path: root/x11vnc/x11vnc.h

#ifndef _X11VNC_X11VNC_H
#define _X11VNC_X11VNC_H

/* -- x11vnc.h -- */
/* 
 * These ' -- filename.[ch] -- ' comments represent a partial cleanup:
 * they are an odd way to indicate how this huge file would be split up
 * someday into multiple files.
 *
 * The primary reason we have not broken up this file is for user
 * convenience: those wanting to use the latest version download a single
 * file, x11vnc.c, and off they go...
 */

/****************************************************************************/

/* Standard includes and libvncserver */

#include <unistd.h>
#include <signal.h>
#include <sys/utsname.h>
#include <time.h>
#include <errno.h>

#include <X11/Xlib.h>
#include <X11/Xutil.h>

#include <X11/keysym.h>
#include <X11/Xatom.h>

#include <sys/stat.h>
#include <fcntl.h>
#include <ctype.h>

#include <rfb/rfb.h>
#include <rfb/rfbregion.h>

/****************************************************************************/

/* Build-time customization via CPPFLAGS. */

/*
 * Summary of options to include in CPPFLAGS for custom builds:
 *
 * -DVNCSHARED  to have the vnc display shared by default.
 * -DFOREVER  to have -forever on by default.
 * -DNOREPEAT=0  to have -repeat on by default.
 * -DADDKEYSYMS=0  to have -noadd_keysyms the default.
 *
 * -DREMOTE_DEFAULT=0  to disable remote-control on by default (-yesremote).
 * -DREMOTE_CONTROL=0  to disable remote-control mechanism completely.
 * -DEXTERNAL_COMMANDS=0  to disable the running of all external commands.
 * -DFILEXFER=0  disable filexfer.
 *
 * -DHARDWIRE_PASSWD=...      hardwired passwords, quoting necessary.
 * -DHARDWIRE_VIEWPASSWD=...
 * -DNOPW=1                   make -nopw the default (skip warning)
 * -DPASSWD_REQUIRED=1        exit unless a password is supplied.
 * -DPASSWD_UNLESS_NOPW=1     exit unless a password is supplied and no -nopw.
 *
 * -DWIREFRAME=0  to have -nowireframe as the default.
 * -DWIREFRAME_COPYRECT=0  to have -nowirecopyrect as the default.
 * -DWIREFRAME_PARMS=...   set default -wirecopyrect parameters.
 * -DSCROLL_COPYRECT=0     to have -noscrollcopyrect as the default.
 * -DSCROLL_COPYRECT_PARMS=...  set default -scrollcopyrect parameters.
 * -DXDAMAGE=0    to have -noxdamage as the default.
 * -DSKIPDUPS=0   to have -noskip_dups as the default or vice versa.
 *
 * -DPOINTER_MODE_DEFAULT={0,1,2,3,4}  set default -pointer_mode.
 * -DBOLDLY_CLOSE_DISPLAY=0  to not close X DISPLAY under -rawfb.
 * -DSMALL_FOOTPRINT=1  for smaller binary size (no help, no gui, etc) 
 *                      use 2 or 3 for even smaller footprint.
 * -DNOGUI  do not include the gui tkx11vnc.
 *
 * Set these in CPPFLAGS before running configure. E.g.:
 *
 *   % env CPPFLAGS="-DFOREVER -DREMOTE_CONTROL=0" ./configure
 *   % make
 */

/*
 * This can be used to disable the remote control mechanism.
 */
#ifndef REMOTE_CONTROL
#define REMOTE_CONTROL 1
#endif

#ifndef NOPW
#define NOPW 0
#endif

#ifndef PASSWD_REQUIRED
#define PASSWD_REQUIRED 0
#endif

#ifndef PASSWD_UNLESS_NOPW
#define PASSWD_UNLESS_NOPW 0
#endif

/*
 * Beginning of support for small binary footprint build for embedded
 * systems, PDA's etc.  It currently just cuts out the low-hanging
 * fruit (large text passages).  Set to 2, 3 to cut out some of the
 * more esoteric extensions.  More tedious is to modify LDFLAGS in the
 * Makefile to not link against the extension libraries... but that
 * should be done too (manually for now).
 *
 * If there is interest more of the bloat can be removed...  Currently
 * these shrink the binary from 500K to about 270K.
 */
#ifndef SMALL_FOOTPRINT
#define SMALL_FOOTPRINT 0
#endif

#if SMALL_FOOTPRINT
#define NOGUI
#endif

#if (SMALL_FOOTPRINT > 1)
#undef LIBVNCSERVER_HAVE_XKEYBOARD
#undef LIBVNCSERVER_HAVE_LIBXINERAMA
#undef LIBVNCSERVER_HAVE_LIBXRANDR
#undef LIBVNCSERVER_HAVE_LIBXFIXES
#undef LIBVNCSERVER_HAVE_LIBXDAMAGE
#define LIBVNCSERVER_HAVE_XKEYBOARD 0
#define LIBVNCSERVER_HAVE_LIBXINERAMA 0
#define LIBVNCSERVER_HAVE_LIBXRANDR 0
#define LIBVNCSERVER_HAVE_LIBXFIXES 0
#define LIBVNCSERVER_HAVE_LIBXDAMAGE 0
#endif

#if (SMALL_FOOTPRINT > 2)
#undef LIBVNCSERVER_HAVE_UTMPX_H
#undef LIBVNCSERVER_HAVE_PWD_H
#undef REMOTE_CONTROL
#define LIBVNCSERVER_HAVE_UTMPX_H 0
#define LIBVNCSERVER_HAVE_PWD_H 0
#define REMOTE_CONTROL 0
#endif

/*
 * Not recommended unless you know what you are getting into, but if you
 * define the HARDWIRE_PASSWD or HARDWIRE_VIEWPASSWD variables here or in
 * CPPFLAGS you can set a default -passwd and -viewpasswd string values,
 * perhaps this would be better than nothing on an embedded system, etc.
 * These default values will be overridden by the command line.
 * We don't even give an example ;-)
 */

/****************************************************************************/

/* Extensions and related includes: */

#if LIBVNCSERVER_HAVE_XSHM
#  if defined(__hpux) && defined(__ia64)  /* something weird on hp/itanic */
#    undef _INCLUDE_HPUX_SOURCE
#  endif
#include <sys/ipc.h>
#include <sys/shm.h>
#include <X11/extensions/XShm.h>
#endif

#if LIBVNCSERVER_HAVE_XTEST
#include <X11/extensions/XTest.h>
#endif
extern int xtest_base_event_type;

#if LIBVNCSERVER_HAVE_LIBXTRAP
#define NEED_EVENTS
#define NEED_REPLIES
#include <X11/extensions/xtraplib.h>
#include <X11/extensions/xtraplibp.h>
extern XETC *trap_ctx;
#endif
extern int xtrap_base_event_type;

#if LIBVNCSERVER_HAVE_RECORD
#include <X11/Xproto.h>
#include <X11/extensions/record.h>
#endif

#if LIBVNCSERVER_HAVE_XKEYBOARD
#include <X11/XKBlib.h>
#endif

#if LIBVNCSERVER_HAVE_LIBXINERAMA
#include <X11/extensions/Xinerama.h>
#endif

#if LIBVNCSERVER_HAVE_SYS_SOCKET_H
#include <sys/socket.h>
#endif

#include <netdb.h>
extern int h_errno;

#if LIBVNCSERVER_HAVE_NETINET_IN_H
#include <netinet/in.h>
#include <netinet/tcp.h>
#include <arpa/inet.h>
#endif

/* XXX autoconf */
#if LIBVNCSERVER_HAVE_PWD_H
#include <pwd.h>
#endif
#if LIBVNCSERVER_HAVE_SYS_WAIT_H
#include <sys/wait.h>
#endif
#if LIBVNCSERVER_HAVE_UTMPX_H
#include <utmpx.h>
#endif

#if LIBVNCSERVER_HAVE_MMAP
#include <sys/mman.h>
#endif

/*
 * overlay/multi-depth screen reading support
 * undef SOLARIS_OVERLAY or IRIX_OVERLAY if there are problems building.
 */

/* solaris/sun */
#if defined (__SVR4) && defined (__sun)
# define SOLARIS
# ifdef LIBVNCSERVER_HAVE_SOLARIS_XREADSCREEN
#  define SOLARIS_OVERLAY
#  define OVERLAY_OS
# endif
#endif

#ifdef SOLARIS_OVERLAY
#include <X11/extensions/transovl.h>
#endif

/* irix/sgi */
#if defined(__sgi)
# define IRIX
# ifdef LIBVNCSERVER_HAVE_IRIX_XREADDISPLAY
#  define IRIX_OVERLAY
#  define OVERLAY_OS
# endif
#endif

#ifdef IRIX_OVERLAY
#include <X11/extensions/readdisplay.h>
#endif

extern int overlay_present;

#if LIBVNCSERVER_HAVE_LIBXRANDR
#include <X11/extensions/Xrandr.h>
#endif
extern int xrandr_base_event_type;

#if LIBVNCSERVER_HAVE_LIBXFIXES
#include <X11/extensions/Xfixes.h>
#endif
extern int xfixes_base_event_type;

#if LIBVNCSERVER_HAVE_LIBXDAMAGE
#include <X11/extensions/Xdamage.h>
#endif
extern int xdamage_base_event_type;

extern char lastmod[];

/* X display info */

extern Display *dpy;		/* the single display screen we connect to */
extern int scr;
extern Window window, rootwin;		/* polled window, root window (usu. same) */
extern Visual *default_visual;		/* the default visual (unless -visual) */
extern int bpp, depth;
extern int indexed_color;
extern int dpy_x, dpy_y;		/* size of display */
extern int off_x, off_y;		/* offsets for -sid */
extern int wdpy_x, wdpy_y;		/* for actual sizes in case of -clip */
extern int cdpy_x, cdpy_y, coff_x, coff_y;	/* the -clip params */
extern int button_mask;		/* button state and info */
extern int button_mask_prev;
extern int num_buttons;

/* image structures */
extern XImage *scanline;
extern XImage *fullscreen;
extern XImage **tile_row;		/* for all possible row runs */
extern XImage *fb0;
extern XImage *snaprect;	/* for XShmGetImage (fs_factor) */
extern XImage *snap;		/* the full snap fb */
extern XImage *raw_fb_image;	/* the raw fb */

#if !LIBVNCSERVER_HAVE_XSHM
/*
 * for simplicity, define this struct since we'll never use them
 * under using_shm = 0.
 */
typedef struct {
	int shmid; char *shmaddr; Bool readOnly;
} XShmSegmentInfo;
#endif

/* corresponding shm structures */
extern XShmSegmentInfo scanline_shm;
extern XShmSegmentInfo fullscreen_shm;
extern XShmSegmentInfo *tile_row_shm;	/* for all possible row runs */
extern XShmSegmentInfo snaprect_shm;

/* rfb screen info */
extern rfbScreenInfoPtr screen;
extern char *rfb_desktop_name;
extern char *http_dir;
extern char vnc_desktop_name[];
extern char *main_fb;			/* our copy of the X11 fb */
extern char *rfb_fb;			/* same as main_fb unless transformation */
extern char *fake_fb;		/* used under -padgeom */
extern char *snap_fb;		/* used under -snapfb */
extern char *raw_fb;
extern char *raw_fb_addr;
extern int raw_fb_offset;
extern int raw_fb_shm;
extern int raw_fb_mmap;
extern int raw_fb_seek;
extern int raw_fb_fd;

extern int rfb_bytes_per_line;
extern int main_bytes_per_line;
extern unsigned long  main_red_mask,  main_green_mask,  main_blue_mask;
extern unsigned short main_red_max,   main_green_max,   main_blue_max;
extern unsigned short main_red_shift, main_green_shift, main_blue_shift;

/* scaling parameters */
extern char *scale_str;
extern double scale_fac;
extern int scaling;
extern int scaling_blend;		/* for no blending option (very course) */
extern int scaling_nomult4;		/* do not require width = n * 4 */
extern int scaling_pad;		/* pad out scaled sizes to fit denominator */
extern int scaling_interpolate;	/* use interpolation scheme when shrinking */
extern int scaled_x, scaled_y;		/* dimensions of scaled display */
extern int scale_numer, scale_denom;	/* n/m */

/* scale cursor */
extern char *scale_cursor_str;
extern double scale_cursor_fac;
extern int scaling_cursor;
extern int scaling_cursor_blend;
extern int scaling_cursor_interpolate;
extern int scale_cursor_numer, scale_cursor_denom;

/* size of the basic tile unit that is polled for changes: */
extern int tile_x;
extern int tile_y;
extern int ntiles, ntiles_x, ntiles_y;

/* arrays that indicate changed or checked tiles. */
extern unsigned char *tile_has_diff, *tile_tried, *tile_copied;
extern unsigned char *tile_has_xdamage_diff, *tile_row_has_xdamage_diff;

/* times of recent events */
extern time_t last_event, last_input, last_client;
extern time_t last_keyboard_input, last_pointer_input; 
extern time_t last_fb_bytes_sent;
extern double last_keyboard_time;
extern double last_pointer_time;
extern double last_pointer_click_time;
extern double last_pointer_motion_time;
extern double last_key_to_button_remap_time;
extern double last_copyrect;
extern double last_copyrect_fix;
extern double servertime_diff;
extern double x11vnc_start;

/* last client to move pointer */
extern rfbClientPtr last_pointer_client;

extern int client_count;
extern int clients_served;

/* more transient kludge variables: */
extern int cursor_x, cursor_y;		/* x and y from the viewer(s) */
extern int button_change_x, button_change_y;
extern int got_user_input;
extern int got_pointer_input;
extern int got_pointer_calls;
extern int got_keyboard_input;
extern int got_keyboard_calls;
extern int urgent_update;
extern int last_keyboard_keycode;
extern rfbBool last_rfb_down;
extern rfbBool last_rfb_key_accepted;
extern rfbKeySym last_rfb_keysym;
extern double last_rfb_keytime;
extern int fb_copy_in_progress;	
extern int drag_in_progress;	
extern int shut_down;	
extern int do_copy_screen;	
extern time_t damage_time;
extern int damage_delay;

extern int program_pid;
extern char *program_name;
extern char *program_cmdline;

extern struct utsname UT;

typedef struct hint {
	/* location x, y, height, and width of a change-rectangle  */
	/* (grows as adjacent horizontal tiles are glued together) */
	int x, y, w, h;
} hint_t;

/* struct with client specific data: */
#define CILEN 10
typedef struct _ClientData {
	int uid;
	char *hostname;
	char *username;
	int client_port;
	int server_port;
	char *server_ip;
	char input[CILEN];
	int login_viewonly;
	time_t login_time;

	int had_cursor_shape_updates;
	int had_cursor_pos_updates;

	double timer;
	double send_cmp_rate;
	double send_raw_rate;
	double latency;
	int cmp_bytes_sent;
	int raw_bytes_sent;
} ClientData;

#include "params.h"
#include "enums.h"
#include "options.h"
#include "util.h"

#endif /* _X11VNC_X11VNC_H */