2 * QEMU VNC display driver
5 * Copyright (C) 2006 Fabrice Bellard
6 * Copyright (C) 2009 Red Hat, Inc
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:
15 * The above copyright notice and this permission notice shall be included in
16 * all copies or substantial portions of the Software.
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
30 #include "qemu-common.h"
31 #include "qemu-queue.h"
34 #include "audio/audio.h"
40 // #define _VNC_DEBUG 1
43 #define VNC_DEBUG(fmt, ...) do { fprintf(stderr, fmt, ## __VA_ARGS__); } while (0)
45 #define VNC_DEBUG(fmt, ...) do { } while (0)
48 /*****************************************************************************
50 * Core data structures
52 *****************************************************************************/
61 typedef struct VncState VncState;
63 typedef int VncReadEvent(VncState *vs, uint8_t *data, size_t len);
65 typedef void VncWritePixels(VncState *vs, struct PixelFormat *pf, void *data, int size);
67 typedef void VncSendHextileTile(VncState *vs,
68 int x, int y, int w, int h,
71 int *has_bg, int *has_fg);
73 #define VNC_MAX_WIDTH 2560
74 #define VNC_MAX_HEIGHT 2048
75 #define VNC_DIRTY_WORDS (VNC_MAX_WIDTH / (16 * 32))
77 #define VNC_AUTH_CHALLENGE_SIZE 16
79 typedef struct VncDisplay VncDisplay;
83 #include "vnc-auth-vencrypt.h"
85 #ifdef CONFIG_VNC_SASL
86 #include "vnc-auth-sasl.h"
91 uint32_t dirty[VNC_MAX_HEIGHT][VNC_DIRTY_WORDS];
97 QTAILQ_HEAD(, VncState) clients;
102 kbd_layout_t *kbd_layout;
107 uint8_t *cursor_mask;
109 struct VncSurface guest; /* guest visible surface (aka ds->surface) */
110 DisplaySurface *server; /* vnc server surface */
116 #ifdef CONFIG_VNC_TLS
117 int subauth; /* Used by VeNCrypt */
120 #ifdef CONFIG_VNC_SASL
125 typedef struct VncTight {
134 #ifdef CONFIG_VNC_JPEG
137 #ifdef CONFIG_VNC_PNG
144 typedef struct VncHextile {
145 VncSendHextileTile *send_tile;
148 typedef struct VncZlib {
160 uint32_t dirty[VNC_MAX_HEIGHT][VNC_DIRTY_WORDS];
172 uint32_t vnc_encoding;
177 char challenge[VNC_AUTH_CHALLENGE_SIZE];
178 #ifdef CONFIG_VNC_TLS
181 #ifdef CONFIG_VNC_SASL
189 /* current output mode information */
190 VncWritePixels *write_pixels;
191 DisplaySurface clientds;
193 CaptureVoiceOut *audio_cap;
194 struct audsettings as;
196 VncReadEvent *read_handler;
197 size_t read_handler_expect;
199 uint8_t modifiers_state[256];
200 QEMUPutLEDEntry *led;
202 /* Encoding specific */
208 Notifier mouse_mode_notifier;
210 QTAILQ_ENTRY(VncState) next;
214 /*****************************************************************************
216 * Authentication modes
218 *****************************************************************************/
221 VNC_AUTH_INVALID = 0,
228 VNC_AUTH_TLS = 18, /* Supported in GTK-VNC & VINO */
229 VNC_AUTH_VENCRYPT = 19, /* Supported in GTK-VNC & VeNCrypt */
230 VNC_AUTH_SASL = 20, /* Supported in GTK-VNC & VINO */
234 VNC_AUTH_VENCRYPT_PLAIN = 256,
235 VNC_AUTH_VENCRYPT_TLSNONE = 257,
236 VNC_AUTH_VENCRYPT_TLSVNC = 258,
237 VNC_AUTH_VENCRYPT_TLSPLAIN = 259,
238 VNC_AUTH_VENCRYPT_X509NONE = 260,
239 VNC_AUTH_VENCRYPT_X509VNC = 261,
240 VNC_AUTH_VENCRYPT_X509PLAIN = 262,
241 VNC_AUTH_VENCRYPT_X509SASL = 263,
242 VNC_AUTH_VENCRYPT_TLSSASL = 264,
246 /*****************************************************************************
250 *****************************************************************************/
252 #define VNC_ENCODING_RAW 0x00000000
253 #define VNC_ENCODING_COPYRECT 0x00000001
254 #define VNC_ENCODING_RRE 0x00000002
255 #define VNC_ENCODING_CORRE 0x00000004
256 #define VNC_ENCODING_HEXTILE 0x00000005
257 #define VNC_ENCODING_ZLIB 0x00000006
258 #define VNC_ENCODING_TIGHT 0x00000007
259 #define VNC_ENCODING_ZLIBHEX 0x00000008
260 #define VNC_ENCODING_TRLE 0x0000000f
261 #define VNC_ENCODING_ZRLE 0x00000010
262 #define VNC_ENCODING_ZYWRLE 0x00000011
263 #define VNC_ENCODING_COMPRESSLEVEL0 0xFFFFFF00 /* -256 */
264 #define VNC_ENCODING_QUALITYLEVEL0 0xFFFFFFE0 /* -32 */
265 #define VNC_ENCODING_XCURSOR 0xFFFFFF10 /* -240 */
266 #define VNC_ENCODING_RICH_CURSOR 0xFFFFFF11 /* -239 */
267 #define VNC_ENCODING_POINTER_POS 0xFFFFFF18 /* -232 */
268 #define VNC_ENCODING_LASTRECT 0xFFFFFF20 /* -224 */
269 #define VNC_ENCODING_DESKTOPRESIZE 0xFFFFFF21 /* -223 */
270 #define VNC_ENCODING_POINTER_TYPE_CHANGE 0XFFFFFEFF /* -257 */
271 #define VNC_ENCODING_EXT_KEY_EVENT 0XFFFFFEFE /* -258 */
272 #define VNC_ENCODING_AUDIO 0XFFFFFEFD /* -259 */
273 #define VNC_ENCODING_TIGHT_PNG 0xFFFFFEFC /* -260 */
274 #define VNC_ENCODING_WMVi 0x574D5669
276 /*****************************************************************************
278 * Other tight constants
280 *****************************************************************************/
283 * Vendors known by TightVNC: standard VNC/RealVNC, TridiaVNC, and TightVNC.
286 #define VNC_TIGHT_CCB_RESET_MASK (0x0f)
287 #define VNC_TIGHT_CCB_TYPE_MASK (0x0f << 4)
288 #define VNC_TIGHT_CCB_TYPE_FILL (0x08 << 4)
289 #define VNC_TIGHT_CCB_TYPE_JPEG (0x09 << 4)
290 #define VNC_TIGHT_CCB_TYPE_PNG (0x0A << 4)
291 #define VNC_TIGHT_CCB_BASIC_MAX (0x07 << 4)
292 #define VNC_TIGHT_CCB_BASIC_ZLIB (0x03 << 4)
293 #define VNC_TIGHT_CCB_BASIC_FILTER (0x04 << 4)
295 /*****************************************************************************
299 *****************************************************************************/
301 #define VNC_FEATURE_RESIZE 0
302 #define VNC_FEATURE_HEXTILE 1
303 #define VNC_FEATURE_POINTER_TYPE_CHANGE 2
304 #define VNC_FEATURE_WMVI 3
305 #define VNC_FEATURE_TIGHT 4
306 #define VNC_FEATURE_ZLIB 5
307 #define VNC_FEATURE_COPYRECT 6
308 #define VNC_FEATURE_RICH_CURSOR 7
309 #define VNC_FEATURE_TIGHT_PNG 8
311 #define VNC_FEATURE_RESIZE_MASK (1 << VNC_FEATURE_RESIZE)
312 #define VNC_FEATURE_HEXTILE_MASK (1 << VNC_FEATURE_HEXTILE)
313 #define VNC_FEATURE_POINTER_TYPE_CHANGE_MASK (1 << VNC_FEATURE_POINTER_TYPE_CHANGE)
314 #define VNC_FEATURE_WMVI_MASK (1 << VNC_FEATURE_WMVI)
315 #define VNC_FEATURE_TIGHT_MASK (1 << VNC_FEATURE_TIGHT)
316 #define VNC_FEATURE_ZLIB_MASK (1 << VNC_FEATURE_ZLIB)
317 #define VNC_FEATURE_COPYRECT_MASK (1 << VNC_FEATURE_COPYRECT)
318 #define VNC_FEATURE_RICH_CURSOR_MASK (1 << VNC_FEATURE_RICH_CURSOR)
319 #define VNC_FEATURE_TIGHT_PNG_MASK (1 << VNC_FEATURE_TIGHT_PNG)
322 /* Client -> Server message IDs */
323 #define VNC_MSG_CLIENT_SET_PIXEL_FORMAT 0
324 #define VNC_MSG_CLIENT_SET_ENCODINGS 2
325 #define VNC_MSG_CLIENT_FRAMEBUFFER_UPDATE_REQUEST 3
326 #define VNC_MSG_CLIENT_KEY_EVENT 4
327 #define VNC_MSG_CLIENT_POINTER_EVENT 5
328 #define VNC_MSG_CLIENT_CUT_TEXT 6
329 #define VNC_MSG_CLIENT_VMWARE_0 127
330 #define VNC_MSG_CLIENT_CALL_CONTROL 249
331 #define VNC_MSG_CLIENT_XVP 250
332 #define VNC_MSG_CLIENT_SET_DESKTOP_SIZE 251
333 #define VNC_MSG_CLIENT_TIGHT 252
334 #define VNC_MSG_CLIENT_GII 253
335 #define VNC_MSG_CLIENT_VMWARE_1 254
336 #define VNC_MSG_CLIENT_QEMU 255
338 /* Server -> Client message IDs */
339 #define VNC_MSG_SERVER_FRAMEBUFFER_UPDATE 0
340 #define VNC_MSG_SERVER_SET_COLOUR_MAP_ENTRIES 1
341 #define VNC_MSG_SERVER_BELL 2
342 #define VNC_MSG_SERVER_CUT_TEXT 3
343 #define VNC_MSG_SERVER_VMWARE_0 127
344 #define VNC_MSG_SERVER_CALL_CONTROL 249
345 #define VNC_MSG_SERVER_XVP 250
346 #define VNC_MSG_SERVER_TIGHT 252
347 #define VNC_MSG_SERVER_GII 253
348 #define VNC_MSG_SERVER_VMWARE_1 254
349 #define VNC_MSG_SERVER_QEMU 255
353 /* QEMU client -> server message IDs */
354 #define VNC_MSG_CLIENT_QEMU_EXT_KEY_EVENT 0
355 #define VNC_MSG_CLIENT_QEMU_AUDIO 1
357 /* QEMU server -> client message IDs */
358 #define VNC_MSG_SERVER_QEMU_AUDIO 1
362 /* QEMU client -> server audio message IDs */
363 #define VNC_MSG_CLIENT_QEMU_AUDIO_ENABLE 0
364 #define VNC_MSG_CLIENT_QEMU_AUDIO_DISABLE 1
365 #define VNC_MSG_CLIENT_QEMU_AUDIO_SET_FORMAT 2
367 /* QEMU server -> client audio message IDs */
368 #define VNC_MSG_SERVER_QEMU_AUDIO_END 0
369 #define VNC_MSG_SERVER_QEMU_AUDIO_BEGIN 1
370 #define VNC_MSG_SERVER_QEMU_AUDIO_DATA 2
373 /*****************************************************************************
377 *****************************************************************************/
379 /* Event loop functions */
380 void vnc_client_read(void *opaque);
381 void vnc_client_write(void *opaque);
383 long vnc_client_read_buf(VncState *vs, uint8_t *data, size_t datalen);
384 long vnc_client_write_buf(VncState *vs, const uint8_t *data, size_t datalen);
386 /* Protocol I/O functions */
387 void vnc_write(VncState *vs, const void *data, size_t len);
388 void vnc_write_u32(VncState *vs, uint32_t value);
389 void vnc_write_s32(VncState *vs, int32_t value);
390 void vnc_write_u16(VncState *vs, uint16_t value);
391 void vnc_write_u8(VncState *vs, uint8_t value);
392 void vnc_flush(VncState *vs);
393 void vnc_read_when(VncState *vs, VncReadEvent *func, size_t expecting);
396 /* Buffer I/O functions */
397 uint8_t read_u8(uint8_t *data, size_t offset);
398 uint16_t read_u16(uint8_t *data, size_t offset);
399 int32_t read_s32(uint8_t *data, size_t offset);
400 uint32_t read_u32(uint8_t *data, size_t offset);
402 /* Protocol stage functions */
403 void vnc_client_error(VncState *vs);
404 int vnc_client_io_error(VncState *vs, int ret, int last_errno);
406 void start_client_init(VncState *vs);
407 void start_auth_vnc(VncState *vs);
409 /* Buffer management */
410 void buffer_reserve(Buffer *buffer, size_t len);
411 int buffer_empty(Buffer *buffer);
412 uint8_t *buffer_end(Buffer *buffer);
413 void buffer_reset(Buffer *buffer);
414 void buffer_free(Buffer *buffer);
415 void buffer_append(Buffer *buffer, const void *data, size_t len);
420 char *vnc_socket_local_addr(const char *format, int fd);
421 char *vnc_socket_remote_addr(const char *format, int fd);
423 static inline uint32_t vnc_has_feature(VncState *vs, int feature) {
424 return (vs->features & (1 << feature));
428 void vnc_framebuffer_update(VncState *vs, int x, int y, int w, int h,
431 void vnc_convert_pixel(VncState *vs, uint8_t *buf, uint32_t v);
434 int vnc_raw_send_framebuffer_update(VncState *vs, int x, int y, int w, int h);
436 int vnc_hextile_send_framebuffer_update(VncState *vs, int x,
437 int y, int w, int h);
438 void vnc_hextile_set_pixel_conversion(VncState *vs, int generic);
440 void *vnc_zlib_zalloc(void *x, unsigned items, unsigned size);
441 void vnc_zlib_zfree(void *x, void *addr);
442 int vnc_zlib_send_framebuffer_update(VncState *vs, int x, int y, int w, int h);
443 void vnc_zlib_clear(VncState *vs);
445 int vnc_tight_send_framebuffer_update(VncState *vs, int x, int y, int w, int h);
446 int vnc_tight_png_send_framebuffer_update(VncState *vs, int x, int y,
448 void vnc_tight_clear(VncState *vs);
450 #endif /* __QEMU_VNC_H */