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QError: Don't abort on multiple faults
[qemu/stefanha.git] / vnc.c
blobdb34b0e2a8b4b20ac4d741dab790e7d8235c2e55
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 char *addr_to_string(const char *format,
53 struct sockaddr_storage *sa,
54 socklen_t salen) {
55 char *addr;
56 char host[NI_MAXHOST];
57 char serv[NI_MAXSERV];
58 int err;
59 size_t addrlen;
60
61 if ((err = getnameinfo((struct sockaddr *)sa, salen,
62 host, sizeof(host),
63 serv, sizeof(serv),
64 NI_NUMERICHOST | NI_NUMERICSERV)) != 0) {
65 VNC_DEBUG("Cannot resolve address %d: %s\n",
66 err, gai_strerror(err));
67 return NULL;
68 }
69
70 /* Enough for the existing format + the 2 vars we're
71 * substituting in. */
72 addrlen = strlen(format) + strlen(host) + strlen(serv);
73 addr = qemu_malloc(addrlen + 1);
74 snprintf(addr, addrlen, format, host, serv);
75 addr[addrlen] = '\0';
76
77 return addr;
78 }
79
80
81 char *vnc_socket_local_addr(const char *format, int fd) {
82 struct sockaddr_storage sa;
83 socklen_t salen;
84
85 salen = sizeof(sa);
86 if (getsockname(fd, (struct sockaddr*)&sa, &salen) < 0)
87 return NULL;
88
89 return addr_to_string(format, &sa, salen);
90 }
91
92 char *vnc_socket_remote_addr(const char *format, int fd) {
93 struct sockaddr_storage sa;
94 socklen_t salen;
95
96 salen = sizeof(sa);
97 if (getpeername(fd, (struct sockaddr*)&sa, &salen) < 0)
98 return NULL;
99
100 return addr_to_string(format, &sa, salen);
101 }
102
103 static int put_addr_qdict(QDict *qdict, struct sockaddr_storage *sa,
104 socklen_t salen)
105 {
106 char host[NI_MAXHOST];
107 char serv[NI_MAXSERV];
108 int err;
109
110 if ((err = getnameinfo((struct sockaddr *)sa, salen,
111 host, sizeof(host),
112 serv, sizeof(serv),
113 NI_NUMERICHOST | NI_NUMERICSERV)) != 0) {
114 VNC_DEBUG("Cannot resolve address %d: %s\n",
115 err, gai_strerror(err));
116 return -1;
117 }
118
119 qdict_put(qdict, "host", qstring_from_str(host));
120 qdict_put(qdict, "service", qstring_from_str(serv));
121 qdict_put(qdict, "family",qstring_from_str(inet_strfamily(sa->ss_family)));
122
123 return 0;
124 }
125
126 static int vnc_server_addr_put(QDict *qdict, int fd)
127 {
128 struct sockaddr_storage sa;
129 socklen_t salen;
130
131 salen = sizeof(sa);
132 if (getsockname(fd, (struct sockaddr*)&sa, &salen) < 0) {
133 return -1;
134 }
135
136 return put_addr_qdict(qdict, &sa, salen);
137 }
138
139 static int vnc_qdict_remote_addr(QDict *qdict, int fd)
140 {
141 struct sockaddr_storage sa;
142 socklen_t salen;
143
144 salen = sizeof(sa);
145 if (getpeername(fd, (struct sockaddr*)&sa, &salen) < 0) {
146 return -1;
147 }
148
149 return put_addr_qdict(qdict, &sa, salen);
150 }
151
152 static const char *vnc_auth_name(VncDisplay *vd) {
153 switch (vd->auth) {
154 case VNC_AUTH_INVALID:
155 return "invalid";
156 case VNC_AUTH_NONE:
157 return "none";
158 case VNC_AUTH_VNC:
159 return "vnc";
160 case VNC_AUTH_RA2:
161 return "ra2";
162 case VNC_AUTH_RA2NE:
163 return "ra2ne";
164 case VNC_AUTH_TIGHT:
165 return "tight";
166 case VNC_AUTH_ULTRA:
167 return "ultra";
168 case VNC_AUTH_TLS:
169 return "tls";
170 case VNC_AUTH_VENCRYPT:
171 #ifdef CONFIG_VNC_TLS
172 switch (vd->subauth) {
173 case VNC_AUTH_VENCRYPT_PLAIN:
174 return "vencrypt+plain";
175 case VNC_AUTH_VENCRYPT_TLSNONE:
176 return "vencrypt+tls+none";
177 case VNC_AUTH_VENCRYPT_TLSVNC:
178 return "vencrypt+tls+vnc";
179 case VNC_AUTH_VENCRYPT_TLSPLAIN:
180 return "vencrypt+tls+plain";
181 case VNC_AUTH_VENCRYPT_X509NONE:
182 return "vencrypt+x509+none";
183 case VNC_AUTH_VENCRYPT_X509VNC:
184 return "vencrypt+x509+vnc";
185 case VNC_AUTH_VENCRYPT_X509PLAIN:
186 return "vencrypt+x509+plain";
187 case VNC_AUTH_VENCRYPT_TLSSASL:
188 return "vencrypt+tls+sasl";
189 case VNC_AUTH_VENCRYPT_X509SASL:
190 return "vencrypt+x509+sasl";
191 default:
192 return "vencrypt";
193 }
194 #else
195 return "vencrypt";
196 #endif
197 case VNC_AUTH_SASL:
198 return "sasl";
199 }
200 return "unknown";
201 }
202
203 static int vnc_server_info_put(QDict *qdict)
204 {
205 if (vnc_server_addr_put(qdict, vnc_display->lsock) < 0) {
206 return -1;
207 }
208
209 qdict_put(qdict, "auth", qstring_from_str(vnc_auth_name(vnc_display)));
210 return 0;
211 }
212
213 static void vnc_client_cache_auth(VncState *client)
214 {
215 QDict *qdict;
216
217 if (!client->info) {
218 return;
219 }
220
221 qdict = qobject_to_qdict(client->info);
222
223 #ifdef CONFIG_VNC_TLS
224 if (client->tls.session &&
225 client->tls.dname) {
226 qdict_put(qdict, "x509_dname", qstring_from_str(client->tls.dname));
227 }
228 #endif
229 #ifdef CONFIG_VNC_SASL
230 if (client->sasl.conn &&
231 client->sasl.username) {
232 qdict_put(qdict, "sasl_username",
233 qstring_from_str(client->sasl.username));
234 }
235 #endif
236 }
237
238 static void vnc_client_cache_addr(VncState *client)
239 {
240 QDict *qdict;
241
242 qdict = qdict_new();
243 if (vnc_qdict_remote_addr(qdict, client->csock) < 0) {
244 QDECREF(qdict);
245 /* XXX: how to report the error? */
246 return;
247 }
248
249 client->info = QOBJECT(qdict);
250 }
251
252 static void vnc_qmp_event(VncState *vs, MonitorEvent event)
253 {
254 QDict *server;
255 QObject *data;
256
257 if (!vs->info) {
258 return;
259 }
260
261 server = qdict_new();
262 if (vnc_server_info_put(server) < 0) {
263 QDECREF(server);
264 return;
265 }
266
267 data = qobject_from_jsonf("{ 'client': %p, 'server': %p }",
268 vs->info, QOBJECT(server));
269
270 monitor_protocol_event(event, data);
271
272 qobject_incref(vs->info);
273 qobject_decref(data);
274 }
275
276 static void info_vnc_iter(QObject *obj, void *opaque)
277 {
278 QDict *client;
279 Monitor *mon = opaque;
280
281 client = qobject_to_qdict(obj);
282 monitor_printf(mon, "Client:\n");
283 monitor_printf(mon, " address: %s:%s\n",
284 qdict_get_str(client, "host"),
285 qdict_get_str(client, "service"));
286
287 #ifdef CONFIG_VNC_TLS
288 monitor_printf(mon, " x509_dname: %s\n",
289 qdict_haskey(client, "x509_dname") ?
290 qdict_get_str(client, "x509_dname") : "none");
291 #endif
292 #ifdef CONFIG_VNC_SASL
293 monitor_printf(mon, " username: %s\n",
294 qdict_haskey(client, "sasl_username") ?
295 qdict_get_str(client, "sasl_username") : "none");
296 #endif
297 }
298
299 void do_info_vnc_print(Monitor *mon, const QObject *data)
300 {
301 QDict *server;
302 QList *clients;
303
304 server = qobject_to_qdict(data);
305 if (qdict_get_bool(server, "enabled") == 0) {
306 monitor_printf(mon, "Server: disabled\n");
307 return;
308 }
309
310 monitor_printf(mon, "Server:\n");
311 monitor_printf(mon, " address: %s:%s\n",
312 qdict_get_str(server, "host"),
313 qdict_get_str(server, "service"));
314 monitor_printf(mon, " auth: %s\n", qdict_get_str(server, "auth"));
315
316 clients = qdict_get_qlist(server, "clients");
317 if (qlist_empty(clients)) {
318 monitor_printf(mon, "Client: none\n");
319 } else {
320 qlist_iter(clients, info_vnc_iter, mon);
321 }
322 }
323
324 /**
325 * do_info_vnc(): Show VNC server information
326 *
327 * Return a QDict with server information. Connected clients are returned
328 * as a QList of QDicts.
329 *
330 * The main QDict contains the following:
331 *
332 * - "enabled": true or false
333 * - "host": server's IP address
334 * - "family": address family ("ipv4" or "ipv6")
335 * - "service": server's port number
336 * - "auth": authentication method
337 * - "clients": a QList of all connected clients
338 *
339 * Clients are described by a QDict, with the following information:
340 *
341 * - "host": client's IP address
342 * - "family": address family ("ipv4" or "ipv6")
343 * - "service": client's port number
344 * - "x509_dname": TLS dname (optional)
345 * - "sasl_username": SASL username (optional)
346 *
347 * Example:
348 *
349 * { "enabled": true, "host": "0.0.0.0", "service": "50402", "auth": "vnc",
350 * "family": "ipv4",
351 * "clients": [{ "host": "127.0.0.1", "service": "50401", "family": "ipv4" }]}
352 */
353 void do_info_vnc(Monitor *mon, QObject **ret_data)
354 {
355 if (vnc_display == NULL || vnc_display->display == NULL) {
356 *ret_data = qobject_from_jsonf("{ 'enabled': false }");
357 } else {
358 QList *clist;
359 VncState *client;
360
361 clist = qlist_new();
362 QTAILQ_FOREACH(client, &vnc_display->clients, next) {
363 if (client->info) {
364 /* incref so that it's not freed by upper layers */
365 qobject_incref(client->info);
366 qlist_append_obj(clist, client->info);
367 }
368 }
369
370 *ret_data = qobject_from_jsonf("{ 'enabled': true, 'clients': %p }",
371 QOBJECT(clist));
372 assert(*ret_data != NULL);
373
374 if (vnc_server_info_put(qobject_to_qdict(*ret_data)) < 0) {
375 qobject_decref(*ret_data);
376 *ret_data = NULL;
377 }
378 }
379 }
380
381 static inline uint32_t vnc_has_feature(VncState *vs, int feature) {
382 return (vs->features & (1 << feature));
383 }
384
385 /* TODO
386 1) Get the queue working for IO.
387 2) there is some weirdness when using the -S option (the screen is grey
388 and not totally invalidated
389 3) resolutions > 1024
390 */
391
392 static int vnc_update_client(VncState *vs, int has_dirty);
393 static void vnc_disconnect_start(VncState *vs);
394 static void vnc_disconnect_finish(VncState *vs);
395 static void vnc_init_timer(VncDisplay *vd);
396 static void vnc_remove_timer(VncDisplay *vd);
397
398 static void vnc_colordepth(VncState *vs);
399 static void framebuffer_update_request(VncState *vs, int incremental,
400 int x_position, int y_position,
401 int w, int h);
402 static void vnc_refresh(void *opaque);
403 static int vnc_refresh_server_surface(VncDisplay *vd);
404
405 static inline void vnc_set_bit(uint32_t *d, int k)
406 {
407 d[k >> 5] |= 1 << (k & 0x1f);
408 }
409
410 static inline void vnc_clear_bit(uint32_t *d, int k)
411 {
412 d[k >> 5] &= ~(1 << (k & 0x1f));
413 }
414
415 static inline void vnc_set_bits(uint32_t *d, int n, int nb_words)
416 {
417 int j;
418
419 j = 0;
420 while (n >= 32) {
421 d[j++] = -1;
422 n -= 32;
423 }
424 if (n > 0)
425 d[j++] = (1 << n) - 1;
426 while (j < nb_words)
427 d[j++] = 0;
428 }
429
430 static inline int vnc_get_bit(const uint32_t *d, int k)
431 {
432 return (d[k >> 5] >> (k & 0x1f)) & 1;
433 }
434
435 static inline int vnc_and_bits(const uint32_t *d1, const uint32_t *d2,
436 int nb_words)
437 {
438 int i;
439 for(i = 0; i < nb_words; i++) {
440 if ((d1[i] & d2[i]) != 0)
441 return 1;
442 }
443 return 0;
444 }
445
446 static void vnc_dpy_update(DisplayState *ds, int x, int y, int w, int h)
447 {
448 int i;
449 VncDisplay *vd = ds->opaque;
450 struct VncSurface *s = &vd->guest;
451
452 h += y;
453
454 /* round x down to ensure the loop only spans one 16-pixel block per,
455 iteration. otherwise, if (x % 16) != 0, the last iteration may span
456 two 16-pixel blocks but we only mark the first as dirty
457 */
458 w += (x % 16);
459 x -= (x % 16);
460
461 x = MIN(x, s->ds->width);
462 y = MIN(y, s->ds->height);
463 w = MIN(x + w, s->ds->width) - x;
464 h = MIN(h, s->ds->height);
465
466 for (; y < h; y++)
467 for (i = 0; i < w; i += 16)
468 vnc_set_bit(s->dirty[y], (x + i) / 16);
469 }
470
471 static void vnc_framebuffer_update(VncState *vs, int x, int y, int w, int h,
472 int32_t encoding)
473 {
474 vnc_write_u16(vs, x);
475 vnc_write_u16(vs, y);
476 vnc_write_u16(vs, w);
477 vnc_write_u16(vs, h);
478
479 vnc_write_s32(vs, encoding);
480 }
481
482 void buffer_reserve(Buffer *buffer, size_t len)
483 {
484 if ((buffer->capacity - buffer->offset) < len) {
485 buffer->capacity += (len + 1024);
486 buffer->buffer = qemu_realloc(buffer->buffer, buffer->capacity);
487 if (buffer->buffer == NULL) {
488 fprintf(stderr, "vnc: out of memory\n");
489 exit(1);
490 }
491 }
492 }
493
494 int buffer_empty(Buffer *buffer)
495 {
496 return buffer->offset == 0;
497 }
498
499 uint8_t *buffer_end(Buffer *buffer)
500 {
501 return buffer->buffer + buffer->offset;
502 }
503
504 void buffer_reset(Buffer *buffer)
505 {
506 buffer->offset = 0;
507 }
508
509 void buffer_append(Buffer *buffer, const void *data, size_t len)
510 {
511 memcpy(buffer->buffer + buffer->offset, data, len);
512 buffer->offset += len;
513 }
514
515 static void vnc_dpy_resize(DisplayState *ds)
516 {
517 int size_changed;
518 VncDisplay *vd = ds->opaque;
519 VncState *vs;
520
521 /* server surface */
522 if (!vd->server)
523 vd->server = qemu_mallocz(sizeof(*vd->server));
524 if (vd->server->data)
525 qemu_free(vd->server->data);
526 *(vd->server) = *(ds->surface);
527 vd->server->data = qemu_mallocz(vd->server->linesize *
528 vd->server->height);
529
530 /* guest surface */
531 if (!vd->guest.ds)
532 vd->guest.ds = qemu_mallocz(sizeof(*vd->guest.ds));
533 if (ds_get_bytes_per_pixel(ds) != vd->guest.ds->pf.bytes_per_pixel)
534 console_color_init(ds);
535 size_changed = ds_get_width(ds) != vd->guest.ds->width ||
536 ds_get_height(ds) != vd->guest.ds->height;
537 *(vd->guest.ds) = *(ds->surface);
538 memset(vd->guest.dirty, 0xFF, sizeof(vd->guest.dirty));
539
540 QTAILQ_FOREACH(vs, &vd->clients, next) {
541 vnc_colordepth(vs);
542 if (size_changed) {
543 if (vs->csock != -1 && vnc_has_feature(vs, VNC_FEATURE_RESIZE)) {
544 vnc_write_u8(vs, 0); /* msg id */
545 vnc_write_u8(vs, 0);
546 vnc_write_u16(vs, 1); /* number of rects */
547 vnc_framebuffer_update(vs, 0, 0, ds_get_width(ds), ds_get_height(ds),
548 VNC_ENCODING_DESKTOPRESIZE);
549 vnc_flush(vs);
550 }
551 }
552 memset(vs->dirty, 0xFF, sizeof(vs->dirty));
553 }
554 }
555
556 /* fastest code */
557 static void vnc_write_pixels_copy(VncState *vs, void *pixels, int size)
558 {
559 vnc_write(vs, pixels, size);
560 }
561
562 /* slowest but generic code. */
563 static void vnc_convert_pixel(VncState *vs, uint8_t *buf, uint32_t v)
564 {
565 uint8_t r, g, b;
566 VncDisplay *vd = vs->vd;
567
568 r = ((((v & vd->server->pf.rmask) >> vd->server->pf.rshift) << vs->clientds.pf.rbits) >>
569 vd->server->pf.rbits);
570 g = ((((v & vd->server->pf.gmask) >> vd->server->pf.gshift) << vs->clientds.pf.gbits) >>
571 vd->server->pf.gbits);
572 b = ((((v & vd->server->pf.bmask) >> vd->server->pf.bshift) << vs->clientds.pf.bbits) >>
573 vd->server->pf.bbits);
574 v = (r << vs->clientds.pf.rshift) |
575 (g << vs->clientds.pf.gshift) |
576 (b << vs->clientds.pf.bshift);
577 switch(vs->clientds.pf.bytes_per_pixel) {
578 case 1:
579 buf[0] = v;
580 break;
581 case 2:
582 if (vs->clientds.flags & QEMU_BIG_ENDIAN_FLAG) {
583 buf[0] = v >> 8;
584 buf[1] = v;
585 } else {
586 buf[1] = v >> 8;
587 buf[0] = v;
588 }
589 break;
590 default:
591 case 4:
592 if (vs->clientds.flags & QEMU_BIG_ENDIAN_FLAG) {
593 buf[0] = v >> 24;
594 buf[1] = v >> 16;
595 buf[2] = v >> 8;
596 buf[3] = v;
597 } else {
598 buf[3] = v >> 24;
599 buf[2] = v >> 16;
600 buf[1] = v >> 8;
601 buf[0] = v;
602 }
603 break;
604 }
605 }
606
607 static void vnc_write_pixels_generic(VncState *vs, void *pixels1, int size)
608 {
609 uint8_t buf[4];
610 VncDisplay *vd = vs->vd;
611
612 if (vd->server->pf.bytes_per_pixel == 4) {
613 uint32_t *pixels = pixels1;
614 int n, i;
615 n = size >> 2;
616 for(i = 0; i < n; i++) {
617 vnc_convert_pixel(vs, buf, pixels[i]);
618 vnc_write(vs, buf, vs->clientds.pf.bytes_per_pixel);
619 }
620 } else if (vd->server->pf.bytes_per_pixel == 2) {
621 uint16_t *pixels = pixels1;
622 int n, i;
623 n = size >> 1;
624 for(i = 0; i < n; i++) {
625 vnc_convert_pixel(vs, buf, pixels[i]);
626 vnc_write(vs, buf, vs->clientds.pf.bytes_per_pixel);
627 }
628 } else if (vd->server->pf.bytes_per_pixel == 1) {
629 uint8_t *pixels = pixels1;
630 int n, i;
631 n = size;
632 for(i = 0; i < n; i++) {
633 vnc_convert_pixel(vs, buf, pixels[i]);
634 vnc_write(vs, buf, vs->clientds.pf.bytes_per_pixel);
635 }
636 } else {
637 fprintf(stderr, "vnc_write_pixels_generic: VncState color depth not supported\n");
638 }
639 }
640
641 static void send_framebuffer_update_raw(VncState *vs, int x, int y, int w, int h)
642 {
643 int i;
644 uint8_t *row;
645 VncDisplay *vd = vs->vd;
646
647 row = vd->server->data + y * ds_get_linesize(vs->ds) + x * ds_get_bytes_per_pixel(vs->ds);
648 for (i = 0; i < h; i++) {
649 vs->write_pixels(vs, row, w * ds_get_bytes_per_pixel(vs->ds));
650 row += ds_get_linesize(vs->ds);
651 }
652 }
653
654 static void hextile_enc_cord(uint8_t *ptr, int x, int y, int w, int h)
655 {
656 ptr[0] = ((x & 0x0F) << 4) | (y & 0x0F);
657 ptr[1] = (((w - 1) & 0x0F) << 4) | ((h - 1) & 0x0F);
658 }
659
660 #define BPP 8
661 #include "vnchextile.h"
662 #undef BPP
663
664 #define BPP 16
665 #include "vnchextile.h"
666 #undef BPP
667
668 #define BPP 32
669 #include "vnchextile.h"
670 #undef BPP
671
672 #define GENERIC
673 #define BPP 8
674 #include "vnchextile.h"
675 #undef BPP
676 #undef GENERIC
677
678 #define GENERIC
679 #define BPP 16
680 #include "vnchextile.h"
681 #undef BPP
682 #undef GENERIC
683
684 #define GENERIC
685 #define BPP 32
686 #include "vnchextile.h"
687 #undef BPP
688 #undef GENERIC
689
690 static void send_framebuffer_update_hextile(VncState *vs, int x, int y, int w, int h)
691 {
692 int i, j;
693 int has_fg, has_bg;
694 uint8_t *last_fg, *last_bg;
695 VncDisplay *vd = vs->vd;
696
697 last_fg = (uint8_t *) qemu_malloc(vd->server->pf.bytes_per_pixel);
698 last_bg = (uint8_t *) qemu_malloc(vd->server->pf.bytes_per_pixel);
699 has_fg = has_bg = 0;
700 for (j = y; j < (y + h); j += 16) {
701 for (i = x; i < (x + w); i += 16) {
702 vs->send_hextile_tile(vs, i, j,
703 MIN(16, x + w - i), MIN(16, y + h - j),
704 last_bg, last_fg, &has_bg, &has_fg);
705 }
706 }
707 free(last_fg);
708 free(last_bg);
709
710 }
711
712 #define ZALLOC_ALIGNMENT 16
713
714 static void *zalloc(void *x, unsigned items, unsigned size)
715 {
716 void *p;
717
718 size *= items;
719 size = (size + ZALLOC_ALIGNMENT - 1) & ~(ZALLOC_ALIGNMENT - 1);
720
721 p = qemu_mallocz(size);
722
723 return (p);
724 }
725
726 static void zfree(void *x, void *addr)
727 {
728 qemu_free(addr);
729 }
730
731 static void vnc_zlib_init(VncState *vs)
732 {
733 int i;
734 for (i=0; i<(sizeof(vs->zlib_stream) / sizeof(z_stream)); i++)
735 vs->zlib_stream[i].opaque = NULL;
736 }
737
738 static void vnc_zlib_start(VncState *vs)
739 {
740 buffer_reset(&vs->zlib);
741
742 // make the output buffer be the zlib buffer, so we can compress it later
743 vs->zlib_tmp = vs->output;
744 vs->output = vs->zlib;
745 }
746
747 static int vnc_zlib_stop(VncState *vs, int stream_id)
748 {
749 z_streamp zstream = &vs->zlib_stream[stream_id];
750 int previous_out;
751
752 // switch back to normal output/zlib buffers
753 vs->zlib = vs->output;
754 vs->output = vs->zlib_tmp;
755
756 // compress the zlib buffer
757
758 // initialize the stream
759 // XXX need one stream per session
760 if (zstream->opaque != vs) {
761 int err;
762
763 VNC_DEBUG("VNC: initializing zlib stream %d\n", stream_id);
764 VNC_DEBUG("VNC: opaque = %p | vs = %p\n", zstream->opaque, vs);
765 zstream->zalloc = zalloc;
766 zstream->zfree = zfree;
767
768 err = deflateInit2(zstream, vs->tight_compression, Z_DEFLATED, MAX_WBITS,
769 MAX_MEM_LEVEL, Z_DEFAULT_STRATEGY);
770
771 if (err != Z_OK) {
772 fprintf(stderr, "VNC: error initializing zlib\n");
773 return -1;
774 }
775
776 zstream->opaque = vs;
777 }
778
779 // XXX what to do if tight_compression changed in between?
780
781 // reserve memory in output buffer
782 buffer_reserve(&vs->output, vs->zlib.offset + 64);
783
784 // set pointers
785 zstream->next_in = vs->zlib.buffer;
786 zstream->avail_in = vs->zlib.offset;
787 zstream->next_out = vs->output.buffer + vs->output.offset;
788 zstream->avail_out = vs->output.capacity - vs->output.offset;
789 zstream->data_type = Z_BINARY;
790 previous_out = zstream->total_out;
791
792 // start encoding
793 if (deflate(zstream, Z_SYNC_FLUSH) != Z_OK) {
794 fprintf(stderr, "VNC: error during zlib compression\n");
795 return -1;
796 }
797
798 vs->output.offset = vs->output.capacity - zstream->avail_out;
799 return zstream->total_out - previous_out;
800 }
801
802 static void send_framebuffer_update_zlib(VncState *vs, int x, int y, int w, int h)
803 {
804 int old_offset, new_offset, bytes_written;
805
806 vnc_framebuffer_update(vs, x, y, w, h, VNC_ENCODING_ZLIB);
807
808 // remember where we put in the follow-up size
809 old_offset = vs->output.offset;
810 vnc_write_s32(vs, 0);
811
812 // compress the stream
813 vnc_zlib_start(vs);
814 send_framebuffer_update_raw(vs, x, y, w, h);
815 bytes_written = vnc_zlib_stop(vs, 0);
816
817 if (bytes_written == -1)
818 return;
819
820 // hack in the size
821 new_offset = vs->output.offset;
822 vs->output.offset = old_offset;
823 vnc_write_u32(vs, bytes_written);
824 vs->output.offset = new_offset;
825 }
826
827 static void send_framebuffer_update(VncState *vs, int x, int y, int w, int h)
828 {
829 switch(vs->vnc_encoding) {
830 case VNC_ENCODING_ZLIB:
831 send_framebuffer_update_zlib(vs, x, y, w, h);
832 break;
833 case VNC_ENCODING_HEXTILE:
834 vnc_framebuffer_update(vs, x, y, w, h, VNC_ENCODING_HEXTILE);
835 send_framebuffer_update_hextile(vs, x, y, w, h);
836 break;
837 default:
838 vnc_framebuffer_update(vs, x, y, w, h, VNC_ENCODING_RAW);
839 send_framebuffer_update_raw(vs, x, y, w, h);
840 break;
841 }
842 }
843
844 static void vnc_copy(VncState *vs, int src_x, int src_y, int dst_x, int dst_y, int w, int h)
845 {
846 /* send bitblit op to the vnc client */
847 vnc_write_u8(vs, 0); /* msg id */
848 vnc_write_u8(vs, 0);
849 vnc_write_u16(vs, 1); /* number of rects */
850 vnc_framebuffer_update(vs, dst_x, dst_y, w, h, VNC_ENCODING_COPYRECT);
851 vnc_write_u16(vs, src_x);
852 vnc_write_u16(vs, src_y);
853 vnc_flush(vs);
854 }
855
856 static void vnc_dpy_copy(DisplayState *ds, int src_x, int src_y, int dst_x, int dst_y, int w, int h)
857 {
858 VncDisplay *vd = ds->opaque;
859 VncState *vs, *vn;
860 uint8_t *src_row;
861 uint8_t *dst_row;
862 int i,x,y,pitch,depth,inc,w_lim,s;
863 int cmp_bytes;
864
865 vnc_refresh_server_surface(vd);
866 QTAILQ_FOREACH_SAFE(vs, &vd->clients, next, vn) {
867 if (vnc_has_feature(vs, VNC_FEATURE_COPYRECT)) {
868 vs->force_update = 1;
869 vnc_update_client(vs, 1);
870 /* vs might be free()ed here */
871 }
872 }
873
874 /* do bitblit op on the local surface too */
875 pitch = ds_get_linesize(vd->ds);
876 depth = ds_get_bytes_per_pixel(vd->ds);
877 src_row = vd->server->data + pitch * src_y + depth * src_x;
878 dst_row = vd->server->data + pitch * dst_y + depth * dst_x;
879 y = dst_y;
880 inc = 1;
881 if (dst_y > src_y) {
882 /* copy backwards */
883 src_row += pitch * (h-1);
884 dst_row += pitch * (h-1);
885 pitch = -pitch;
886 y = dst_y + h - 1;
887 inc = -1;
888 }
889 w_lim = w - (16 - (dst_x % 16));
890 if (w_lim < 0)
891 w_lim = w;
892 else
893 w_lim = w - (w_lim % 16);
894 for (i = 0; i < h; i++) {
895 for (x = 0; x <= w_lim;
896 x += s, src_row += cmp_bytes, dst_row += cmp_bytes) {
897 if (x == w_lim) {
898 if ((s = w - w_lim) == 0)
899 break;
900 } else if (!x) {
901 s = (16 - (dst_x % 16));
902 s = MIN(s, w_lim);
903 } else {
904 s = 16;
905 }
906 cmp_bytes = s * depth;
907 if (memcmp(src_row, dst_row, cmp_bytes) == 0)
908 continue;
909 memmove(dst_row, src_row, cmp_bytes);
910 QTAILQ_FOREACH(vs, &vd->clients, next) {
911 if (!vnc_has_feature(vs, VNC_FEATURE_COPYRECT)) {
912 vnc_set_bit(vs->dirty[y], ((x + dst_x) / 16));
913 }
914 }
915 }
916 src_row += pitch - w * depth;
917 dst_row += pitch - w * depth;
918 y += inc;
919 }
920
921 QTAILQ_FOREACH(vs, &vd->clients, next) {
922 if (vnc_has_feature(vs, VNC_FEATURE_COPYRECT)) {
923 vnc_copy(vs, src_x, src_y, dst_x, dst_y, w, h);
924 }
925 }
926 }
927
928 static int find_and_clear_dirty_height(struct VncState *vs,
929 int y, int last_x, int x)
930 {
931 int h;
932 VncDisplay *vd = vs->vd;
933
934 for (h = 1; h < (vd->server->height - y); h++) {
935 int tmp_x;
936 if (!vnc_get_bit(vs->dirty[y + h], last_x))
937 break;
938 for (tmp_x = last_x; tmp_x < x; tmp_x++)
939 vnc_clear_bit(vs->dirty[y + h], tmp_x);
940 }
941
942 return h;
943 }
944
945 static int vnc_update_client(VncState *vs, int has_dirty)
946 {
947 if (vs->need_update && vs->csock != -1) {
948 VncDisplay *vd = vs->vd;
949 int y;
950 int n_rectangles;
951 int saved_offset;
952
953 if (vs->output.offset && !vs->audio_cap && !vs->force_update)
954 /* kernel send buffers are full -> drop frames to throttle */
955 return 0;
956
957 if (!has_dirty && !vs->audio_cap && !vs->force_update)
958 return 0;
959
960 /*
961 * Send screen updates to the vnc client using the server
962 * surface and server dirty map. guest surface updates
963 * happening in parallel don't disturb us, the next pass will
964 * send them to the client.
965 */
966 n_rectangles = 0;
967 vnc_write_u8(vs, 0); /* msg id */
968 vnc_write_u8(vs, 0);
969 saved_offset = vs->output.offset;
970 vnc_write_u16(vs, 0);
971
972 for (y = 0; y < vd->server->height; y++) {
973 int x;
974 int last_x = -1;
975 for (x = 0; x < vd->server->width / 16; x++) {
976 if (vnc_get_bit(vs->dirty[y], x)) {
977 if (last_x == -1) {
978 last_x = x;
979 }
980 vnc_clear_bit(vs->dirty[y], x);
981 } else {
982 if (last_x != -1) {
983 int h = find_and_clear_dirty_height(vs, y, last_x, x);
984 send_framebuffer_update(vs, last_x * 16, y, (x - last_x) * 16, h);
985 n_rectangles++;
986 }
987 last_x = -1;
988 }
989 }
990 if (last_x != -1) {
991 int h = find_and_clear_dirty_height(vs, y, last_x, x);
992 send_framebuffer_update(vs, last_x * 16, y, (x - last_x) * 16, h);
993 n_rectangles++;
994 }
995 }
996 vs->output.buffer[saved_offset] = (n_rectangles >> 8) & 0xFF;
997 vs->output.buffer[saved_offset + 1] = n_rectangles & 0xFF;
998 vnc_flush(vs);
999 vs->force_update = 0;
1000 return n_rectangles;
1001 }
1002
1003 if (vs->csock == -1)
1004 vnc_disconnect_finish(vs);
1005
1006 return 0;
1007 }
1008
1009 /* audio */
1010 static void audio_capture_notify(void *opaque, audcnotification_e cmd)
1011 {
1012 VncState *vs = opaque;
1013
1014 switch (cmd) {
1015 case AUD_CNOTIFY_DISABLE:
1016 vnc_write_u8(vs, 255);
1017 vnc_write_u8(vs, 1);
1018 vnc_write_u16(vs, 0);
1019 vnc_flush(vs);
1020 break;
1021
1022 case AUD_CNOTIFY_ENABLE:
1023 vnc_write_u8(vs, 255);
1024 vnc_write_u8(vs, 1);
1025 vnc_write_u16(vs, 1);
1026 vnc_flush(vs);
1027 break;
1028 }
1029 }
1030
1031 static void audio_capture_destroy(void *opaque)
1032 {
1033 }
1034
1035 static void audio_capture(void *opaque, void *buf, int size)
1036 {
1037 VncState *vs = opaque;
1038
1039 vnc_write_u8(vs, 255);
1040 vnc_write_u8(vs, 1);
1041 vnc_write_u16(vs, 2);
1042 vnc_write_u32(vs, size);
1043 vnc_write(vs, buf, size);
1044 vnc_flush(vs);
1045 }
1046
1047 static void audio_add(VncState *vs)
1048 {
1049 Monitor *mon = cur_mon;
1050 struct audio_capture_ops ops;
1051
1052 if (vs->audio_cap) {
1053 monitor_printf(mon, "audio already running\n");
1054 return;
1055 }
1056
1057 ops.notify = audio_capture_notify;
1058 ops.destroy = audio_capture_destroy;
1059 ops.capture = audio_capture;
1060
1061 vs->audio_cap = AUD_add_capture(&vs->as, &ops, vs);
1062 if (!vs->audio_cap) {
1063 monitor_printf(mon, "Failed to add audio capture\n");
1064 }
1065 }
1066
1067 static void audio_del(VncState *vs)
1068 {
1069 if (vs->audio_cap) {
1070 AUD_del_capture(vs->audio_cap, vs);
1071 vs->audio_cap = NULL;
1072 }
1073 }
1074
1075 static void vnc_disconnect_start(VncState *vs)
1076 {
1077 if (vs->csock == -1)
1078 return;
1079 qemu_set_fd_handler2(vs->csock, NULL, NULL, NULL, NULL);
1080 closesocket(vs->csock);
1081 vs->csock = -1;
1082 }
1083
1084 static void vnc_disconnect_finish(VncState *vs)
1085 {
1086 vnc_qmp_event(vs, QEVENT_VNC_DISCONNECTED);
1087
1088 if (vs->input.buffer) {
1089 qemu_free(vs->input.buffer);
1090 vs->input.buffer = NULL;
1091 }
1092 if (vs->output.buffer) {
1093 qemu_free(vs->output.buffer);
1094 vs->output.buffer = NULL;
1095 }
1096
1097 qobject_decref(vs->info);
1098
1099 #ifdef CONFIG_VNC_TLS
1100 vnc_tls_client_cleanup(vs);
1101 #endif /* CONFIG_VNC_TLS */
1102 #ifdef CONFIG_VNC_SASL
1103 vnc_sasl_client_cleanup(vs);
1104 #endif /* CONFIG_VNC_SASL */
1105 audio_del(vs);
1106
1107 QTAILQ_REMOVE(&vs->vd->clients, vs, next);
1108
1109 if (QTAILQ_EMPTY(&vs->vd->clients)) {
1110 dcl->idle = 1;
1111 }
1112
1113 vnc_remove_timer(vs->vd);
1114 qemu_free(vs);
1115 }
1116
1117 int vnc_client_io_error(VncState *vs, int ret, int last_errno)
1118 {
1119 if (ret == 0 || ret == -1) {
1120 if (ret == -1) {
1121 switch (last_errno) {
1122 case EINTR:
1123 case EAGAIN:
1124 #ifdef _WIN32
1125 case WSAEWOULDBLOCK:
1126 #endif
1127 return 0;
1128 default:
1129 break;
1130 }
1131 }
1132
1133 VNC_DEBUG("Closing down client sock: ret %d, errno %d\n",
1134 ret, ret < 0 ? last_errno : 0);
1135 vnc_disconnect_start(vs);
1136
1137 return 0;
1138 }
1139 return ret;
1140 }
1141
1142
1143 void vnc_client_error(VncState *vs)
1144 {
1145 VNC_DEBUG("Closing down client sock: protocol error\n");
1146 vnc_disconnect_start(vs);
1147 }
1148
1149
1150 /*
1151 * Called to write a chunk of data to the client socket. The data may
1152 * be the raw data, or may have already been encoded by SASL.
1153 * The data will be written either straight onto the socket, or
1154 * written via the GNUTLS wrappers, if TLS/SSL encryption is enabled
1155 *
1156 * NB, it is theoretically possible to have 2 layers of encryption,
1157 * both SASL, and this TLS layer. It is highly unlikely in practice
1158 * though, since SASL encryption will typically be a no-op if TLS
1159 * is active
1160 *
1161 * Returns the number of bytes written, which may be less than
1162 * the requested 'datalen' if the socket would block. Returns
1163 * -1 on error, and disconnects the client socket.
1164 */
1165 long vnc_client_write_buf(VncState *vs, const uint8_t *data, size_t datalen)
1166 {
1167 long ret;
1168 #ifdef CONFIG_VNC_TLS
1169 if (vs->tls.session) {
1170 ret = gnutls_write(vs->tls.session, data, datalen);
1171 if (ret < 0) {
1172 if (ret == GNUTLS_E_AGAIN)
1173 errno = EAGAIN;
1174 else
1175 errno = EIO;
1176 ret = -1;
1177 }
1178 } else
1179 #endif /* CONFIG_VNC_TLS */
1180 ret = send(vs->csock, (const void *)data, datalen, 0);
1181 VNC_DEBUG("Wrote wire %p %zd -> %ld\n", data, datalen, ret);
1182 return vnc_client_io_error(vs, ret, socket_error());
1183 }
1184
1185
1186 /*
1187 * Called to write buffered data to the client socket, when not
1188 * using any SASL SSF encryption layers. Will write as much data
1189 * as possible without blocking. If all buffered data is written,
1190 * will switch the FD poll() handler back to read monitoring.
1191 *
1192 * Returns the number of bytes written, which may be less than
1193 * the buffered output data if the socket would block. Returns
1194 * -1 on error, and disconnects the client socket.
1195 */
1196 static long vnc_client_write_plain(VncState *vs)
1197 {
1198 long ret;
1199
1200 #ifdef CONFIG_VNC_SASL
1201 VNC_DEBUG("Write Plain: Pending output %p size %zd offset %zd. Wait SSF %d\n",
1202 vs->output.buffer, vs->output.capacity, vs->output.offset,
1203 vs->sasl.waitWriteSSF);
1204
1205 if (vs->sasl.conn &&
1206 vs->sasl.runSSF &&
1207 vs->sasl.waitWriteSSF) {
1208 ret = vnc_client_write_buf(vs, vs->output.buffer, vs->sasl.waitWriteSSF);
1209 if (ret)
1210 vs->sasl.waitWriteSSF -= ret;
1211 } else
1212 #endif /* CONFIG_VNC_SASL */
1213 ret = vnc_client_write_buf(vs, vs->output.buffer, vs->output.offset);
1214 if (!ret)
1215 return 0;
1216
1217 memmove(vs->output.buffer, vs->output.buffer + ret, (vs->output.offset - ret));
1218 vs->output.offset -= ret;
1219
1220 if (vs->output.offset == 0) {
1221 qemu_set_fd_handler2(vs->csock, NULL, vnc_client_read, NULL, vs);
1222 }
1223
1224 return ret;
1225 }
1226
1227
1228 /*
1229 * First function called whenever there is data to be written to
1230 * the client socket. Will delegate actual work according to whether
1231 * SASL SSF layers are enabled (thus requiring encryption calls)
1232 */
1233 void vnc_client_write(void *opaque)
1234 {
1235 long ret;
1236 VncState *vs = opaque;
1237
1238 #ifdef CONFIG_VNC_SASL
1239 if (vs->sasl.conn &&
1240 vs->sasl.runSSF &&
1241 !vs->sasl.waitWriteSSF)
1242 ret = vnc_client_write_sasl(vs);
1243 else
1244 #endif /* CONFIG_VNC_SASL */
1245 ret = vnc_client_write_plain(vs);
1246 }
1247
1248 void vnc_read_when(VncState *vs, VncReadEvent *func, size_t expecting)
1249 {
1250 vs->read_handler = func;
1251 vs->read_handler_expect = expecting;
1252 }
1253
1254
1255 /*
1256 * Called to read a chunk of data from the client socket. The data may
1257 * be the raw data, or may need to be further decoded by SASL.
1258 * The data will be read either straight from to the socket, or
1259 * read via the GNUTLS wrappers, if TLS/SSL encryption is enabled
1260 *
1261 * NB, it is theoretically possible to have 2 layers of encryption,
1262 * both SASL, and this TLS layer. It is highly unlikely in practice
1263 * though, since SASL encryption will typically be a no-op if TLS
1264 * is active
1265 *
1266 * Returns the number of bytes read, which may be less than
1267 * the requested 'datalen' if the socket would block. Returns
1268 * -1 on error, and disconnects the client socket.
1269 */
1270 long vnc_client_read_buf(VncState *vs, uint8_t *data, size_t datalen)
1271 {
1272 long ret;
1273 #ifdef CONFIG_VNC_TLS
1274 if (vs->tls.session) {
1275 ret = gnutls_read(vs->tls.session, data, datalen);
1276 if (ret < 0) {
1277 if (ret == GNUTLS_E_AGAIN)
1278 errno = EAGAIN;
1279 else
1280 errno = EIO;
1281 ret = -1;
1282 }
1283 } else
1284 #endif /* CONFIG_VNC_TLS */
1285 ret = recv(vs->csock, (void *)data, datalen, 0);
1286 VNC_DEBUG("Read wire %p %zd -> %ld\n", data, datalen, ret);
1287 return vnc_client_io_error(vs, ret, socket_error());
1288 }
1289
1290
1291 /*
1292 * Called to read data from the client socket to the input buffer,
1293 * when not using any SASL SSF encryption layers. Will read as much
1294 * data as possible without blocking.
1295 *
1296 * Returns the number of bytes read. Returns -1 on error, and
1297 * disconnects the client socket.
1298 */
1299 static long vnc_client_read_plain(VncState *vs)
1300 {
1301 int ret;
1302 VNC_DEBUG("Read plain %p size %zd offset %zd\n",
1303 vs->input.buffer, vs->input.capacity, vs->input.offset);
1304 buffer_reserve(&vs->input, 4096);
1305 ret = vnc_client_read_buf(vs, buffer_end(&vs->input), 4096);
1306 if (!ret)
1307 return 0;
1308 vs->input.offset += ret;
1309 return ret;
1310 }
1311
1312
1313 /*
1314 * First function called whenever there is more data to be read from
1315 * the client socket. Will delegate actual work according to whether
1316 * SASL SSF layers are enabled (thus requiring decryption calls)
1317 */
1318 void vnc_client_read(void *opaque)
1319 {
1320 VncState *vs = opaque;
1321 long ret;
1322
1323 #ifdef CONFIG_VNC_SASL
1324 if (vs->sasl.conn && vs->sasl.runSSF)
1325 ret = vnc_client_read_sasl(vs);
1326 else
1327 #endif /* CONFIG_VNC_SASL */
1328 ret = vnc_client_read_plain(vs);
1329 if (!ret) {
1330 if (vs->csock == -1)
1331 vnc_disconnect_finish(vs);
1332 return;
1333 }
1334
1335 while (vs->read_handler && vs->input.offset >= vs->read_handler_expect) {
1336 size_t len = vs->read_handler_expect;
1337 int ret;
1338
1339 ret = vs->read_handler(vs, vs->input.buffer, len);
1340 if (vs->csock == -1) {
1341 vnc_disconnect_finish(vs);
1342 return;
1343 }
1344
1345 if (!ret) {
1346 memmove(vs->input.buffer, vs->input.buffer + len, (vs->input.offset - len));
1347 vs->input.offset -= len;
1348 } else {
1349 vs->read_handler_expect = ret;
1350 }
1351 }
1352 }
1353
1354 void vnc_write(VncState *vs, const void *data, size_t len)
1355 {
1356 buffer_reserve(&vs->output, len);
1357
1358 if (vs->csock != -1 && buffer_empty(&vs->output)) {
1359 qemu_set_fd_handler2(vs->csock, NULL, vnc_client_read, vnc_client_write, vs);
1360 }
1361
1362 buffer_append(&vs->output, data, len);
1363 }
1364
1365 void vnc_write_s32(VncState *vs, int32_t value)
1366 {
1367 vnc_write_u32(vs, *(uint32_t *)&value);
1368 }
1369
1370 void vnc_write_u32(VncState *vs, uint32_t value)
1371 {
1372 uint8_t buf[4];
1373
1374 buf[0] = (value >> 24) & 0xFF;
1375 buf[1] = (value >> 16) & 0xFF;
1376 buf[2] = (value >> 8) & 0xFF;
1377 buf[3] = value & 0xFF;
1378
1379 vnc_write(vs, buf, 4);
1380 }
1381
1382 void vnc_write_u16(VncState *vs, uint16_t value)
1383 {
1384 uint8_t buf[2];
1385
1386 buf[0] = (value >> 8) & 0xFF;
1387 buf[1] = value & 0xFF;
1388
1389 vnc_write(vs, buf, 2);
1390 }
1391
1392 void vnc_write_u8(VncState *vs, uint8_t value)
1393 {
1394 vnc_write(vs, (char *)&value, 1);
1395 }
1396
1397 void vnc_flush(VncState *vs)
1398 {
1399 if (vs->csock != -1 && vs->output.offset)
1400 vnc_client_write(vs);
1401 }
1402
1403 uint8_t read_u8(uint8_t *data, size_t offset)
1404 {
1405 return data[offset];
1406 }
1407
1408 uint16_t read_u16(uint8_t *data, size_t offset)
1409 {
1410 return ((data[offset] & 0xFF) << 8) | (data[offset + 1] & 0xFF);
1411 }
1412
1413 int32_t read_s32(uint8_t *data, size_t offset)
1414 {
1415 return (int32_t)((data[offset] << 24) | (data[offset + 1] << 16) |
1416 (data[offset + 2] << 8) | data[offset + 3]);
1417 }
1418
1419 uint32_t read_u32(uint8_t *data, size_t offset)
1420 {
1421 return ((data[offset] << 24) | (data[offset + 1] << 16) |
1422 (data[offset + 2] << 8) | data[offset + 3]);
1423 }
1424
1425 static void client_cut_text(VncState *vs, size_t len, uint8_t *text)
1426 {
1427 }
1428
1429 static void check_pointer_type_change(VncState *vs, int absolute)
1430 {
1431 if (vnc_has_feature(vs, VNC_FEATURE_POINTER_TYPE_CHANGE) && vs->absolute != absolute) {
1432 vnc_write_u8(vs, 0);
1433 vnc_write_u8(vs, 0);
1434 vnc_write_u16(vs, 1);
1435 vnc_framebuffer_update(vs, absolute, 0,
1436 ds_get_width(vs->ds), ds_get_height(vs->ds),
1437 VNC_ENCODING_POINTER_TYPE_CHANGE);
1438 vnc_flush(vs);
1439 }
1440 vs->absolute = absolute;
1441 }
1442
1443 static void pointer_event(VncState *vs, int button_mask, int x, int y)
1444 {
1445 int buttons = 0;
1446 int dz = 0;
1447
1448 if (button_mask & 0x01)
1449 buttons |= MOUSE_EVENT_LBUTTON;
1450 if (button_mask & 0x02)
1451 buttons |= MOUSE_EVENT_MBUTTON;
1452 if (button_mask & 0x04)
1453 buttons |= MOUSE_EVENT_RBUTTON;
1454 if (button_mask & 0x08)
1455 dz = -1;
1456 if (button_mask & 0x10)
1457 dz = 1;
1458
1459 if (vs->absolute) {
1460 kbd_mouse_event(x * 0x7FFF / (ds_get_width(vs->ds) - 1),
1461 y * 0x7FFF / (ds_get_height(vs->ds) - 1),
1462 dz, buttons);
1463 } else if (vnc_has_feature(vs, VNC_FEATURE_POINTER_TYPE_CHANGE)) {
1464 x -= 0x7FFF;
1465 y -= 0x7FFF;
1466
1467 kbd_mouse_event(x, y, dz, buttons);
1468 } else {
1469 if (vs->last_x != -1)
1470 kbd_mouse_event(x - vs->last_x,
1471 y - vs->last_y,
1472 dz, buttons);
1473 vs->last_x = x;
1474 vs->last_y = y;
1475 }
1476
1477 check_pointer_type_change(vs, kbd_mouse_is_absolute());
1478 }
1479
1480 static void reset_keys(VncState *vs)
1481 {
1482 int i;
1483 for(i = 0; i < 256; i++) {
1484 if (vs->modifiers_state[i]) {
1485 if (i & 0x80)
1486 kbd_put_keycode(0xe0);
1487 kbd_put_keycode(i | 0x80);
1488 vs->modifiers_state[i] = 0;
1489 }
1490 }
1491 }
1492
1493 static void press_key(VncState *vs, int keysym)
1494 {
1495 kbd_put_keycode(keysym2scancode(vs->vd->kbd_layout, keysym) & 0x7f);
1496 kbd_put_keycode(keysym2scancode(vs->vd->kbd_layout, keysym) | 0x80);
1497 }
1498
1499 static void do_key_event(VncState *vs, int down, int keycode, int sym)
1500 {
1501 /* QEMU console switch */
1502 switch(keycode) {
1503 case 0x2a: /* Left Shift */
1504 case 0x36: /* Right Shift */
1505 case 0x1d: /* Left CTRL */
1506 case 0x9d: /* Right CTRL */
1507 case 0x38: /* Left ALT */
1508 case 0xb8: /* Right ALT */
1509 if (down)
1510 vs->modifiers_state[keycode] = 1;
1511 else
1512 vs->modifiers_state[keycode] = 0;
1513 break;
1514 case 0x02 ... 0x0a: /* '1' to '9' keys */
1515 if (down && vs->modifiers_state[0x1d] && vs->modifiers_state[0x38]) {
1516 /* Reset the modifiers sent to the current console */
1517 reset_keys(vs);
1518 console_select(keycode - 0x02);
1519 return;
1520 }
1521 break;
1522 case 0x3a: /* CapsLock */
1523 case 0x45: /* NumLock */
1524 if (!down)
1525 vs->modifiers_state[keycode] ^= 1;
1526 break;
1527 }
1528
1529 if (keycode_is_keypad(vs->vd->kbd_layout, keycode)) {
1530 /* If the numlock state needs to change then simulate an additional
1531 keypress before sending this one. This will happen if the user
1532 toggles numlock away from the VNC window.
1533 */
1534 if (keysym_is_numlock(vs->vd->kbd_layout, sym & 0xFFFF)) {
1535 if (!vs->modifiers_state[0x45]) {
1536 vs->modifiers_state[0x45] = 1;
1537 press_key(vs, 0xff7f);
1538 }
1539 } else {
1540 if (vs->modifiers_state[0x45]) {
1541 vs->modifiers_state[0x45] = 0;
1542 press_key(vs, 0xff7f);
1543 }
1544 }
1545 }
1546
1547 if ((sym >= 'A' && sym <= 'Z') || (sym >= 'a' && sym <= 'z')) {
1548 /* If the capslock state needs to change then simulate an additional
1549 keypress before sending this one. This will happen if the user
1550 toggles capslock away from the VNC window.
1551 */
1552 int uppercase = !!(sym >= 'A' && sym <= 'Z');
1553 int shift = !!(vs->modifiers_state[0x2a] | vs->modifiers_state[0x36]);
1554 int capslock = !!(vs->modifiers_state[0x3a]);
1555 if (capslock) {
1556 if (uppercase == shift) {
1557 vs->modifiers_state[0x3a] = 0;
1558 press_key(vs, 0xffe5);
1559 }
1560 } else {
1561 if (uppercase != shift) {
1562 vs->modifiers_state[0x3a] = 1;
1563 press_key(vs, 0xffe5);
1564 }
1565 }
1566 }
1567
1568 if (is_graphic_console()) {
1569 if (keycode & 0x80)
1570 kbd_put_keycode(0xe0);
1571 if (down)
1572 kbd_put_keycode(keycode & 0x7f);
1573 else
1574 kbd_put_keycode(keycode | 0x80);
1575 } else {
1576 /* QEMU console emulation */
1577 if (down) {
1578 int numlock = vs->modifiers_state[0x45];
1579 switch (keycode) {
1580 case 0x2a: /* Left Shift */
1581 case 0x36: /* Right Shift */
1582 case 0x1d: /* Left CTRL */
1583 case 0x9d: /* Right CTRL */
1584 case 0x38: /* Left ALT */
1585 case 0xb8: /* Right ALT */
1586 break;
1587 case 0xc8:
1588 kbd_put_keysym(QEMU_KEY_UP);
1589 break;
1590 case 0xd0:
1591 kbd_put_keysym(QEMU_KEY_DOWN);
1592 break;
1593 case 0xcb:
1594 kbd_put_keysym(QEMU_KEY_LEFT);
1595 break;
1596 case 0xcd:
1597 kbd_put_keysym(QEMU_KEY_RIGHT);
1598 break;
1599 case 0xd3:
1600 kbd_put_keysym(QEMU_KEY_DELETE);
1601 break;
1602 case 0xc7:
1603 kbd_put_keysym(QEMU_KEY_HOME);
1604 break;
1605 case 0xcf:
1606 kbd_put_keysym(QEMU_KEY_END);
1607 break;
1608 case 0xc9:
1609 kbd_put_keysym(QEMU_KEY_PAGEUP);
1610 break;
1611 case 0xd1:
1612 kbd_put_keysym(QEMU_KEY_PAGEDOWN);
1613 break;
1614
1615 case 0x47:
1616 kbd_put_keysym(numlock ? '7' : QEMU_KEY_HOME);
1617 break;
1618 case 0x48:
1619 kbd_put_keysym(numlock ? '8' : QEMU_KEY_UP);
1620 break;
1621 case 0x49:
1622 kbd_put_keysym(numlock ? '9' : QEMU_KEY_PAGEUP);
1623 break;
1624 case 0x4b:
1625 kbd_put_keysym(numlock ? '4' : QEMU_KEY_LEFT);
1626 break;
1627 case 0x4c:
1628 kbd_put_keysym('5');
1629 break;
1630 case 0x4d:
1631 kbd_put_keysym(numlock ? '6' : QEMU_KEY_RIGHT);
1632 break;
1633 case 0x4f:
1634 kbd_put_keysym(numlock ? '1' : QEMU_KEY_END);
1635 break;
1636 case 0x50:
1637 kbd_put_keysym(numlock ? '2' : QEMU_KEY_DOWN);
1638 break;
1639 case 0x51:
1640 kbd_put_keysym(numlock ? '3' : QEMU_KEY_PAGEDOWN);
1641 break;
1642 case 0x52:
1643 kbd_put_keysym('0');
1644 break;
1645 case 0x53:
1646 kbd_put_keysym(numlock ? '.' : QEMU_KEY_DELETE);
1647 break;
1648
1649 case 0xb5:
1650 kbd_put_keysym('/');
1651 break;
1652 case 0x37:
1653 kbd_put_keysym('*');
1654 break;
1655 case 0x4a:
1656 kbd_put_keysym('-');
1657 break;
1658 case 0x4e:
1659 kbd_put_keysym('+');
1660 break;
1661 case 0x9c:
1662 kbd_put_keysym('\n');
1663 break;
1664
1665 default:
1666 kbd_put_keysym(sym);
1667 break;
1668 }
1669 }
1670 }
1671 }
1672
1673 static void key_event(VncState *vs, int down, uint32_t sym)
1674 {
1675 int keycode;
1676 int lsym = sym;
1677
1678 if (lsym >= 'A' && lsym <= 'Z' && is_graphic_console()) {
1679 lsym = lsym - 'A' + 'a';
1680 }
1681
1682 keycode = keysym2scancode(vs->vd->kbd_layout, lsym & 0xFFFF);
1683 do_key_event(vs, down, keycode, sym);
1684 }
1685
1686 static void ext_key_event(VncState *vs, int down,
1687 uint32_t sym, uint16_t keycode)
1688 {
1689 /* if the user specifies a keyboard layout, always use it */
1690 if (keyboard_layout)
1691 key_event(vs, down, sym);
1692 else
1693 do_key_event(vs, down, keycode, sym);
1694 }
1695
1696 static void framebuffer_update_request(VncState *vs, int incremental,
1697 int x_position, int y_position,
1698 int w, int h)
1699 {
1700 if (x_position > ds_get_width(vs->ds))
1701 x_position = ds_get_width(vs->ds);
1702 if (y_position > ds_get_height(vs->ds))
1703 y_position = ds_get_height(vs->ds);
1704 if (x_position + w >= ds_get_width(vs->ds))
1705 w = ds_get_width(vs->ds) - x_position;
1706 if (y_position + h >= ds_get_height(vs->ds))
1707 h = ds_get_height(vs->ds) - y_position;
1708
1709 int i;
1710 vs->need_update = 1;
1711 if (!incremental) {
1712 vs->force_update = 1;
1713 for (i = 0; i < h; i++) {
1714 vnc_set_bits(vs->dirty[y_position + i],
1715 (ds_get_width(vs->ds) / 16), VNC_DIRTY_WORDS);
1716 }
1717 }
1718 }
1719
1720 static void send_ext_key_event_ack(VncState *vs)
1721 {
1722 vnc_write_u8(vs, 0);
1723 vnc_write_u8(vs, 0);
1724 vnc_write_u16(vs, 1);
1725 vnc_framebuffer_update(vs, 0, 0, ds_get_width(vs->ds), ds_get_height(vs->ds),
1726 VNC_ENCODING_EXT_KEY_EVENT);
1727 vnc_flush(vs);
1728 }
1729
1730 static void send_ext_audio_ack(VncState *vs)
1731 {
1732 vnc_write_u8(vs, 0);
1733 vnc_write_u8(vs, 0);
1734 vnc_write_u16(vs, 1);
1735 vnc_framebuffer_update(vs, 0, 0, ds_get_width(vs->ds), ds_get_height(vs->ds),
1736 VNC_ENCODING_AUDIO);
1737 vnc_flush(vs);
1738 }
1739
1740 static void set_encodings(VncState *vs, int32_t *encodings, size_t n_encodings)
1741 {
1742 int i;
1743 unsigned int enc = 0;
1744
1745 vnc_zlib_init(vs);
1746 vs->features = 0;
1747 vs->vnc_encoding = 0;
1748 vs->tight_compression = 9;
1749 vs->tight_quality = 9;
1750 vs->absolute = -1;
1751
1752 for (i = n_encodings - 1; i >= 0; i--) {
1753 enc = encodings[i];
1754 switch (enc) {
1755 case VNC_ENCODING_RAW:
1756 vs->vnc_encoding = enc;
1757 break;
1758 case VNC_ENCODING_COPYRECT:
1759 vs->features |= VNC_FEATURE_COPYRECT_MASK;
1760 break;
1761 case VNC_ENCODING_HEXTILE:
1762 vs->features |= VNC_FEATURE_HEXTILE_MASK;
1763 vs->vnc_encoding = enc;
1764 break;
1765 case VNC_ENCODING_ZLIB:
1766 vs->features |= VNC_FEATURE_ZLIB_MASK;
1767 vs->vnc_encoding = enc;
1768 break;
1769 case VNC_ENCODING_DESKTOPRESIZE:
1770 vs->features |= VNC_FEATURE_RESIZE_MASK;
1771 break;
1772 case VNC_ENCODING_POINTER_TYPE_CHANGE:
1773 vs->features |= VNC_FEATURE_POINTER_TYPE_CHANGE_MASK;
1774 break;
1775 case VNC_ENCODING_EXT_KEY_EVENT:
1776 send_ext_key_event_ack(vs);
1777 break;
1778 case VNC_ENCODING_AUDIO:
1779 send_ext_audio_ack(vs);
1780 break;
1781 case VNC_ENCODING_WMVi:
1782 vs->features |= VNC_FEATURE_WMVI_MASK;
1783 break;
1784 case VNC_ENCODING_COMPRESSLEVEL0 ... VNC_ENCODING_COMPRESSLEVEL0 + 9:
1785 vs->tight_compression = (enc & 0x0F);
1786 break;
1787 case VNC_ENCODING_QUALITYLEVEL0 ... VNC_ENCODING_QUALITYLEVEL0 + 9:
1788 vs->tight_quality = (enc & 0x0F);
1789 break;
1790 default:
1791 VNC_DEBUG("Unknown encoding: %d (0x%.8x): %d\n", i, enc, enc);
1792 break;
1793 }
1794 }
1795
1796 check_pointer_type_change(vs, kbd_mouse_is_absolute());
1797 }
1798
1799 static void set_pixel_conversion(VncState *vs)
1800 {
1801 if ((vs->clientds.flags & QEMU_BIG_ENDIAN_FLAG) ==
1802 (vs->ds->surface->flags & QEMU_BIG_ENDIAN_FLAG) &&
1803 !memcmp(&(vs->clientds.pf), &(vs->ds->surface->pf), sizeof(PixelFormat))) {
1804 vs->write_pixels = vnc_write_pixels_copy;
1805 switch (vs->ds->surface->pf.bits_per_pixel) {
1806 case 8:
1807 vs->send_hextile_tile = send_hextile_tile_8;
1808 break;
1809 case 16:
1810 vs->send_hextile_tile = send_hextile_tile_16;
1811 break;
1812 case 32:
1813 vs->send_hextile_tile = send_hextile_tile_32;
1814 break;
1815 }
1816 } else {
1817 vs->write_pixels = vnc_write_pixels_generic;
1818 switch (vs->ds->surface->pf.bits_per_pixel) {
1819 case 8:
1820 vs->send_hextile_tile = send_hextile_tile_generic_8;
1821 break;
1822 case 16:
1823 vs->send_hextile_tile = send_hextile_tile_generic_16;
1824 break;
1825 case 32:
1826 vs->send_hextile_tile = send_hextile_tile_generic_32;
1827 break;
1828 }
1829 }
1830 }
1831
1832 static void set_pixel_format(VncState *vs,
1833 int bits_per_pixel, int depth,
1834 int big_endian_flag, int true_color_flag,
1835 int red_max, int green_max, int blue_max,
1836 int red_shift, int green_shift, int blue_shift)
1837 {
1838 if (!true_color_flag) {
1839 vnc_client_error(vs);
1840 return;
1841 }
1842
1843 vs->clientds = *(vs->vd->guest.ds);
1844 vs->clientds.pf.rmax = red_max;
1845 count_bits(vs->clientds.pf.rbits, red_max);
1846 vs->clientds.pf.rshift = red_shift;
1847 vs->clientds.pf.rmask = red_max << red_shift;
1848 vs->clientds.pf.gmax = green_max;
1849 count_bits(vs->clientds.pf.gbits, green_max);
1850 vs->clientds.pf.gshift = green_shift;
1851 vs->clientds.pf.gmask = green_max << green_shift;
1852 vs->clientds.pf.bmax = blue_max;
1853 count_bits(vs->clientds.pf.bbits, blue_max);
1854 vs->clientds.pf.bshift = blue_shift;
1855 vs->clientds.pf.bmask = blue_max << blue_shift;
1856 vs->clientds.pf.bits_per_pixel = bits_per_pixel;
1857 vs->clientds.pf.bytes_per_pixel = bits_per_pixel / 8;
1858 vs->clientds.pf.depth = bits_per_pixel == 32 ? 24 : bits_per_pixel;
1859 vs->clientds.flags = big_endian_flag ? QEMU_BIG_ENDIAN_FLAG : 0x00;
1860
1861 set_pixel_conversion(vs);
1862
1863 vga_hw_invalidate();
1864 vga_hw_update();
1865 }
1866
1867 static void pixel_format_message (VncState *vs) {
1868 char pad[3] = { 0, 0, 0 };
1869
1870 vnc_write_u8(vs, vs->ds->surface->pf.bits_per_pixel); /* bits-per-pixel */
1871 vnc_write_u8(vs, vs->ds->surface->pf.depth); /* depth */
1872
1873 #ifdef HOST_WORDS_BIGENDIAN
1874 vnc_write_u8(vs, 1); /* big-endian-flag */
1875 #else
1876 vnc_write_u8(vs, 0); /* big-endian-flag */
1877 #endif
1878 vnc_write_u8(vs, 1); /* true-color-flag */
1879 vnc_write_u16(vs, vs->ds->surface->pf.rmax); /* red-max */
1880 vnc_write_u16(vs, vs->ds->surface->pf.gmax); /* green-max */
1881 vnc_write_u16(vs, vs->ds->surface->pf.bmax); /* blue-max */
1882 vnc_write_u8(vs, vs->ds->surface->pf.rshift); /* red-shift */
1883 vnc_write_u8(vs, vs->ds->surface->pf.gshift); /* green-shift */
1884 vnc_write_u8(vs, vs->ds->surface->pf.bshift); /* blue-shift */
1885 if (vs->ds->surface->pf.bits_per_pixel == 32)
1886 vs->send_hextile_tile = send_hextile_tile_32;
1887 else if (vs->ds->surface->pf.bits_per_pixel == 16)
1888 vs->send_hextile_tile = send_hextile_tile_16;
1889 else if (vs->ds->surface->pf.bits_per_pixel == 8)
1890 vs->send_hextile_tile = send_hextile_tile_8;
1891 vs->clientds = *(vs->ds->surface);
1892 vs->clientds.flags &= ~QEMU_ALLOCATED_FLAG;
1893 vs->write_pixels = vnc_write_pixels_copy;
1894
1895 vnc_write(vs, pad, 3); /* padding */
1896 }
1897
1898 static void vnc_dpy_setdata(DisplayState *ds)
1899 {
1900 /* We don't have to do anything */
1901 }
1902
1903 static void vnc_colordepth(VncState *vs)
1904 {
1905 if (vnc_has_feature(vs, VNC_FEATURE_WMVI)) {
1906 /* Sending a WMVi message to notify the client*/
1907 vnc_write_u8(vs, 0); /* msg id */
1908 vnc_write_u8(vs, 0);
1909 vnc_write_u16(vs, 1); /* number of rects */
1910 vnc_framebuffer_update(vs, 0, 0, ds_get_width(vs->ds),
1911 ds_get_height(vs->ds), VNC_ENCODING_WMVi);
1912 pixel_format_message(vs);
1913 vnc_flush(vs);
1914 } else {
1915 set_pixel_conversion(vs);
1916 }
1917 }
1918
1919 static int protocol_client_msg(VncState *vs, uint8_t *data, size_t len)
1920 {
1921 int i;
1922 uint16_t limit;
1923 VncDisplay *vd = vs->vd;
1924
1925 if (data[0] > 3) {
1926 vd->timer_interval = VNC_REFRESH_INTERVAL_BASE;
1927 if (!qemu_timer_expired(vd->timer, qemu_get_clock(rt_clock) + vd->timer_interval))
1928 qemu_mod_timer(vd->timer, qemu_get_clock(rt_clock) + vd->timer_interval);
1929 }
1930
1931 switch (data[0]) {
1932 case 0:
1933 if (len == 1)
1934 return 20;
1935
1936 set_pixel_format(vs, read_u8(data, 4), read_u8(data, 5),
1937 read_u8(data, 6), read_u8(data, 7),
1938 read_u16(data, 8), read_u16(data, 10),
1939 read_u16(data, 12), read_u8(data, 14),
1940 read_u8(data, 15), read_u8(data, 16));
1941 break;
1942 case 2:
1943 if (len == 1)
1944 return 4;
1945
1946 if (len == 4) {
1947 limit = read_u16(data, 2);
1948 if (limit > 0)
1949 return 4 + (limit * 4);
1950 } else
1951 limit = read_u16(data, 2);
1952
1953 for (i = 0; i < limit; i++) {
1954 int32_t val = read_s32(data, 4 + (i * 4));
1955 memcpy(data + 4 + (i * 4), &val, sizeof(val));
1956 }
1957
1958 set_encodings(vs, (int32_t *)(data + 4), limit);
1959 break;
1960 case 3:
1961 if (len == 1)
1962 return 10;
1963
1964 framebuffer_update_request(vs,
1965 read_u8(data, 1), read_u16(data, 2), read_u16(data, 4),
1966 read_u16(data, 6), read_u16(data, 8));
1967 break;
1968 case 4:
1969 if (len == 1)
1970 return 8;
1971
1972 key_event(vs, read_u8(data, 1), read_u32(data, 4));
1973 break;
1974 case 5:
1975 if (len == 1)
1976 return 6;
1977
1978 pointer_event(vs, read_u8(data, 1), read_u16(data, 2), read_u16(data, 4));
1979 break;
1980 case 6:
1981 if (len == 1)
1982 return 8;
1983
1984 if (len == 8) {
1985 uint32_t dlen = read_u32(data, 4);
1986 if (dlen > 0)
1987 return 8 + dlen;
1988 }
1989
1990 client_cut_text(vs, read_u32(data, 4), data + 8);
1991 break;
1992 case 255:
1993 if (len == 1)
1994 return 2;
1995
1996 switch (read_u8(data, 1)) {
1997 case 0:
1998 if (len == 2)
1999 return 12;
2000
2001 ext_key_event(vs, read_u16(data, 2),
2002 read_u32(data, 4), read_u32(data, 8));
2003 break;
2004 case 1:
2005 if (len == 2)
2006 return 4;
2007
2008 switch (read_u16 (data, 2)) {
2009 case 0:
2010 audio_add(vs);
2011 break;
2012 case 1:
2013 audio_del(vs);
2014 break;
2015 case 2:
2016 if (len == 4)
2017 return 10;
2018 switch (read_u8(data, 4)) {
2019 case 0: vs->as.fmt = AUD_FMT_U8; break;
2020 case 1: vs->as.fmt = AUD_FMT_S8; break;
2021 case 2: vs->as.fmt = AUD_FMT_U16; break;
2022 case 3: vs->as.fmt = AUD_FMT_S16; break;
2023 case 4: vs->as.fmt = AUD_FMT_U32; break;
2024 case 5: vs->as.fmt = AUD_FMT_S32; break;
2025 default:
2026 printf("Invalid audio format %d\n", read_u8(data, 4));
2027 vnc_client_error(vs);
2028 break;
2029 }
2030 vs->as.nchannels = read_u8(data, 5);
2031 if (vs->as.nchannels != 1 && vs->as.nchannels != 2) {
2032 printf("Invalid audio channel coount %d\n",
2033 read_u8(data, 5));
2034 vnc_client_error(vs);
2035 break;
2036 }
2037 vs->as.freq = read_u32(data, 6);
2038 break;
2039 default:
2040 printf ("Invalid audio message %d\n", read_u8(data, 4));
2041 vnc_client_error(vs);
2042 break;
2043 }
2044 break;
2045
2046 default:
2047 printf("Msg: %d\n", read_u16(data, 0));
2048 vnc_client_error(vs);
2049 break;
2050 }
2051 break;
2052 default:
2053 printf("Msg: %d\n", data[0]);
2054 vnc_client_error(vs);
2055 break;
2056 }
2057
2058 vnc_read_when(vs, protocol_client_msg, 1);
2059 return 0;
2060 }
2061
2062 static int protocol_client_init(VncState *vs, uint8_t *data, size_t len)
2063 {
2064 char buf[1024];
2065 int size;
2066
2067 vnc_write_u16(vs, ds_get_width(vs->ds));
2068 vnc_write_u16(vs, ds_get_height(vs->ds));
2069
2070 pixel_format_message(vs);
2071
2072 if (qemu_name)
2073 size = snprintf(buf, sizeof(buf), "QEMU (%s)", qemu_name);
2074 else
2075 size = snprintf(buf, sizeof(buf), "QEMU");
2076
2077 vnc_write_u32(vs, size);
2078 vnc_write(vs, buf, size);
2079 vnc_flush(vs);
2080
2081 vnc_client_cache_auth(vs);
2082 vnc_qmp_event(vs, QEVENT_VNC_INITIALIZED);
2083
2084 vnc_read_when(vs, protocol_client_msg, 1);
2085
2086 return 0;
2087 }
2088
2089 void start_client_init(VncState *vs)
2090 {
2091 vnc_read_when(vs, protocol_client_init, 1);
2092 }
2093
2094 static void make_challenge(VncState *vs)
2095 {
2096 int i;
2097
2098 srand(time(NULL)+getpid()+getpid()*987654+rand());
2099
2100 for (i = 0 ; i < sizeof(vs->challenge) ; i++)
2101 vs->challenge[i] = (int) (256.0*rand()/(RAND_MAX+1.0));
2102 }
2103
2104 static int protocol_client_auth_vnc(VncState *vs, uint8_t *data, size_t len)
2105 {
2106 unsigned char response[VNC_AUTH_CHALLENGE_SIZE];
2107 int i, j, pwlen;
2108 unsigned char key[8];
2109
2110 if (!vs->vd->password || !vs->vd->password[0]) {
2111 VNC_DEBUG("No password configured on server");
2112 vnc_write_u32(vs, 1); /* Reject auth */
2113 if (vs->minor >= 8) {
2114 static const char err[] = "Authentication failed";
2115 vnc_write_u32(vs, sizeof(err));
2116 vnc_write(vs, err, sizeof(err));
2117 }
2118 vnc_flush(vs);
2119 vnc_client_error(vs);
2120 return 0;
2121 }
2122
2123 memcpy(response, vs->challenge, VNC_AUTH_CHALLENGE_SIZE);
2124
2125 /* Calculate the expected challenge response */
2126 pwlen = strlen(vs->vd->password);
2127 for (i=0; i<sizeof(key); i++)
2128 key[i] = i<pwlen ? vs->vd->password[i] : 0;
2129 deskey(key, EN0);
2130 for (j = 0; j < VNC_AUTH_CHALLENGE_SIZE; j += 8)
2131 des(response+j, response+j);
2132
2133 /* Compare expected vs actual challenge response */
2134 if (memcmp(response, data, VNC_AUTH_CHALLENGE_SIZE) != 0) {
2135 VNC_DEBUG("Client challenge reponse did not match\n");
2136 vnc_write_u32(vs, 1); /* Reject auth */
2137 if (vs->minor >= 8) {
2138 static const char err[] = "Authentication failed";
2139 vnc_write_u32(vs, sizeof(err));
2140 vnc_write(vs, err, sizeof(err));
2141 }
2142 vnc_flush(vs);
2143 vnc_client_error(vs);
2144 } else {
2145 VNC_DEBUG("Accepting VNC challenge response\n");
2146 vnc_write_u32(vs, 0); /* Accept auth */
2147 vnc_flush(vs);
2148
2149 start_client_init(vs);
2150 }
2151 return 0;
2152 }
2153
2154 void start_auth_vnc(VncState *vs)
2155 {
2156 make_challenge(vs);
2157 /* Send client a 'random' challenge */
2158 vnc_write(vs, vs->challenge, sizeof(vs->challenge));
2159 vnc_flush(vs);
2160
2161 vnc_read_when(vs, protocol_client_auth_vnc, sizeof(vs->challenge));
2162 }
2163
2164
2165 static int protocol_client_auth(VncState *vs, uint8_t *data, size_t len)
2166 {
2167 /* We only advertise 1 auth scheme at a time, so client
2168 * must pick the one we sent. Verify this */
2169 if (data[0] != vs->vd->auth) { /* Reject auth */
2170 VNC_DEBUG("Reject auth %d because it didn't match advertized\n", (int)data[0]);
2171 vnc_write_u32(vs, 1);
2172 if (vs->minor >= 8) {
2173 static const char err[] = "Authentication failed";
2174 vnc_write_u32(vs, sizeof(err));
2175 vnc_write(vs, err, sizeof(err));
2176 }
2177 vnc_client_error(vs);
2178 } else { /* Accept requested auth */
2179 VNC_DEBUG("Client requested auth %d\n", (int)data[0]);
2180 switch (vs->vd->auth) {
2181 case VNC_AUTH_NONE:
2182 VNC_DEBUG("Accept auth none\n");
2183 if (vs->minor >= 8) {
2184 vnc_write_u32(vs, 0); /* Accept auth completion */
2185 vnc_flush(vs);
2186 }
2187 start_client_init(vs);
2188 break;
2189
2190 case VNC_AUTH_VNC:
2191 VNC_DEBUG("Start VNC auth\n");
2192 start_auth_vnc(vs);
2193 break;
2194
2195 #ifdef CONFIG_VNC_TLS
2196 case VNC_AUTH_VENCRYPT:
2197 VNC_DEBUG("Accept VeNCrypt auth\n");;
2198 start_auth_vencrypt(vs);
2199 break;
2200 #endif /* CONFIG_VNC_TLS */
2201
2202 #ifdef CONFIG_VNC_SASL
2203 case VNC_AUTH_SASL:
2204 VNC_DEBUG("Accept SASL auth\n");
2205 start_auth_sasl(vs);
2206 break;
2207 #endif /* CONFIG_VNC_SASL */
2208
2209 default: /* Should not be possible, but just in case */
2210 VNC_DEBUG("Reject auth %d server code bug\n", vs->vd->auth);
2211 vnc_write_u8(vs, 1);
2212 if (vs->minor >= 8) {
2213 static const char err[] = "Authentication failed";
2214 vnc_write_u32(vs, sizeof(err));
2215 vnc_write(vs, err, sizeof(err));
2216 }
2217 vnc_client_error(vs);
2218 }
2219 }
2220 return 0;
2221 }
2222
2223 static int protocol_version(VncState *vs, uint8_t *version, size_t len)
2224 {
2225 char local[13];
2226
2227 memcpy(local, version, 12);
2228 local[12] = 0;
2229
2230 if (sscanf(local, "RFB %03d.%03d\n", &vs->major, &vs->minor) != 2) {
2231 VNC_DEBUG("Malformed protocol version %s\n", local);
2232 vnc_client_error(vs);
2233 return 0;
2234 }
2235 VNC_DEBUG("Client request protocol version %d.%d\n", vs->major, vs->minor);
2236 if (vs->major != 3 ||
2237 (vs->minor != 3 &&
2238 vs->minor != 4 &&
2239 vs->minor != 5 &&
2240 vs->minor != 7 &&
2241 vs->minor != 8)) {
2242 VNC_DEBUG("Unsupported client version\n");
2243 vnc_write_u32(vs, VNC_AUTH_INVALID);
2244 vnc_flush(vs);
2245 vnc_client_error(vs);
2246 return 0;
2247 }
2248 /* Some broken clients report v3.4 or v3.5, which spec requires to be treated
2249 * as equivalent to v3.3 by servers
2250 */
2251 if (vs->minor == 4 || vs->minor == 5)
2252 vs->minor = 3;
2253
2254 if (vs->minor == 3) {
2255 if (vs->vd->auth == VNC_AUTH_NONE) {
2256 VNC_DEBUG("Tell client auth none\n");
2257 vnc_write_u32(vs, vs->vd->auth);
2258 vnc_flush(vs);
2259 start_client_init(vs);
2260 } else if (vs->vd->auth == VNC_AUTH_VNC) {
2261 VNC_DEBUG("Tell client VNC auth\n");
2262 vnc_write_u32(vs, vs->vd->auth);
2263 vnc_flush(vs);
2264 start_auth_vnc(vs);
2265 } else {
2266 VNC_DEBUG("Unsupported auth %d for protocol 3.3\n", vs->vd->auth);
2267 vnc_write_u32(vs, VNC_AUTH_INVALID);
2268 vnc_flush(vs);
2269 vnc_client_error(vs);
2270 }
2271 } else {
2272 VNC_DEBUG("Telling client we support auth %d\n", vs->vd->auth);
2273 vnc_write_u8(vs, 1); /* num auth */
2274 vnc_write_u8(vs, vs->vd->auth);
2275 vnc_read_when(vs, protocol_client_auth, 1);
2276 vnc_flush(vs);
2277 }
2278
2279 return 0;
2280 }
2281
2282 static int vnc_refresh_server_surface(VncDisplay *vd)
2283 {
2284 int y;
2285 uint8_t *guest_row;
2286 uint8_t *server_row;
2287 int cmp_bytes;
2288 uint32_t width_mask[VNC_DIRTY_WORDS];
2289 VncState *vs;
2290 int has_dirty = 0;
2291
2292 /*
2293 * Walk through the guest dirty map.
2294 * Check and copy modified bits from guest to server surface.
2295 * Update server dirty map.
2296 */
2297 vnc_set_bits(width_mask, (ds_get_width(vd->ds) / 16), VNC_DIRTY_WORDS);
2298 cmp_bytes = 16 * ds_get_bytes_per_pixel(vd->ds);
2299 guest_row = vd->guest.ds->data;
2300 server_row = vd->server->data;
2301 for (y = 0; y < vd->guest.ds->height; y++) {
2302 if (vnc_and_bits(vd->guest.dirty[y], width_mask, VNC_DIRTY_WORDS)) {
2303 int x;
2304 uint8_t *guest_ptr;
2305 uint8_t *server_ptr;
2306
2307 guest_ptr = guest_row;
2308 server_ptr = server_row;
2309
2310 for (x = 0; x < vd->guest.ds->width;
2311 x += 16, guest_ptr += cmp_bytes, server_ptr += cmp_bytes) {
2312 if (!vnc_get_bit(vd->guest.dirty[y], (x / 16)))
2313 continue;
2314 vnc_clear_bit(vd->guest.dirty[y], (x / 16));
2315 if (memcmp(server_ptr, guest_ptr, cmp_bytes) == 0)
2316 continue;
2317 memcpy(server_ptr, guest_ptr, cmp_bytes);
2318 QTAILQ_FOREACH(vs, &vd->clients, next) {
2319 vnc_set_bit(vs->dirty[y], (x / 16));
2320 }
2321 has_dirty++;
2322 }
2323 }
2324 guest_row += ds_get_linesize(vd->ds);
2325 server_row += ds_get_linesize(vd->ds);
2326 }
2327 return has_dirty;
2328 }
2329
2330 static void vnc_refresh(void *opaque)
2331 {
2332 VncDisplay *vd = opaque;
2333 VncState *vs, *vn;
2334 int has_dirty, rects = 0;
2335
2336 vga_hw_update();
2337
2338 has_dirty = vnc_refresh_server_surface(vd);
2339
2340 QTAILQ_FOREACH_SAFE(vs, &vd->clients, next, vn) {
2341 rects += vnc_update_client(vs, has_dirty);
2342 /* vs might be free()ed here */
2343 }
2344 /* vd->timer could be NULL now if the last client disconnected,
2345 * in this case don't update the timer */
2346 if (vd->timer == NULL)
2347 return;
2348
2349 if (has_dirty && rects) {
2350 vd->timer_interval /= 2;
2351 if (vd->timer_interval < VNC_REFRESH_INTERVAL_BASE)
2352 vd->timer_interval = VNC_REFRESH_INTERVAL_BASE;
2353 } else {
2354 vd->timer_interval += VNC_REFRESH_INTERVAL_INC;
2355 if (vd->timer_interval > VNC_REFRESH_INTERVAL_MAX)
2356 vd->timer_interval = VNC_REFRESH_INTERVAL_MAX;
2357 }
2358 qemu_mod_timer(vd->timer, qemu_get_clock(rt_clock) + vd->timer_interval);
2359 }
2360
2361 static void vnc_init_timer(VncDisplay *vd)
2362 {
2363 vd->timer_interval = VNC_REFRESH_INTERVAL_BASE;
2364 if (vd->timer == NULL && !QTAILQ_EMPTY(&vd->clients)) {
2365 vd->timer = qemu_new_timer(rt_clock, vnc_refresh, vd);
2366 vnc_refresh(vd);
2367 }
2368 }
2369
2370 static void vnc_remove_timer(VncDisplay *vd)
2371 {
2372 if (vd->timer != NULL && QTAILQ_EMPTY(&vd->clients)) {
2373 qemu_del_timer(vd->timer);
2374 qemu_free_timer(vd->timer);
2375 vd->timer = NULL;
2376 }
2377 }
2378
2379 static void vnc_connect(VncDisplay *vd, int csock)
2380 {
2381 VncState *vs = qemu_mallocz(sizeof(VncState));
2382 vs->csock = csock;
2383
2384 VNC_DEBUG("New client on socket %d\n", csock);
2385 dcl->idle = 0;
2386 socket_set_nonblock(vs->csock);
2387 qemu_set_fd_handler2(vs->csock, NULL, vnc_client_read, NULL, vs);
2388
2389 vnc_client_cache_addr(vs);
2390 vnc_qmp_event(vs, QEVENT_VNC_CONNECTED);
2391
2392 vs->vd = vd;
2393 vs->ds = vd->ds;
2394 vs->last_x = -1;
2395 vs->last_y = -1;
2396
2397 vs->as.freq = 44100;
2398 vs->as.nchannels = 2;
2399 vs->as.fmt = AUD_FMT_S16;
2400 vs->as.endianness = 0;
2401
2402 QTAILQ_INSERT_HEAD(&vd->clients, vs, next);
2403
2404 vga_hw_update();
2405
2406 vnc_write(vs, "RFB 003.008\n", 12);
2407 vnc_flush(vs);
2408 vnc_read_when(vs, protocol_version, 12);
2409 reset_keys(vs);
2410
2411 vnc_init_timer(vd);
2412
2413 /* vs might be free()ed here */
2414 }
2415
2416 static void vnc_listen_read(void *opaque)
2417 {
2418 VncDisplay *vs = opaque;
2419 struct sockaddr_in addr;
2420 socklen_t addrlen = sizeof(addr);
2421
2422 /* Catch-up */
2423 vga_hw_update();
2424
2425 int csock = qemu_accept(vs->lsock, (struct sockaddr *)&addr, &addrlen);
2426 if (csock != -1) {
2427 vnc_connect(vs, csock);
2428 }
2429 }
2430
2431 void vnc_display_init(DisplayState *ds)
2432 {
2433 VncDisplay *vs = qemu_mallocz(sizeof(*vs));
2434
2435 dcl = qemu_mallocz(sizeof(DisplayChangeListener));
2436
2437 ds->opaque = vs;
2438 dcl->idle = 1;
2439 vnc_display = vs;
2440
2441 vs->lsock = -1;
2442
2443 vs->ds = ds;
2444 QTAILQ_INIT(&vs->clients);
2445
2446 if (keyboard_layout)
2447 vs->kbd_layout = init_keyboard_layout(name2keysym, keyboard_layout);
2448 else
2449 vs->kbd_layout = init_keyboard_layout(name2keysym, "en-us");
2450
2451 if (!vs->kbd_layout)
2452 exit(1);
2453
2454 dcl->dpy_copy = vnc_dpy_copy;
2455 dcl->dpy_update = vnc_dpy_update;
2456 dcl->dpy_resize = vnc_dpy_resize;
2457 dcl->dpy_setdata = vnc_dpy_setdata;
2458 register_displaychangelistener(ds, dcl);
2459 }
2460
2461
2462 void vnc_display_close(DisplayState *ds)
2463 {
2464 VncDisplay *vs = ds ? (VncDisplay *)ds->opaque : vnc_display;
2465
2466 if (!vs)
2467 return;
2468 if (vs->display) {
2469 qemu_free(vs->display);
2470 vs->display = NULL;
2471 }
2472 if (vs->lsock != -1) {
2473 qemu_set_fd_handler2(vs->lsock, NULL, NULL, NULL, NULL);
2474 close(vs->lsock);
2475 vs->lsock = -1;
2476 }
2477 vs->auth = VNC_AUTH_INVALID;
2478 #ifdef CONFIG_VNC_TLS
2479 vs->subauth = VNC_AUTH_INVALID;
2480 vs->tls.x509verify = 0;
2481 #endif
2482 }
2483
2484 int vnc_display_password(DisplayState *ds, const char *password)
2485 {
2486 VncDisplay *vs = ds ? (VncDisplay *)ds->opaque : vnc_display;
2487
2488 if (!vs) {
2489 return -1;
2490 }
2491
2492 if (vs->password) {
2493 qemu_free(vs->password);
2494 vs->password = NULL;
2495 }
2496 if (password && password[0]) {
2497 if (!(vs->password = qemu_strdup(password)))
2498 return -1;
2499 if (vs->auth == VNC_AUTH_NONE) {
2500 vs->auth = VNC_AUTH_VNC;
2501 }
2502 } else {
2503 vs->auth = VNC_AUTH_NONE;
2504 }
2505
2506 return 0;
2507 }
2508
2509 char *vnc_display_local_addr(DisplayState *ds)
2510 {
2511 VncDisplay *vs = ds ? (VncDisplay *)ds->opaque : vnc_display;
2512
2513 return vnc_socket_local_addr("%s:%s", vs->lsock);
2514 }
2515
2516 int vnc_display_open(DisplayState *ds, const char *display)
2517 {
2518 VncDisplay *vs = ds ? (VncDisplay *)ds->opaque : vnc_display;
2519 const char *options;
2520 int password = 0;
2521 int reverse = 0;
2522 #ifdef CONFIG_VNC_TLS
2523 int tls = 0, x509 = 0;
2524 #endif
2525 #ifdef CONFIG_VNC_SASL
2526 int sasl = 0;
2527 int saslErr;
2528 #endif
2529 int acl = 0;
2530
2531 if (!vnc_display)
2532 return -1;
2533 vnc_display_close(ds);
2534 if (strcmp(display, "none") == 0)
2535 return 0;
2536
2537 if (!(vs->display = strdup(display)))
2538 return -1;
2539
2540 options = display;
2541 while ((options = strchr(options, ','))) {
2542 options++;
2543 if (strncmp(options, "password", 8) == 0) {
2544 password = 1; /* Require password auth */
2545 } else if (strncmp(options, "reverse", 7) == 0) {
2546 reverse = 1;
2547 #ifdef CONFIG_VNC_SASL
2548 } else if (strncmp(options, "sasl", 4) == 0) {
2549 sasl = 1; /* Require SASL auth */
2550 #endif
2551 #ifdef CONFIG_VNC_TLS
2552 } else if (strncmp(options, "tls", 3) == 0) {
2553 tls = 1; /* Require TLS */
2554 } else if (strncmp(options, "x509", 4) == 0) {
2555 char *start, *end;
2556 x509 = 1; /* Require x509 certificates */
2557 if (strncmp(options, "x509verify", 10) == 0)
2558 vs->tls.x509verify = 1; /* ...and verify client certs */
2559
2560 /* Now check for 'x509=/some/path' postfix
2561 * and use that to setup x509 certificate/key paths */
2562 start = strchr(options, '=');
2563 end = strchr(options, ',');
2564 if (start && (!end || (start < end))) {
2565 int len = end ? end-(start+1) : strlen(start+1);
2566 char *path = qemu_strndup(start + 1, len);
2567
2568 VNC_DEBUG("Trying certificate path '%s'\n", path);
2569 if (vnc_tls_set_x509_creds_dir(vs, path) < 0) {
2570 fprintf(stderr, "Failed to find x509 certificates/keys in %s\n", path);
2571 qemu_free(path);
2572 qemu_free(vs->display);
2573 vs->display = NULL;
2574 return -1;
2575 }
2576 qemu_free(path);
2577 } else {
2578 fprintf(stderr, "No certificate path provided\n");
2579 qemu_free(vs->display);
2580 vs->display = NULL;
2581 return -1;
2582 }
2583 #endif
2584 } else if (strncmp(options, "acl", 3) == 0) {
2585 acl = 1;
2586 }
2587 }
2588
2589 #ifdef CONFIG_VNC_TLS
2590 if (acl && x509 && vs->tls.x509verify) {
2591 if (!(vs->tls.acl = qemu_acl_init("vnc.x509dname"))) {
2592 fprintf(stderr, "Failed to create x509 dname ACL\n");
2593 exit(1);
2594 }
2595 }
2596 #endif
2597 #ifdef CONFIG_VNC_SASL
2598 if (acl && sasl) {
2599 if (!(vs->sasl.acl = qemu_acl_init("vnc.username"))) {
2600 fprintf(stderr, "Failed to create username ACL\n");
2601 exit(1);
2602 }
2603 }
2604 #endif
2605
2606 /*
2607 * Combinations we support here:
2608 *
2609 * - no-auth (clear text, no auth)
2610 * - password (clear text, weak auth)
2611 * - sasl (encrypt, good auth *IF* using Kerberos via GSSAPI)
2612 * - tls (encrypt, weak anonymous creds, no auth)
2613 * - tls + password (encrypt, weak anonymous creds, weak auth)
2614 * - tls + sasl (encrypt, weak anonymous creds, good auth)
2615 * - tls + x509 (encrypt, good x509 creds, no auth)
2616 * - tls + x509 + password (encrypt, good x509 creds, weak auth)
2617 * - tls + x509 + sasl (encrypt, good x509 creds, good auth)
2618 *
2619 * NB1. TLS is a stackable auth scheme.
2620 * NB2. the x509 schemes have option to validate a client cert dname
2621 */
2622 if (password) {
2623 #ifdef CONFIG_VNC_TLS
2624 if (tls) {
2625 vs->auth = VNC_AUTH_VENCRYPT;
2626 if (x509) {
2627 VNC_DEBUG("Initializing VNC server with x509 password auth\n");
2628 vs->subauth = VNC_AUTH_VENCRYPT_X509VNC;
2629 } else {
2630 VNC_DEBUG("Initializing VNC server with TLS password auth\n");
2631 vs->subauth = VNC_AUTH_VENCRYPT_TLSVNC;
2632 }
2633 } else {
2634 #endif /* CONFIG_VNC_TLS */
2635 VNC_DEBUG("Initializing VNC server with password auth\n");
2636 vs->auth = VNC_AUTH_VNC;
2637 #ifdef CONFIG_VNC_TLS
2638 vs->subauth = VNC_AUTH_INVALID;
2639 }
2640 #endif /* CONFIG_VNC_TLS */
2641 #ifdef CONFIG_VNC_SASL
2642 } else if (sasl) {
2643 #ifdef CONFIG_VNC_TLS
2644 if (tls) {
2645 vs->auth = VNC_AUTH_VENCRYPT;
2646 if (x509) {
2647 VNC_DEBUG("Initializing VNC server with x509 SASL auth\n");
2648 vs->subauth = VNC_AUTH_VENCRYPT_X509SASL;
2649 } else {
2650 VNC_DEBUG("Initializing VNC server with TLS SASL auth\n");
2651 vs->subauth = VNC_AUTH_VENCRYPT_TLSSASL;
2652 }
2653 } else {
2654 #endif /* CONFIG_VNC_TLS */
2655 VNC_DEBUG("Initializing VNC server with SASL auth\n");
2656 vs->auth = VNC_AUTH_SASL;
2657 #ifdef CONFIG_VNC_TLS
2658 vs->subauth = VNC_AUTH_INVALID;
2659 }
2660 #endif /* CONFIG_VNC_TLS */
2661 #endif /* CONFIG_VNC_SASL */
2662 } else {
2663 #ifdef CONFIG_VNC_TLS
2664 if (tls) {
2665 vs->auth = VNC_AUTH_VENCRYPT;
2666 if (x509) {
2667 VNC_DEBUG("Initializing VNC server with x509 no auth\n");
2668 vs->subauth = VNC_AUTH_VENCRYPT_X509NONE;
2669 } else {
2670 VNC_DEBUG("Initializing VNC server with TLS no auth\n");
2671 vs->subauth = VNC_AUTH_VENCRYPT_TLSNONE;
2672 }
2673 } else {
2674 #endif
2675 VNC_DEBUG("Initializing VNC server with no auth\n");
2676 vs->auth = VNC_AUTH_NONE;
2677 #ifdef CONFIG_VNC_TLS
2678 vs->subauth = VNC_AUTH_INVALID;
2679 }
2680 #endif
2681 }
2682
2683 #ifdef CONFIG_VNC_SASL
2684 if ((saslErr = sasl_server_init(NULL, "qemu")) != SASL_OK) {
2685 fprintf(stderr, "Failed to initialize SASL auth %s",
2686 sasl_errstring(saslErr, NULL, NULL));
2687 free(vs->display);
2688 vs->display = NULL;
2689 return -1;
2690 }
2691 #endif
2692
2693 if (reverse) {
2694 /* connect to viewer */
2695 if (strncmp(display, "unix:", 5) == 0)
2696 vs->lsock = unix_connect(display+5);
2697 else
2698 vs->lsock = inet_connect(display, SOCK_STREAM);
2699 if (-1 == vs->lsock) {
2700 free(vs->display);
2701 vs->display = NULL;
2702 return -1;
2703 } else {
2704 int csock = vs->lsock;
2705 vs->lsock = -1;
2706 vnc_connect(vs, csock);
2707 }
2708 return 0;
2709
2710 } else {
2711 /* listen for connects */
2712 char *dpy;
2713 dpy = qemu_malloc(256);
2714 if (strncmp(display, "unix:", 5) == 0) {
2715 pstrcpy(dpy, 256, "unix:");
2716 vs->lsock = unix_listen(display+5, dpy+5, 256-5);
2717 } else {
2718 vs->lsock = inet_listen(display, dpy, 256, SOCK_STREAM, 5900);
2719 }
2720 if (-1 == vs->lsock) {
2721 free(dpy);
2722 return -1;
2723 } else {
2724 free(vs->display);
2725 vs->display = dpy;
2726 }
2727 }
2728 return qemu_set_fd_handler2(vs->lsock, NULL, vnc_listen_read, NULL, vs);
2729 }
Stefan Hajnoczi's patches