/* * 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 "console.h" #include "monitor.h" #include "audio/audio.h" #include <zlib.h> #include "keymaps.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 int VncReadEvent(VncState *vs, uint8_t *data, size_t len); typedef void VncWritePixels(VncState *vs, 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); #define VNC_MAX_WIDTH 2048 #define VNC_MAX_HEIGHT 2048 #define VNC_DIRTY_WORDS (VNC_MAX_WIDTH / (16 * 32)) #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 VncSurface { uint32_t dirty[VNC_MAX_HEIGHT][VNC_DIRTY_WORDS]; DisplaySurface *ds; }; struct VncDisplay { QEMUTimer *timer; int timer_interval; int lsock; DisplayState *ds; VncState *clients; kbd_layout_t *kbd_layout; struct VncSurface guest; /* guest visible surface (aka ds->surface) */ DisplaySurface *server; /* vnc server surface */ char *display; char *password; int auth; #ifdef CONFIG_VNC_TLS int subauth; /* Used by VeNCrypt */ VncDisplayTLS tls; #endif #ifdef CONFIG_VNC_SASL VncDisplaySASL sasl; #endif }; struct VncState { int csock; DisplayState *ds; uint32_t dirty[VNC_MAX_HEIGHT][VNC_DIRTY_WORDS]; VncDisplay *vd; int need_update; int force_update; uint32_t features; int absolute; int last_x; int last_y; uint32_t vnc_encoding; uint8_t tight_quality; uint8_t tight_compression; int major; int minor; char challenge[VNC_AUTH_CHALLENGE_SIZE]; #ifdef CONFIG_VNC_TLS VncStateTLS tls; #endif #ifdef CONFIG_VNC_SASL VncStateSASL sasl; #endif Buffer output; Buffer input; /* current output mode information */ VncWritePixels *write_pixels; VncSendHextileTile *send_hextile_tile; DisplaySurface clientds; CaptureVoiceOut *audio_cap; struct audsettings as; VncReadEvent *read_handler; size_t read_handler_expect; /* input */ uint8_t modifiers_state[256]; Buffer zlib; Buffer zlib_tmp; z_stream zlib_stream[4]; 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_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_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_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) /***************************************************************************** * * 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_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); #endif /* __QEMU_VNC_H */