy(data + 4 + (i * 4), &val, sizeof(val));
1835 }
1836
1837 set_encodings(vs, (int32_t *)(data + 4), limit);
1838 break;
1839 case VNC_MSG_CLIENT_FRAMEBUFFER_UPDATE_REQUEST:
1840 if (len == 1)
1841 return 10;
1842
1843 framebuffer_update_request(vs,
1844 read_u8(data, 1), read_u16(data, 2), read_u16(data, 4),
1845 read_u16(data, 6), read_u16(data, 8));
1846 break;
1847 case VNC_MSG_CLIENT_KEY_EVENT:
1848 if (len == 1)
1849 return 8;
1850
1851 key_event(vs, read_u8(data, 1), read_u32(data, 4));
1852 break;
1853 case VNC_MSG_CLIENT_POINTER_EVENT:
1854 if (len == 1)
1855 return 6;
1856
1857 pointer_event(vs, read_u8(data, 1), read_u16(data, 2), read_u16(data, 4));
1858 break;
1859 case VNC_MSG_CLIENT_CUT_TEXT:
1860 if (len == 1)
1861 return 8;
1862
1863 if (len == 8) {
1864 uint32_t dlen = read_u32(data, 4);
1865 if (dlen > 0)
1866 return 8 + dlen;
1867 }
1868
1869 client_cut_text(vs, read_u32(data, 4), data + 8);
1870 break;
1871 case VNC_MSG_CLIENT_QEMU:
1872 if (len == 1)
1873 return 2;
1874
1875 switch (read_u8(data, 1)) {
1876 case VNC_MSG_CLIENT_QEMU_EXT_KEY_EVENT:
1877 if (len == 2)
1878 return 12;
1879
1880 ext_key_event(vs, read_u16(data, 2),
1881 read_u32(data, 4), read_u32(data, 8));
1882 break;
1883 case VNC_MSG_CLIENT_QEMU_AUDIO:
1884 if (len == 2)
1885 return 4;
1886
1887 switch (read_u16 (data, 2)) {
1888 case VNC_MSG_CLIENT_QEMU_AUDIO_ENABLE:
1889 audio_add(vs);
1890 break;
1891 case VNC_MSG_CLIENT_QEMU_AUDIO_DISABLE:
1892 audio_del(vs);
1893 break;
1894 case VNC_MSG_CLIENT_QEMU_AUDIO_SET_FORMAT:
1895 if (len == 4)
1896 return 10;
1897 switch (read_u8(data, 4)) {
1898 case 0: vs->as.fmt = AUD_FMT_U8; break;
1899 case 1: vs->as.fmt = AUD_FMT_S8; break;
1900 case 2: vs->as.fmt = AUD_FMT_U16; break;
1901 case 3: vs->as.fmt = AUD_FMT_S16; break;
1902 case 4: vs->as.fmt = AUD_FMT_U32; break;
1903 case 5: vs->as.fmt = AUD_FMT_S32; break;
1904 default:
1905 printf("Invalid audio format %d\n", read_u8(data, 4));
1906 vnc_client_error(vs);
1907 break;
1908 }
1909 vs->as.nchannels = read_u8(data, 5);
1910 if (vs->as.nchannels != 1 && vs->as.nchannels != 2) {
1911 printf("Invalid audio channel coount %d\n",
1912 read_u8(data, 5));
1913 vnc_client_error(vs);
1914 break;
1915 }
1916 vs->as.freq = read_u32(data, 6);
1917 break;
1918 default:
1919 printf ("Invalid audio message %d\n", read_u8(data, 4));
1920 vnc_client_error(vs);
1921 break;
1922 }
1923 break;
1924
1925 default:
1926 printf("Msg: %d\n", read_u16(data, 0));
1927 vnc_client_error(vs);
1928 break;
1929 }
1930 break;
1931 default:
1932 printf("Msg: %d\n", data[0]);
1933 vnc_client_error(vs);
1934 break;
1935 }
1936
1937 vnc_read_when(vs, protocol_client_msg, 1);
1938 return 0;
1939 }
1940
1941 static int protocol_client_init(VncState *vs, uint8_t *data, size_t len)
1942 {
1943 char buf[1024];
1944 int size;
1945
1946 vnc_write_u16(vs, ds_get_width(vs->ds));
1947 vnc_write_u16(vs, ds_get_height(vs->ds));
1948
1949 pixel_format_message(vs);
1950
1951 if (qemu_name)
1952 size = snprintf(buf, sizeof(buf), "QEMU (%s)", qemu_name);
1953 else
1954 size = snprintf(buf, sizeof(buf), "QEMU");
1955
1956 vnc_write_u32(vs, size);
1957 vnc_write(vs, buf, size);
1958 vnc_flush(vs);
1959
1960 vnc_client_cache_auth(vs);
1961 vnc_qmp_event(vs, QEVENT_VNC_INITIALIZED);
1962
1963 vnc_read_when(vs, protocol_client_msg, 1);
1964
1965 return 0;
1966 }
1967
1968 void start_client_init(VncState *vs)
1969 {
1970 vnc_read_when(vs, protocol_client_init, 1);
1971 }
1972
1973 static void make_challenge(VncState *vs)
1974 {
1975 int i;
1976
1977 srand(time(NULL)+getpid()+getpid()*987654+rand());
1978
1979 for (i = 0 ; i < sizeof(vs->challenge) ; i++)
1980 vs->challenge[i] = (int) (256.0*rand()/(RAND_MAX+1.0));
1981 }
1982
1983 static int protocol_client_auth_vnc(VncState *vs, uint8_t *data, size_t len)
1984 {
1985 unsigned char response[VNC_AUTH_CHALLENGE_SIZE];
1986 int i, j, pwlen;
1987 unsigned char key[8];
1988
1989 if (!vs->vd->password || !vs->vd->password[0]) {
1990 VNC_DEBUG("No password configured on server");
1991 vnc_write_u32(vs, 1); /* Reject auth */
1992 if (vs->minor >= 8) {
1993 static const char err[] = "Authentication failed";
1994 vnc_write_u32(vs, sizeof(err));
1995 vnc_write(vs, err, sizeof(err));
1996 }
1997 vnc_flush(vs);
1998 vnc_client_error(vs);
1999 return 0;
2000 }
2001
2002 memcpy(response, vs->challenge, VNC_AUTH_CHALLENGE_SIZE);
2003
2004 /* Calculate the expected challenge response */
2005 pwlen = strlen(vs->vd->password);
2006 for (i=0; i<sizeof(key); i++)
2007 key[i] = i<pwlen ? vs->vd->password[i] : 0;
2008 deskey(key, EN0);
2009 for (j = 0; j < VNC_AUTH_CHALLENGE_SIZE; j += 8)
2010 des(response+j, response+j);
2011
2012 /* Compare expected vs actual challenge response */
2013 if (memcmp(response, data, VNC_AUTH_CHALLENGE_SIZE) != 0) {
2014 VNC_DEBUG("Client challenge reponse did not match\n");
2015 vnc_write_u32(vs, 1); /* Reject auth */
2016 if (vs->minor >= 8) {
2017 static const char err[] = "Authentication failed";
2018 vnc_write_u32(vs, sizeof(err));
2019 vnc_write(vs, err, sizeof(err));
2020 }
2021 vnc_flush(vs);
2022 vnc_client_error(vs);
2023 } else {
2024 VNC_DEBUG("Accepting VNC challenge response\n");
2025 vnc_write_u32(vs, 0); /* Accept auth */
2026 vnc_flush(vs);
2027
2028 start_client_init(vs);
2029 }
2030 return 0;
2031 }
2032
2033 void start_auth_vnc(VncState *vs)
2034 {
2035 make_challenge(vs);
2036 /* Send client a 'random' challenge */
2037 vnc_write(vs, vs->challenge, sizeof(vs->challenge));
2038 vnc_flush(vs);
2039
2040 vnc_read_when(vs, protocol_client_auth_vnc, sizeof(vs->challenge));
2041 }
2042
2043
2044 static int protocol_client_auth(VncState *vs, uint8_t *data, size_t len)
2045 {
2046 /* We only advertise 1 auth scheme at a time, so client
2047 * must pick the one we sent. Verify this */
2048 if (data[0] != vs->vd->auth) { /* Reject auth */
2049 VNC_DEBUG("Reject auth %d because it didn't match advertized\n", (int)data[0]);
2050 vnc_write_u32(vs, 1);
2051 if (vs->minor >= 8) {
2052 static const char err[] = "Authentication failed";
2053 vnc_write_u32(vs, sizeof(err));
2054 vnc_write(vs, err, sizeof(err));
2055 }
2056 vnc_client_error(vs);
2057 } else { /* Accept requested auth */
2058 VNC_DEBUG("Client requested auth %d\n", (int)data[0]);
2059 switch (vs->vd->auth) {
2060 case VNC_AUTH_NONE:
2061 VNC_DEBUG("Accept auth none\n");
2062 if (vs->minor >= 8) {
2063 vnc_write_u32(vs, 0); /* Accept auth completion */
2064 vnc_flush(vs);
2065 }
2066 start_client_init(vs);
2067 break;
2068
2069 case VNC_AUTH_VNC:
2070 VNC_DEBUG("Start VNC auth\n");
2071 start_auth_vnc(vs);
2072 break;
2073
2074 #ifdef CONFIG_VNC_TLS
2075 case VNC_AUTH_VENCRYPT:
2076 VNC_DEBUG("Accept VeNCrypt auth\n");;
2077 start_auth_vencrypt(vs);
2078 break;
2079 #endif /* CONFIG_VNC_TLS */
2080
2081 #ifdef CONFIG_VNC_SASL
2082 case VNC_AUTH_SASL:
2083 VNC_DEBUG("Accept SASL auth\n");
2084 start_auth_sasl(vs);
2085 break;
2086 #endif /* CONFIG_VNC_SASL */
2087
2088 default: /* Should not be possible, but just in case */
2089 VNC_DEBUG("Reject auth %d server code bug\n", vs->vd->auth);
2090 vnc_write_u8(vs, 1);
2091 if (vs->minor >= 8) {
2092 static const char err[] = "Authentication failed";
2093 vnc_write_u32(vs, sizeof(err));
2094 vnc_write(vs, err, sizeof(err));
2095 }
2096 vnc_client_error(vs);
2097 }
2098 }
2099 return 0;
2100 }
2101
2102 static int protocol_version(VncState *vs, uint8_t *version, size_t len)
2103 {
2104 char local[13];
2105
2106 memcpy(local, version, 12);
2107 local[12] = 0;
2108
2109 if (sscanf(local, "RFB %03d.%03d\n", &vs->major, &vs->minor) != 2) {
2110 VNC_DEBUG("Malformed protocol version %s\n", local);
2111 vnc_client_error(vs);
2112 return 0;
2113 }
2114 VNC_DEBUG("Client request protocol version %d.%d\n", vs->major, vs->minor);
2115 if (vs->major != 3 ||
2116 (vs->minor != 3 &&
2117 vs->minor != 4 &&
2118 vs->minor != 5 &&
2119 vs->minor != 7 &&
2120 vs->minor != 8)) {
2121 VNC_DEBUG("Unsupported client version\n");
2122 vnc_write_u32(vs, VNC_AUTH_INVALID);
2123 vnc_flush(vs);
2124 vnc_client_error(vs);
2125 return 0;
2126 }
2127 /* Some broken clients report v3.4 or v3.5, which spec requires to be treated
2128 * as equivalent to v3.3 by servers
2129 */
2130 if (vs->minor == 4 || vs->minor == 5)
2131 vs->minor = 3;
2132
2133 if (vs->minor == 3) {
2134 if (vs->vd->auth == VNC_AUTH_NONE) {
2135 VNC_DEBUG("Tell client auth none\n");
2136 vnc_write_u32(vs, vs->vd->auth);
2137 vnc_flush(vs);
2138 start_client_init(vs);
2139 } else if (vs->vd->auth == VNC_AUTH_VNC) {
2140 VNC_DEBUG("Tell client VNC auth\n");
2141 vnc_write_u32(vs, vs->vd->auth);
2142 vnc_flush(vs);
2143 start_auth_vnc(vs);
2144 } else {
2145 VNC_DEBUG("Unsupported auth %d for protocol 3.3\n", vs->vd->auth);
2146 vnc_write_u32(vs, VNC_AUTH_INVALID);
2147 vnc_flush(vs);
2148 vnc_client_error(vs);
2149 }
2150 } else {
2151 VNC_DEBUG("Telling client we support auth %d\n", vs->vd->auth);
2152 vnc_write_u8(vs, 1); /* num auth */
2153 vnc_write_u8(vs, vs->vd->auth);
2154 vnc_read_when(vs, protocol_client_auth, 1);
2155 vnc_flush(vs);
2156 }
2157
2158 return 0;
2159 }
2160
2161 static int vnc_refresh_server_surface(VncDisplay *vd)
2162 {
2163 int y;
2164 uint8_t *guest_row;
2165 uint8_t *server_row;
2166 int cmp_bytes;
2167 uint32_t width_mask[VNC_DIRTY_WORDS];
2168 VncState *vs;
2169 int has_dirty = 0;
2170
2171 /*
2172 * Walk through the guest dirty map.
2173 * Check and copy modified bits from guest to server surface.
2174 * Update server dirty map.
2175 */
2176 vnc_set_bits(width_mask, (ds_get_width(vd->ds) / 16), VNC_DIRTY_WORDS);
2177 cmp_bytes = 16 * ds_get_bytes_per_pixel(vd->ds);
2178 guest_row = vd->guest.ds->data;
2179 server_row = vd->server->data;
2180 for (y = 0; y < vd->guest.ds->height; y++) {
2181 if (vnc_and_bits(vd->guest.dirty[y], width_mask, VNC_DIRTY_WORDS)) {
2182 int x;
2183 uint8_t *guest_ptr;
2184 uint8_t *server_ptr;
2185
2186 guest_ptr = guest_row;
2187 server_ptr = server_row;
2188
2189 for (x = 0; x < vd->guest.ds->width;
2190 x += 16, guest_ptr += cmp_bytes, server_ptr += cmp_bytes) {
2191 if (!vnc_get_bit(vd->guest.dirty[y], (x / 16)))
2192 continue;
2193 vnc_clear_bit(vd->guest.dirty[y], (x / 16));
2194 if (memcmp(server_ptr, guest_ptr, cmp_bytes) == 0)
2195 continue;
2196 memcpy(server_ptr, guest_ptr, cmp_bytes);
2197 QTAILQ_FOREACH(vs, &vd->clients, next) {
2198 vnc_set_bit(vs->dirty[y], (x / 16));
2199 }
2200 has_dirty++;
2201 }
2202 }
2203 guest_row += ds_get_linesize(vd->ds);
2204 server_row += ds_get_linesize(vd->ds);
2205 }
2206 return has_dirty;
2207 }
2208
2209 static void vnc_refresh(void *opaque)
2210 {
2211 VncDisplay *vd = opaque;
2212 VncState *vs, *vn;
2213 int has_dirty, rects = 0;
2214
2215 vga_hw_update();
2216
2217 has_dirty = vnc_refresh_server_surface(vd);
2218
2219 QTAILQ_FOREACH_SAFE(vs, &vd->clients, next, vn) {
2220 rects += vnc_update_client(vs, has_dirty);
2221 /* vs might be free()ed here */
2222 }
2223 /* vd->timer could be NULL now if the last client disconnected,
2224 * in this case don't update the timer */
2225 if (vd->timer == NULL)
2226 return;
2227
2228 if (has_dirty && rects) {
2229 vd->timer_interval /= 2;
2230 if (vd->timer_interval < VNC_REFRESH_INTERVAL_BASE)
2231 vd->timer_interval = VNC_REFRESH_INTERVAL_BASE;
2232 } else {
2233 vd->timer_interval += VNC_REFRESH_INTERVAL_INC;
2234 if (vd->timer_interval > VNC_REFRESH_INTERVAL_MAX)
2235 vd->timer_interval = VNC_REFRESH_INTERVAL_MAX;
2236 }
2237 qemu_mod_timer(vd->timer, qemu_get_clock(rt_clock) + vd->timer_interval);
2238 }
2239
2240 static void vnc_init_timer(VncDisplay *vd)
2241 {
2242 vd->timer_interval = VNC_REFRESH_INTERVAL_BASE;
2243 if (vd->timer == NULL && !QTAILQ_EMPTY(&vd->clients)) {
2244 vd->timer = qemu_new_timer(rt_clock, vnc_refresh, vd);
2245 vnc_refresh(vd);
2246 }
2247 }
2248
2249 static void vnc_remove_timer(VncDisplay *vd)
2250 {
2251 if (vd->timer != NULL && QTAILQ_EMPTY(&vd->clients)) {
2252 qemu_del_timer(vd->timer);
2253 qemu_free_timer(vd->timer);
2254 vd->timer = NULL;
2255 }
2256 }
2257
2258 static void vnc_connect(VncDisplay *vd, int csock)
2259 {
2260 VncState *vs = qemu_mallocz(sizeof(VncState));
2261 vs->csock = csock;
2262
2263 VNC_DEBUG("New client on socket %d\n", csock);
2264 dcl->idle = 0;
2265 socket_set_nonblock(vs->csock);
2266 qemu_set_fd_handler2(vs->csock, NULL, vnc_client_read, NULL, vs);
2267
2268 vnc_client_cache_addr(vs);
2269 vnc_qmp_event(vs, QEVENT_VNC_CONNECTED);
2270
2271 vs->vd = vd;
2272 vs->ds = vd->ds;
2273 vs->last_x = -1;
2274 vs->last_y = -1;
2275
2276 vs->as.freq = 44100;
2277 vs->as.nchannels = 2;
2278 vs->as.fmt = AUD_FMT_S16;
2279 vs->as.endianness = 0;
2280
2281 QTAILQ_INSERT_HEAD(&vd->clients, vs, next);
2282
2283 vga_hw_update();
2284
2285 vnc_write(vs, "RFB 003.008\n", 12);
2286 vnc_flush(vs);
2287 vnc_read_when(vs, protocol_version, 12);
2288 reset_keys(vs);
2289 if (vs->vd->lock_key_sync)
2290 vs->led = qemu_add_led_event_handler(kbd_leds, vs);
2291
2292 vs->mouse_mode_notifier.notify = check_pointer_type_change;
2293 qemu_add_mouse_mode_change_notifier(&vs->mouse_mode_notifier);
2294
2295 vnc_init_timer(vd);
2296
2297 /* vs might be free()ed here */
2298 }
2299
2300 static void vnc_listen_read(void *opaque)
2301 {
2302 VncDisplay *vs = opaque;
2303 struct sockaddr_in addr;
2304 socklen_t addrlen = sizeof(addr);
2305
2306 /* Catch-up */
2307 vga_hw_update();
2308
2309 int csock = qemu_accept(vs->lsock, (struct sockaddr *)&addr, &addrlen);
2310 if (csock != -1) {
2311 vnc_connect(vs, csock);
2312 }
2313 }
2314
2315 void vnc_display_init(DisplayState *ds)
2316 {
2317 VncDisplay *vs = qemu_mallocz(sizeof(*vs));
2318
2319 dcl = qemu_mallocz(sizeof(DisplayChangeListener));
2320
2321 ds->opaque = vs;
2322 dcl->idle = 1;
2323 vnc_display = vs;
2324
2325 vs->lsock = -1;
2326
2327 vs->ds = ds;
2328 QTAILQ_INIT(&vs->clients);
2329
2330 if (keyboard_layout)
2331 vs->kbd_layout = init_keyboard_layout(name2keysym, keyboard_layout);
2332 else
2333 vs->kbd_layout = init_keyboard_layout(name2keysym, "en-us");
2334
2335 if (!vs->kbd_layout)
2336 exit(1);
2337
2338 dcl->dpy_copy = vnc_dpy_copy;
2339 dcl->dpy_update = vnc_dpy_update;
2340 dcl->dpy_resize = vnc_dpy_resize;
2341 dcl->dpy_setdata = vnc_dpy_setdata;
2342 register_displaychangelistener(ds, dcl);
2343 ds->mouse_set = vnc_mouse_set;
2344 ds->cursor_define = vnc_dpy_cursor_define;
2345 }
2346
2347
2348 void vnc_display_close(DisplayState *ds)
2349 {
2350 VncDisplay *vs = ds ? (VncDisplay *)ds->opaque : vnc_display;
2351
2352 if (!vs)
2353 return;
2354 if (vs->display) {
2355 qemu_free(vs->display);
2356 vs->display = NULL;
2357 }
2358 if (vs->lsock != -1) {
2359 qemu_set_fd_handler2(vs->lsock, NULL, NULL, NULL, NULL);
2360 close(vs->lsock);
2361 vs->lsock = -1;
2362 }
2363 vs->auth = VNC_AUTH_INVALID;
2364 #ifdef CONFIG_VNC_TLS
2365 vs->subauth = VNC_AUTH_INVALID;
2366 vs->tls.x509verify = 0;
2367 #endif
2368 }
2369
2370 int vnc_display_password(DisplayState *ds, const char *password)
2371 {
2372 VncDisplay *vs = ds ? (VncDisplay *)ds->opaque : vnc_display;
2373
2374 if (!vs) {
2375 return -1;
2376 }
2377
2378 if (vs->password) {
2379 qemu_free(vs->password);
2380 vs->password = NULL;
2381 }
2382 if (password && password[0]) {
2383 if (!(vs->password = qemu_strdup(password)))
2384 return -1;
2385 if (vs->auth == VNC_AUTH_NONE) {
2386 vs->auth = VNC_AUTH_VNC;
2387 }
2388 } else {
2389 vs->auth = VNC_AUTH_NONE;
2390 }
2391
2392 return 0;
2393 }
2394
2395 char *vnc_display_local_addr(DisplayState *ds)
2396 {
2397 VncDisplay *vs = ds ? (VncDisplay *)ds->opaque : vnc_display;
2398
2399 return vnc_socket_local_addr("%s:%s", vs->lsock);
2400 }
2401
2402 int vnc_display_open(DisplayState *ds, const char *display)
2403 {
2404 VncDisplay *vs = ds ? (VncDisplay *)ds->opaque : vnc_display;
2405 const char *options;
2406 int password = 0;
2407 int reverse = 0;
2408 #ifdef CONFIG_VNC_TLS
2409 int tls = 0, x509 = 0;
2410 #endif
2411 #ifdef CONFIG_VNC_SASL
2412 int sasl = 0;
2413 int saslErr;
2414 #endif
2415 int acl = 0;
2416 int lock_key_sync = 1;
2417
2418 if (!vnc_display)
2419 return -1;
2420 vnc_display_close(ds);
2421 if (strcmp(display, "none") == 0)
2422 return 0;
2423
2424 if (!(vs->display = strdup(display)))
2425 return -1;
2426
2427 options = display;
2428 while ((options = strchr(options, ','))) {
2429 options++;
2430 if (strncmp(options, "password", 8) == 0) {
2431 password = 1; /* Require password auth */
2432 } else if (strncmp(options, "reverse", 7) == 0) {
2433 reverse = 1;
2434 } else if (strncmp(options, "no-lock-key-sync", 9) == 0) {
2435 lock_key_sync = 0;
2436 #ifdef CONFIG_VNC_SASL
2437 } else if (strncmp(options, "sasl", 4) == 0) {
2438 sasl = 1; /* Require SASL auth */
2439 #endif
2440 #ifdef CONFIG_VNC_TLS
2441 } else if (strncmp(options, "tls", 3) == 0) {
2442 tls = 1; /* Require TLS */
2443 } else if (strncmp(options, "x509", 4) == 0) {
2444 char *start, *end;
2445 x509 = 1; /* Require x509 certificates */
2446 if (strncmp(options, "x509verify", 10) == 0)
2447 vs->tls.x509verify = 1; /* ...and verify client certs */
2448
2449 /* Now check for 'x509=/some/path' postfix
2450 * and use that to setup x509 certificate/key paths */
2451 start = strchr(options, '=');
2452 end = strchr(options, ',');
2453 if (start && (!end || (start < end))) {
2454 int len = end ? end-(start+1) : strlen(start+1);
2455 char *path = qemu_strndup(start + 1, len);
2456
2457 VNC_DEBUG("Trying certificate path '%s'\n", path);
2458 if (vnc_tls_set_x509_creds_dir(vs, path) < 0) {
2459 fprintf(stderr, "Failed to find x509 certificates/keys in %s\n", path);
2460 qemu_free(path);
2461 qemu_free(vs->display);
2462 vs->display = NULL;
2463 return -1;
2464 }
2465 qemu_free(path);
2466 } else {
2467 fprintf(stderr, "No certificate path provided\n");
2468 qemu_free(vs->display);
2469 vs->display = NULL;
2470 return -1;
2471 }
2472 #endif
2473 } else if (strncmp(options, "acl", 3) == 0) {
2474 acl = 1;
2475 }
2476 }
2477
2478 #ifdef CONFIG_VNC_TLS
2479 if (acl && x509 && vs->tls.x509verify) {
2480 if (!(vs->tls.acl = qemu_acl_init("vnc.x509dname"))) {
2481 fprintf(stderr, "Failed to create x509 dname ACL\n");
2482 exit(1);
2483 }
2484 }
2485 #endif
2486 #ifdef CONFIG_VNC_SASL
2487 if (acl && sasl) {
2488 if (!(vs->sasl.acl = qemu_acl_init("vnc.username"))) {
2489 fprintf(stderr, "Failed to create username ACL\n");
2490 exit(1);
2491 }
2492 }
2493 #endif
2494
2495 /*
2496 * Combinations we support here:
2497 *
2498 * - no-auth (clear text, no auth)
2499 * - password (clear text, weak auth)
2500 * - sasl (encrypt, good auth *IF* using Kerberos via GSSAPI)
2501 * - tls (encrypt, weak anonymous creds, no auth)
2502 * - tls + password (encrypt, weak anonymous creds, weak auth)
2503 * - tls + sasl (encrypt, weak anonymous creds, good auth)
2504 * - tls + x509 (encrypt, good x509 creds, no auth)
2505 * - tls + x509 + password (encrypt, good x509 creds, weak auth)
2506 * - tls + x509 + sasl (encrypt, good x509 creds, good auth)
2507 *
2508 * NB1. TLS is a stackable auth scheme.
2509 * NB2. the x509 schemes have option to validate a client cert dname
2510 */
2511 if (password) {
2512 #ifdef CONFIG_VNC_TLS
2513 if (tls) {
2514 vs->auth = VNC_AUTH_VENCRYPT;
2515 if (x509) {
2516 VNC_DEBUG("Initializing VNC server with x509 password auth\n");
2517 vs->subauth = VNC_AUTH_VENCRYPT_X509VNC;
2518 } else {
2519 VNC_DEBUG("Initializing VNC server with TLS password auth\n");
2520 vs->subauth = VNC_AUTH_VENCRYPT_TLSVNC;
2521 }
2522 } else {
2523 #endif /* CONFIG_VNC_TLS */
2524 VNC_DEBUG("Initializing VNC server with password auth\n");
2525 vs->auth = VNC_AUTH_VNC;
2526 #ifdef CONFIG_VNC_TLS
2527 vs->subauth = VNC_AUTH_INVALID;
2528 }
2529 #endif /* CONFIG_VNC_TLS */
2530 #ifdef CONFIG_VNC_SASL
2531 } else if (sasl) {
2532 #ifdef CONFIG_VNC_TLS
2533 if (tls) {
2534 vs->auth = VNC_AUTH_VENCRYPT;
2535 if (x509) {
2536 VNC_DEBUG("Initializing VNC server with x509 SASL auth\n");
2537 vs->subauth = VNC_AUTH_VENCRYPT_X509SASL;
2538 } else {
2539 VNC_DEBUG("Initializing VNC server with TLS SASL auth\n");
2540 vs->subauth = VNC_AUTH_VENCRYPT_TLSSASL;
2541 }
2542 } else {
2543 #endif /* CONFIG_VNC_TLS */
2544 VNC_DEBUG("Initializing VNC server with SASL auth\n");
2545 vs->auth = VNC_AUTH_SASL;
2546 #ifdef CONFIG_VNC_TLS
2547 vs->subauth = VNC_AUTH_INVALID;
2548 }
2549 #endif /* CONFIG_VNC_TLS */
2550 #endif /* CONFIG_VNC_SASL */
2551 } else {
2552 #ifdef CONFIG_VNC_TLS
2553 if (tls) {
2554 vs->auth = VNC_AUTH_VENCRYPT;
2555 if (x509) {
2556 VNC_DEBUG("Initializing VNC server with x509 no auth\n");
2557 vs->subauth = VNC_AUTH_VENCRYPT_X509NONE;
2558 } else {
2559 VNC_DEBUG("Initializing VNC server with TLS no auth\n");
2560 vs->subauth = VNC_AUTH_VENCRYPT_TLSNONE;
2561 }
2562 } else {
2563 #endif
2564 VNC_DEBUG("Initializing VNC server with no auth\n");
2565 vs->auth = VNC_AUTH_NONE;
2566 #ifdef CONFIG_VNC_TLS
2567 vs->subauth = VNC_AUTH_INVALID;
2568 }
2569 #endif
2570 }
2571
2572 #ifdef CONFIG_VNC_SASL
2573 if ((saslErr = sasl_server_init(NULL, "qemu")) != SASL_OK) {
2574 fprintf(stderr, "Failed to initialize SASL auth %s",
2575 sasl_errstring(saslErr, NULL, NULL));
2576 free(vs->display);
2577 vs->display = NULL;
2578 return -1;
2579 }
2580 #endif
2581 vs->lock_key_sync = lock_key_sync;
2582
2583 if (reverse) {
2584 /* connect to viewer */
2585 if (strncmp(display, "unix:", 5) == 0)
2586 vs->lsock = unix_connect(display+5);
2587 else
2588 vs->lsock = inet_connect(display, SOCK_STREAM);
2589 if (-1 == vs->lsock) {
2590 free(vs->display);
2591 vs->display = NULL;
2592 return -1;
2593 } else {
2594 int csock = vs->lsock;
2595 vs->lsock = -1;
2596 vnc_connect(vs, csock);
2597 }
2598 return 0;
2599
2600 } else {
2601 /* listen for connects */
2602 char *dpy;
2603 dpy = qemu_malloc(256);
2604 if (strncmp(display, "unix:", 5) == 0) {
2605 pstrcpy(dpy, 256, "unix:");
2606 vs->lsock = unix_listen(display+5, dpy+5, 256-5);
2607 } else {
2608 vs->lsock = inet_listen(display, dpy, 256, SOCK_STREAM, 5900);
2609 }
2610 if (-1 == vs->lsock) {
2611 free(dpy);
2612 return -1;
2613 } else {
2614 free(vs->display);
2615 vs->display = dpy;
2616 }
2617 }
2618 return qemu_set_fd_handler2(vs->lsock, NULL, vnc_listen_read, NULL, vs);
2619 }
QEmu