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 #ifndef QEMU_VNC_H 28 #define QEMU_VNC_H 29 30 #include "qemu/queue.h" 31 #include "qemu/thread.h" 32 #include "ui/clipboard.h" 33 #include "ui/console.h" 34 #include "audio/audio.h" 35 #include "qemu/bitmap.h" 36 #include "crypto/tlssession.h" 37 #include "qemu/buffer.h" 38 #include "io/channel-socket.h" 39 #include "io/channel-tls.h" 40 #include "io/net-listener.h" 41 #include "authz/base.h" 42 #include <zlib.h> 43 44 #include "keymaps.h" 45 #include "vnc-palette.h" 46 #include "vnc-enc-zrle.h" 47 #include "ui/kbd-state.h" 48 49 // #define _VNC_DEBUG 1 50 51 #ifdef _VNC_DEBUG 52 #define VNC_DEBUG(fmt, ...) do { fprintf(stderr, fmt, ## __VA_ARGS__); } while (0) 53 #else 54 #define VNC_DEBUG(fmt, ...) do { } while (0) 55 #endif 56 57 /***************************************************************************** 58 * 59 * Core data structures 60 * 61 *****************************************************************************/ 62 63 typedef struct VncState VncState; 64 typedef struct VncJob VncJob; 65 typedef struct VncRect VncRect; 66 typedef struct VncRectEntry VncRectEntry; 67 68 typedef int VncReadEvent(VncState *vs, uint8_t *data, size_t len); 69 70 typedef void VncWritePixels(VncState *vs, void *data, int size); 71 72 typedef void VncSendHextileTile(VncState *vs, 73 int x, int y, int w, int h, 74 void *last_bg, 75 void *last_fg, 76 int *has_bg, int *has_fg); 77 78 /* VNC_DIRTY_PIXELS_PER_BIT is the number of dirty pixels represented 79 * by one bit in the dirty bitmap, should be a power of 2 */ 80 #define VNC_DIRTY_PIXELS_PER_BIT 16 81 82 /* VNC_MAX_WIDTH must be a multiple of VNC_DIRTY_PIXELS_PER_BIT. */ 83 84 #define VNC_MAX_WIDTH ROUND_UP(2560, VNC_DIRTY_PIXELS_PER_BIT) 85 #define VNC_MAX_HEIGHT 2048 86 87 /* VNC_DIRTY_BITS is the number of bits in the dirty bitmap. */ 88 #define VNC_DIRTY_BITS (VNC_MAX_WIDTH / VNC_DIRTY_PIXELS_PER_BIT) 89 90 /* VNC_DIRTY_BPL (BPL = bits per line) might be greater than 91 * VNC_DIRTY_BITS due to alignment */ 92 #define VNC_DIRTY_BPL(x) (sizeof((x)->dirty) / VNC_MAX_HEIGHT * BITS_PER_BYTE) 93 94 #define VNC_STAT_RECT 64 95 #define VNC_STAT_COLS (VNC_MAX_WIDTH / VNC_STAT_RECT) 96 #define VNC_STAT_ROWS (VNC_MAX_HEIGHT / VNC_STAT_RECT) 97 98 #define VNC_AUTH_CHALLENGE_SIZE 16 99 100 typedef struct VncDisplay VncDisplay; 101 102 #include "vnc-auth-vencrypt.h" 103 #ifdef CONFIG_VNC_SASL 104 #include "vnc-auth-sasl.h" 105 #endif 106 #include "vnc-ws.h" 107 108 struct VncRectStat 109 { 110 /* time of last 10 updates, to find update frequency */ 111 struct timeval times[10]; 112 int idx; 113 114 double freq; /* Update frequency (in Hz) */ 115 bool updated; /* Already updated during this refresh */ 116 }; 117 118 typedef struct VncRectStat VncRectStat; 119 120 struct VncSurface 121 { 122 struct timeval last_freq_check; 123 DECLARE_BITMAP(dirty[VNC_MAX_HEIGHT], 124 VNC_MAX_WIDTH / VNC_DIRTY_PIXELS_PER_BIT); 125 VncRectStat stats[VNC_STAT_ROWS][VNC_STAT_COLS]; 126 pixman_image_t *fb; 127 pixman_format_code_t format; 128 }; 129 130 typedef enum VncShareMode { 131 VNC_SHARE_MODE_CONNECTING = 1, 132 VNC_SHARE_MODE_SHARED, 133 VNC_SHARE_MODE_EXCLUSIVE, 134 VNC_SHARE_MODE_DISCONNECTED, 135 } VncShareMode; 136 137 typedef enum VncSharePolicy { 138 VNC_SHARE_POLICY_IGNORE = 1, 139 VNC_SHARE_POLICY_ALLOW_EXCLUSIVE, 140 VNC_SHARE_POLICY_FORCE_SHARED, 141 } VncSharePolicy; 142 143 struct VncDisplay 144 { 145 QTAILQ_HEAD(, VncState) clients; 146 int num_connecting; 147 int num_shared; 148 int num_exclusive; 149 int connections_limit; 150 VncSharePolicy share_policy; 151 QIONetListener *listener; 152 QIONetListener *wslistener; 153 DisplaySurface *ds; 154 DisplayChangeListener dcl; 155 kbd_layout_t *kbd_layout; 156 int lock_key_sync; 157 QEMUPutLEDEntry *led; 158 int ledstate; 159 QKbdState *kbd; 160 QemuMutex mutex; 161 162 int cursor_msize; 163 uint8_t *cursor_mask; 164 165 struct VncSurface guest; /* guest visible surface (aka ds->surface) */ 166 pixman_image_t *server; /* vnc server surface */ 167 int true_width; /* server surface width before rounding up */ 168 169 const char *id; 170 QTAILQ_ENTRY(VncDisplay) next; 171 bool is_unix; 172 char *password; 173 time_t expires; 174 int auth; 175 int subauth; /* Used by VeNCrypt */ 176 int ws_auth; /* Used by websockets */ 177 int ws_subauth; /* Used by websockets */ 178 bool lossy; 179 bool non_adaptive; 180 bool power_control; 181 QCryptoTLSCreds *tlscreds; 182 QAuthZ *tlsauthz; 183 char *tlsauthzid; 184 #ifdef CONFIG_VNC_SASL 185 VncDisplaySASL sasl; 186 #endif 187 188 AudioState *audio_state; 189 }; 190 191 typedef struct VncTight { 192 int type; 193 uint8_t quality; 194 uint8_t compression; 195 uint8_t pixel24; 196 Buffer tight; 197 Buffer tmp; 198 Buffer zlib; 199 Buffer gradient; 200 #ifdef CONFIG_VNC_JPEG 201 Buffer jpeg; 202 #endif 203 #ifdef CONFIG_PNG 204 Buffer png; 205 #endif 206 int levels[4]; 207 z_stream stream[4]; 208 } VncTight; 209 210 typedef struct VncHextile { 211 VncSendHextileTile *send_tile; 212 } VncHextile; 213 214 typedef struct VncZlib { 215 Buffer zlib; 216 Buffer tmp; 217 z_stream stream; 218 int level; 219 } VncZlib; 220 221 typedef struct VncZrle { 222 int type; 223 Buffer fb; 224 Buffer zrle; 225 Buffer tmp; 226 Buffer zlib; 227 z_stream stream; 228 VncPalette palette; 229 } VncZrle; 230 231 typedef struct VncZywrle { 232 int buf[VNC_ZRLE_TILE_WIDTH * VNC_ZRLE_TILE_HEIGHT]; 233 } VncZywrle; 234 235 struct VncRect 236 { 237 int x; 238 int y; 239 int w; 240 int h; 241 }; 242 243 struct VncRectEntry 244 { 245 struct VncRect rect; 246 QLIST_ENTRY(VncRectEntry) next; 247 }; 248 249 struct VncJob 250 { 251 VncState *vs; 252 253 QLIST_HEAD(, VncRectEntry) rectangles; 254 QTAILQ_ENTRY(VncJob) next; 255 }; 256 257 typedef enum { 258 VNC_STATE_UPDATE_NONE, 259 VNC_STATE_UPDATE_INCREMENTAL, 260 VNC_STATE_UPDATE_FORCE, 261 } VncStateUpdate; 262 263 #define VNC_MAGIC ((uint64_t)0x05b3f069b3d204bb) 264 265 struct VncState 266 { 267 uint64_t magic; 268 QIOChannelSocket *sioc; /* The underlying socket */ 269 QIOChannel *ioc; /* The channel currently used for I/O */ 270 guint ioc_tag; 271 gboolean disconnecting; 272 273 DECLARE_BITMAP(dirty[VNC_MAX_HEIGHT], VNC_DIRTY_BITS); 274 uint8_t **lossy_rect; /* Not an Array to avoid costly memcpy in 275 * vnc-jobs-async.c */ 276 277 VncDisplay *vd; 278 VncStateUpdate update; /* Most recent pending request from client */ 279 VncStateUpdate job_update; /* Currently processed by job thread */ 280 int has_dirty; 281 uint32_t features; 282 int absolute; 283 int last_x; 284 int last_y; 285 uint32_t last_bmask; 286 size_t client_width; /* limited to u16 by RFB proto */ 287 size_t client_height; /* limited to u16 by RFB proto */ 288 VncShareMode share_mode; 289 290 uint32_t vnc_encoding; 291 292 int major; 293 int minor; 294 295 int auth; 296 int subauth; /* Used by VeNCrypt */ 297 char challenge[VNC_AUTH_CHALLENGE_SIZE]; 298 QCryptoTLSSession *tls; /* Borrowed pointer from channel, don't free */ 299 #ifdef CONFIG_VNC_SASL 300 VncStateSASL sasl; 301 #endif 302 bool encode_ws; 303 bool websocket; 304 305 #ifdef CONFIG_VNC 306 VncClientInfo *info; 307 #endif 308 309 /* Job thread bottom half has put data for a forced update 310 * into the output buffer. This offset points to the end of 311 * the update data in the output buffer. This lets us determine 312 * when a force update is fully sent to the client, allowing 313 * us to process further forced updates. */ 314 size_t force_update_offset; 315 /* We allow multiple incremental updates or audio capture 316 * samples to be queued in output buffer, provided the 317 * buffer size doesn't exceed this threshold. The value 318 * is calculating dynamically based on framebuffer size 319 * and audio sample settings in vnc_update_throttle_offset() */ 320 size_t throttle_output_offset; 321 Buffer output; 322 Buffer input; 323 /* current output mode information */ 324 VncWritePixels *write_pixels; 325 PixelFormat client_pf; 326 pixman_format_code_t client_format; 327 bool client_be; 328 329 CaptureVoiceOut *audio_cap; 330 struct audsettings as; 331 332 VncReadEvent *read_handler; 333 size_t read_handler_expect; 334 335 bool abort; 336 QemuMutex output_mutex; 337 QEMUBH *bh; 338 Buffer jobs_buffer; 339 340 /* Encoding specific, if you add something here, don't forget to 341 * update vnc_async_encoding_start() 342 */ 343 VncTight *tight; 344 VncZlib zlib; 345 VncHextile hextile; 346 VncZrle *zrle; 347 VncZywrle zywrle; 348 349 Notifier mouse_mode_notifier; 350 351 QemuClipboardPeer cbpeer; 352 QemuClipboardInfo *cbinfo; 353 uint32_t cbpending; 354 355 QTAILQ_ENTRY(VncState) next; 356 }; 357 358 359 /***************************************************************************** 360 * 361 * Authentication modes 362 * 363 *****************************************************************************/ 364 365 enum { 366 VNC_AUTH_INVALID = 0, 367 VNC_AUTH_NONE = 1, 368 VNC_AUTH_VNC = 2, 369 VNC_AUTH_RA2 = 5, 370 VNC_AUTH_RA2NE = 6, 371 VNC_AUTH_TIGHT = 16, 372 VNC_AUTH_ULTRA = 17, 373 VNC_AUTH_TLS = 18, /* Supported in GTK-VNC & VINO */ 374 VNC_AUTH_VENCRYPT = 19, /* Supported in GTK-VNC & VeNCrypt */ 375 VNC_AUTH_SASL = 20, /* Supported in GTK-VNC & VINO */ 376 }; 377 378 enum { 379 VNC_AUTH_VENCRYPT_PLAIN = 256, 380 VNC_AUTH_VENCRYPT_TLSNONE = 257, 381 VNC_AUTH_VENCRYPT_TLSVNC = 258, 382 VNC_AUTH_VENCRYPT_TLSPLAIN = 259, 383 VNC_AUTH_VENCRYPT_X509NONE = 260, 384 VNC_AUTH_VENCRYPT_X509VNC = 261, 385 VNC_AUTH_VENCRYPT_X509PLAIN = 262, 386 VNC_AUTH_VENCRYPT_X509SASL = 263, 387 VNC_AUTH_VENCRYPT_TLSSASL = 264, 388 }; 389 390 391 /***************************************************************************** 392 * 393 * Encoding types 394 * 395 *****************************************************************************/ 396 397 #define VNC_ENCODING_RAW 0x00000000 398 #define VNC_ENCODING_COPYRECT 0x00000001 399 #define VNC_ENCODING_RRE 0x00000002 400 #define VNC_ENCODING_CORRE 0x00000004 401 #define VNC_ENCODING_HEXTILE 0x00000005 402 #define VNC_ENCODING_ZLIB 0x00000006 403 #define VNC_ENCODING_TIGHT 0x00000007 404 #define VNC_ENCODING_ZLIBHEX 0x00000008 405 #define VNC_ENCODING_TRLE 0x0000000f 406 #define VNC_ENCODING_ZRLE 0x00000010 407 #define VNC_ENCODING_ZYWRLE 0x00000011 408 #define VNC_ENCODING_COMPRESSLEVEL0 0xFFFFFF00 /* -256 */ 409 #define VNC_ENCODING_QUALITYLEVEL0 0xFFFFFFE0 /* -32 */ 410 #define VNC_ENCODING_XCURSOR 0xFFFFFF10 /* -240 */ 411 #define VNC_ENCODING_RICH_CURSOR 0xFFFFFF11 /* -239 */ 412 #define VNC_ENCODING_POINTER_POS 0xFFFFFF18 /* -232 */ 413 #define VNC_ENCODING_LASTRECT 0xFFFFFF20 /* -224 */ 414 #define VNC_ENCODING_DESKTOPRESIZE 0xFFFFFF21 /* -223 */ 415 #define VNC_ENCODING_POINTER_TYPE_CHANGE 0XFFFFFEFF /* -257 */ 416 #define VNC_ENCODING_EXT_KEY_EVENT 0XFFFFFEFE /* -258 */ 417 #define VNC_ENCODING_AUDIO 0XFFFFFEFD /* -259 */ 418 #define VNC_ENCODING_TIGHT_PNG 0xFFFFFEFC /* -260 */ 419 #define VNC_ENCODING_LED_STATE 0XFFFFFEFB /* -261 */ 420 #define VNC_ENCODING_DESKTOP_RESIZE_EXT 0XFFFFFECC /* -308 */ 421 #define VNC_ENCODING_XVP 0XFFFFFECB /* -309 */ 422 #define VNC_ENCODING_ALPHA_CURSOR 0XFFFFFEC6 /* -314 */ 423 #define VNC_ENCODING_WMVi 0x574D5669 424 #define VNC_ENCODING_CLIPBOARD_EXT 0xc0a1e5ce 425 426 /***************************************************************************** 427 * 428 * Other tight constants 429 * 430 *****************************************************************************/ 431 432 /* 433 * Vendors known by TightVNC: standard VNC/RealVNC, TridiaVNC, and TightVNC. 434 */ 435 436 #define VNC_TIGHT_CCB_RESET_MASK (0x0f) 437 #define VNC_TIGHT_CCB_TYPE_MASK (0x0f << 4) 438 #define VNC_TIGHT_CCB_TYPE_FILL (0x08 << 4) 439 #define VNC_TIGHT_CCB_TYPE_JPEG (0x09 << 4) 440 #define VNC_TIGHT_CCB_TYPE_PNG (0x0A << 4) 441 #define VNC_TIGHT_CCB_BASIC_MAX (0x07 << 4) 442 #define VNC_TIGHT_CCB_BASIC_ZLIB (0x03 << 4) 443 #define VNC_TIGHT_CCB_BASIC_FILTER (0x04 << 4) 444 445 /***************************************************************************** 446 * 447 * Features 448 * 449 *****************************************************************************/ 450 451 enum VncFeatures { 452 VNC_FEATURE_RESIZE, 453 VNC_FEATURE_RESIZE_EXT, 454 VNC_FEATURE_HEXTILE, 455 VNC_FEATURE_POINTER_TYPE_CHANGE, 456 VNC_FEATURE_WMVI, 457 VNC_FEATURE_TIGHT, 458 VNC_FEATURE_ZLIB, 459 VNC_FEATURE_RICH_CURSOR, 460 VNC_FEATURE_ALPHA_CURSOR, 461 VNC_FEATURE_TIGHT_PNG, 462 VNC_FEATURE_ZRLE, 463 VNC_FEATURE_ZYWRLE, 464 VNC_FEATURE_LED_STATE, 465 VNC_FEATURE_XVP, 466 VNC_FEATURE_CLIPBOARD_EXT, 467 VNC_FEATURE_AUDIO, 468 }; 469 470 #define VNC_FEATURE_RESIZE_MASK (1 << VNC_FEATURE_RESIZE) 471 #define VNC_FEATURE_RESIZE_EXT_MASK (1 << VNC_FEATURE_RESIZE_EXT) 472 #define VNC_FEATURE_HEXTILE_MASK (1 << VNC_FEATURE_HEXTILE) 473 #define VNC_FEATURE_POINTER_TYPE_CHANGE_MASK (1 << VNC_FEATURE_POINTER_TYPE_CHANGE) 474 #define VNC_FEATURE_WMVI_MASK (1 << VNC_FEATURE_WMVI) 475 #define VNC_FEATURE_TIGHT_MASK (1 << VNC_FEATURE_TIGHT) 476 #define VNC_FEATURE_ZLIB_MASK (1 << VNC_FEATURE_ZLIB) 477 #define VNC_FEATURE_RICH_CURSOR_MASK (1 << VNC_FEATURE_RICH_CURSOR) 478 #define VNC_FEATURE_ALPHA_CURSOR_MASK (1 << VNC_FEATURE_ALPHA_CURSOR) 479 #define VNC_FEATURE_TIGHT_PNG_MASK (1 << VNC_FEATURE_TIGHT_PNG) 480 #define VNC_FEATURE_ZRLE_MASK (1 << VNC_FEATURE_ZRLE) 481 #define VNC_FEATURE_ZYWRLE_MASK (1 << VNC_FEATURE_ZYWRLE) 482 #define VNC_FEATURE_LED_STATE_MASK (1 << VNC_FEATURE_LED_STATE) 483 #define VNC_FEATURE_XVP_MASK (1 << VNC_FEATURE_XVP) 484 #define VNC_FEATURE_CLIPBOARD_EXT_MASK (1 << VNC_FEATURE_CLIPBOARD_EXT) 485 #define VNC_FEATURE_AUDIO_MASK (1 << VNC_FEATURE_AUDIO) 486 487 488 /* Client -> Server message IDs */ 489 #define VNC_MSG_CLIENT_SET_PIXEL_FORMAT 0 490 #define VNC_MSG_CLIENT_SET_ENCODINGS 2 491 #define VNC_MSG_CLIENT_FRAMEBUFFER_UPDATE_REQUEST 3 492 #define VNC_MSG_CLIENT_KEY_EVENT 4 493 #define VNC_MSG_CLIENT_POINTER_EVENT 5 494 #define VNC_MSG_CLIENT_CUT_TEXT 6 495 #define VNC_MSG_CLIENT_VMWARE_0 127 496 #define VNC_MSG_CLIENT_CALL_CONTROL 249 497 #define VNC_MSG_CLIENT_XVP 250 498 #define VNC_MSG_CLIENT_SET_DESKTOP_SIZE 251 499 #define VNC_MSG_CLIENT_TIGHT 252 500 #define VNC_MSG_CLIENT_GII 253 501 #define VNC_MSG_CLIENT_VMWARE_1 254 502 #define VNC_MSG_CLIENT_QEMU 255 503 504 /* Server -> Client message IDs */ 505 #define VNC_MSG_SERVER_FRAMEBUFFER_UPDATE 0 506 #define VNC_MSG_SERVER_SET_COLOUR_MAP_ENTRIES 1 507 #define VNC_MSG_SERVER_BELL 2 508 #define VNC_MSG_SERVER_CUT_TEXT 3 509 #define VNC_MSG_SERVER_VMWARE_0 127 510 #define VNC_MSG_SERVER_CALL_CONTROL 249 511 #define VNC_MSG_SERVER_XVP 250 512 #define VNC_MSG_SERVER_TIGHT 252 513 #define VNC_MSG_SERVER_GII 253 514 #define VNC_MSG_SERVER_VMWARE_1 254 515 #define VNC_MSG_SERVER_QEMU 255 516 517 518 519 /* QEMU client -> server message IDs */ 520 #define VNC_MSG_CLIENT_QEMU_EXT_KEY_EVENT 0 521 #define VNC_MSG_CLIENT_QEMU_AUDIO 1 522 523 /* QEMU server -> client message IDs */ 524 #define VNC_MSG_SERVER_QEMU_AUDIO 1 525 526 527 528 /* QEMU client -> server audio message IDs */ 529 #define VNC_MSG_CLIENT_QEMU_AUDIO_ENABLE 0 530 #define VNC_MSG_CLIENT_QEMU_AUDIO_DISABLE 1 531 #define VNC_MSG_CLIENT_QEMU_AUDIO_SET_FORMAT 2 532 533 /* QEMU server -> client audio message IDs */ 534 #define VNC_MSG_SERVER_QEMU_AUDIO_END 0 535 #define VNC_MSG_SERVER_QEMU_AUDIO_BEGIN 1 536 #define VNC_MSG_SERVER_QEMU_AUDIO_DATA 2 537 538 /* XVP server -> client status code */ 539 #define VNC_XVP_CODE_FAIL 0 540 #define VNC_XVP_CODE_INIT 1 541 542 /* XVP client -> server action request */ 543 #define VNC_XVP_ACTION_SHUTDOWN 2 544 #define VNC_XVP_ACTION_REBOOT 3 545 #define VNC_XVP_ACTION_RESET 4 546 547 /* extended clipboard flags */ 548 #define VNC_CLIPBOARD_TEXT (1 << 0) 549 #define VNC_CLIPBOARD_RTF (1 << 1) 550 #define VNC_CLIPBOARD_HTML (1 << 2) 551 #define VNC_CLIPBOARD_DIB (1 << 3) 552 #define VNC_CLIPBOARD_FILES (1 << 4) 553 #define VNC_CLIPBOARD_CAPS (1 << 24) 554 #define VNC_CLIPBOARD_REQUEST (1 << 25) 555 #define VNC_CLIPBOARD_PEEK (1 << 26) 556 #define VNC_CLIPBOARD_NOTIFY (1 << 27) 557 #define VNC_CLIPBOARD_PROVIDE (1 << 28) 558 559 /***************************************************************************** 560 * 561 * Internal APIs 562 * 563 *****************************************************************************/ 564 565 /* Event loop functions */ 566 gboolean vnc_client_io(QIOChannel *ioc, 567 GIOCondition condition, 568 void *opaque); 569 570 size_t vnc_client_read_buf(VncState *vs, uint8_t *data, size_t datalen); 571 size_t vnc_client_write_buf(VncState *vs, const uint8_t *data, size_t datalen); 572 573 /* Protocol I/O functions */ 574 void vnc_write(VncState *vs, const void *data, size_t len); 575 void vnc_write_u32(VncState *vs, uint32_t value); 576 void vnc_write_s32(VncState *vs, int32_t value); 577 void vnc_write_u16(VncState *vs, uint16_t value); 578 void vnc_write_u8(VncState *vs, uint8_t value); 579 void vnc_flush(VncState *vs); 580 void vnc_read_when(VncState *vs, VncReadEvent *func, size_t expecting); 581 void vnc_disconnect_finish(VncState *vs); 582 void vnc_start_protocol(VncState *vs); 583 584 585 /* Buffer I/O functions */ 586 uint32_t read_u32(uint8_t *data, size_t offset); 587 588 /* Protocol stage functions */ 589 void vnc_client_error(VncState *vs); 590 size_t vnc_client_io_error(VncState *vs, ssize_t ret, Error *err); 591 592 void start_client_init(VncState *vs); 593 void start_auth_vnc(VncState *vs); 594 595 596 /* Misc helpers */ 597 598 static inline uint32_t vnc_has_feature(VncState *vs, int feature) { 599 return (vs->features & (1 << feature)); 600 } 601 602 /* Framebuffer */ 603 void vnc_framebuffer_update(VncState *vs, int x, int y, int w, int h, 604 int32_t encoding); 605 606 /* server fb is in PIXMAN_x8r8g8b8 */ 607 #define VNC_SERVER_FB_FORMAT PIXMAN_FORMAT(32, PIXMAN_TYPE_ARGB, 0, 8, 8, 8) 608 #define VNC_SERVER_FB_BITS (PIXMAN_FORMAT_BPP(VNC_SERVER_FB_FORMAT)) 609 #define VNC_SERVER_FB_BYTES ((VNC_SERVER_FB_BITS+7)/8) 610 611 void *vnc_server_fb_ptr(VncDisplay *vd, int x, int y); 612 int vnc_server_fb_stride(VncDisplay *vd); 613 614 void vnc_convert_pixel(VncState *vs, uint8_t *buf, uint32_t v); 615 double vnc_update_freq(VncState *vs, int x, int y, int w, int h); 616 void vnc_sent_lossy_rect(VncState *vs, int x, int y, int w, int h); 617 618 /* Encodings */ 619 int vnc_send_framebuffer_update(VncState *vs, int x, int y, int w, int h); 620 621 int vnc_raw_send_framebuffer_update(VncState *vs, int x, int y, int w, int h); 622 623 int vnc_hextile_send_framebuffer_update(VncState *vs, int x, 624 int y, int w, int h); 625 void vnc_hextile_set_pixel_conversion(VncState *vs, int generic); 626 627 void *vnc_zlib_zalloc(void *x, unsigned items, unsigned size); 628 void vnc_zlib_zfree(void *x, void *addr); 629 int vnc_zlib_send_framebuffer_update(VncState *vs, int x, int y, int w, int h); 630 void vnc_zlib_clear(VncState *vs); 631 632 int vnc_tight_send_framebuffer_update(VncState *vs, int x, int y, int w, int h); 633 int vnc_tight_png_send_framebuffer_update(VncState *vs, int x, int y, 634 int w, int h); 635 void vnc_tight_clear(VncState *vs); 636 637 int vnc_zrle_send_framebuffer_update(VncState *vs, int x, int y, int w, int h); 638 int vnc_zywrle_send_framebuffer_update(VncState *vs, int x, int y, int w, int h); 639 void vnc_zrle_clear(VncState *vs); 640 641 /* vnc-clipboard.c */ 642 void vnc_server_cut_text_caps(VncState *vs); 643 void vnc_client_cut_text(VncState *vs, size_t len, uint8_t *text); 644 void vnc_client_cut_text_ext(VncState *vs, int32_t len, uint32_t flags, uint8_t *data); 645 646 #endif /* QEMU_VNC_H */ 647