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"
39 // #define _VNC_DEBUG 1
42 #define VNC_DEBUG(fmt, ...) do { fprintf(stderr, fmt, ## __VA_ARGS__); } while (0)
44 #define VNC_DEBUG(fmt, ...) do { } while (0)
47 /*****************************************************************************
49 * Core data structures
51 *****************************************************************************/
60 typedef struct VncState VncState;
62 typedef int VncReadEvent(VncState *vs, uint8_t *data, size_t len);
64 typedef void VncWritePixels(VncState *vs, struct PixelFormat *pf, void *data, int size);
66 typedef void VncSendHextileTile(VncState *vs,
67 int x, int y, int w, int h,
70 int *has_bg, int *has_fg);
72 #define VNC_MAX_WIDTH 2560
73 #define VNC_MAX_HEIGHT 2048
74 #define VNC_DIRTY_WORDS (VNC_MAX_WIDTH / (16 * 32))
76 #define VNC_AUTH_CHALLENGE_SIZE 16
78 typedef struct VncDisplay VncDisplay;
82 #include "vnc-auth-vencrypt.h"
84 #ifdef CONFIG_VNC_SASL
85 #include "vnc-auth-sasl.h"
90 uint32_t dirty[VNC_MAX_HEIGHT][VNC_DIRTY_WORDS];
96 QTAILQ_HEAD(, VncState) clients;
101 kbd_layout_t *kbd_layout;
106 uint8_t *cursor_mask;
108 struct VncSurface guest; /* guest visible surface (aka ds->surface) */
109 DisplaySurface *server; /* vnc server surface */
114 #ifdef CONFIG_VNC_TLS
115 int subauth; /* Used by VeNCrypt */
118 #ifdef CONFIG_VNC_SASL
128 uint32_t dirty[VNC_MAX_HEIGHT][VNC_DIRTY_WORDS];
138 uint32_t vnc_encoding;
143 char challenge[VNC_AUTH_CHALLENGE_SIZE];
144 #ifdef CONFIG_VNC_TLS
147 #ifdef CONFIG_VNC_SASL
155 /* current output mode information */
156 VncWritePixels *write_pixels;
157 DisplaySurface clientds;
159 CaptureVoiceOut *audio_cap;
160 struct audsettings as;
162 VncReadEvent *read_handler;
163 size_t read_handler_expect;
165 uint8_t modifiers_state[256];
166 QEMUPutLEDEntry *led;
168 /* Encoding specific */
171 uint8_t tight_quality;
172 uint8_t tight_compression;
173 uint8_t tight_pixel24;
178 z_stream tight_stream[4];
181 VncSendHextileTile *send_hextile_tile;
186 z_stream zlib_stream;
189 Notifier mouse_mode_notifier;
191 QTAILQ_ENTRY(VncState) next;
195 /*****************************************************************************
197 * Authentication modes
199 *****************************************************************************/
202 VNC_AUTH_INVALID = 0,
209 VNC_AUTH_TLS = 18, /* Supported in GTK-VNC & VINO */
210 VNC_AUTH_VENCRYPT = 19, /* Supported in GTK-VNC & VeNCrypt */
211 VNC_AUTH_SASL = 20, /* Supported in GTK-VNC & VINO */
215 VNC_AUTH_VENCRYPT_PLAIN = 256,
216 VNC_AUTH_VENCRYPT_TLSNONE = 257,
217 VNC_AUTH_VENCRYPT_TLSVNC = 258,
218 VNC_AUTH_VENCRYPT_TLSPLAIN = 259,
219 VNC_AUTH_VENCRYPT_X509NONE = 260,
220 VNC_AUTH_VENCRYPT_X509VNC = 261,
221 VNC_AUTH_VENCRYPT_X509PLAIN = 262,
222 VNC_AUTH_VENCRYPT_X509SASL = 263,
223 VNC_AUTH_VENCRYPT_TLSSASL = 264,
227 /*****************************************************************************
231 *****************************************************************************/
233 #define VNC_ENCODING_RAW 0x00000000
234 #define VNC_ENCODING_COPYRECT 0x00000001
235 #define VNC_ENCODING_RRE 0x00000002
236 #define VNC_ENCODING_CORRE 0x00000004
237 #define VNC_ENCODING_HEXTILE 0x00000005
238 #define VNC_ENCODING_ZLIB 0x00000006
239 #define VNC_ENCODING_TIGHT 0x00000007
240 #define VNC_ENCODING_ZLIBHEX 0x00000008
241 #define VNC_ENCODING_TRLE 0x0000000f
242 #define VNC_ENCODING_ZRLE 0x00000010
243 #define VNC_ENCODING_ZYWRLE 0x00000011
244 #define VNC_ENCODING_COMPRESSLEVEL0 0xFFFFFF00 /* -256 */
245 #define VNC_ENCODING_QUALITYLEVEL0 0xFFFFFFE0 /* -32 */
246 #define VNC_ENCODING_XCURSOR 0xFFFFFF10 /* -240 */
247 #define VNC_ENCODING_RICH_CURSOR 0xFFFFFF11 /* -239 */
248 #define VNC_ENCODING_POINTER_POS 0xFFFFFF18 /* -232 */
249 #define VNC_ENCODING_LASTRECT 0xFFFFFF20 /* -224 */
250 #define VNC_ENCODING_DESKTOPRESIZE 0xFFFFFF21 /* -223 */
251 #define VNC_ENCODING_POINTER_TYPE_CHANGE 0XFFFFFEFF /* -257 */
252 #define VNC_ENCODING_EXT_KEY_EVENT 0XFFFFFEFE /* -258 */
253 #define VNC_ENCODING_AUDIO 0XFFFFFEFD /* -259 */
254 #define VNC_ENCODING_WMVi 0x574D5669
256 /*****************************************************************************
258 * Other tight constants
260 *****************************************************************************/
263 * Vendors known by TightVNC: standard VNC/RealVNC, TridiaVNC, and TightVNC.
266 #define VNC_TIGHT_CCB_RESET_MASK (0x0f)
267 #define VNC_TIGHT_CCB_TYPE_MASK (0x0f << 4)
268 #define VNC_TIGHT_CCB_TYPE_FILL (0x08 << 4)
269 #define VNC_TIGHT_CCB_TYPE_JPEG (0x09 << 4)
270 #define VNC_TIGHT_CCB_BASIC_MAX (0x07 << 4)
271 #define VNC_TIGHT_CCB_BASIC_ZLIB (0x03 << 4)
272 #define VNC_TIGHT_CCB_BASIC_FILTER (0x04 << 4)
274 /*****************************************************************************
278 *****************************************************************************/
280 #define VNC_FEATURE_RESIZE 0
281 #define VNC_FEATURE_HEXTILE 1
282 #define VNC_FEATURE_POINTER_TYPE_CHANGE 2
283 #define VNC_FEATURE_WMVI 3
284 #define VNC_FEATURE_TIGHT 4
285 #define VNC_FEATURE_ZLIB 5
286 #define VNC_FEATURE_COPYRECT 6
287 #define VNC_FEATURE_RICH_CURSOR 7
289 #define VNC_FEATURE_RESIZE_MASK (1 << VNC_FEATURE_RESIZE)
290 #define VNC_FEATURE_HEXTILE_MASK (1 << VNC_FEATURE_HEXTILE)
291 #define VNC_FEATURE_POINTER_TYPE_CHANGE_MASK (1 << VNC_FEATURE_POINTER_TYPE_CHANGE)
292 #define VNC_FEATURE_WMVI_MASK (1 << VNC_FEATURE_WMVI)
293 #define VNC_FEATURE_TIGHT_MASK (1 << VNC_FEATURE_TIGHT)
294 #define VNC_FEATURE_ZLIB_MASK (1 << VNC_FEATURE_ZLIB)
295 #define VNC_FEATURE_COPYRECT_MASK (1 << VNC_FEATURE_COPYRECT)
296 #define VNC_FEATURE_RICH_CURSOR_MASK (1 << VNC_FEATURE_RICH_CURSOR)
299 /* Client -> Server message IDs */
300 #define VNC_MSG_CLIENT_SET_PIXEL_FORMAT 0
301 #define VNC_MSG_CLIENT_SET_ENCODINGS 2
302 #define VNC_MSG_CLIENT_FRAMEBUFFER_UPDATE_REQUEST 3
303 #define VNC_MSG_CLIENT_KEY_EVENT 4
304 #define VNC_MSG_CLIENT_POINTER_EVENT 5
305 #define VNC_MSG_CLIENT_CUT_TEXT 6
306 #define VNC_MSG_CLIENT_VMWARE_0 127
307 #define VNC_MSG_CLIENT_CALL_CONTROL 249
308 #define VNC_MSG_CLIENT_XVP 250
309 #define VNC_MSG_CLIENT_SET_DESKTOP_SIZE 251
310 #define VNC_MSG_CLIENT_TIGHT 252
311 #define VNC_MSG_CLIENT_GII 253
312 #define VNC_MSG_CLIENT_VMWARE_1 254
313 #define VNC_MSG_CLIENT_QEMU 255
315 /* Server -> Client message IDs */
316 #define VNC_MSG_SERVER_FRAMEBUFFER_UPDATE 0
317 #define VNC_MSG_SERVER_SET_COLOUR_MAP_ENTRIES 1
318 #define VNC_MSG_SERVER_BELL 2
319 #define VNC_MSG_SERVER_CUT_TEXT 3
320 #define VNC_MSG_SERVER_VMWARE_0 127
321 #define VNC_MSG_SERVER_CALL_CONTROL 249
322 #define VNC_MSG_SERVER_XVP 250
323 #define VNC_MSG_SERVER_TIGHT 252
324 #define VNC_MSG_SERVER_GII 253
325 #define VNC_MSG_SERVER_VMWARE_1 254
326 #define VNC_MSG_SERVER_QEMU 255
330 /* QEMU client -> server message IDs */
331 #define VNC_MSG_CLIENT_QEMU_EXT_KEY_EVENT 0
332 #define VNC_MSG_CLIENT_QEMU_AUDIO 1
334 /* QEMU server -> client message IDs */
335 #define VNC_MSG_SERVER_QEMU_AUDIO 1
339 /* QEMU client -> server audio message IDs */
340 #define VNC_MSG_CLIENT_QEMU_AUDIO_ENABLE 0
341 #define VNC_MSG_CLIENT_QEMU_AUDIO_DISABLE 1
342 #define VNC_MSG_CLIENT_QEMU_AUDIO_SET_FORMAT 2
344 /* QEMU server -> client audio message IDs */
345 #define VNC_MSG_SERVER_QEMU_AUDIO_END 0
346 #define VNC_MSG_SERVER_QEMU_AUDIO_BEGIN 1
347 #define VNC_MSG_SERVER_QEMU_AUDIO_DATA 2
350 /*****************************************************************************
354 *****************************************************************************/
356 /* Event loop functions */
357 void vnc_client_read(void *opaque);
358 void vnc_client_write(void *opaque);
360 long vnc_client_read_buf(VncState *vs, uint8_t *data, size_t datalen);
361 long vnc_client_write_buf(VncState *vs, const uint8_t *data, size_t datalen);
363 /* Protocol I/O functions */
364 void vnc_write(VncState *vs, const void *data, size_t len);
365 void vnc_write_u32(VncState *vs, uint32_t value);
366 void vnc_write_s32(VncState *vs, int32_t value);
367 void vnc_write_u16(VncState *vs, uint16_t value);
368 void vnc_write_u8(VncState *vs, uint8_t value);
369 void vnc_flush(VncState *vs);
370 void vnc_read_when(VncState *vs, VncReadEvent *func, size_t expecting);
373 /* Buffer I/O functions */
374 uint8_t read_u8(uint8_t *data, size_t offset);
375 uint16_t read_u16(uint8_t *data, size_t offset);
376 int32_t read_s32(uint8_t *data, size_t offset);
377 uint32_t read_u32(uint8_t *data, size_t offset);
379 /* Protocol stage functions */
380 void vnc_client_error(VncState *vs);
381 int vnc_client_io_error(VncState *vs, int ret, int last_errno);
383 void start_client_init(VncState *vs);
384 void start_auth_vnc(VncState *vs);
386 /* Buffer management */
387 void buffer_reserve(Buffer *buffer, size_t len);
388 int buffer_empty(Buffer *buffer);
389 uint8_t *buffer_end(Buffer *buffer);
390 void buffer_reset(Buffer *buffer);
391 void buffer_free(Buffer *buffer);
392 void buffer_append(Buffer *buffer, const void *data, size_t len);
397 char *vnc_socket_local_addr(const char *format, int fd);
398 char *vnc_socket_remote_addr(const char *format, int fd);
401 void vnc_framebuffer_update(VncState *vs, int x, int y, int w, int h,
404 void vnc_convert_pixel(VncState *vs, uint8_t *buf, uint32_t v);
407 int vnc_raw_send_framebuffer_update(VncState *vs, int x, int y, int w, int h);
409 int vnc_hextile_send_framebuffer_update(VncState *vs, int x,
410 int y, int w, int h);
411 void vnc_hextile_set_pixel_conversion(VncState *vs, int generic);
413 void *vnc_zlib_zalloc(void *x, unsigned items, unsigned size);
414 void vnc_zlib_zfree(void *x, void *addr);
415 int vnc_zlib_send_framebuffer_update(VncState *vs, int x, int y, int w, int h);
416 void vnc_zlib_clear(VncState *vs);
419 int vnc_tight_send_framebuffer_update(VncState *vs, int x, int y, int w, int h);
420 void vnc_tight_clear(VncState *vs);
422 #endif /* __QEMU_VNC_H */