#include <u.h>#include <libc.h>#include "dat.h"#include "fns.h" enum /* 2.2.7 Capability Sets; T.128 */{	CapGeneral=	1,	CapBitmap=	2,	CapOrder=	3,	CapPointer=	8,	CapBitcache2=	19,	CapInput=	13,	CapSound=	12,	CapGlyph=	16, 	/* 2.2.7.1.1 General Capability Set (TS_GENERAL_CAPABILITYSET) */	CanFastpath=	0x0001,	NoBitcomphdr=	0x0400,	CanLongcred=	0x0004,}; static int	putncap(uchar*,uint,Caps*);static int	putbitcaps(uchar*,uint,Caps*);static int	putgencaps(uchar*,uint,Caps*);static int	putordcaps(uchar*,uint,Caps*);static int	putbc2caps(uchar*,uint,Caps*);static int	putptrcaps(uchar*,uint,Caps*);static int	putinpcaps(uchar*,uint,Caps*);static int	putsndcaps(uchar*,uint,Caps*);static int	putglycaps(uchar*,uint,Caps*); staticstruct {	int	size;	int	(*putcap)(uchar*,uint,Caps*);} ctab[]={	{ 4,	putncap },	{ 24,	putgencaps },	{ 30,	putbitcaps },	{ 88,	putordcaps },	{ 40,	putbc2caps },	{ 8,	putptrcaps },	{ 88,	putinpcaps },	{ 8,	putsndcaps },	{ 52,	putglycaps },}; intgetcaps(Caps* caps, uchar* a, uint nb){	int ncap, type, len;	uchar *p, *ep;	int extraFlags; 	p = a;	ep = p+nb;	memset(caps, sizeof(*caps), 0); 	ncap = igets(p);	p += 4;	for(; ncap>0 && p+4<ep; ncap--){		type = igets(p+0);		len = igets(p+2);		if(p+len > ep){			werrstr("bad length in server's capability set");			return -1;		}		switch(type){		case CapGeneral:			/* 2.2.7.1.1 General Capability Set (TS_GENERAL_CAPABILITYSET) */			if(len < 24){				werrstr(Eshort);				return -1;			}			caps->general = 1;			extraFlags  = igets(p+14);			caps->canrefresh = p[22];			caps->cansupress = p[23];			USED(extraFlags);			break;		case CapBitmap:			/* 2.2.7.1.2 Bitmap Capability Set (TS_BITMAP_CAPABILITYSET) */			if(len < 16){				werrstr(Eshort);				return -1;			}			caps->bitmap = 1;			caps->depth = igets(p+4);			caps->xsz = igets(p+12);			caps->ysz = igets(p+14);			break;		}		p += len;	}	return p-a;} intsizecaps(Caps* caps){	int i, n; 	USED(caps);	n = 0;	for(i = 0; i < nelem(ctab); i++)		n += ctab[i].size;	return n;} intputcaps(uchar* a, uint nb, Caps* caps){	uchar *p, *ep;	int i, n; 	p = a;	ep = a+nb; 	for(i = 0; i < nelem(ctab); i++){		n = ctab[i].putcap(p, ep-p, caps);		if(n < 0)			return -1;		p += n;	}	return p-a;} static intputncap(uchar *p, uint nb, Caps* caps){	int ncap; 	USED(caps);	ncap = 8;		if(nb<4){		werrstr(Eshort);		return -1;	}	iputs(p, ncap);	iputs(p+2, 0);	return 4;} /* 2.2.7.1.1 General Capability Set (TS_GENERAL_CAPABILITYSET) */static intputgencaps(uchar *p, uint nb, Caps* caps){	int extraFlags; 	USED(caps);	extraFlags = 0		| CanFastpath		| NoBitcomphdr		| CanLongcred		;	if(nb<24){		werrstr(Eshort);		return -1;	}	iputs(p+0, CapGeneral);	iputs(p+2, 24);	// size	iputs(p+4, 0);	// OSMAJORTYPE_UNSPECIFIED	iputs(p+6, 0);	// OSMINORTYPE_UNSPECIFIED	iputs(p+8, 0x200);	// TS_CAPS_PROTOCOLVERSION	iputs(p+12, 0);	// generalCompressionTypes	iputs(p+14, extraFlags);	iputs(p+16, 0);	// updateCapabilityFlag	iputs(p+18, 0);	// remoteUnshareFlag 	iputs(p+20, 0);	// generalCompressionLevel	p[22] = 0;  	// refreshRectSupport - server only	p[23] = 0;  	// suppressOutputSupport - server only	return 24;}  /* 2.2.7.1.2 Bitmap Capability Set (TS_BITMAP_CAPABILITYSET) */static intputbitcaps(uchar *p, uint nb, Caps* caps){	if(nb < 30){		werrstr(Eshort);		return -1;	}	iputs(p+0, CapBitmap);	iputs(p+2, 30);	// size	iputs(p+4, caps->depth);	// preferredBitsPerPixel	iputs(p+6, 1);	// receive1BitPerPixel	iputs(p+8, 1);	// receive4BitsPerPixel	iputs(p+10, 1);	// receive8BitsPerPixel	iputs(p+12, caps->xsz);	// desktopWidth	iputs(p+14, caps->ysz);	// desktopHeight	iputs(p+16, 0);	// pad2octets 	iputs(p+18, 1);	// desktopResizeFlag 	iputs(p+20, 1);	// bitmapCompressionFlag 	iputs(p+22, 0);	// highColorFlags 	iputs(p+24, 1);	// drawingFlags 	iputs(p+26, 1);	// multipleRectangleSupport	iputs(p+26, 0);	// pad2octetsB	return 30;} /* 2.2.7.1.3 Order Capability Set (TS_ORDER_CAPABILITYSET) */static intputordcaps(uchar *p, uint nb, Caps* caps){	ushort orderFlags;	enum	{		NEGOTIATEORDERSUPPORT=		0x02,		ZEROBOUNDSDELTASSUPPORT=	0x08,		COLORINDEXSUPPORT=			0x20,		SOLIDPATTERNBRUSHONLY=		0x40,	}; 	USED(caps);	orderFlags = 0		| NEGOTIATEORDERSUPPORT		| ZEROBOUNDSDELTASSUPPORT		| COLORINDEXSUPPORT		| SOLIDPATTERNBRUSHONLY		;	if(nb<88){		werrstr(Eshort);		return -1;	}	iputs(p+0, CapOrder);	iputs(p+2, 88);	// size	memset(p+4, 16, 0);	// terminalDescriptor	iputl(p+20, 0);	// pad4octetsA 	iputs(p+24, 1);	// desktopSaveXGranularity 	iputs(p+26, 20);	// desktopSaveYGranularity 	iputs(p+28, 0);	// pad2octetsA	iputs(p+30, 1);	// maximumOrderLevel 	iputs(p+32, 0);	// numberFonts 	iputs(p+34, orderFlags);	memcpy(p+36, orderSupport, 32);	iputs(p+68, 0x6a1);	// textFlags	iputs(p+70, 0);	// orderSupportExFlags	iputl(p+72, 0);	// pad4octetsB	iputl(p+76, 480*480);	// desktopSaveSize	iputs(p+80, 0);	// pad2octetsC	iputs(p+82, 0);	// pad2octetsD	iputs(p+84, 0xe4);	// textANSICodePage	iputs(p+86, 0x04);	// pad2octetsE	return 88;} /* 2.2.7.1.4 Bitmap Cache Capability Set (TS_BITMAPCACHE_CAPABILITYSET) *//* 2.2.7.1.4.2 Revision 2 (TS_BITMAPCACHE_CAPABILITYSET_REV2) */static intputbc2caps(uchar *p, uint nb, Caps* caps){	USED(caps);	if(nb<40){		werrstr(Eshort);		return -1;	}	iputs(p+0, CapBitcache2);	iputs(p+2, 40);	// size	iputs(p+4, 0);	// CacheFlags (2 bytes):  	p[6] = 0;	// pad2	p[7] = 3;	// NumCellCaches	iputl(p+8, 120);	// BitmapCache0CellInfo	iputl(p+12, 120);	// BitmapCache1CellInfo	iputl(p+16, 336);	// BitmapCache2CellInfo	iputl(p+20, 0);	// BitmapCache3CellInfo	iputl(p+24, 0);	// BitmapCache4CellInfo	memset(p+28, 12, 0); // Pad3	return 40;} /* 2.2.7.1.5 Pointer Capability Set (TS_POINTER_CAPABILITYSET) */static intputptrcaps(uchar *p, uint nb, Caps* caps){	USED(caps);	if(nb<8){		werrstr(Eshort);		return -1;	}	iputs(p+0, CapPointer);	iputs(p+2, 8);	// size	iputs(p+4, 0);	// colorPointerFlag  	iputs(p+6, 20);	// colorPointerCacheSize 	return 8;} /* 2.2.7.1.6 Input Capability Set (TS_INPUT_CAPABILITYSET) */static intputinpcaps(uchar *p, uint nb, Caps* caps){	long inputFlags;	USED(caps);	enum	{		INPUT_FLAG_SCANCODES=		0x0001,		INPUT_FLAG_MOUSEX=			0x0004,		INPUT_FLAG_FASTPATH_INPUT=	0x0008,		INPUT_FLAG_UNICODE=			0x0010,		INPUT_FLAG_FASTPATH_INPUT2=	0x0020,	}; 	inputFlags = 0		| INPUT_FLAG_SCANCODES		| INPUT_FLAG_UNICODE		;	if(nb<88){		werrstr(Eshort);		return -1;	}	iputs(p+0, CapInput);	iputs(p+2, 88);	// size	iputs(p+4, inputFlags);	// inputFlags	iputs(p+6, 0);	// pad2octetsA 	// the below SHOULD be the same as in the Client Core Data (section 2.2.1.3.2).	iputl(p+8, 0x409);	// keyboardLayout	iputl(p+12, 4);	// keyboardType: IBM enhanced (101- or 102-key)	iputl(p+16, 0);	// keyboardSubType	iputl(p+20, 12);	// keyboardFunctionKey	memset(p+24, 64, 0);	// imeFileName	return 88;} /* 2.2.7.1.8 Glyph Cache Capability Set (TS_GLYPHCACHE_CAPABILITYSET) */static intputglycaps(uchar *p, uint nb, Caps* caps){	enum {		GLYPH_SUPPORT_NONE= 0,	};	USED(caps); 	if(nb<52){		werrstr(Eshort);		return -1;	}	iputs(p+0, CapGlyph);	iputs(p+2, 52);	// size	iputl(p+4, 0x0400fe);	// GlyphCache 0	iputl(p+8, 0x0400fe);	// GlyphCache 1	iputl(p+12, 0x0800fe);	// GlyphCache 2	iputl(p+16, 0x0800fe);	// GlyphCache 3	iputl(p+20, 0x1000fe);	// GlyphCache 4	iputl(p+24, 0x2000fe);	// GlyphCache 5	iputl(p+28, 0x4000fe);	// GlyphCache 6	iputl(p+32, 0x8000fe);	// GlyphCache 7	iputl(p+36, 0x10000fe);	// GlyphCache 8	iputl(p+40, 0x8000040);	// GlyphCache 9	iputl(p+44, 0x01000100);	// FragCache 	iputs(p+48, GLYPH_SUPPORT_NONE);	// GlyphSupportLevel	iputs(p+50, 0);	// pad2octets 	return 52;} /* 2.2.7.1.11 Sound Capability Set (TS_SOUND_CAPABILITYSET) */static intputsndcaps(uchar *p, uint nb, Caps* caps){	USED(caps);	if(nb<8){		werrstr(Eshort);		return -1;	}	iputs(p+0, CapSound);	iputs(p+2, 8);	// size	iputs(p+4, 0);	// soundFlags	iputs(p+6, 0);	// pad2octetsA	return 8;}