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cirrus: Unbreak ISA support
[qemu.git] / ui / vnc.c
blobfc3a612a352c1abe4d4415477cf871c90362d6f5
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 "vnc-jobs.h"
29 #include "sysemu.h"
30 #include "qemu_socket.h"
31 #include "qemu-timer.h"
32 #include "acl.h"
33 #include "qemu-objects.h"
34
35 #define VNC_REFRESH_INTERVAL_BASE 30
36 #define VNC_REFRESH_INTERVAL_INC 50
37 #define VNC_REFRESH_INTERVAL_MAX 2000
38 static const struct timeval VNC_REFRESH_STATS = { 0, 500000 };
39 static const struct timeval VNC_REFRESH_LOSSY = { 2, 0 };
40
41 #include "vnc_keysym.h"
42 #include "d3des.h"
43
44 static VncDisplay *vnc_display; /* needed for info vnc */
45 static DisplayChangeListener *dcl;
46
47 static int vnc_cursor_define(VncState *vs);
48
49 static char *addr_to_string(const char *format,
50 struct sockaddr_storage *sa,
51 socklen_t salen) {
52 char *addr;
53 char host[NI_MAXHOST];
54 char serv[NI_MAXSERV];
55 int err;
56 size_t addrlen;
57
58 if ((err = getnameinfo((struct sockaddr *)sa, salen,
59 host, sizeof(host),
60 serv, sizeof(serv),
61 NI_NUMERICHOST | NI_NUMERICSERV)) != 0) {
62 VNC_DEBUG("Cannot resolve address %d: %s\n",
63 err, gai_strerror(err));
64 return NULL;
65 }
66
67 /* Enough for the existing format + the 2 vars we're
68 * substituting in. */
69 addrlen = strlen(format) + strlen(host) + strlen(serv);
70 addr = g_malloc(addrlen + 1);
71 snprintf(addr, addrlen, format, host, serv);
72 addr[addrlen] = '\0';
73
74 return addr;
75 }
76
77
78 char *vnc_socket_local_addr(const char *format, int fd) {
79 struct sockaddr_storage sa;
80 socklen_t salen;
81
82 salen = sizeof(sa);
83 if (getsockname(fd, (struct sockaddr*)&sa, &salen) < 0)
84 return NULL;
85
86 return addr_to_string(format, &sa, salen);
87 }
88
89 char *vnc_socket_remote_addr(const char *format, int fd) {
90 struct sockaddr_storage sa;
91 socklen_t salen;
92
93 salen = sizeof(sa);
94 if (getpeername(fd, (struct sockaddr*)&sa, &salen) < 0)
95 return NULL;
96
97 return addr_to_string(format, &sa, salen);
98 }
99
100 static int put_addr_qdict(QDict *qdict, struct sockaddr_storage *sa,
101 socklen_t salen)
102 {
103 char host[NI_MAXHOST];
104 char serv[NI_MAXSERV];
105 int err;
106
107 if ((err = getnameinfo((struct sockaddr *)sa, salen,
108 host, sizeof(host),
109 serv, sizeof(serv),
110 NI_NUMERICHOST | NI_NUMERICSERV)) != 0) {
111 VNC_DEBUG("Cannot resolve address %d: %s\n",
112 err, gai_strerror(err));
113 return -1;
114 }
115
116 qdict_put(qdict, "host", qstring_from_str(host));
117 qdict_put(qdict, "service", qstring_from_str(serv));
118 qdict_put(qdict, "family",qstring_from_str(inet_strfamily(sa->ss_family)));
119
120 return 0;
121 }
122
123 static int vnc_server_addr_put(QDict *qdict, int fd)
124 {
125 struct sockaddr_storage sa;
126 socklen_t salen;
127
128 salen = sizeof(sa);
129 if (getsockname(fd, (struct sockaddr*)&sa, &salen) < 0) {
130 return -1;
131 }
132
133 return put_addr_qdict(qdict, &sa, salen);
134 }
135
136 static int vnc_qdict_remote_addr(QDict *qdict, int fd)
137 {
138 struct sockaddr_storage sa;
139 socklen_t salen;
140
141 salen = sizeof(sa);
142 if (getpeername(fd, (struct sockaddr*)&sa, &salen) < 0) {
143 return -1;
144 }
145
146 return put_addr_qdict(qdict, &sa, salen);
147 }
148
149 static const char *vnc_auth_name(VncDisplay *vd) {
150 switch (vd->auth) {
151 case VNC_AUTH_INVALID:
152 return "invalid";
153 case VNC_AUTH_NONE:
154 return "none";
155 case VNC_AUTH_VNC:
156 return "vnc";
157 case VNC_AUTH_RA2:
158 return "ra2";
159 case VNC_AUTH_RA2NE:
160 return "ra2ne";
161 case VNC_AUTH_TIGHT:
162 return "tight";
163 case VNC_AUTH_ULTRA:
164 return "ultra";
165 case VNC_AUTH_TLS:
166 return "tls";
167 case VNC_AUTH_VENCRYPT:
168 #ifdef CONFIG_VNC_TLS
169 switch (vd->subauth) {
170 case VNC_AUTH_VENCRYPT_PLAIN:
171 return "vencrypt+plain";
172 case VNC_AUTH_VENCRYPT_TLSNONE:
173 return "vencrypt+tls+none";
174 case VNC_AUTH_VENCRYPT_TLSVNC:
175 return "vencrypt+tls+vnc";
176 case VNC_AUTH_VENCRYPT_TLSPLAIN:
177 return "vencrypt+tls+plain";
178 case VNC_AUTH_VENCRYPT_X509NONE:
179 return "vencrypt+x509+none";
180 case VNC_AUTH_VENCRYPT_X509VNC:
181 return "vencrypt+x509+vnc";
182 case VNC_AUTH_VENCRYPT_X509PLAIN:
183 return "vencrypt+x509+plain";
184 case VNC_AUTH_VENCRYPT_TLSSASL:
185 return "vencrypt+tls+sasl";
186 case VNC_AUTH_VENCRYPT_X509SASL:
187 return "vencrypt+x509+sasl";
188 default:
189 return "vencrypt";
190 }
191 #else
192 return "vencrypt";
193 #endif
194 case VNC_AUTH_SASL:
195 return "sasl";
196 }
197 return "unknown";
198 }
199
200 static int vnc_server_info_put(QDict *qdict)
201 {
202 if (vnc_server_addr_put(qdict, vnc_display->lsock) < 0) {
203 return -1;
204 }
205
206 qdict_put(qdict, "auth", qstring_from_str(vnc_auth_name(vnc_display)));
207 return 0;
208 }
209
210 static void vnc_client_cache_auth(VncState *client)
211 {
212 #if defined(CONFIG_VNC_TLS) || defined(CONFIG_VNC_SASL)
213 QDict *qdict;
214 #endif
215
216 if (!client->info) {
217 return;
218 }
219
220 #if defined(CONFIG_VNC_TLS) || defined(CONFIG_VNC_SASL)
221 qdict = qobject_to_qdict(client->info);
222 #endif
223
224 #ifdef CONFIG_VNC_TLS
225 if (client->tls.session &&
226 client->tls.dname) {
227 qdict_put(qdict, "x509_dname", qstring_from_str(client->tls.dname));
228 }
229 #endif
230 #ifdef CONFIG_VNC_SASL
231 if (client->sasl.conn &&
232 client->sasl.username) {
233 qdict_put(qdict, "sasl_username",
234 qstring_from_str(client->sasl.username));
235 }
236 #endif
237 }
238
239 static void vnc_client_cache_addr(VncState *client)
240 {
241 QDict *qdict;
242
243 qdict = qdict_new();
244 if (vnc_qdict_remote_addr(qdict, client->csock) < 0) {
245 QDECREF(qdict);
246 /* XXX: how to report the error? */
247 return;
248 }
249
250 client->info = QOBJECT(qdict);
251 }
252
253 static void vnc_qmp_event(VncState *vs, MonitorEvent event)
254 {
255 QDict *server;
256 QObject *data;
257
258 if (!vs->info) {
259 return;
260 }
261
262 server = qdict_new();
263 if (vnc_server_info_put(server) < 0) {
264 QDECREF(server);
265 return;
266 }
267
268 data = qobject_from_jsonf("{ 'client': %p, 'server': %p }",
269 vs->info, QOBJECT(server));
270
271 monitor_protocol_event(event, data);
272
273 qobject_incref(vs->info);
274 qobject_decref(data);
275 }
276
277 static void info_vnc_iter(QObject *obj, void *opaque)
278 {
279 QDict *client;
280 Monitor *mon = opaque;
281
282 client = qobject_to_qdict(obj);
283 monitor_printf(mon, "Client:\n");
284 monitor_printf(mon, " address: %s:%s\n",
285 qdict_get_str(client, "host"),
286 qdict_get_str(client, "service"));
287
288 #ifdef CONFIG_VNC_TLS
289 monitor_printf(mon, " x509_dname: %s\n",
290 qdict_haskey(client, "x509_dname") ?
291 qdict_get_str(client, "x509_dname") : "none");
292 #endif
293 #ifdef CONFIG_VNC_SASL
294 monitor_printf(mon, " username: %s\n",
295 qdict_haskey(client, "sasl_username") ?
296 qdict_get_str(client, "sasl_username") : "none");
297 #endif
298 }
299
300 void do_info_vnc_print(Monitor *mon, const QObject *data)
301 {
302 QDict *server;
303 QList *clients;
304
305 server = qobject_to_qdict(data);
306 if (qdict_get_bool(server, "enabled") == 0) {
307 monitor_printf(mon, "Server: disabled\n");
308 return;
309 }
310
311 monitor_printf(mon, "Server:\n");
312 monitor_printf(mon, " address: %s:%s\n",
313 qdict_get_str(server, "host"),
314 qdict_get_str(server, "service"));
315 monitor_printf(mon, " auth: %s\n", qdict_get_str(server, "auth"));
316
317 clients = qdict_get_qlist(server, "clients");
318 if (qlist_empty(clients)) {
319 monitor_printf(mon, "Client: none\n");
320 } else {
321 qlist_iter(clients, info_vnc_iter, mon);
322 }
323 }
324
325 void do_info_vnc(Monitor *mon, QObject **ret_data)
326 {
327 if (vnc_display == NULL || vnc_display->display == NULL) {
328 *ret_data = qobject_from_jsonf("{ 'enabled': false }");
329 } else {
330 QList *clist;
331 VncState *client;
332
333 clist = qlist_new();
334 QTAILQ_FOREACH(client, &vnc_display->clients, next) {
335 if (client->info) {
336 /* incref so that it's not freed by upper layers */
337 qobject_incref(client->info);
338 qlist_append_obj(clist, client->info);
339 }
340 }
341
342 *ret_data = qobject_from_jsonf("{ 'enabled': true, 'clients': %p }",
343 QOBJECT(clist));
344 assert(*ret_data != NULL);
345
346 if (vnc_server_info_put(qobject_to_qdict(*ret_data)) < 0) {
347 qobject_decref(*ret_data);
348 *ret_data = NULL;
349 }
350 }
351 }
352
353 /* TODO
354 1) Get the queue working for IO.
355 2) there is some weirdness when using the -S option (the screen is grey
356 and not totally invalidated
357 3) resolutions > 1024
358 */
359
360 static int vnc_update_client(VncState *vs, int has_dirty);
361 static int vnc_update_client_sync(VncState *vs, int has_dirty);
362 static void vnc_disconnect_start(VncState *vs);
363 static void vnc_disconnect_finish(VncState *vs);
364 static void vnc_init_timer(VncDisplay *vd);
365 static void vnc_remove_timer(VncDisplay *vd);
366
367 static void vnc_colordepth(VncState *vs);
368 static void framebuffer_update_request(VncState *vs, int incremental,
369 int x_position, int y_position,
370 int w, int h);
371 static void vnc_refresh(void *opaque);
372 static int vnc_refresh_server_surface(VncDisplay *vd);
373
374 static void vnc_dpy_update(DisplayState *ds, int x, int y, int w, int h)
375 {
376 int i;
377 VncDisplay *vd = ds->opaque;
378 struct VncSurface *s = &vd->guest;
379
380 h += y;
381
382 /* round x down to ensure the loop only spans one 16-pixel block per,
383 iteration. otherwise, if (x % 16) != 0, the last iteration may span
384 two 16-pixel blocks but we only mark the first as dirty
385 */
386 w += (x % 16);
387 x -= (x % 16);
388
389 x = MIN(x, s->ds->width);
390 y = MIN(y, s->ds->height);
391 w = MIN(x + w, s->ds->width) - x;
392 h = MIN(h, s->ds->height);
393
394 for (; y < h; y++)
395 for (i = 0; i < w; i += 16)
396 set_bit((x + i) / 16, s->dirty[y]);
397 }
398
399 void vnc_framebuffer_update(VncState *vs, int x, int y, int w, int h,
400 int32_t encoding)
401 {
402 vnc_write_u16(vs, x);
403 vnc_write_u16(vs, y);
404 vnc_write_u16(vs, w);
405 vnc_write_u16(vs, h);
406
407 vnc_write_s32(vs, encoding);
408 }
409
410 void buffer_reserve(Buffer *buffer, size_t len)
411 {
412 if ((buffer->capacity - buffer->offset) < len) {
413 buffer->capacity += (len + 1024);
414 buffer->buffer = g_realloc(buffer->buffer, buffer->capacity);
415 if (buffer->buffer == NULL) {
416 fprintf(stderr, "vnc: out of memory\n");
417 exit(1);
418 }
419 }
420 }
421
422 int buffer_empty(Buffer *buffer)
423 {
424 return buffer->offset == 0;
425 }
426
427 uint8_t *buffer_end(Buffer *buffer)
428 {
429 return buffer->buffer + buffer->offset;
430 }
431
432 void buffer_reset(Buffer *buffer)
433 {
434 buffer->offset = 0;
435 }
436
437 void buffer_free(Buffer *buffer)
438 {
439 g_free(buffer->buffer);
440 buffer->offset = 0;
441 buffer->capacity = 0;
442 buffer->buffer = NULL;
443 }
444
445 void buffer_append(Buffer *buffer, const void *data, size_t len)
446 {
447 memcpy(buffer->buffer + buffer->offset, data, len);
448 buffer->offset += len;
449 }
450
451 static void vnc_desktop_resize(VncState *vs)
452 {
453 DisplayState *ds = vs->ds;
454
455 if (vs->csock == -1 || !vnc_has_feature(vs, VNC_FEATURE_RESIZE)) {
456 return;
457 }
458 if (vs->client_width == ds_get_width(ds) &&
459 vs->client_height == ds_get_height(ds)) {
460 return;
461 }
462 vs->client_width = ds_get_width(ds);
463 vs->client_height = ds_get_height(ds);
464 vnc_lock_output(vs);
465 vnc_write_u8(vs, VNC_MSG_SERVER_FRAMEBUFFER_UPDATE);
466 vnc_write_u8(vs, 0);
467 vnc_write_u16(vs, 1); /* number of rects */
468 vnc_framebuffer_update(vs, 0, 0, vs->client_width, vs->client_height,
469 VNC_ENCODING_DESKTOPRESIZE);
470 vnc_unlock_output(vs);
471 vnc_flush(vs);
472 }
473
474 #ifdef CONFIG_VNC_THREAD
475 static void vnc_abort_display_jobs(VncDisplay *vd)
476 {
477 VncState *vs;
478
479 QTAILQ_FOREACH(vs, &vd->clients, next) {
480 vnc_lock_output(vs);
481 vs->abort = true;
482 vnc_unlock_output(vs);
483 }
484 QTAILQ_FOREACH(vs, &vd->clients, next) {
485 vnc_jobs_join(vs);
486 }
487 QTAILQ_FOREACH(vs, &vd->clients, next) {
488 vnc_lock_output(vs);
489 vs->abort = false;
490 vnc_unlock_output(vs);
491 }
492 }
493 #else
494 static void vnc_abort_display_jobs(VncDisplay *vd)
495 {
496 }
497 #endif
498
499 static void vnc_dpy_resize(DisplayState *ds)
500 {
501 VncDisplay *vd = ds->opaque;
502 VncState *vs;
503
504 vnc_abort_display_jobs(vd);
505
506 /* server surface */
507 if (!vd->server)
508 vd->server = g_malloc0(sizeof(*vd->server));
509 if (vd->server->data)
510 g_free(vd->server->data);
511 *(vd->server) = *(ds->surface);
512 vd->server->data = g_malloc0(vd->server->linesize *
513 vd->server->height);
514
515 /* guest surface */
516 if (!vd->guest.ds)
517 vd->guest.ds = g_malloc0(sizeof(*vd->guest.ds));
518 if (ds_get_bytes_per_pixel(ds) != vd->guest.ds->pf.bytes_per_pixel)
519 console_color_init(ds);
520 *(vd->guest.ds) = *(ds->surface);
521 memset(vd->guest.dirty, 0xFF, sizeof(vd->guest.dirty));
522
523 QTAILQ_FOREACH(vs, &vd->clients, next) {
524 vnc_colordepth(vs);
525 vnc_desktop_resize(vs);
526 if (vs->vd->cursor) {
527 vnc_cursor_define(vs);
528 }
529 memset(vs->dirty, 0xFF, sizeof(vs->dirty));
530 }
531 }
532
533 /* fastest code */
534 static void vnc_write_pixels_copy(VncState *vs, struct PixelFormat *pf,
535 void *pixels, int size)
536 {
537 vnc_write(vs, pixels, size);
538 }
539
540 /* slowest but generic code. */
541 void vnc_convert_pixel(VncState *vs, uint8_t *buf, uint32_t v)
542 {
543 uint8_t r, g, b;
544 VncDisplay *vd = vs->vd;
545
546 r = ((((v & vd->server->pf.rmask) >> vd->server->pf.rshift) << vs->clientds.pf.rbits) >>
547 vd->server->pf.rbits);
548 g = ((((v & vd->server->pf.gmask) >> vd->server->pf.gshift) << vs->clientds.pf.gbits) >>
549 vd->server->pf.gbits);
550 b = ((((v & vd->server->pf.bmask) >> vd->server->pf.bshift) << vs->clientds.pf.bbits) >>
551 vd->server->pf.bbits);
552 v = (r << vs->clientds.pf.rshift) |
553 (g << vs->clientds.pf.gshift) |
554 (b << vs->clientds.pf.bshift);
555 switch(vs->clientds.pf.bytes_per_pixel) {
556 case 1:
557 buf[0] = v;
558 break;
559 case 2:
560 if (vs->clientds.flags & QEMU_BIG_ENDIAN_FLAG) {
561 buf[0] = v >> 8;
562 buf[1] = v;
563 } else {
564 buf[1] = v >> 8;
565 buf[0] = v;
566 }
567 break;
568 default:
569 case 4:
570 if (vs->clientds.flags & QEMU_BIG_ENDIAN_FLAG) {
571 buf[0] = v >> 24;
572 buf[1] = v >> 16;
573 buf[2] = v >> 8;
574 buf[3] = v;
575 } else {
576 buf[3] = v >> 24;
577 buf[2] = v >> 16;
578 buf[1] = v >> 8;
579 buf[0] = v;
580 }
581 break;
582 }
583 }
584
585 static void vnc_write_pixels_generic(VncState *vs, struct PixelFormat *pf,
586 void *pixels1, int size)
587 {
588 uint8_t buf[4];
589
590 if (pf->bytes_per_pixel == 4) {
591 uint32_t *pixels = pixels1;
592 int n, i;
593 n = size >> 2;
594 for(i = 0; i < n; i++) {
595 vnc_convert_pixel(vs, buf, pixels[i]);
596 vnc_write(vs, buf, vs->clientds.pf.bytes_per_pixel);
597 }
598 } else if (pf->bytes_per_pixel == 2) {
599 uint16_t *pixels = pixels1;
600 int n, i;
601 n = size >> 1;
602 for(i = 0; i < n; i++) {
603 vnc_convert_pixel(vs, buf, pixels[i]);
604 vnc_write(vs, buf, vs->clientds.pf.bytes_per_pixel);
605 }
606 } else if (pf->bytes_per_pixel == 1) {
607 uint8_t *pixels = pixels1;
608 int n, i;
609 n = size;
610 for(i = 0; i < n; i++) {
611 vnc_convert_pixel(vs, buf, pixels[i]);
612 vnc_write(vs, buf, vs->clientds.pf.bytes_per_pixel);
613 }
614 } else {
615 fprintf(stderr, "vnc_write_pixels_generic: VncState color depth not supported\n");
616 }
617 }
618
619 int vnc_raw_send_framebuffer_update(VncState *vs, int x, int y, int w, int h)
620 {
621 int i;
622 uint8_t *row;
623 VncDisplay *vd = vs->vd;
624
625 row = vd->server->data + y * ds_get_linesize(vs->ds) + x * ds_get_bytes_per_pixel(vs->ds);
626 for (i = 0; i < h; i++) {
627 vs->write_pixels(vs, &vd->server->pf, row, w * ds_get_bytes_per_pixel(vs->ds));
628 row += ds_get_linesize(vs->ds);
629 }
630 return 1;
631 }
632
633 int vnc_send_framebuffer_update(VncState *vs, int x, int y, int w, int h)
634 {
635 int n = 0;
636
637 switch(vs->vnc_encoding) {
638 case VNC_ENCODING_ZLIB:
639 n = vnc_zlib_send_framebuffer_update(vs, x, y, w, h);
640 break;
641 case VNC_ENCODING_HEXTILE:
642 vnc_framebuffer_update(vs, x, y, w, h, VNC_ENCODING_HEXTILE);
643 n = vnc_hextile_send_framebuffer_update(vs, x, y, w, h);
644 break;
645 case VNC_ENCODING_TIGHT:
646 n = vnc_tight_send_framebuffer_update(vs, x, y, w, h);
647 break;
648 case VNC_ENCODING_TIGHT_PNG:
649 n = vnc_tight_png_send_framebuffer_update(vs, x, y, w, h);
650 break;
651 case VNC_ENCODING_ZRLE:
652 n = vnc_zrle_send_framebuffer_update(vs, x, y, w, h);
653 break;
654 case VNC_ENCODING_ZYWRLE:
655 n = vnc_zywrle_send_framebuffer_update(vs, x, y, w, h);
656 break;
657 default:
658 vnc_framebuffer_update(vs, x, y, w, h, VNC_ENCODING_RAW);
659 n = vnc_raw_send_framebuffer_update(vs, x, y, w, h);
660 break;
661 }
662 return n;
663 }
664
665 static void vnc_copy(VncState *vs, int src_x, int src_y, int dst_x, int dst_y, int w, int h)
666 {
667 /* send bitblit op to the vnc client */
668 vnc_lock_output(vs);
669 vnc_write_u8(vs, VNC_MSG_SERVER_FRAMEBUFFER_UPDATE);
670 vnc_write_u8(vs, 0);
671 vnc_write_u16(vs, 1); /* number of rects */
672 vnc_framebuffer_update(vs, dst_x, dst_y, w, h, VNC_ENCODING_COPYRECT);
673 vnc_write_u16(vs, src_x);
674 vnc_write_u16(vs, src_y);
675 vnc_unlock_output(vs);
676 vnc_flush(vs);
677 }
678
679 static void vnc_dpy_copy(DisplayState *ds, int src_x, int src_y, int dst_x, int dst_y, int w, int h)
680 {
681 VncDisplay *vd = ds->opaque;
682 VncState *vs, *vn;
683 uint8_t *src_row;
684 uint8_t *dst_row;
685 int i,x,y,pitch,depth,inc,w_lim,s;
686 int cmp_bytes;
687
688 vnc_refresh_server_surface(vd);
689 QTAILQ_FOREACH_SAFE(vs, &vd->clients, next, vn) {
690 if (vnc_has_feature(vs, VNC_FEATURE_COPYRECT)) {
691 vs->force_update = 1;
692 vnc_update_client_sync(vs, 1);
693 /* vs might be free()ed here */
694 }
695 }
696
697 /* do bitblit op on the local surface too */
698 pitch = ds_get_linesize(vd->ds);
699 depth = ds_get_bytes_per_pixel(vd->ds);
700 src_row = vd->server->data + pitch * src_y + depth * src_x;
701 dst_row = vd->server->data + pitch * dst_y + depth * dst_x;
702 y = dst_y;
703 inc = 1;
704 if (dst_y > src_y) {
705 /* copy backwards */
706 src_row += pitch * (h-1);
707 dst_row += pitch * (h-1);
708 pitch = -pitch;
709 y = dst_y + h - 1;
710 inc = -1;
711 }
712 w_lim = w - (16 - (dst_x % 16));
713 if (w_lim < 0)
714 w_lim = w;
715 else
716 w_lim = w - (w_lim % 16);
717 for (i = 0; i < h; i++) {
718 for (x = 0; x <= w_lim;
719 x += s, src_row += cmp_bytes, dst_row += cmp_bytes) {
720 if (x == w_lim) {
721 if ((s = w - w_lim) == 0)
722 break;
723 } else if (!x) {
724 s = (16 - (dst_x % 16));
725 s = MIN(s, w_lim);
726 } else {
727 s = 16;
728 }
729 cmp_bytes = s * depth;
730 if (memcmp(src_row, dst_row, cmp_bytes) == 0)
731 continue;
732 memmove(dst_row, src_row, cmp_bytes);
733 QTAILQ_FOREACH(vs, &vd->clients, next) {
734 if (!vnc_has_feature(vs, VNC_FEATURE_COPYRECT)) {
735 set_bit(((x + dst_x) / 16), vs->dirty[y]);
736 }
737 }
738 }
739 src_row += pitch - w * depth;
740 dst_row += pitch - w * depth;
741 y += inc;
742 }
743
744 QTAILQ_FOREACH(vs, &vd->clients, next) {
745 if (vnc_has_feature(vs, VNC_FEATURE_COPYRECT)) {
746 vnc_copy(vs, src_x, src_y, dst_x, dst_y, w, h);
747 }
748 }
749 }
750
751 static void vnc_mouse_set(int x, int y, int visible)
752 {
753 /* can we ask the client(s) to move the pointer ??? */
754 }
755
756 static int vnc_cursor_define(VncState *vs)
757 {
758 QEMUCursor *c = vs->vd->cursor;
759 PixelFormat pf = qemu_default_pixelformat(32);
760 int isize;
761
762 if (vnc_has_feature(vs, VNC_FEATURE_RICH_CURSOR)) {
763 vnc_lock_output(vs);
764 vnc_write_u8(vs, VNC_MSG_SERVER_FRAMEBUFFER_UPDATE);
765 vnc_write_u8(vs, 0); /* padding */
766 vnc_write_u16(vs, 1); /* # of rects */
767 vnc_framebuffer_update(vs, c->hot_x, c->hot_y, c->width, c->height,
768 VNC_ENCODING_RICH_CURSOR);
769 isize = c->width * c->height * vs->clientds.pf.bytes_per_pixel;
770 vnc_write_pixels_generic(vs, &pf, c->data, isize);
771 vnc_write(vs, vs->vd->cursor_mask, vs->vd->cursor_msize);
772 vnc_unlock_output(vs);
773 return 0;
774 }
775 return -1;
776 }
777
778 static void vnc_dpy_cursor_define(QEMUCursor *c)
779 {
780 VncDisplay *vd = vnc_display;
781 VncState *vs;
782
783 cursor_put(vd->cursor);
784 g_free(vd->cursor_mask);
785
786 vd->cursor = c;
787 cursor_get(vd->cursor);
788 vd->cursor_msize = cursor_get_mono_bpl(c) * c->height;
789 vd->cursor_mask = g_malloc0(vd->cursor_msize);
790 cursor_get_mono_mask(c, 0, vd->cursor_mask);
791
792 QTAILQ_FOREACH(vs, &vd->clients, next) {
793 vnc_cursor_define(vs);
794 }
795 }
796
797 static int find_and_clear_dirty_height(struct VncState *vs,
798 int y, int last_x, int x, int height)
799 {
800 int h;
801
802 for (h = 1; h < (height - y); h++) {
803 int tmp_x;
804 if (!test_bit(last_x, vs->dirty[y + h])) {
805 break;
806 }
807 for (tmp_x = last_x; tmp_x < x; tmp_x++) {
808 clear_bit(tmp_x, vs->dirty[y + h]);
809 }
810 }
811
812 return h;
813 }
814
815 #ifdef CONFIG_VNC_THREAD
816 static int vnc_update_client_sync(VncState *vs, int has_dirty)
817 {
818 int ret = vnc_update_client(vs, has_dirty);
819 vnc_jobs_join(vs);
820 return ret;
821 }
822 #else
823 static int vnc_update_client_sync(VncState *vs, int has_dirty)
824 {
825 return vnc_update_client(vs, has_dirty);
826 }
827 #endif
828
829 static int vnc_update_client(VncState *vs, int has_dirty)
830 {
831 if (vs->need_update && vs->csock != -1) {
832 VncDisplay *vd = vs->vd;
833 VncJob *job;
834 int y;
835 int width, height;
836 int n = 0;
837
838
839 if (vs->output.offset && !vs->audio_cap && !vs->force_update)
840 /* kernel send buffers are full -> drop frames to throttle */
841 return 0;
842
843 if (!has_dirty && !vs->audio_cap && !vs->force_update)
844 return 0;
845
846 /*
847 * Send screen updates to the vnc client using the server
848 * surface and server dirty map. guest surface updates
849 * happening in parallel don't disturb us, the next pass will
850 * send them to the client.
851 */
852 job = vnc_job_new(vs);
853
854 width = MIN(vd->server->width, vs->client_width);
855 height = MIN(vd->server->height, vs->client_height);
856
857 for (y = 0; y < height; y++) {
858 int x;
859 int last_x = -1;
860 for (x = 0; x < width / 16; x++) {
861 if (test_and_clear_bit(x, vs->dirty[y])) {
862 if (last_x == -1) {
863 last_x = x;
864 }
865 } else {
866 if (last_x != -1) {
867 int h = find_and_clear_dirty_height(vs, y, last_x, x,
868 height);
869
870 n += vnc_job_add_rect(job, last_x * 16, y,
871 (x - last_x) * 16, h);
872 }
873 last_x = -1;
874 }
875 }
876 if (last_x != -1) {
877 int h = find_and_clear_dirty_height(vs, y, last_x, x, height);
878 n += vnc_job_add_rect(job, last_x * 16, y,
879 (x - last_x) * 16, h);
880 }
881 }
882
883 vnc_job_push(job);
884 vs->force_update = 0;
885 return n;
886 }
887
888 if (vs->csock == -1)
889 vnc_disconnect_finish(vs);
890
891 return 0;
892 }
893
894 /* audio */
895 static void audio_capture_notify(void *opaque, audcnotification_e cmd)
896 {
897 VncState *vs = opaque;
898
899 switch (cmd) {
900 case AUD_CNOTIFY_DISABLE:
901 vnc_lock_output(vs);
902 vnc_write_u8(vs, VNC_MSG_SERVER_QEMU);
903 vnc_write_u8(vs, VNC_MSG_SERVER_QEMU_AUDIO);
904 vnc_write_u16(vs, VNC_MSG_SERVER_QEMU_AUDIO_END);
905 vnc_unlock_output(vs);
906 vnc_flush(vs);
907 break;
908
909 case AUD_CNOTIFY_ENABLE:
910 vnc_lock_output(vs);
911 vnc_write_u8(vs, VNC_MSG_SERVER_QEMU);
912 vnc_write_u8(vs, VNC_MSG_SERVER_QEMU_AUDIO);
913 vnc_write_u16(vs, VNC_MSG_SERVER_QEMU_AUDIO_BEGIN);
914 vnc_unlock_output(vs);
915 vnc_flush(vs);
916 break;
917 }
918 }
919
920 static void audio_capture_destroy(void *opaque)
921 {
922 }
923
924 static void audio_capture(void *opaque, void *buf, int size)
925 {
926 VncState *vs = opaque;
927
928 vnc_lock_output(vs);
929 vnc_write_u8(vs, VNC_MSG_SERVER_QEMU);
930 vnc_write_u8(vs, VNC_MSG_SERVER_QEMU_AUDIO);
931 vnc_write_u16(vs, VNC_MSG_SERVER_QEMU_AUDIO_DATA);
932 vnc_write_u32(vs, size);
933 vnc_write(vs, buf, size);
934 vnc_unlock_output(vs);
935 vnc_flush(vs);
936 }
937
938 static void audio_add(VncState *vs)
939 {
940 struct audio_capture_ops ops;
941
942 if (vs->audio_cap) {
943 monitor_printf(default_mon, "audio already running\n");
944 return;
945 }
946
947 ops.notify = audio_capture_notify;
948 ops.destroy = audio_capture_destroy;
949 ops.capture = audio_capture;
950
951 vs->audio_cap = AUD_add_capture(&vs->as, &ops, vs);
952 if (!vs->audio_cap) {
953 monitor_printf(default_mon, "Failed to add audio capture\n");
954 }
955 }
956
957 static void audio_del(VncState *vs)
958 {
959 if (vs->audio_cap) {
960 AUD_del_capture(vs->audio_cap, vs);
961 vs->audio_cap = NULL;
962 }
963 }
964
965 static void vnc_disconnect_start(VncState *vs)
966 {
967 if (vs->csock == -1)
968 return;
969 qemu_set_fd_handler2(vs->csock, NULL, NULL, NULL, NULL);
970 closesocket(vs->csock);
971 vs->csock = -1;
972 }
973
974 static void vnc_disconnect_finish(VncState *vs)
975 {
976 int i;
977
978 vnc_jobs_join(vs); /* Wait encoding jobs */
979
980 vnc_lock_output(vs);
981 vnc_qmp_event(vs, QEVENT_VNC_DISCONNECTED);
982
983 buffer_free(&vs->input);
984 buffer_free(&vs->output);
985
986 qobject_decref(vs->info);
987
988 vnc_zlib_clear(vs);
989 vnc_tight_clear(vs);
990 vnc_zrle_clear(vs);
991
992 #ifdef CONFIG_VNC_TLS
993 vnc_tls_client_cleanup(vs);
994 #endif /* CONFIG_VNC_TLS */
995 #ifdef CONFIG_VNC_SASL
996 vnc_sasl_client_cleanup(vs);
997 #endif /* CONFIG_VNC_SASL */
998 audio_del(vs);
999
1000 QTAILQ_REMOVE(&vs->vd->clients, vs, next);
1001
1002 if (QTAILQ_EMPTY(&vs->vd->clients)) {
1003 dcl->idle = 1;
1004 }
1005
1006 qemu_remove_mouse_mode_change_notifier(&vs->mouse_mode_notifier);
1007 vnc_remove_timer(vs->vd);
1008 if (vs->vd->lock_key_sync)
1009 qemu_remove_led_event_handler(vs->led);
1010 vnc_unlock_output(vs);
1011
1012 #ifdef CONFIG_VNC_THREAD
1013 qemu_mutex_destroy(&vs->output_mutex);
1014 #endif
1015 for (i = 0; i < VNC_STAT_ROWS; ++i) {
1016 g_free(vs->lossy_rect[i]);
1017 }
1018 g_free(vs->lossy_rect);
1019 g_free(vs);
1020 }
1021
1022 int vnc_client_io_error(VncState *vs, int ret, int last_errno)
1023 {
1024 if (ret == 0 || ret == -1) {
1025 if (ret == -1) {
1026 switch (last_errno) {
1027 case EINTR:
1028 case EAGAIN:
1029 #ifdef _WIN32
1030 case WSAEWOULDBLOCK:
1031 #endif
1032 return 0;
1033 default:
1034 break;
1035 }
1036 }
1037
1038 VNC_DEBUG("Closing down client sock: ret %d, errno %d\n",
1039 ret, ret < 0 ? last_errno : 0);
1040 vnc_disconnect_start(vs);
1041
1042 return 0;
1043 }
1044 return ret;
1045 }
1046
1047
1048 void vnc_client_error(VncState *vs)
1049 {
1050 VNC_DEBUG("Closing down client sock: protocol error\n");
1051 vnc_disconnect_start(vs);
1052 }
1053
1054
1055 /*
1056 * Called to write a chunk of data to the client socket. The data may
1057 * be the raw data, or may have already been encoded by SASL.
1058 * The data will be written either straight onto the socket, or
1059 * written via the GNUTLS wrappers, if TLS/SSL encryption is enabled
1060 *
1061 * NB, it is theoretically possible to have 2 layers of encryption,
1062 * both SASL, and this TLS layer. It is highly unlikely in practice
1063 * though, since SASL encryption will typically be a no-op if TLS
1064 * is active
1065 *
1066 * Returns the number of bytes written, which may be less than
1067 * the requested 'datalen' if the socket would block. Returns
1068 * -1 on error, and disconnects the client socket.
1069 */
1070 long vnc_client_write_buf(VncState *vs, const uint8_t *data, size_t datalen)
1071 {
1072 long ret;
1073 #ifdef CONFIG_VNC_TLS
1074 if (vs->tls.session) {
1075 ret = gnutls_write(vs->tls.session, data, datalen);
1076 if (ret < 0) {
1077 if (ret == GNUTLS_E_AGAIN)
1078 errno = EAGAIN;
1079 else
1080 errno = EIO;
1081 ret = -1;
1082 }
1083 } else
1084 #endif /* CONFIG_VNC_TLS */
1085 ret = send(vs->csock, (const void *)data, datalen, 0);
1086 VNC_DEBUG("Wrote wire %p %zd -> %ld\n", data, datalen, ret);
1087 return vnc_client_io_error(vs, ret, socket_error());
1088 }
1089
1090
1091 /*
1092 * Called to write buffered data to the client socket, when not
1093 * using any SASL SSF encryption layers. Will write as much data
1094 * as possible without blocking. If all buffered data is written,
1095 * will switch the FD poll() handler back to read monitoring.
1096 *
1097 * Returns the number of bytes written, which may be less than
1098 * the buffered output data if the socket would block. Returns
1099 * -1 on error, and disconnects the client socket.
1100 */
1101 static long vnc_client_write_plain(VncState *vs)
1102 {
1103 long ret;
1104
1105 #ifdef CONFIG_VNC_SASL
1106 VNC_DEBUG("Write Plain: Pending output %p size %zd offset %zd. Wait SSF %d\n",
1107 vs->output.buffer, vs->output.capacity, vs->output.offset,
1108 vs->sasl.waitWriteSSF);
1109
1110 if (vs->sasl.conn &&
1111 vs->sasl.runSSF &&
1112 vs->sasl.waitWriteSSF) {
1113 ret = vnc_client_write_buf(vs, vs->output.buffer, vs->sasl.waitWriteSSF);
1114 if (ret)
1115 vs->sasl.waitWriteSSF -= ret;
1116 } else
1117 #endif /* CONFIG_VNC_SASL */
1118 ret = vnc_client_write_buf(vs, vs->output.buffer, vs->output.offset);
1119 if (!ret)
1120 return 0;
1121
1122 memmove(vs->output.buffer, vs->output.buffer + ret, (vs->output.offset - ret));
1123 vs->output.offset -= ret;
1124
1125 if (vs->output.offset == 0) {
1126 qemu_set_fd_handler2(vs->csock, NULL, vnc_client_read, NULL, vs);
1127 }
1128
1129 return ret;
1130 }
1131
1132
1133 /*
1134 * First function called whenever there is data to be written to
1135 * the client socket. Will delegate actual work according to whether
1136 * SASL SSF layers are enabled (thus requiring encryption calls)
1137 */
1138 static void vnc_client_write_locked(void *opaque)
1139 {
1140 VncState *vs = opaque;
1141
1142 #ifdef CONFIG_VNC_SASL
1143 if (vs->sasl.conn &&
1144 vs->sasl.runSSF &&
1145 !vs->sasl.waitWriteSSF) {
1146 vnc_client_write_sasl(vs);
1147 } else
1148 #endif /* CONFIG_VNC_SASL */
1149 vnc_client_write_plain(vs);
1150 }
1151
1152 void vnc_client_write(void *opaque)
1153 {
1154 VncState *vs = opaque;
1155
1156 vnc_lock_output(vs);
1157 if (vs->output.offset) {
1158 vnc_client_write_locked(opaque);
1159 } else if (vs->csock != -1) {
1160 qemu_set_fd_handler2(vs->csock, NULL, vnc_client_read, NULL, vs);
1161 }
1162 vnc_unlock_output(vs);
1163 }
1164
1165 void vnc_read_when(VncState *vs, VncReadEvent *func, size_t expecting)
1166 {
1167 vs->read_handler = func;
1168 vs->read_handler_expect = expecting;
1169 }
1170
1171
1172 /*
1173 * Called to read a chunk of data from the client socket. The data may
1174 * be the raw data, or may need to be further decoded by SASL.
1175 * The data will be read either straight from to the socket, or
1176 * read via the GNUTLS wrappers, if TLS/SSL encryption is enabled
1177 *
1178 * NB, it is theoretically possible to have 2 layers of encryption,
1179 * both SASL, and this TLS layer. It is highly unlikely in practice
1180 * though, since SASL encryption will typically be a no-op if TLS
1181 * is active
1182 *
1183 * Returns the number of bytes read, which may be less than
1184 * the requested 'datalen' if the socket would block. Returns
1185 * -1 on error, and disconnects the client socket.
1186 */
1187 long vnc_client_read_buf(VncState *vs, uint8_t *data, size_t datalen)
1188 {
1189 long ret;
1190 #ifdef CONFIG_VNC_TLS
1191 if (vs->tls.session) {
1192 ret = gnutls_read(vs->tls.session, data, datalen);
1193 if (ret < 0) {
1194 if (ret == GNUTLS_E_AGAIN)
1195 errno = EAGAIN;
1196 else
1197 errno = EIO;
1198 ret = -1;
1199 }
1200 } else
1201 #endif /* CONFIG_VNC_TLS */
1202 ret = qemu_recv(vs->csock, data, datalen, 0);
1203 VNC_DEBUG("Read wire %p %zd -> %ld\n", data, datalen, ret);
1204 return vnc_client_io_error(vs, ret, socket_error());
1205 }
1206
1207
1208 /*
1209 * Called to read data from the client socket to the input buffer,
1210 * when not using any SASL SSF encryption layers. Will read as much
1211 * data as possible without blocking.
1212 *
1213 * Returns the number of bytes read. Returns -1 on error, and
1214 * disconnects the client socket.
1215 */
1216 static long vnc_client_read_plain(VncState *vs)
1217 {
1218 int ret;
1219 VNC_DEBUG("Read plain %p size %zd offset %zd\n",
1220 vs->input.buffer, vs->input.capacity, vs->input.offset);
1221 buffer_reserve(&vs->input, 4096);
1222 ret = vnc_client_read_buf(vs, buffer_end(&vs->input), 4096);
1223 if (!ret)
1224 return 0;
1225 vs->input.offset += ret;
1226 return ret;
1227 }
1228
1229
1230 /*
1231 * First function called whenever there is more data to be read from
1232 * the client socket. Will delegate actual work according to whether
1233 * SASL SSF layers are enabled (thus requiring decryption calls)
1234 */
1235 void vnc_client_read(void *opaque)
1236 {
1237 VncState *vs = opaque;
1238 long ret;
1239
1240 #ifdef CONFIG_VNC_SASL
1241 if (vs->sasl.conn && vs->sasl.runSSF)
1242 ret = vnc_client_read_sasl(vs);
1243 else
1244 #endif /* CONFIG_VNC_SASL */
1245 ret = vnc_client_read_plain(vs);
1246 if (!ret) {
1247 if (vs->csock == -1)
1248 vnc_disconnect_finish(vs);
1249 return;
1250 }
1251
1252 while (vs->read_handler && vs->input.offset >= vs->read_handler_expect) {
1253 size_t len = vs->read_handler_expect;
1254 int ret;
1255
1256 ret = vs->read_handler(vs, vs->input.buffer, len);
1257 if (vs->csock == -1) {
1258 vnc_disconnect_finish(vs);
1259 return;
1260 }
1261
1262 if (!ret) {
1263 memmove(vs->input.buffer, vs->input.buffer + len, (vs->input.offset - len));
1264 vs->input.offset -= len;
1265 } else {
1266 vs->read_handler_expect = ret;
1267 }
1268 }
1269 }
1270
1271 void vnc_write(VncState *vs, const void *data, size_t len)
1272 {
1273 buffer_reserve(&vs->output, len);
1274
1275 if (vs->csock != -1 && buffer_empty(&vs->output)) {
1276 qemu_set_fd_handler2(vs->csock, NULL, vnc_client_read, vnc_client_write, vs);
1277 }
1278
1279 buffer_append(&vs->output, data, len);
1280 }
1281
1282 void vnc_write_s32(VncState *vs, int32_t value)
1283 {
1284 vnc_write_u32(vs, *(uint32_t *)&value);
1285 }
1286
1287 void vnc_write_u32(VncState *vs, uint32_t value)
1288 {
1289 uint8_t buf[4];
1290
1291 buf[0] = (value >> 24) & 0xFF;
1292 buf[1] = (value >> 16) & 0xFF;
1293 buf[2] = (value >> 8) & 0xFF;
1294 buf[3] = value & 0xFF;
1295
1296 vnc_write(vs, buf, 4);
1297 }
1298
1299 void vnc_write_u16(VncState *vs, uint16_t value)
1300 {
1301 uint8_t buf[2];
1302
1303 buf[0] = (value >> 8) & 0xFF;
1304 buf[1] = value & 0xFF;
1305
1306 vnc_write(vs, buf, 2);
1307 }
1308
1309 void vnc_write_u8(VncState *vs, uint8_t value)
1310 {
1311 vnc_write(vs, (char *)&value, 1);
1312 }
1313
1314 void vnc_flush(VncState *vs)
1315 {
1316 vnc_lock_output(vs);
1317 if (vs->csock != -1 && vs->output.offset) {
1318 vnc_client_write_locked(vs);
1319 }
1320 vnc_unlock_output(vs);
1321 }
1322
1323 uint8_t read_u8(uint8_t *data, size_t offset)
1324 {
1325 return data[offset];
1326 }
1327
1328 uint16_t read_u16(uint8_t *data, size_t offset)
1329 {
1330 return ((data[offset] & 0xFF) << 8) | (data[offset + 1] & 0xFF);
1331 }
1332
1333 int32_t read_s32(uint8_t *data, size_t offset)
1334 {
1335 return (int32_t)((data[offset] << 24) | (data[offset + 1] << 16) |
1336 (data[offset + 2] << 8) | data[offset + 3]);
1337 }
1338
1339 uint32_t read_u32(uint8_t *data, size_t offset)
1340 {
1341 return ((data[offset] << 24) | (data[offset + 1] << 16) |
1342 (data[offset + 2] << 8) | data[offset + 3]);
1343 }
1344
1345 static void client_cut_text(VncState *vs, size_t len, uint8_t *text)
1346 {
1347 }
1348
1349 static void check_pointer_type_change(Notifier *notifier, void *data)
1350 {
1351 VncState *vs = container_of(notifier, VncState, mouse_mode_notifier);
1352 int absolute = kbd_mouse_is_absolute();
1353
1354 if (vnc_has_feature(vs, VNC_FEATURE_POINTER_TYPE_CHANGE) && vs->absolute != absolute) {
1355 vnc_lock_output(vs);
1356 vnc_write_u8(vs, VNC_MSG_SERVER_FRAMEBUFFER_UPDATE);
1357 vnc_write_u8(vs, 0);
1358 vnc_write_u16(vs, 1);
1359 vnc_framebuffer_update(vs, absolute, 0,
1360 ds_get_width(vs->ds), ds_get_height(vs->ds),
1361 VNC_ENCODING_POINTER_TYPE_CHANGE);
1362 vnc_unlock_output(vs);
1363 vnc_flush(vs);
1364 }
1365 vs->absolute = absolute;
1366 }
1367
1368 static void pointer_event(VncState *vs, int button_mask, int x, int y)
1369 {
1370 int buttons = 0;
1371 int dz = 0;
1372
1373 if (button_mask & 0x01)
1374 buttons |= MOUSE_EVENT_LBUTTON;
1375 if (button_mask & 0x02)
1376 buttons |= MOUSE_EVENT_MBUTTON;
1377 if (button_mask & 0x04)
1378 buttons |= MOUSE_EVENT_RBUTTON;
1379 if (button_mask & 0x08)
1380 dz = -1;
1381 if (button_mask & 0x10)
1382 dz = 1;
1383
1384 if (vs->absolute) {
1385 kbd_mouse_event(ds_get_width(vs->ds) > 1 ?
1386 x * 0x7FFF / (ds_get_width(vs->ds) - 1) : 0x4000,
1387 ds_get_height(vs->ds) > 1 ?
1388 y * 0x7FFF / (ds_get_height(vs->ds) - 1) : 0x4000,
1389 dz, buttons);
1390 } else if (vnc_has_feature(vs, VNC_FEATURE_POINTER_TYPE_CHANGE)) {
1391 x -= 0x7FFF;
1392 y -= 0x7FFF;
1393
1394 kbd_mouse_event(x, y, dz, buttons);
1395 } else {
1396 if (vs->last_x != -1)
1397 kbd_mouse_event(x - vs->last_x,
1398 y - vs->last_y,
1399 dz, buttons);
1400 vs->last_x = x;
1401 vs->last_y = y;
1402 }
1403 }
1404
1405 static void reset_keys(VncState *vs)
1406 {
1407 int i;
1408 for(i = 0; i < 256; i++) {
1409 if (vs->modifiers_state[i]) {
1410 if (i & SCANCODE_GREY)
1411 kbd_put_keycode(SCANCODE_EMUL0);
1412 kbd_put_keycode(i | SCANCODE_UP);
1413 vs->modifiers_state[i] = 0;
1414 }
1415 }
1416 }
1417
1418 static void press_key(VncState *vs, int keysym)
1419 {
1420 int keycode = keysym2scancode(vs->vd->kbd_layout, keysym) & SCANCODE_KEYMASK;
1421 if (keycode & SCANCODE_GREY)
1422 kbd_put_keycode(SCANCODE_EMUL0);
1423 kbd_put_keycode(keycode & SCANCODE_KEYCODEMASK);
1424 if (keycode & SCANCODE_GREY)
1425 kbd_put_keycode(SCANCODE_EMUL0);
1426 kbd_put_keycode(keycode | SCANCODE_UP);
1427 }
1428
1429 static void kbd_leds(void *opaque, int ledstate)
1430 {
1431 VncState *vs = opaque;
1432 int caps, num;
1433
1434 caps = ledstate & QEMU_CAPS_LOCK_LED ? 1 : 0;
1435 num = ledstate & QEMU_NUM_LOCK_LED ? 1 : 0;
1436
1437 if (vs->modifiers_state[0x3a] != caps) {
1438 vs->modifiers_state[0x3a] = caps;
1439 }
1440 if (vs->modifiers_state[0x45] != num) {
1441 vs->modifiers_state[0x45] = num;
1442 }
1443 }
1444
1445 static void do_key_event(VncState *vs, int down, int keycode, int sym)
1446 {
1447 /* QEMU console switch */
1448 switch(keycode) {
1449 case 0x2a: /* Left Shift */
1450 case 0x36: /* Right Shift */
1451 case 0x1d: /* Left CTRL */
1452 case 0x9d: /* Right CTRL */
1453 case 0x38: /* Left ALT */
1454 case 0xb8: /* Right ALT */
1455 if (down)
1456 vs->modifiers_state[keycode] = 1;
1457 else
1458 vs->modifiers_state[keycode] = 0;
1459 break;
1460 case 0x02 ... 0x0a: /* '1' to '9' keys */
1461 if (down && vs->modifiers_state[0x1d] && vs->modifiers_state[0x38]) {
1462 /* Reset the modifiers sent to the current console */
1463 reset_keys(vs);
1464 console_select(keycode - 0x02);
1465 return;
1466 }
1467 break;
1468 case 0x3a: /* CapsLock */
1469 case 0x45: /* NumLock */
1470 if (down)
1471 vs->modifiers_state[keycode] ^= 1;
1472 break;
1473 }
1474
1475 if (down && vs->vd->lock_key_sync &&
1476 keycode_is_keypad(vs->vd->kbd_layout, keycode)) {
1477 /* If the numlock state needs to change then simulate an additional
1478 keypress before sending this one. This will happen if the user
1479 toggles numlock away from the VNC window.
1480 */
1481 if (keysym_is_numlock(vs->vd->kbd_layout, sym & 0xFFFF)) {
1482 if (!vs->modifiers_state[0x45]) {
1483 vs->modifiers_state[0x45] = 1;
1484 press_key(vs, 0xff7f);
1485 }
1486 } else {
1487 if (vs->modifiers_state[0x45]) {
1488 vs->modifiers_state[0x45] = 0;
1489 press_key(vs, 0xff7f);
1490 }
1491 }
1492 }
1493
1494 if (down && vs->vd->lock_key_sync &&
1495 ((sym >= 'A' && sym <= 'Z') || (sym >= 'a' && sym <= 'z'))) {
1496 /* If the capslock state needs to change then simulate an additional
1497 keypress before sending this one. This will happen if the user
1498 toggles capslock away from the VNC window.
1499 */
1500 int uppercase = !!(sym >= 'A' && sym <= 'Z');
1501 int shift = !!(vs->modifiers_state[0x2a] | vs->modifiers_state[0x36]);
1502 int capslock = !!(vs->modifiers_state[0x3a]);
1503 if (capslock) {
1504 if (uppercase == shift) {
1505 vs->modifiers_state[0x3a] = 0;
1506 press_key(vs, 0xffe5);
1507 }
1508 } else {
1509 if (uppercase != shift) {
1510 vs->modifiers_state[0x3a] = 1;
1511 press_key(vs, 0xffe5);
1512 }
1513 }
1514 }
1515
1516 if (is_graphic_console()) {
1517 if (keycode & SCANCODE_GREY)
1518 kbd_put_keycode(SCANCODE_EMUL0);
1519 if (down)
1520 kbd_put_keycode(keycode & SCANCODE_KEYCODEMASK);
1521 else
1522 kbd_put_keycode(keycode | SCANCODE_UP);
1523 } else {
1524 /* QEMU console emulation */
1525 if (down) {
1526 int numlock = vs->modifiers_state[0x45];
1527 switch (keycode) {
1528 case 0x2a: /* Left Shift */
1529 case 0x36: /* Right Shift */
1530 case 0x1d: /* Left CTRL */
1531 case 0x9d: /* Right CTRL */
1532 case 0x38: /* Left ALT */
1533 case 0xb8: /* Right ALT */
1534 break;
1535 case 0xc8:
1536 kbd_put_keysym(QEMU_KEY_UP);
1537 break;
1538 case 0xd0:
1539 kbd_put_keysym(QEMU_KEY_DOWN);
1540 break;
1541 case 0xcb:
1542 kbd_put_keysym(QEMU_KEY_LEFT);
1543 break;
1544 case 0xcd:
1545 kbd_put_keysym(QEMU_KEY_RIGHT);
1546 break;
1547 case 0xd3:
1548 kbd_put_keysym(QEMU_KEY_DELETE);
1549 break;
1550 case 0xc7:
1551 kbd_put_keysym(QEMU_KEY_HOME);
1552 break;
1553 case 0xcf:
1554 kbd_put_keysym(QEMU_KEY_END);
1555 break;
1556 case 0xc9:
1557 kbd_put_keysym(QEMU_KEY_PAGEUP);
1558 break;
1559 case 0xd1:
1560 kbd_put_keysym(QEMU_KEY_PAGEDOWN);
1561 break;
1562
1563 case 0x47:
1564 kbd_put_keysym(numlock ? '7' : QEMU_KEY_HOME);
1565 break;
1566 case 0x48:
1567 kbd_put_keysym(numlock ? '8' : QEMU_KEY_UP);
1568 break;
1569 case 0x49:
1570 kbd_put_keysym(numlock ? '9' : QEMU_KEY_PAGEUP);
1571 break;
1572 case 0x4b:
1573 kbd_put_keysym(numlock ? '4' : QEMU_KEY_LEFT);
1574 break;
1575 case 0x4c:
1576 kbd_put_keysym('5');
1577 break;
1578 case 0x4d:
1579 kbd_put_keysym(numlock ? '6' : QEMU_KEY_RIGHT);
1580 break;
1581 case 0x4f:
1582 kbd_put_keysym(numlock ? '1' : QEMU_KEY_END);
1583 break;
1584 case 0x50:
1585 kbd_put_keysym(numlock ? '2' : QEMU_KEY_DOWN);
1586 break;
1587 case 0x51:
1588 kbd_put_keysym(numlock ? '3' : QEMU_KEY_PAGEDOWN);
1589 break;
1590 case 0x52:
1591 kbd_put_keysym('0');
1592 break;
1593 case 0x53:
1594 kbd_put_keysym(numlock ? '.' : QEMU_KEY_DELETE);
1595 break;
1596
1597 case 0xb5:
1598 kbd_put_keysym('/');
1599 break;
1600 case 0x37:
1601 kbd_put_keysym('*');
1602 break;
1603 case 0x4a:
1604 kbd_put_keysym('-');
1605 break;
1606 case 0x4e:
1607 kbd_put_keysym('+');
1608 break;
1609 case 0x9c:
1610 kbd_put_keysym('\n');
1611 break;
1612
1613 default:
1614 kbd_put_keysym(sym);
1615 break;
1616 }
1617 }
1618 }
1619 }
1620
1621 static void key_event(VncState *vs, int down, uint32_t sym)
1622 {
1623 int keycode;
1624 int lsym = sym;
1625
1626 if (lsym >= 'A' && lsym <= 'Z' && is_graphic_console()) {
1627 lsym = lsym - 'A' + 'a';
1628 }
1629
1630 keycode = keysym2scancode(vs->vd->kbd_layout, lsym & 0xFFFF) & SCANCODE_KEYMASK;
1631 do_key_event(vs, down, keycode, sym);
1632 }
1633
1634 static void ext_key_event(VncState *vs, int down,
1635 uint32_t sym, uint16_t keycode)
1636 {
1637 /* if the user specifies a keyboard layout, always use it */
1638 if (keyboard_layout)
1639 key_event(vs, down, sym);
1640 else
1641 do_key_event(vs, down, keycode, sym);
1642 }
1643
1644 static void framebuffer_update_request(VncState *vs, int incremental,
1645 int x_position, int y_position,
1646 int w, int h)
1647 {
1648 int i;
1649 const size_t width = ds_get_width(vs->ds) / 16;
1650
1651 if (y_position > ds_get_height(vs->ds))
1652 y_position = ds_get_height(vs->ds);
1653 if (y_position + h >= ds_get_height(vs->ds))
1654 h = ds_get_height(vs->ds) - y_position;
1655
1656 vs->need_update = 1;
1657 if (!incremental) {
1658 vs->force_update = 1;
1659 for (i = 0; i < h; i++) {
1660 bitmap_set(vs->dirty[y_position + i], 0, width);
1661 bitmap_clear(vs->dirty[y_position + i], width,
1662 VNC_DIRTY_BITS - width);
1663 }
1664 }
1665 }
1666
1667 static void send_ext_key_event_ack(VncState *vs)
1668 {
1669 vnc_lock_output(vs);
1670 vnc_write_u8(vs, VNC_MSG_SERVER_FRAMEBUFFER_UPDATE);
1671 vnc_write_u8(vs, 0);
1672 vnc_write_u16(vs, 1);
1673 vnc_framebuffer_update(vs, 0, 0, ds_get_width(vs->ds), ds_get_height(vs->ds),
1674 VNC_ENCODING_EXT_KEY_EVENT);
1675 vnc_unlock_output(vs);
1676 vnc_flush(vs);
1677 }
1678
1679 static void send_ext_audio_ack(VncState *vs)
1680 {
1681 vnc_lock_output(vs);
1682 vnc_write_u8(vs, VNC_MSG_SERVER_FRAMEBUFFER_UPDATE);
1683 vnc_write_u8(vs, 0);
1684 vnc_write_u16(vs, 1);
1685 vnc_framebuffer_update(vs, 0, 0, ds_get_width(vs->ds), ds_get_height(vs->ds),
1686 VNC_ENCODING_AUDIO);
1687 vnc_unlock_output(vs);
1688 vnc_flush(vs);
1689 }
1690
1691 static void set_encodings(VncState *vs, int32_t *encodings, size_t n_encodings)
1692 {
1693 int i;
1694 unsigned int enc = 0;
1695
1696 vs->features = 0;
1697 vs->vnc_encoding = 0;
1698 vs->tight.compression = 9;
1699 vs->tight.quality = -1; /* Lossless by default */
1700 vs->absolute = -1;
1701
1702 /*
1703 * Start from the end because the encodings are sent in order of preference.
1704 * This way the prefered encoding (first encoding defined in the array)
1705 * will be set at the end of the loop.
1706 */
1707 for (i = n_encodings - 1; i >= 0; i--) {
1708 enc = encodings[i];
1709 switch (enc) {
1710 case VNC_ENCODING_RAW:
1711 vs->vnc_encoding = enc;
1712 break;
1713 case VNC_ENCODING_COPYRECT:
1714 vs->features |= VNC_FEATURE_COPYRECT_MASK;
1715 break;
1716 case VNC_ENCODING_HEXTILE:
1717 vs->features |= VNC_FEATURE_HEXTILE_MASK;
1718 vs->vnc_encoding = enc;
1719 break;
1720 case VNC_ENCODING_TIGHT:
1721 vs->features |= VNC_FEATURE_TIGHT_MASK;
1722 vs->vnc_encoding = enc;
1723 break;
1724 case VNC_ENCODING_TIGHT_PNG:
1725 vs->features |= VNC_FEATURE_TIGHT_PNG_MASK;
1726 vs->vnc_encoding = enc;
1727 break;
1728 case VNC_ENCODING_ZLIB:
1729 vs->features |= VNC_FEATURE_ZLIB_MASK;
1730 vs->vnc_encoding = enc;
1731 break;
1732 case VNC_ENCODING_ZRLE:
1733 vs->features |= VNC_FEATURE_ZRLE_MASK;
1734 vs->vnc_encoding = enc;
1735 break;
1736 case VNC_ENCODING_ZYWRLE:
1737 vs->features |= VNC_FEATURE_ZYWRLE_MASK;
1738 vs->vnc_encoding = enc;
1739 break;
1740 case VNC_ENCODING_DESKTOPRESIZE:
1741 vs->features |= VNC_FEATURE_RESIZE_MASK;
1742 break;
1743 case VNC_ENCODING_POINTER_TYPE_CHANGE:
1744 vs->features |= VNC_FEATURE_POINTER_TYPE_CHANGE_MASK;
1745 break;
1746 case VNC_ENCODING_RICH_CURSOR:
1747 vs->features |= VNC_FEATURE_RICH_CURSOR_MASK;
1748 break;
1749 case VNC_ENCODING_EXT_KEY_EVENT:
1750 send_ext_key_event_ack(vs);
1751 break;
1752 case VNC_ENCODING_AUDIO:
1753 send_ext_audio_ack(vs);
1754 break;
1755 case VNC_ENCODING_WMVi:
1756 vs->features |= VNC_FEATURE_WMVI_MASK;
1757 break;
1758 case VNC_ENCODING_COMPRESSLEVEL0 ... VNC_ENCODING_COMPRESSLEVEL0 + 9:
1759 vs->tight.compression = (enc & 0x0F);
1760 break;
1761 case VNC_ENCODING_QUALITYLEVEL0 ... VNC_ENCODING_QUALITYLEVEL0 + 9:
1762 if (vs->vd->lossy) {
1763 vs->tight.quality = (enc & 0x0F);
1764 }
1765 break;
1766 default:
1767 VNC_DEBUG("Unknown encoding: %d (0x%.8x): %d\n", i, enc, enc);
1768 break;
1769 }
1770 }
1771 vnc_desktop_resize(vs);
1772 check_pointer_type_change(&vs->mouse_mode_notifier, NULL);
1773 }
1774
1775 static void set_pixel_conversion(VncState *vs)
1776 {
1777 if ((vs->clientds.flags & QEMU_BIG_ENDIAN_FLAG) ==
1778 (vs->ds->surface->flags & QEMU_BIG_ENDIAN_FLAG) &&
1779 !memcmp(&(vs->clientds.pf), &(vs->ds->surface->pf), sizeof(PixelFormat))) {
1780 vs->write_pixels = vnc_write_pixels_copy;
1781 vnc_hextile_set_pixel_conversion(vs, 0);
1782 } else {
1783 vs->write_pixels = vnc_write_pixels_generic;
1784 vnc_hextile_set_pixel_conversion(vs, 1);
1785 }
1786 }
1787
1788 static void set_pixel_format(VncState *vs,
1789 int bits_per_pixel, int depth,
1790 int big_endian_flag, int true_color_flag,
1791 int red_max, int green_max, int blue_max,
1792 int red_shift, int green_shift, int blue_shift)
1793 {
1794 if (!true_color_flag) {
1795 vnc_client_error(vs);
1796 return;
1797 }
1798
1799 vs->clientds = *(vs->vd->guest.ds);
1800 vs->clientds.pf.rmax = red_max;
1801 vs->clientds.pf.rbits = hweight_long(red_max);
1802 vs->clientds.pf.rshift = red_shift;
1803 vs->clientds.pf.rmask = red_max << red_shift;
1804 vs->clientds.pf.gmax = green_max;
1805 vs->clientds.pf.gbits = hweight_long(green_max);
1806 vs->clientds.pf.gshift = green_shift;
1807 vs->clientds.pf.gmask = green_max << green_shift;
1808 vs->clientds.pf.bmax = blue_max;
1809 vs->clientds.pf.bbits = hweight_long(blue_max);
1810 vs->clientds.pf.bshift = blue_shift;
1811 vs->clientds.pf.bmask = blue_max << blue_shift;
1812 vs->clientds.pf.bits_per_pixel = bits_per_pixel;
1813 vs->clientds.pf.bytes_per_pixel = bits_per_pixel / 8;
1814 vs->clientds.pf.depth = bits_per_pixel == 32 ? 24 : bits_per_pixel;
1815 vs->clientds.flags = big_endian_flag ? QEMU_BIG_ENDIAN_FLAG : 0x00;
1816
1817 set_pixel_conversion(vs);
1818
1819 vga_hw_invalidate();
1820 vga_hw_update();
1821 }
1822
1823 static void pixel_format_message (VncState *vs) {
1824 char pad[3] = { 0, 0, 0 };
1825
1826 vnc_write_u8(vs, vs->ds->surface->pf.bits_per_pixel); /* bits-per-pixel */
1827 vnc_write_u8(vs, vs->ds->surface->pf.depth); /* depth */
1828
1829 #ifdef HOST_WORDS_BIGENDIAN
1830 vnc_write_u8(vs, 1); /* big-endian-flag */
1831 #else
1832 vnc_write_u8(vs, 0); /* big-endian-flag */
1833 #endif
1834 vnc_write_u8(vs, 1); /* true-color-flag */
1835 vnc_write_u16(vs, vs->ds->surface->pf.rmax); /* red-max */
1836 vnc_write_u16(vs, vs->ds->surface->pf.gmax); /* green-max */
1837 vnc_write_u16(vs, vs->ds->surface->pf.bmax); /* blue-max */
1838 vnc_write_u8(vs, vs->ds->surface->pf.rshift); /* red-shift */
1839 vnc_write_u8(vs, vs->ds->surface->pf.gshift); /* green-shift */
1840 vnc_write_u8(vs, vs->ds->surface->pf.bshift); /* blue-shift */
1841
1842 vnc_hextile_set_pixel_conversion(vs, 0);
1843
1844 vs->clientds = *(vs->ds->surface);
1845 vs->clientds.flags &= ~QEMU_ALLOCATED_FLAG;
1846 vs->write_pixels = vnc_write_pixels_copy;
1847
1848 vnc_write(vs, pad, 3); /* padding */
1849 }
1850
1851 static void vnc_dpy_setdata(DisplayState *ds)
1852 {
1853 /* We don't have to do anything */
1854 }
1855
1856 static void vnc_colordepth(VncState *vs)
1857 {
1858 if (vnc_has_feature(vs, VNC_FEATURE_WMVI)) {
1859 /* Sending a WMVi message to notify the client*/
1860 vnc_lock_output(vs);
1861 vnc_write_u8(vs, VNC_MSG_SERVER_FRAMEBUFFER_UPDATE);
1862 vnc_write_u8(vs, 0);
1863 vnc_write_u16(vs, 1); /* number of rects */
1864 vnc_framebuffer_update(vs, 0, 0, ds_get_width(vs->ds),
1865 ds_get_height(vs->ds), VNC_ENCODING_WMVi);
1866 pixel_format_message(vs);
1867 vnc_unlock_output(vs);
1868 vnc_flush(vs);
1869 } else {
1870 set_pixel_conversion(vs);
1871 }
1872 }
1873
1874 static int protocol_client_msg(VncState *vs, uint8_t *data, size_t len)
1875 {
1876 int i;
1877 uint16_t limit;
1878 VncDisplay *vd = vs->vd;
1879
1880 if (data[0] > 3) {
1881 vd->timer_interval = VNC_REFRESH_INTERVAL_BASE;
1882 if (!qemu_timer_expired(vd->timer, qemu_get_clock_ms(rt_clock) + vd->timer_interval))
1883 qemu_mod_timer(vd->timer, qemu_get_clock_ms(rt_clock) + vd->timer_interval);
1884 }
1885
1886 switch (data[0]) {
1887 case VNC_MSG_CLIENT_SET_PIXEL_FORMAT:
1888 if (len == 1)
1889 return 20;
1890
1891 set_pixel_format(vs, read_u8(data, 4), read_u8(data, 5),
1892 read_u8(data, 6), read_u8(data, 7),
1893 read_u16(data, 8), read_u16(data, 10),
1894 read_u16(data, 12), read_u8(data, 14),
1895 read_u8(data, 15), read_u8(data, 16));
1896 break;
1897 case VNC_MSG_CLIENT_SET_ENCODINGS:
1898 if (len == 1)
1899 return 4;
1900
1901 if (len == 4) {
1902 limit = read_u16(data, 2);
1903 if (limit > 0)
1904 return 4 + (limit * 4);
1905 } else
1906 limit = read_u16(data, 2);
1907
1908 for (i = 0; i < limit; i++) {
1909 int32_t val = read_s32(data, 4 + (i * 4));
1910 memcpy(data + 4 + (i * 4), &val, sizeof(val));
1911 }
1912
1913 set_encodings(vs, (int32_t *)(data + 4), limit);
1914 break;
1915 case VNC_MSG_CLIENT_FRAMEBUFFER_UPDATE_REQUEST:
1916 if (len == 1)
1917 return 10;
1918
1919 framebuffer_update_request(vs,
1920 read_u8(data, 1), read_u16(data, 2), read_u16(data, 4),
1921 read_u16(data, 6), read_u16(data, 8));
1922 break;
1923 case VNC_MSG_CLIENT_KEY_EVENT:
1924 if (len == 1)
1925 return 8;
1926
1927 key_event(vs, read_u8(data, 1), read_u32(data, 4));
1928 break;
1929 case VNC_MSG_CLIENT_POINTER_EVENT:
1930 if (len == 1)
1931 return 6;
1932
1933 pointer_event(vs, read_u8(data, 1), read_u16(data, 2), read_u16(data, 4));
1934 break;
1935 case VNC_MSG_CLIENT_CUT_TEXT:
1936 if (len == 1)
1937 return 8;
1938
1939 if (len == 8) {
1940 uint32_t dlen = read_u32(data, 4);
1941 if (dlen > 0)
1942 return 8 + dlen;
1943 }
1944
1945 client_cut_text(vs, read_u32(data, 4), data + 8);
1946 break;
1947 case VNC_MSG_CLIENT_QEMU:
1948 if (len == 1)
1949 return 2;
1950
1951 switch (read_u8(data, 1)) {
1952 case VNC_MSG_CLIENT_QEMU_EXT_KEY_EVENT:
1953 if (len == 2)
1954 return 12;
1955
1956 ext_key_event(vs, read_u16(data, 2),
1957 read_u32(data, 4), read_u32(data, 8));
1958 break;
1959 case VNC_MSG_CLIENT_QEMU_AUDIO:
1960 if (len == 2)
1961 return 4;
1962
1963 switch (read_u16 (data, 2)) {
1964 case VNC_MSG_CLIENT_QEMU_AUDIO_ENABLE:
1965 audio_add(vs);
1966 break;
1967 case VNC_MSG_CLIENT_QEMU_AUDIO_DISABLE:
1968 audio_del(vs);
1969 break;
1970 case VNC_MSG_CLIENT_QEMU_AUDIO_SET_FORMAT:
1971 if (len == 4)
1972 return 10;
1973 switch (read_u8(data, 4)) {
1974 case 0: vs->as.fmt = AUD_FMT_U8; break;
1975 case 1: vs->as.fmt = AUD_FMT_S8; break;
1976 case 2: vs->as.fmt = AUD_FMT_U16; break;
1977 case 3: vs->as.fmt = AUD_FMT_S16; break;
1978 case 4: vs->as.fmt = AUD_FMT_U32; break;
1979 case 5: vs->as.fmt = AUD_FMT_S32; break;
1980 default:
1981 printf("Invalid audio format %d\n", read_u8(data, 4));
1982 vnc_client_error(vs);
1983 break;
1984 }
1985 vs->as.nchannels = read_u8(data, 5);
1986 if (vs->as.nchannels != 1 && vs->as.nchannels != 2) {
1987 printf("Invalid audio channel coount %d\n",
1988 read_u8(data, 5));
1989 vnc_client_error(vs);
1990 break;
1991 }
1992 vs->as.freq = read_u32(data, 6);
1993 break;
1994 default:
1995 printf ("Invalid audio message %d\n", read_u8(data, 4));
1996 vnc_client_error(vs);
1997 break;
1998 }
1999 break;
2000
2001 default:
2002 printf("Msg: %d\n", read_u16(data, 0));
2003 vnc_client_error(vs);
2004 break;
2005 }
2006 break;
2007 default:
2008 printf("Msg: %d\n", data[0]);
2009 vnc_client_error(vs);
2010 break;
2011 }
2012
2013 vnc_read_when(vs, protocol_client_msg, 1);
2014 return 0;
2015 }
2016
2017 static int protocol_client_init(VncState *vs, uint8_t *data, size_t len)
2018 {
2019 char buf[1024];
2020 int size;
2021
2022 vs->client_width = ds_get_width(vs->ds);
2023 vs->client_height = ds_get_height(vs->ds);
2024 vnc_write_u16(vs, vs->client_width);
2025 vnc_write_u16(vs, vs->client_height);
2026
2027 pixel_format_message(vs);
2028
2029 if (qemu_name)
2030 size = snprintf(buf, sizeof(buf), "QEMU (%s)", qemu_name);
2031 else
2032 size = snprintf(buf, sizeof(buf), "QEMU");
2033
2034 vnc_write_u32(vs, size);
2035 vnc_write(vs, buf, size);
2036 vnc_flush(vs);
2037
2038 vnc_client_cache_auth(vs);
2039 vnc_qmp_event(vs, QEVENT_VNC_INITIALIZED);
2040
2041 vnc_read_when(vs, protocol_client_msg, 1);
2042
2043 return 0;
2044 }
2045
2046 void start_client_init(VncState *vs)
2047 {
2048 vnc_read_when(vs, protocol_client_init, 1);
2049 }
2050
2051 static void make_challenge(VncState *vs)
2052 {
2053 int i;
2054
2055 srand(time(NULL)+getpid()+getpid()*987654+rand());
2056
2057 for (i = 0 ; i < sizeof(vs->challenge) ; i++)
2058 vs->challenge[i] = (int) (256.0*rand()/(RAND_MAX+1.0));
2059 }
2060
2061 static int protocol_client_auth_vnc(VncState *vs, uint8_t *data, size_t len)
2062 {
2063 unsigned char response[VNC_AUTH_CHALLENGE_SIZE];
2064 int i, j, pwlen;
2065 unsigned char key[8];
2066 time_t now = time(NULL);
2067
2068 if (!vs->vd->password) {
2069 VNC_DEBUG("No password configured on server");
2070 goto reject;
2071 }
2072 if (vs->vd->expires < now) {
2073 VNC_DEBUG("Password is expired");
2074 goto reject;
2075 }
2076
2077 memcpy(response, vs->challenge, VNC_AUTH_CHALLENGE_SIZE);
2078
2079 /* Calculate the expected challenge response */
2080 pwlen = strlen(vs->vd->password);
2081 for (i=0; i<sizeof(key); i++)
2082 key[i] = i<pwlen ? vs->vd->password[i] : 0;
2083 deskey(key, EN0);
2084 for (j = 0; j < VNC_AUTH_CHALLENGE_SIZE; j += 8)
2085 des(response+j, response+j);
2086
2087 /* Compare expected vs actual challenge response */
2088 if (memcmp(response, data, VNC_AUTH_CHALLENGE_SIZE) != 0) {
2089 VNC_DEBUG("Client challenge reponse did not match\n");
2090 goto reject;
2091 } else {
2092 VNC_DEBUG("Accepting VNC challenge response\n");
2093 vnc_write_u32(vs, 0); /* Accept auth */
2094 vnc_flush(vs);
2095
2096 start_client_init(vs);
2097 }
2098 return 0;
2099
2100 reject:
2101 vnc_write_u32(vs, 1); /* Reject auth */
2102 if (vs->minor >= 8) {
2103 static const char err[] = "Authentication failed";
2104 vnc_write_u32(vs, sizeof(err));
2105 vnc_write(vs, err, sizeof(err));
2106 }
2107 vnc_flush(vs);
2108 vnc_client_error(vs);
2109 return 0;
2110 }
2111
2112 void start_auth_vnc(VncState *vs)
2113 {
2114 make_challenge(vs);
2115 /* Send client a 'random' challenge */
2116 vnc_write(vs, vs->challenge, sizeof(vs->challenge));
2117 vnc_flush(vs);
2118
2119 vnc_read_when(vs, protocol_client_auth_vnc, sizeof(vs->challenge));
2120 }
2121
2122
2123 static int protocol_client_auth(VncState *vs, uint8_t *data, size_t len)
2124 {
2125 /* We only advertise 1 auth scheme at a time, so client
2126 * must pick the one we sent. Verify this */
2127 if (data[0] != vs->auth) { /* Reject auth */
2128 VNC_DEBUG("Reject auth %d because it didn't match advertized\n", (int)data[0]);
2129 vnc_write_u32(vs, 1);
2130 if (vs->minor >= 8) {
2131 static const char err[] = "Authentication failed";
2132 vnc_write_u32(vs, sizeof(err));
2133 vnc_write(vs, err, sizeof(err));
2134 }
2135 vnc_client_error(vs);
2136 } else { /* Accept requested auth */
2137 VNC_DEBUG("Client requested auth %d\n", (int)data[0]);
2138 switch (vs->auth) {
2139 case VNC_AUTH_NONE:
2140 VNC_DEBUG("Accept auth none\n");
2141 if (vs->minor >= 8) {
2142 vnc_write_u32(vs, 0); /* Accept auth completion */
2143 vnc_flush(vs);
2144 }
2145 start_client_init(vs);
2146 break;
2147
2148 case VNC_AUTH_VNC:
2149 VNC_DEBUG("Start VNC auth\n");
2150 start_auth_vnc(vs);
2151 break;
2152
2153 #ifdef CONFIG_VNC_TLS
2154 case VNC_AUTH_VENCRYPT:
2155 VNC_DEBUG("Accept VeNCrypt auth\n");;
2156 start_auth_vencrypt(vs);
2157 break;
2158 #endif /* CONFIG_VNC_TLS */
2159
2160 #ifdef CONFIG_VNC_SASL
2161 case VNC_AUTH_SASL:
2162 VNC_DEBUG("Accept SASL auth\n");
2163 start_auth_sasl(vs);
2164 break;
2165 #endif /* CONFIG_VNC_SASL */
2166
2167 default: /* Should not be possible, but just in case */
2168 VNC_DEBUG("Reject auth %d server code bug\n", vs->auth);
2169 vnc_write_u8(vs, 1);
2170 if (vs->minor >= 8) {
2171 static const char err[] = "Authentication failed";
2172 vnc_write_u32(vs, sizeof(err));
2173 vnc_write(vs, err, sizeof(err));
2174 }
2175 vnc_client_error(vs);
2176 }
2177 }
2178 return 0;
2179 }
2180
2181 static int protocol_version(VncState *vs, uint8_t *version, size_t len)
2182 {
2183 char local[13];
2184
2185 memcpy(local, version, 12);
2186 local[12] = 0;
2187
2188 if (sscanf(local, "RFB %03d.%03d\n", &vs->major, &vs->minor) != 2) {
2189 VNC_DEBUG("Malformed protocol version %s\n", local);
2190 vnc_client_error(vs);
2191 return 0;
2192 }
2193 VNC_DEBUG("Client request protocol version %d.%d\n", vs->major, vs->minor);
2194 if (vs->major != 3 ||
2195 (vs->minor != 3 &&
2196 vs->minor != 4 &&
2197 vs->minor != 5 &&
2198 vs->minor != 7 &&
2199 vs->minor != 8)) {
2200 VNC_DEBUG("Unsupported client version\n");
2201 vnc_write_u32(vs, VNC_AUTH_INVALID);
2202 vnc_flush(vs);
2203 vnc_client_error(vs);
2204 return 0;
2205 }
2206 /* Some broken clients report v3.4 or v3.5, which spec requires to be treated
2207 * as equivalent to v3.3 by servers
2208 */
2209 if (vs->minor == 4 || vs->minor == 5)
2210 vs->minor = 3;
2211
2212 if (vs->minor == 3) {
2213 if (vs->auth == VNC_AUTH_NONE) {
2214 VNC_DEBUG("Tell client auth none\n");
2215 vnc_write_u32(vs, vs->auth);
2216 vnc_flush(vs);
2217 start_client_init(vs);
2218 } else if (vs->auth == VNC_AUTH_VNC) {
2219 VNC_DEBUG("Tell client VNC auth\n");
2220 vnc_write_u32(vs, vs->auth);
2221 vnc_flush(vs);
2222 start_auth_vnc(vs);
2223 } else {
2224 VNC_DEBUG("Unsupported auth %d for protocol 3.3\n", vs->auth);
2225 vnc_write_u32(vs, VNC_AUTH_INVALID);
2226 vnc_flush(vs);
2227 vnc_client_error(vs);
2228 }
2229 } else {
2230 VNC_DEBUG("Telling client we support auth %d\n", vs->auth);
2231 vnc_write_u8(vs, 1); /* num auth */
2232 vnc_write_u8(vs, vs->auth);
2233 vnc_read_when(vs, protocol_client_auth, 1);
2234 vnc_flush(vs);
2235 }
2236
2237 return 0;
2238 }
2239
2240 static VncRectStat *vnc_stat_rect(VncDisplay *vd, int x, int y)
2241 {
2242 struct VncSurface *vs = &vd->guest;
2243
2244 return &vs->stats[y / VNC_STAT_RECT][x / VNC_STAT_RECT];
2245 }
2246
2247 void vnc_sent_lossy_rect(VncState *vs, int x, int y, int w, int h)
2248 {
2249 int i, j;
2250
2251 w = (x + w) / VNC_STAT_RECT;
2252 h = (y + h) / VNC_STAT_RECT;
2253 x /= VNC_STAT_RECT;
2254 y /= VNC_STAT_RECT;
2255
2256 for (j = y; j <= h; j++) {
2257 for (i = x; i <= w; i++) {
2258 vs->lossy_rect[j][i] = 1;
2259 }
2260 }
2261 }
2262
2263 static int vnc_refresh_lossy_rect(VncDisplay *vd, int x, int y)
2264 {
2265 VncState *vs;
2266 int sty = y / VNC_STAT_RECT;
2267 int stx = x / VNC_STAT_RECT;
2268 int has_dirty = 0;
2269
2270 y = y / VNC_STAT_RECT * VNC_STAT_RECT;
2271 x = x / VNC_STAT_RECT * VNC_STAT_RECT;
2272
2273 QTAILQ_FOREACH(vs, &vd->clients, next) {
2274 int j;
2275
2276 /* kernel send buffers are full -> refresh later */
2277 if (vs->output.offset) {
2278 continue;
2279 }
2280
2281 if (!vs->lossy_rect[sty][stx]) {
2282 continue;
2283 }
2284
2285 vs->lossy_rect[sty][stx] = 0;
2286 for (j = 0; j < VNC_STAT_RECT; ++j) {
2287 bitmap_set(vs->dirty[y + j], x / 16, VNC_STAT_RECT / 16);
2288 }
2289 has_dirty++;
2290 }
2291
2292 return has_dirty;
2293 }
2294
2295 static int vnc_update_stats(VncDisplay *vd, struct timeval * tv)
2296 {
2297 int x, y;
2298 struct timeval res;
2299 int has_dirty = 0;
2300
2301 for (y = 0; y < vd->guest.ds->height; y += VNC_STAT_RECT) {
2302 for (x = 0; x < vd->guest.ds->width; x += VNC_STAT_RECT) {
2303 VncRectStat *rect = vnc_stat_rect(vd, x, y);
2304
2305 rect->updated = false;
2306 }
2307 }
2308
2309 qemu_timersub(tv, &VNC_REFRESH_STATS, &res);
2310
2311 if (timercmp(&vd->guest.last_freq_check, &res, >)) {
2312 return has_dirty;
2313 }
2314 vd->guest.last_freq_check = *tv;
2315
2316 for (y = 0; y < vd->guest.ds->height; y += VNC_STAT_RECT) {
2317 for (x = 0; x < vd->guest.ds->width; x += VNC_STAT_RECT) {
2318 VncRectStat *rect= vnc_stat_rect(vd, x, y);
2319 int count = ARRAY_SIZE(rect->times);
2320 struct timeval min, max;
2321
2322 if (!timerisset(&rect->times[count - 1])) {
2323 continue ;
2324 }
2325
2326 max = rect->times[(rect->idx + count - 1) % count];
2327 qemu_timersub(tv, &max, &res);
2328
2329 if (timercmp(&res, &VNC_REFRESH_LOSSY, >)) {
2330 rect->freq = 0;
2331 has_dirty += vnc_refresh_lossy_rect(vd, x, y);
2332 memset(rect->times, 0, sizeof (rect->times));
2333 continue ;
2334 }
2335
2336 min = rect->times[rect->idx];
2337 max = rect->times[(rect->idx + count - 1) % count];
2338 qemu_timersub(&max, &min, &res);
2339
2340 rect->freq = res.tv_sec + res.tv_usec / 1000000.;
2341 rect->freq /= count;
2342 rect->freq = 1. / rect->freq;
2343 }
2344 }
2345 return has_dirty;
2346 }
2347
2348 double vnc_update_freq(VncState *vs, int x, int y, int w, int h)
2349 {
2350 int i, j;
2351 double total = 0;
2352 int num = 0;
2353
2354 x = (x / VNC_STAT_RECT) * VNC_STAT_RECT;
2355 y = (y / VNC_STAT_RECT) * VNC_STAT_RECT;
2356
2357 for (j = y; j <= y + h; j += VNC_STAT_RECT) {
2358 for (i = x; i <= x + w; i += VNC_STAT_RECT) {
2359 total += vnc_stat_rect(vs->vd, i, j)->freq;
2360 num++;
2361 }
2362 }
2363
2364 if (num) {
2365 return total / num;
2366 } else {
2367 return 0;
2368 }
2369 }
2370
2371 static void vnc_rect_updated(VncDisplay *vd, int x, int y, struct timeval * tv)
2372 {
2373 VncRectStat *rect;
2374
2375 rect = vnc_stat_rect(vd, x, y);
2376 if (rect->updated) {
2377 return ;
2378 }
2379 rect->times[rect->idx] = *tv;
2380 rect->idx = (rect->idx + 1) % ARRAY_SIZE(rect->times);
2381 rect->updated = true;
2382 }
2383
2384 static int vnc_refresh_server_surface(VncDisplay *vd)
2385 {
2386 int y;
2387 uint8_t *guest_row;
2388 uint8_t *server_row;
2389 int cmp_bytes;
2390 VncState *vs;
2391 int has_dirty = 0;
2392
2393 struct timeval tv = { 0, 0 };
2394
2395 if (!vd->non_adaptive) {
2396 gettimeofday(&tv, NULL);
2397 has_dirty = vnc_update_stats(vd, &tv);
2398 }
2399
2400 /*
2401 * Walk through the guest dirty map.
2402 * Check and copy modified bits from guest to server surface.
2403 * Update server dirty map.
2404 */
2405 cmp_bytes = 16 * ds_get_bytes_per_pixel(vd->ds);
2406 guest_row = vd->guest.ds->data;
2407 server_row = vd->server->data;
2408 for (y = 0; y < vd->guest.ds->height; y++) {
2409 if (!bitmap_empty(vd->guest.dirty[y], VNC_DIRTY_BITS)) {
2410 int x;
2411 uint8_t *guest_ptr;
2412 uint8_t *server_ptr;
2413
2414 guest_ptr = guest_row;
2415 server_ptr = server_row;
2416
2417 for (x = 0; x < vd->guest.ds->width;
2418 x += 16, guest_ptr += cmp_bytes, server_ptr += cmp_bytes) {
2419 if (!test_and_clear_bit((x / 16), vd->guest.dirty[y]))
2420 continue;
2421 if (memcmp(server_ptr, guest_ptr, cmp_bytes) == 0)
2422 continue;
2423 memcpy(server_ptr, guest_ptr, cmp_bytes);
2424 if (!vd->non_adaptive)
2425 vnc_rect_updated(vd, x, y, &tv);
2426 QTAILQ_FOREACH(vs, &vd->clients, next) {
2427 set_bit((x / 16), vs->dirty[y]);
2428 }
2429 has_dirty++;
2430 }
2431 }
2432 guest_row += ds_get_linesize(vd->ds);
2433 server_row += ds_get_linesize(vd->ds);
2434 }
2435 return has_dirty;
2436 }
2437
2438 static void vnc_refresh(void *opaque)
2439 {
2440 VncDisplay *vd = opaque;
2441 VncState *vs, *vn;
2442 int has_dirty, rects = 0;
2443
2444 vga_hw_update();
2445
2446 if (vnc_trylock_display(vd)) {
2447 vd->timer_interval = VNC_REFRESH_INTERVAL_BASE;
2448 qemu_mod_timer(vd->timer, qemu_get_clock_ms(rt_clock) +
2449 vd->timer_interval);
2450 return;
2451 }
2452
2453 has_dirty = vnc_refresh_server_surface(vd);
2454 vnc_unlock_display(vd);
2455
2456 QTAILQ_FOREACH_SAFE(vs, &vd->clients, next, vn) {
2457 rects += vnc_update_client(vs, has_dirty);
2458 /* vs might be free()ed here */
2459 }
2460
2461 /* vd->timer could be NULL now if the last client disconnected,
2462 * in this case don't update the timer */
2463 if (vd->timer == NULL)
2464 return;
2465
2466 if (has_dirty && rects) {
2467 vd->timer_interval /= 2;
2468 if (vd->timer_interval < VNC_REFRESH_INTERVAL_BASE)
2469 vd->timer_interval = VNC_REFRESH_INTERVAL_BASE;
2470 } else {
2471 vd->timer_interval += VNC_REFRESH_INTERVAL_INC;
2472 if (vd->timer_interval > VNC_REFRESH_INTERVAL_MAX)
2473 vd->timer_interval = VNC_REFRESH_INTERVAL_MAX;
2474 }
2475 qemu_mod_timer(vd->timer, qemu_get_clock_ms(rt_clock) + vd->timer_interval);
2476 }
2477
2478 static void vnc_init_timer(VncDisplay *vd)
2479 {
2480 vd->timer_interval = VNC_REFRESH_INTERVAL_BASE;
2481 if (vd->timer == NULL && !QTAILQ_EMPTY(&vd->clients)) {
2482 vd->timer = qemu_new_timer_ms(rt_clock, vnc_refresh, vd);
2483 vnc_dpy_resize(vd->ds);
2484 vnc_refresh(vd);
2485 }
2486 }
2487
2488 static void vnc_remove_timer(VncDisplay *vd)
2489 {
2490 if (vd->timer != NULL && QTAILQ_EMPTY(&vd->clients)) {
2491 qemu_del_timer(vd->timer);
2492 qemu_free_timer(vd->timer);
2493 vd->timer = NULL;
2494 }
2495 }
2496
2497 static void vnc_connect(VncDisplay *vd, int csock, int skipauth)
2498 {
2499 VncState *vs = g_malloc0(sizeof(VncState));
2500 int i;
2501
2502 vs->csock = csock;
2503
2504 if (skipauth) {
2505 vs->auth = VNC_AUTH_NONE;
2506 #ifdef CONFIG_VNC_TLS
2507 vs->subauth = VNC_AUTH_INVALID;
2508 #endif
2509 } else {
2510 vs->auth = vd->auth;
2511 #ifdef CONFIG_VNC_TLS
2512 vs->subauth = vd->subauth;
2513 #endif
2514 }
2515
2516 vs->lossy_rect = g_malloc0(VNC_STAT_ROWS * sizeof (*vs->lossy_rect));
2517 for (i = 0; i < VNC_STAT_ROWS; ++i) {
2518 vs->lossy_rect[i] = g_malloc0(VNC_STAT_COLS * sizeof (uint8_t));
2519 }
2520
2521 VNC_DEBUG("New client on socket %d\n", csock);
2522 dcl->idle = 0;
2523 socket_set_nonblock(vs->csock);
2524 qemu_set_fd_handler2(vs->csock, NULL, vnc_client_read, NULL, vs);
2525
2526 vnc_client_cache_addr(vs);
2527 vnc_qmp_event(vs, QEVENT_VNC_CONNECTED);
2528
2529 vs->vd = vd;
2530 vs->ds = vd->ds;
2531 vs->last_x = -1;
2532 vs->last_y = -1;
2533
2534 vs->as.freq = 44100;
2535 vs->as.nchannels = 2;
2536 vs->as.fmt = AUD_FMT_S16;
2537 vs->as.endianness = 0;
2538
2539 #ifdef CONFIG_VNC_THREAD
2540 qemu_mutex_init(&vs->output_mutex);
2541 #endif
2542
2543 QTAILQ_INSERT_HEAD(&vd->clients, vs, next);
2544
2545 vga_hw_update();
2546
2547 vnc_write(vs, "RFB 003.008\n", 12);
2548 vnc_flush(vs);
2549 vnc_read_when(vs, protocol_version, 12);
2550 reset_keys(vs);
2551 if (vs->vd->lock_key_sync)
2552 vs->led = qemu_add_led_event_handler(kbd_leds, vs);
2553
2554 vs->mouse_mode_notifier.notify = check_pointer_type_change;
2555 qemu_add_mouse_mode_change_notifier(&vs->mouse_mode_notifier);
2556
2557 vnc_init_timer(vd);
2558
2559 /* vs might be free()ed here */
2560 }
2561
2562 static void vnc_listen_read(void *opaque)
2563 {
2564 VncDisplay *vs = opaque;
2565 struct sockaddr_in addr;
2566 socklen_t addrlen = sizeof(addr);
2567
2568 /* Catch-up */
2569 vga_hw_update();
2570
2571 int csock = qemu_accept(vs->lsock, (struct sockaddr *)&addr, &addrlen);
2572 if (csock != -1) {
2573 vnc_connect(vs, csock, 0);
2574 }
2575 }
2576
2577 void vnc_display_init(DisplayState *ds)
2578 {
2579 VncDisplay *vs = g_malloc0(sizeof(*vs));
2580
2581 dcl = g_malloc0(sizeof(DisplayChangeListener));
2582
2583 ds->opaque = vs;
2584 dcl->idle = 1;
2585 vnc_display = vs;
2586
2587 vs->lsock = -1;
2588
2589 vs->ds = ds;
2590 QTAILQ_INIT(&vs->clients);
2591 vs->expires = TIME_MAX;
2592
2593 if (keyboard_layout)
2594 vs->kbd_layout = init_keyboard_layout(name2keysym, keyboard_layout);
2595 else
2596 vs->kbd_layout = init_keyboard_layout(name2keysym, "en-us");
2597
2598 if (!vs->kbd_layout)
2599 exit(1);
2600
2601 #ifdef CONFIG_VNC_THREAD
2602 qemu_mutex_init(&vs->mutex);
2603 vnc_start_worker_thread();
2604 #endif
2605
2606 dcl->dpy_copy = vnc_dpy_copy;
2607 dcl->dpy_update = vnc_dpy_update;
2608 dcl->dpy_resize = vnc_dpy_resize;
2609 dcl->dpy_setdata = vnc_dpy_setdata;
2610 register_displaychangelistener(ds, dcl);
2611 ds->mouse_set = vnc_mouse_set;
2612 ds->cursor_define = vnc_dpy_cursor_define;
2613 }
2614
2615
2616 void vnc_display_close(DisplayState *ds)
2617 {
2618 VncDisplay *vs = ds ? (VncDisplay *)ds->opaque : vnc_display;
2619
2620 if (!vs)
2621 return;
2622 if (vs->display) {
2623 g_free(vs->display);
2624 vs->display = NULL;
2625 }
2626 if (vs->lsock != -1) {
2627 qemu_set_fd_handler2(vs->lsock, NULL, NULL, NULL, NULL);
2628 close(vs->lsock);
2629 vs->lsock = -1;
2630 }
2631 vs->auth = VNC_AUTH_INVALID;
2632 #ifdef CONFIG_VNC_TLS
2633 vs->subauth = VNC_AUTH_INVALID;
2634 vs->tls.x509verify = 0;
2635 #endif
2636 }
2637
2638 int vnc_display_disable_login(DisplayState *ds)
2639 {
2640 VncDisplay *vs = ds ? (VncDisplay *)ds->opaque : vnc_display;
2641
2642 if (!vs) {
2643 return -1;
2644 }
2645
2646 if (vs->password) {
2647 g_free(vs->password);
2648 }
2649
2650 vs->password = NULL;
2651 vs->auth = VNC_AUTH_VNC;
2652
2653 return 0;
2654 }
2655
2656 int vnc_display_password(DisplayState *ds, const char *password)
2657 {
2658 int ret = 0;
2659 VncDisplay *vs = ds ? (VncDisplay *)ds->opaque : vnc_display;
2660
2661 if (!vs) {
2662 ret = -EINVAL;
2663 goto out;
2664 }
2665
2666 if (!password) {
2667 /* This is not the intention of this interface but err on the side
2668 of being safe */
2669 ret = vnc_display_disable_login(ds);
2670 goto out;
2671 }
2672
2673 if (vs->password) {
2674 g_free(vs->password);
2675 vs->password = NULL;
2676 }
2677 vs->password = g_strdup(password);
2678 vs->auth = VNC_AUTH_VNC;
2679 out:
2680 if (ret != 0) {
2681 qerror_report(QERR_SET_PASSWD_FAILED);
2682 }
2683 return ret;
2684 }
2685
2686 int vnc_display_pw_expire(DisplayState *ds, time_t expires)
2687 {
2688 VncDisplay *vs = ds ? (VncDisplay *)ds->opaque : vnc_display;
2689
2690 vs->expires = expires;
2691 return 0;
2692 }
2693
2694 char *vnc_display_local_addr(DisplayState *ds)
2695 {
2696 VncDisplay *vs = ds ? (VncDisplay *)ds->opaque : vnc_display;
2697
2698 return vnc_socket_local_addr("%s:%s", vs->lsock);
2699 }
2700
2701 int vnc_display_open(DisplayState *ds, const char *display)
2702 {
2703 VncDisplay *vs = ds ? (VncDisplay *)ds->opaque : vnc_display;
2704 const char *options;
2705 int password = 0;
2706 int reverse = 0;
2707 #ifdef CONFIG_VNC_TLS
2708 int tls = 0, x509 = 0;
2709 #endif
2710 #ifdef CONFIG_VNC_SASL
2711 int sasl = 0;
2712 int saslErr;
2713 #endif
2714 #if defined(CONFIG_VNC_TLS) || defined(CONFIG_VNC_SASL)
2715 int acl = 0;
2716 #endif
2717 int lock_key_sync = 1;
2718
2719 if (!vnc_display)
2720 return -1;
2721 vnc_display_close(ds);
2722 if (strcmp(display, "none") == 0)
2723 return 0;
2724
2725 if (!(vs->display = strdup(display)))
2726 return -1;
2727
2728 options = display;
2729 while ((options = strchr(options, ','))) {
2730 options++;
2731 if (strncmp(options, "password", 8) == 0) {
2732 password = 1; /* Require password auth */
2733 } else if (strncmp(options, "reverse", 7) == 0) {
2734 reverse = 1;
2735 } else if (strncmp(options, "no-lock-key-sync", 9) == 0) {
2736 lock_key_sync = 0;
2737 #ifdef CONFIG_VNC_SASL
2738 } else if (strncmp(options, "sasl", 4) == 0) {
2739 sasl = 1; /* Require SASL auth */
2740 #endif
2741 #ifdef CONFIG_VNC_TLS
2742 } else if (strncmp(options, "tls", 3) == 0) {
2743 tls = 1; /* Require TLS */
2744 } else if (strncmp(options, "x509", 4) == 0) {
2745 char *start, *end;
2746 x509 = 1; /* Require x509 certificates */
2747 if (strncmp(options, "x509verify", 10) == 0)
2748 vs->tls.x509verify = 1; /* ...and verify client certs */
2749
2750 /* Now check for 'x509=/some/path' postfix
2751 * and use that to setup x509 certificate/key paths */
2752 start = strchr(options, '=');
2753 end = strchr(options, ',');
2754 if (start && (!end || (start < end))) {
2755 int len = end ? end-(start+1) : strlen(start+1);
2756 char *path = g_strndup(start + 1, len);
2757
2758 VNC_DEBUG("Trying certificate path '%s'\n", path);
2759 if (vnc_tls_set_x509_creds_dir(vs, path) < 0) {
2760 fprintf(stderr, "Failed to find x509 certificates/keys in %s\n", path);
2761 g_free(path);
2762 g_free(vs->display);
2763 vs->display = NULL;
2764 return -1;
2765 }
2766 g_free(path);
2767 } else {
2768 fprintf(stderr, "No certificate path provided\n");
2769 g_free(vs->display);
2770 vs->display = NULL;
2771 return -1;
2772 }
2773 #endif
2774 #if defined(CONFIG_VNC_TLS) || defined(CONFIG_VNC_SASL)
2775 } else if (strncmp(options, "acl", 3) == 0) {
2776 acl = 1;
2777 #endif
2778 } else if (strncmp(options, "lossy", 5) == 0) {
2779 vs->lossy = true;
2780 } else if (strncmp(options, "non-adapative", 13) == 0) {
2781 vs->non_adaptive = true;
2782 }
2783 }
2784
2785 #ifdef CONFIG_VNC_TLS
2786 if (acl && x509 && vs->tls.x509verify) {
2787 if (!(vs->tls.acl = qemu_acl_init("vnc.x509dname"))) {
2788 fprintf(stderr, "Failed to create x509 dname ACL\n");
2789 exit(1);
2790 }
2791 }
2792 #endif
2793 #ifdef CONFIG_VNC_SASL
2794 if (acl && sasl) {
2795 if (!(vs->sasl.acl = qemu_acl_init("vnc.username"))) {
2796 fprintf(stderr, "Failed to create username ACL\n");
2797 exit(1);
2798 }
2799 }
2800 #endif
2801
2802 /*
2803 * Combinations we support here:
2804 *
2805 * - no-auth (clear text, no auth)
2806 * - password (clear text, weak auth)
2807 * - sasl (encrypt, good auth *IF* using Kerberos via GSSAPI)
2808 * - tls (encrypt, weak anonymous creds, no auth)
2809 * - tls + password (encrypt, weak anonymous creds, weak auth)
2810 * - tls + sasl (encrypt, weak anonymous creds, good auth)
2811 * - tls + x509 (encrypt, good x509 creds, no auth)
2812 * - tls + x509 + password (encrypt, good x509 creds, weak auth)
2813 * - tls + x509 + sasl (encrypt, good x509 creds, good auth)
2814 *
2815 * NB1. TLS is a stackable auth scheme.
2816 * NB2. the x509 schemes have option to validate a client cert dname
2817 */
2818 if (password) {
2819 #ifdef CONFIG_VNC_TLS
2820 if (tls) {
2821 vs->auth = VNC_AUTH_VENCRYPT;
2822 if (x509) {
2823 VNC_DEBUG("Initializing VNC server with x509 password auth\n");
2824 vs->subauth = VNC_AUTH_VENCRYPT_X509VNC;
2825 } else {
2826 VNC_DEBUG("Initializing VNC server with TLS password auth\n");
2827 vs->subauth = VNC_AUTH_VENCRYPT_TLSVNC;
2828 }
2829 } else {
2830 #endif /* CONFIG_VNC_TLS */
2831 VNC_DEBUG("Initializing VNC server with password auth\n");
2832 vs->auth = VNC_AUTH_VNC;
2833 #ifdef CONFIG_VNC_TLS
2834 vs->subauth = VNC_AUTH_INVALID;
2835 }
2836 #endif /* CONFIG_VNC_TLS */
2837 #ifdef CONFIG_VNC_SASL
2838 } else if (sasl) {
2839 #ifdef CONFIG_VNC_TLS
2840 if (tls) {
2841 vs->auth = VNC_AUTH_VENCRYPT;
2842 if (x509) {
2843 VNC_DEBUG("Initializing VNC server with x509 SASL auth\n");
2844 vs->subauth = VNC_AUTH_VENCRYPT_X509SASL;
2845 } else {
2846 VNC_DEBUG("Initializing VNC server with TLS SASL auth\n");
2847 vs->subauth = VNC_AUTH_VENCRYPT_TLSSASL;
2848 }
2849 } else {
2850 #endif /* CONFIG_VNC_TLS */
2851 VNC_DEBUG("Initializing VNC server with SASL auth\n");
2852 vs->auth = VNC_AUTH_SASL;
2853 #ifdef CONFIG_VNC_TLS
2854 vs->subauth = VNC_AUTH_INVALID;
2855 }
2856 #endif /* CONFIG_VNC_TLS */
2857 #endif /* CONFIG_VNC_SASL */
2858 } else {
2859 #ifdef CONFIG_VNC_TLS
2860 if (tls) {
2861 vs->auth = VNC_AUTH_VENCRYPT;
2862 if (x509) {
2863 VNC_DEBUG("Initializing VNC server with x509 no auth\n");
2864 vs->subauth = VNC_AUTH_VENCRYPT_X509NONE;
2865 } else {
2866 VNC_DEBUG("Initializing VNC server with TLS no auth\n");
2867 vs->subauth = VNC_AUTH_VENCRYPT_TLSNONE;
2868 }
2869 } else {
2870 #endif
2871 VNC_DEBUG("Initializing VNC server with no auth\n");
2872 vs->auth = VNC_AUTH_NONE;
2873 #ifdef CONFIG_VNC_TLS
2874 vs->subauth = VNC_AUTH_INVALID;
2875 }
2876 #endif
2877 }
2878
2879 #ifdef CONFIG_VNC_SASL
2880 if ((saslErr = sasl_server_init(NULL, "qemu")) != SASL_OK) {
2881 fprintf(stderr, "Failed to initialize SASL auth %s",
2882 sasl_errstring(saslErr, NULL, NULL));
2883 free(vs->display);
2884 vs->display = NULL;
2885 return -1;
2886 }
2887 #endif
2888 vs->lock_key_sync = lock_key_sync;
2889
2890 if (reverse) {
2891 /* connect to viewer */
2892 if (strncmp(display, "unix:", 5) == 0)
2893 vs->lsock = unix_connect(display+5);
2894 else
2895 vs->lsock = inet_connect(display, SOCK_STREAM);
2896 if (-1 == vs->lsock) {
2897 free(vs->display);
2898 vs->display = NULL;
2899 return -1;
2900 } else {
2901 int csock = vs->lsock;
2902 vs->lsock = -1;
2903 vnc_connect(vs, csock, 0);
2904 }
2905 return 0;
2906
2907 } else {
2908 /* listen for connects */
2909 char *dpy;
2910 dpy = g_malloc(256);
2911 if (strncmp(display, "unix:", 5) == 0) {
2912 pstrcpy(dpy, 256, "unix:");
2913 vs->lsock = unix_listen(display+5, dpy+5, 256-5);
2914 } else {
2915 vs->lsock = inet_listen(display, dpy, 256, SOCK_STREAM, 5900);
2916 }
2917 if (-1 == vs->lsock) {
2918 free(dpy);
2919 return -1;
2920 } else {
2921 free(vs->display);
2922 vs->display = dpy;
2923 }
2924 }
2925 return qemu_set_fd_handler2(vs->lsock, NULL, vnc_listen_read, NULL, vs);
2926 }
2927
2928 void vnc_display_add_client(DisplayState *ds, int csock, int skipauth)
2929 {
2930 VncDisplay *vs = ds ? (VncDisplay *)ds->opaque : vnc_display;
2931
2932 return vnc_connect(vs, csock, skipauth);
2933 }
QEmu