/* * QEMU VNC display driver * * Copyright (C) 2006 Anthony Liguori <anthony@codemonkey.ws> * Copyright (C) 2006 Fabrice Bellard * Copyright (C) 2009 Red Hat, Inc * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN * THE SOFTWARE. */ #ifndef __QEMU_VNC_H #define __QEMU_VNC_H #include "qemu-common.h" #include "qemu-queue.h" #ifdef CONFIG_VNC_THREAD #include "qemu-thread.h" #endif #include "console.h" #include "monitor.h" #include "audio/audio.h" #include "bitmap.h" #include <zlib.h> #include <stdbool.h> #include "keymaps.h" #include "vnc-palette.h" #include "vnc-enc-zrle.h" // #define _VNC_DEBUG 1 #ifdef _VNC_DEBUG #define VNC_DEBUG(fmt, ...) do { fprintf(stderr, fmt, ## __VA_ARGS__); } while (0) #else #define VNC_DEBUG(fmt, ...) do { } while (0) #endif /***************************************************************************** * * Core data structures * *****************************************************************************/ typedef struct Buffer { size_t capacity; size_t offset; uint8_t *buffer; } Buffer; typedef struct VncState VncState; typedef struct VncJob VncJob; typedef struct VncRect VncRect; typedef struct VncRectEntry VncRectEntry; typedef int VncReadEvent(VncState *vs, uint8_t *data, size_t len); typedef void VncWritePixels(VncState *vs, struct PixelFormat *pf, void *data, int size); typedef void VncSendHextileTile(VncState *vs, int x, int y, int w, int h, void *last_bg, void *last_fg, int *has_bg, int *has_fg); /* VNC_MAX_WIDTH must be a multiple of 16. */ #define VNC_MAX_WIDTH 2560 #define VNC_MAX_HEIGHT 2048 /* VNC_DIRTY_BITS is the number of bits in the dirty bitmap. */ #define VNC_DIRTY_BITS (VNC_MAX_WIDTH / 16) #define VNC_STAT_RECT 64 #define VNC_STAT_COLS (VNC_MAX_WIDTH / VNC_STAT_RECT) #define VNC_STAT_ROWS (VNC_MAX_HEIGHT / VNC_STAT_RECT) #define VNC_AUTH_CHALLENGE_SIZE 16 typedef struct VncDisplay VncDisplay; #ifdef CONFIG_VNC_TLS #include "vnc-tls.h" #include "vnc-auth-vencrypt.h" #endif #ifdef CONFIG_VNC_SASL #include "vnc-auth-sasl.h" #endif struct VncRectStat { /* time of last 10 updates, to find update frequency */ struct timeval times[10]; int idx; double freq; /* Update frequency (in Hz) */ bool updated; /* Already updated during this refresh */ }; typedef struct VncRectStat VncRectStat; struct VncSurface { struct timeval last_freq_check; DECLARE_BITMAP(dirty[VNC_MAX_HEIGHT], VNC_MAX_WIDTH / 16); VncRectStat stats[VNC_STAT_ROWS][VNC_STAT_COLS]; DisplaySurface *ds; }; typedef enum VncShareMode { VNC_SHARE_MODE_CONNECTING = 1, VNC_SHARE_MODE_SHARED, VNC_SHARE_MODE_EXCLUSIVE, VNC_SHARE_MODE_DISCONNECTED, } VncShareMode; typedef enum VncSharePolicy { VNC_SHARE_POLICY_IGNORE = 1, VNC_SHARE_POLICY_ALLOW_EXCLUSIVE, VNC_SHARE_POLICY_FORCE_SHARED, } VncSharePolicy; struct VncDisplay { QTAILQ_HEAD(, VncState) clients; int num_exclusive; VncSharePolicy share_policy; QEMUTimer *timer; int timer_interval; int lsock; DisplayState *ds; kbd_layout_t *kbd_layout; int lock_key_sync; #ifdef CONFIG_VNC_THREAD QemuMutex mutex; #endif QEMUCursor *cursor; int cursor_msize; uint8_t *cursor_mask; struct VncSurface guest; /* guest visible surface (aka ds->surface) */ DisplaySurface *server; /* vnc server surface */ char *display; char *password; time_t expires; int auth; bool lossy; bool non_adaptive; #ifdef CONFIG_VNC_TLS int subauth; /* Used by VeNCrypt */ VncDisplayTLS tls; #endif #ifdef CONFIG_VNC_SASL VncDisplaySASL sasl; #endif }; typedef struct VncTight { int type; uint8_t quality; uint8_t compression; uint8_t pixel24; Buffer tight; Buffer tmp; Buffer zlib; Buffer gradient; #ifdef CONFIG_VNC_JPEG Buffer jpeg; #endif #ifdef CONFIG_VNC_PNG Buffer png; #endif int levels[4]; z_stream stream[4]; } VncTight; typedef struct VncHextile { VncSendHextileTile *send_tile; } VncHextile; typedef struct VncZlib { Buffer zlib; Buffer tmp; z_stream stream; int level; } VncZlib; typedef struct VncZrle { int type; Buffer fb; Buffer zrle; Buffer tmp; Buffer zlib; z_stream stream; VncPalette palette; } VncZrle; typedef struct VncZywrle { int buf[VNC_ZRLE_TILE_WIDTH * VNC_ZRLE_TILE_HEIGHT]; } VncZywrle; #ifdef CONFIG_VNC_THREAD struct VncRect { int x; int y; int w; int h; }; struct VncRectEntry { struct VncRect rect; QLIST_ENTRY(VncRectEntry) next; }; struct VncJob { VncState *vs; QLIST_HEAD(, VncRectEntry) rectangles; QTAILQ_ENTRY(VncJob) next; }; #else struct VncJob { VncState *vs; int rectangles; size_t saved_offset; }; #endif struct VncState { int csock; DisplayState *ds; DECLARE_BITMAP(dirty[VNC_MAX_HEIGHT], VNC_DIRTY_BITS); uint8_t **lossy_rect; /* Not an Array to avoid costly memcpy in * vnc-jobs-async.c */ VncDisplay *vd; int need_update; int force_update; uint32_t features; int absolute; int last_x; int last_y; int client_width; int client_height; VncShareMode share_mode; uint32_t vnc_encoding; int major; int minor; int auth; char challenge[VNC_AUTH_CHALLENGE_SIZE]; #ifdef CONFIG_VNC_TLS int subauth; /* Used by VeNCrypt */ VncStateTLS tls; #endif #ifdef CONFIG_VNC_SASL VncStateSASL sasl; #endif QObject *info; Buffer output; Buffer input; /* current output mode information */ VncWritePixels *write_pixels; DisplaySurface clientds; CaptureVoiceOut *audio_cap; struct audsettings as; VncReadEvent *read_handler; size_t read_handler_expect; /* input */ uint8_t modifiers_state[256]; QEMUPutLEDEntry *led; bool abort; #ifndef CONFIG_VNC_THREAD VncJob job; #else QemuMutex output_mutex; QEMUBH *bh; Buffer jobs_buffer; #endif /* Encoding specific, if you add something here, don't forget to * update vnc_async_encoding_start() */ VncTight tight; VncZlib zlib; VncHextile hextile; VncZrle zrle; VncZywrle zywrle; Notifier mouse_mode_notifier; QTAILQ_ENTRY(VncState) next; }; /***************************************************************************** * * Authentication modes * *****************************************************************************/ enum { VNC_AUTH_INVALID = 0, VNC_AUTH_NONE = 1, VNC_AUTH_VNC = 2, VNC_AUTH_RA2 = 5, VNC_AUTH_RA2NE = 6, VNC_AUTH_TIGHT = 16, VNC_AUTH_ULTRA = 17, VNC_AUTH_TLS = 18, /* Supported in GTK-VNC & VINO */ VNC_AUTH_VENCRYPT = 19, /* Supported in GTK-VNC & VeNCrypt */ VNC_AUTH_SASL = 20, /* Supported in GTK-VNC & VINO */ }; enum { VNC_AUTH_VENCRYPT_PLAIN = 256, VNC_AUTH_VENCRYPT_TLSNONE = 257, VNC_AUTH_VENCRYPT_TLSVNC = 258, VNC_AUTH_VENCRYPT_TLSPLAIN = 259, VNC_AUTH_VENCRYPT_X509NONE = 260, VNC_AUTH_VENCRYPT_X509VNC = 261, VNC_AUTH_VENCRYPT_X509PLAIN = 262, VNC_AUTH_VENCRYPT_X509SASL = 263, VNC_AUTH_VENCRYPT_TLSSASL = 264, }; /***************************************************************************** * * Encoding types * *****************************************************************************/ #define VNC_ENCODING_RAW 0x00000000 #define VNC_ENCODING_COPYRECT 0x00000001 #define VNC_ENCODING_RRE 0x00000002 #define VNC_ENCODING_CORRE 0x00000004 #define VNC_ENCODING_HEXTILE 0x00000005 #define VNC_ENCODING_ZLIB 0x00000006 #define VNC_ENCODING_TIGHT 0x00000007 #define VNC_ENCODING_ZLIBHEX 0x00000008 #define VNC_ENCODING_TRLE 0x0000000f #define VNC_ENCODING_ZRLE 0x00000010 #define VNC_ENCODING_ZYWRLE 0x00000011 #define VNC_ENCODING_COMPRESSLEVEL0 0xFFFFFF00 /* -256 */ #define VNC_ENCODING_QUALITYLEVEL0 0xFFFFFFE0 /* -32 */ #define VNC_ENCODING_XCURSOR 0xFFFFFF10 /* -240 */ #define VNC_ENCODING_RICH_CURSOR 0xFFFFFF11 /* -239 */ #define VNC_ENCODING_POINTER_POS 0xFFFFFF18 /* -232 */ #define VNC_ENCODING_LASTRECT 0xFFFFFF20 /* -224 */ #define VNC_ENCODING_DESKTOPRESIZE 0xFFFFFF21 /* -223 */ #define VNC_ENCODING_POINTER_TYPE_CHANGE 0XFFFFFEFF /* -257 */ #define VNC_ENCODING_EXT_KEY_EVENT 0XFFFFFEFE /* -258 */ #define VNC_ENCODING_AUDIO 0XFFFFFEFD /* -259 */ #define VNC_ENCODING_TIGHT_PNG 0xFFFFFEFC /* -260 */ #define VNC_ENCODING_WMVi 0x574D5669 /***************************************************************************** * * Other tight constants * *****************************************************************************/ /* * Vendors known by TightVNC: standard VNC/RealVNC, TridiaVNC, and TightVNC. */ #define VNC_TIGHT_CCB_RESET_MASK (0x0f) #define VNC_TIGHT_CCB_TYPE_MASK (0x0f << 4) #define VNC_TIGHT_CCB_TYPE_FILL (0x08 << 4) #define VNC_TIGHT_CCB_TYPE_JPEG (0x09 << 4) #define VNC_TIGHT_CCB_TYPE_PNG (0x0A << 4) #define VNC_TIGHT_CCB_BASIC_MAX (0x07 << 4) #define VNC_TIGHT_CCB_BASIC_ZLIB (0x03 << 4) #define VNC_TIGHT_CCB_BASIC_FILTER (0x04 << 4) /***************************************************************************** * * Features * *****************************************************************************/ #define VNC_FEATURE_RESIZE 0 #define VNC_FEATURE_HEXTILE 1 #define VNC_FEATURE_POINTER_TYPE_CHANGE 2 #define VNC_FEATURE_WMVI 3 #define VNC_FEATURE_TIGHT 4 #define VNC_FEATURE_ZLIB 5 #define VNC_FEATURE_COPYRECT 6 #define VNC_FEATURE_RICH_CURSOR 7 #define VNC_FEATURE_TIGHT_PNG 8 #define VNC_FEATURE_ZRLE 9 #define VNC_FEATURE_ZYWRLE 10 #define VNC_FEATURE_RESIZE_MASK (1 << VNC_FEATURE_RESIZE) #define VNC_FEATURE_HEXTILE_MASK (1 << VNC_FEATURE_HEXTILE) #define VNC_FEATURE_POINTER_TYPE_CHANGE_MASK (1 << VNC_FEATURE_POINTER_TYPE_CHANGE) #define VNC_FEATURE_WMVI_MASK (1 << VNC_FEATURE_WMVI) #define VNC_FEATURE_TIGHT_MASK (1 << VNC_FEATURE_TIGHT) #define VNC_FEATURE_ZLIB_MASK (1 << VNC_FEATURE_ZLIB) #define VNC_FEATURE_COPYRECT_MASK (1 << VNC_FEATURE_COPYRECT) #define VNC_FEATURE_RICH_CURSOR_MASK (1 << VNC_FEATURE_RICH_CURSOR) #define VNC_FEATURE_TIGHT_PNG_MASK (1 << VNC_FEATURE_TIGHT_PNG) #define VNC_FEATURE_ZRLE_MASK (1 << VNC_FEATURE_ZRLE) #define VNC_FEATURE_ZYWRLE_MASK (1 << VNC_FEATURE_ZYWRLE) /* Client -> Server message IDs */ #define VNC_MSG_CLIENT_SET_PIXEL_FORMAT 0 #define VNC_MSG_CLIENT_SET_ENCODINGS 2 #define VNC_MSG_CLIENT_FRAMEBUFFER_UPDATE_REQUEST 3 #define VNC_MSG_CLIENT_KEY_EVENT 4 #define VNC_MSG_CLIENT_POINTER_EVENT 5 #define VNC_MSG_CLIENT_CUT_TEXT 6 #define VNC_MSG_CLIENT_VMWARE_0 127 #define VNC_MSG_CLIENT_CALL_CONTROL 249 #define VNC_MSG_CLIENT_XVP 250 #define VNC_MSG_CLIENT_SET_DESKTOP_SIZE 251 #define VNC_MSG_CLIENT_TIGHT 252 #define VNC_MSG_CLIENT_GII 253 #define VNC_MSG_CLIENT_VMWARE_1 254 #define VNC_MSG_CLIENT_QEMU 255 /* Server -> Client message IDs */ #define VNC_MSG_SERVER_FRAMEBUFFER_UPDATE 0 #define VNC_MSG_SERVER_SET_COLOUR_MAP_ENTRIES 1 #define VNC_MSG_SERVER_BELL 2 #define VNC_MSG_SERVER_CUT_TEXT 3 #define VNC_MSG_SERVER_VMWARE_0 127 #define VNC_MSG_SERVER_CALL_CONTROL 249 #define VNC_MSG_SERVER_XVP 250 #define VNC_MSG_SERVER_TIGHT 252 #define VNC_MSG_SERVER_GII 253 #define VNC_MSG_SERVER_VMWARE_1 254 #define VNC_MSG_SERVER_QEMU 255 /* QEMU client -> server message IDs */ #define VNC_MSG_CLIENT_QEMU_EXT_KEY_EVENT 0 #define VNC_MSG_CLIENT_QEMU_AUDIO 1 /* QEMU server -> client message IDs */ #define VNC_MSG_SERVER_QEMU_AUDIO 1 /* QEMU client -> server audio message IDs */ #define VNC_MSG_CLIENT_QEMU_AUDIO_ENABLE 0 #define VNC_MSG_CLIENT_QEMU_AUDIO_DISABLE 1 #define VNC_MSG_CLIENT_QEMU_AUDIO_SET_FORMAT 2 /* QEMU server -> client audio message IDs */ #define VNC_MSG_SERVER_QEMU_AUDIO_END 0 #define VNC_MSG_SERVER_QEMU_AUDIO_BEGIN 1 #define VNC_MSG_SERVER_QEMU_AUDIO_DATA 2 /***************************************************************************** * * Internal APIs * *****************************************************************************/ /* Event loop functions */ void vnc_client_read(void *opaque); void vnc_client_write(void *opaque); long vnc_client_read_buf(VncState *vs, uint8_t *data, size_t datalen); long vnc_client_write_buf(VncState *vs, const uint8_t *data, size_t datalen); /* Protocol I/O functions */ void vnc_write(VncState *vs, const void *data, size_t len); void vnc_write_u32(VncState *vs, uint32_t value); void vnc_write_s32(VncState *vs, int32_t value); void vnc_write_u16(VncState *vs, uint16_t value); void vnc_write_u8(VncState *vs, uint8_t value); void vnc_flush(VncState *vs); void vnc_read_when(VncState *vs, VncReadEvent *func, size_t expecting); /* Buffer I/O functions */ uint8_t read_u8(uint8_t *data, size_t offset); uint16_t read_u16(uint8_t *data, size_t offset); int32_t read_s32(uint8_t *data, size_t offset); uint32_t read_u32(uint8_t *data, size_t offset); /* Protocol stage functions */ void vnc_client_error(VncState *vs); int vnc_client_io_error(VncState *vs, int ret, int last_errno); void start_client_init(VncState *vs); void start_auth_vnc(VncState *vs); /* Buffer management */ void buffer_reserve(Buffer *buffer, size_t len); int buffer_empty(Buffer *buffer); uint8_t *buffer_end(Buffer *buffer); void buffer_reset(Buffer *buffer); void buffer_free(Buffer *buffer); void buffer_append(Buffer *buffer, const void *data, size_t len); /* Misc helpers */ char *vnc_socket_local_addr(const char *format, int fd); char *vnc_socket_remote_addr(const char *format, int fd); static inline uint32_t vnc_has_feature(VncState *vs, int feature) { return (vs->features & (1 << feature)); } /* Framebuffer */ void vnc_framebuffer_update(VncState *vs, int x, int y, int w, int h, int32_t encoding); void vnc_convert_pixel(VncState *vs, uint8_t *buf, uint32_t v); double vnc_update_freq(VncState *vs, int x, int y, int w, int h); void vnc_sent_lossy_rect(VncState *vs, int x, int y, int w, int h); /* Encodings */ int vnc_send_framebuffer_update(VncState *vs, int x, int y, int w, int h); int vnc_raw_send_framebuffer_update(VncState *vs, int x, int y, int w, int h); int vnc_hextile_send_framebuffer_update(VncState *vs, int x, int y, int w, int h); void vnc_hextile_set_pixel_conversion(VncState *vs, int generic); void *vnc_zlib_zalloc(void *x, unsigned items, unsigned size); void vnc_zlib_zfree(void *x, void *addr); int vnc_zlib_send_framebuffer_update(VncState *vs, int x, int y, int w, int h); void vnc_zlib_clear(VncState *vs); int vnc_tight_send_framebuffer_update(VncState *vs, int x, int y, int w, int h); int vnc_tight_png_send_framebuffer_update(VncState *vs, int x, int y, int w, int h); void vnc_tight_clear(VncState *vs); int vnc_zrle_send_framebuffer_update(VncState *vs, int x, int y, int w, int h); int vnc_zywrle_send_framebuffer_update(VncState *vs, int x, int y, int w, int h); void vnc_zrle_clear(VncState *vs); #endif /* __QEMU_VNC_H */