typedef	struct	Rdp Rdp;typedef	struct	Vchan Vchan;typedef	struct	Msg Msg;typedef	struct	Share Share;typedef	struct	Caps Caps;typedef	struct	Imgupd Imgupd; enum{	MAXTPDU=	16386,	/* max TPDU size */}; struct Rdp{	int		fd;			/* connection I/O descriptor */	long		sproto;		/* magic to bounce back to server */	char		*label;		/* window label */	char		*local;		/* local system name */	char		*user;		/* user name for auto logon  */	char		*windom;		/* domain for auto logon */	char		*passwd;		/* password for auto logon (sic) */	char		*shell;		/* remote shell override */	char		*rwd;		/* remote working directory */	int		xsz;			/* rfb dimensions */	int		ysz;			/* rfb dimensions */	int		depth;		/* rfb color depth */	int		hupreason;	/* hangup reason as server explains */	int		mcsuid;		/* MCS [T.122] userId */	int		userchan;		/* MCS user channelId */	int		srvchan;		/* MCS server channel ID */	int		shareid;		/* share ID - [T128] section 8.4.2 */	int		active;		/* T.128 action state */	int		wantconsole;	/* attach to the console sesstion */	Vchan	*vc;			/* static virtual channels table */	uint		nvc;			/* number of vctab entries */	uchar	cmap[256];	/* rfb color map for depths ≤ 8 */	uchar	rbuf[MAXTPDU];	/* read buffer */	};int	starttls(Rdp*);int	rdphandshake(Rdp*);int	x224handshake(Rdp*);int	x224hangup(Rdp*);void	sendclientinfo(Rdp*);void	confirmactive(Rdp*);void	assync(Rdp*);void	asctl(Rdp*,int);void	asfontls(Rdp*);void	act(Rdp*,ulong,int,int,int,int);void	turnupdates(Rdp*, int);void	erectdom(Rdp*);void	readnet(Rdp*);void	clipannounce(Rdp*);void	clipvcfn(Rdp*, uchar*,uint);void	audiovcfn(Rdp*, uchar*,uint);void	pollsnarf(Rdp*); void	initscreen(Rdp*);void	readkbd(Rdp*);void	sendkbd(Rdp*, Rune);void	readdevmouse(Rdp*);void	eresized(Rdp*, int); struct Vchan{	int		mcsid;		/* MCS channelId */	int		flags;	char		name[8];	uchar	*buf;			/* defragmentation buffer */	int		nb;			/* sizeof buf */	int		pos;			/* next fragment offset */ 	void		(*fn)(Rdp*,uchar*,uint);};void		initvc(Rdp*);int		sendvc(Rdp*,char*,uchar*,int); struct Caps{	int	general;	int	canrefresh;	int	cansupress; 	int	bitmap;	int	depth;	int	xsz;	int	ysz;};int	getcaps(Caps*,uchar*,uint);int	sizecaps(Caps*);int	putcaps(uchar*,uint,Caps*); enum /* Msg.type */{	Xconnect=1, 	/* C: X.224 connect request */	Xconnected,	/* S: X.224 connection confirm */	Xhangup,  	/* C: X.224 disconnection request */	Mattach,   	/* C: MCS (T.125) Attach User Request */	Mattached,	/* S: MCS Attach User Confirm */	Mjoin,	/* C: MCS Channel Join Request */	Mjoined,		/* S: MCS Channel Join Confirm */	Merectdom,	/* C: MCS Erect Domain Request */	Mconnect,	/* C: MCS Connect Initial + GCC Confce Create Req */	Mconnected,	/* S: MCS Connect Response + GCC Confce Create Resp */	Mactivated,	/* C: MCS Confirm Active */	Mclosing,		/* S: Disconnect Provider Ultimatum */	Mvchan,		/* S,C: MCS virtual channel data, raw */	Async,		/* C: MPAS 2.2.1.14 Client Synchronize PDU */	Actl,			/* C: MPAS 2.2.1.15 Control PDU */	Afontls,		/* C: MPAS 2.2.1.18 Client Font List PDU */	Ainput,      	/* C: MPAS (T.128) Input Event */	Aupdate,		/* S: T.128 ASPDU or a "Fast-Path" RDP PDU */	Aflow,		/* S: T.128 Flow PDU */	Dclientinfo,	/* C: RDP 2.2.1.11 Client Info */	Dsupress,		/* C: RDP 2.2.11.3 Suppress Output PDU */	Lneedlicense,	/* S: Licensing PDU */	Lreq,			/* C: Licensing PDU */	Lhavechal,	/* S: Licensing PDU */	Lnolicense,	/* C: Licensing PDU */	Ldone,		/* S: Licensing PDU */}; enum /* Msg.negproto - for msg.c x224.c */{	ProtoTLS= 	1,	ProtoCSSP=	2,	ProtoUAUTH=	8,}; struct Msg {	int	type;	int	negproto;	/* Xconnect, Xconnected */	int	mcsuid;	/* Mattached, Mjoin, Mactivated, Async & more */	int	chanid;	/* Mjoin, Mvchan */	int	originid;	/* Mactivated, Async, Actl, Afontls, Ainput, Dsupress */	int	shareid;	/* Mactivated, Async, Actl, Afontls, Ainput, Dsupress */	int	ver;	/* Mconnect, Mconnected */	int	xsz;	/* Mconnect, Dsupress, Mactivated */	int	ysz;	/* Mconnect, Dsupress, Mactivated */	int	depth;	/* Mconnect, Dsupress, Mactivated */	char	*sysname;	/* Mconnect, Dclientinfo, Lreq */	int	sproto;	/* Mconnect */	int	wantconsole;	/* Mconnect */	uint	nvc;	/* Mconnect */	Vchan	*vctab;	/* Mconnect */	char	*dom;	/* Dclientinfo*/	char	*user;	/* Dclientinfo, Lreq */	char	*pass;	/* Dclientinfo */	char	*rshell;	/* Dclientinfo */	char	*rwd;	/* Dclientinfo */	int	dologin;	/* Dclientinfo */	int	mtype;	/* Ainput */	ulong	msec;	/* Ainput */	ulong	flags;	/* Ainput, Mvchan */	int	iarg[2];	/* Ainput */	int	action;	/* Actl */	int	allow;	/* Dsupress */	uchar*	data;	/* Mvchan, Aupdate */	uint	ndata;	/* Mvchan, Aupdate */	uint	len;	/* Mvchan */	int	(*getshare)(Share*, uchar*, uint);	/* Aupdate */}; typedef	int	Msgget(Msg*,uchar*,uint);typedef	int	Msgput(uchar*,uint,Msg*); Msgget	getmsg;Msgput	putmsg;int	readmsg(Rdp*,Msg*);int	writemsg(Rdp*,Msg*); int	sizegccr(Msg*);Msgget	getmcr;Msgput	putgccr;Msgput	putclientinfo;Msgput	putconfirmactive; int	sizelicensemsg(Msg*);Msgget	getlicensemsg;Msgput	putlicensemsg;void 	respondlicense(Rdp*,Msg*);void	apply(Rdp* c, Msg* m); enum /* Share.type */{	ShActivate=	1,	ShDeactivate,	ShUorders,	ShUimg,	ShUcmap,	ShUwarp,	ShSync,	ShCtl,	ShFmap,	ShEinfo,}; struct Share{	int	type;	int	source;	int	shareid;	int	ncap;	int	nr;	int	x;	int	y;	int	err;	uchar* data;	uint	ndata;};int	getshareT(Share*, uchar*, uint);	/* T.128 ASPDU updates */int	getshareF(Share*, uchar*, uint);	/* RDP Fast-Path updates */ void	activate(Rdp*,Share*);void	deactivate(Rdp*,Share*);void	finalhandshake(Rdp*);void	drawimgupdate(Rdp*,Share*);void	loadcmap(Rdp*,Share*); enum /* Imgupd.type */{	Ubitmap,	Uscrblt,	Umemblt,	Ucacheimg,	Umcache,};struct Imgupd{	int	type;	int	x;	int	y;	int	xm;	int	ym;	int	xsz;	int	ysz;	int	depth;	int	clip;	int	compressed;	int	cid;	int	coff;	int	sx;	int	sy;	int	cx;	int	cy;	int	cxsz;	int	cysz;	int	nbytes;	uchar*	bytes;};int	getimgupd(Imgupd*, uchar*, uint);int	getfupd(Imgupd*, uchar*, uint); enum {	/* 2.2.8.1.1.2.1 Basic (TS_SECURITY_HEADER) */	Scrypt			= 0x0008,	Sinfopk			= 0x0040,	Slicensepk		= 0x0080, 	/* 2.2.8.1.1.3.1.1 Slow-Path Input Event (TS_INPUT_EVENT) */	InputSync=	0,	InputKeycode=	4,	InputUnicode=	5,	InputMouse=	0x8001, 	/* 2.2.1.15.1 Control PDU Data */	CAreqctl=	1,	CAcooperate=	4, 	GLOBALCHAN=	1003,	/* MCS global channel id */ 	TPKTFIXLEN=		4,	TPDATAFIXLEN=	(TPKTFIXLEN+3),	MCSCIFIXLEN=		(18+3*2+24*4), 	SECHSIZE=	4,	SCHSIZE=		6,	SCDSIZE=		SCHSIZE+4+4+2*2, 	NumOrders=		32,}; extern uchar	orderSupport[NumOrders]; extern char	Eshort[];extern char	Ebignum[];extern char	Esmall[];  enum /* X.224 PDU codes */{	ConReq=		0xE0, 		/* connection request */	ConCfrm=	0xD0,		/* connection confirm */	HupReq=		0x80,		/* disconnection request */	Data=		0xF0,		/* data */	Err=			0x70,		/* error */}; enum /* ASN.1 tag numbers for MCS types */{	Mci=		101,		/* Connect Initial */	Mcr=	102,		/* Connect Response */	Medr=	1,		/* Erect Domain Request */	Maur=	10,		/* Attach User Request */	Mauc=	11,		/* Attach User Confirm */	Mcjr=	14,		/* Channel Join Request */	Mcjc=	15,		/* Channel Join Confirm */	Msdr=	25,		/* Send Data Request */	Msdi=	26,		/* Send Data Indication */	Mdpu=	8,		/* Disconnect Provider Ultimatum */}; enum /* 2.2.8.1.1.1.2 Share Data Header (TS_SHAREDATAHEADER) */{	ADdraw=	2,	ADctl=	20,	ADcursor=	27,	ADinput=		28,	ADsync=	31,	ADrefresh=	33,	ADsupress=	35,	ADfontlist=	39,	ADfontmap=	40,	ADerrx=	47,};