/*  * This file is part of the UCB release of Plan 9. It is subject to the license * terms in the LICENSE file found in the top-level directory of this * distribution and at http://akaros.cs.berkeley.edu/files/Plan9License. No * part of the UCB release of Plan 9, including this file, may be copied, * modified, propagated, or distributed except according to the terms contained * in the LICENSE file. */ #include <u.h>#include <libc.h>#include <bio.h>#include <draw.h>#include <memdraw.h> typedef struct Pixfmt	Pixfmt;typedef struct Colorfmt	Colorfmt;typedef struct Vnc	Vnc; struct Colorfmt {	int		max;	int		shift;}; struct Pixfmt {	int		bpp;	int		depth;	int		bigendian;	int		truecolor;	Colorfmt	red;	Colorfmt	green;	Colorfmt	blue;}; struct Vnc {	QLock;	int		datafd;			/* for network connection */	int		ctlfd;			/* control for network connection */ 	Biobuf		in;	Biobuf		out; 	Point		dim;	Pixfmt;	char		*name;	/* client only */}; enum {	/* authentication negotiation */	AFailed		= 0,	ANoAuth,	AVncAuth, 	/* vnc auth negotiation */	VncAuthOK	= 0,	VncAuthFailed,	VncAuthTooMany,	VncChalLen	= 16, 	/* server to client */	MFrameUpdate	= 0,	MSetCmap,	MBell,	MSCut,	MSAck, 	/* client to server */	MPixFmt		= 0,	MFixCmap,	MSetEnc,	MFrameReq,	MKey,	MMouse,	MCCut, 	/* image encoding methods */	EncRaw		= 0,	EncCopyRect	= 1,	EncRre		= 2,	EncCorre	= 4,	EncHextile	= 5,	EncZlib		= 6,  /* 6,7,8 have been used by others */	EncTight	= 7,	EncZHextile	= 8,	EncMouseWarp	= 9, 	/* paramaters for hextile encoding */	HextileDim	= 16,	HextileRaw	= 1,	HextileBack	= 2,	HextileFore	= 4,	HextileRects	= 8,	HextileCols	= 16}; /* * we're only using the ulong as a place to store bytes, * and as something to compare against. * the bytes are stored in little-endian format. */typedef ulong Color; /* auth.c */extern	int		vncauth(Vnc*, char*);extern	int		vnchandshake(Vnc*);extern	int		vncsrvauth(Vnc*);extern	int		vncsrvhandshake(Vnc*); /* proto.c */extern	Vnc*		vncinit(int, int, Vnc*);extern	uchar		vncrdchar(Vnc*);extern	ushort		vncrdshort(Vnc*);extern	ulong		vncrdlong(Vnc*);extern	Point		vncrdpoint(Vnc*);extern	Rectangle	vncrdrect(Vnc*);extern	Rectangle	vncrdcorect(Vnc*);extern	Pixfmt		vncrdpixfmt(Vnc*);extern	void		vncrdbytes(Vnc*, void*, int);extern	char*		vncrdstring(Vnc*);extern	char*	vncrdstringx(Vnc*);extern	void		vncwrstring(Vnc*, char*);extern  void    	vncgobble(Vnc*, long); extern	void		vncflush(Vnc*);extern	void		vncterm(Vnc*);extern	void		vncwrbytes(Vnc*, void*, int);extern	void		vncwrlong(Vnc*, ulong);extern	void		vncwrshort(Vnc*, ushort);extern	void		vncwrchar(Vnc*, uchar);extern	void		vncwrpixfmt(Vnc*, Pixfmt*);extern	void		vncwrrect(Vnc*, Rectangle);extern	void		vncwrpoint(Vnc*, Point); extern	void		vnclock(Vnc*);		/* for writing */extern	void		vncunlock(Vnc*); extern	void		hexdump(void*, int); /* implemented by clients of the io library */extern	void		vnchungup(Vnc*); extern	int		verbose;extern	char*	serveraddr;