swaprep.c

远程桌面连接工具

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

Copyright (c) 1987  X Consortium

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
X CONSORTIUM 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.

Except as contained in this notice, the name of the X Consortium shall not be
used in advertising or otherwise to promote the sale, use or other dealings
in this Software without prior written authorization from the X Consortium.


Copyright 1987 by Digital Equipment Corporation, Maynard, Massachusetts.

                        All Rights Reserved

Permission to use, copy, modify, and distribute this software and its 
documentation for any purpose and without fee is hereby granted, 
provided that the above copyright notice appear in all copies and that
both that copyright notice and this permission notice appear in 
supporting documentation, and that the name of Digital not be
used in advertising or publicity pertaining to distribution of the
software without specific, written prior permission.  

DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
SOFTWARE.

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

/* $XConsortium: swaprep.c /main/25 1995/12/08 13:39:45 dpw $ */
/* $XFree86: xc/programs/Xserver/dix/swaprep.c,v 3.2 1996/04/15 11:19:58 dawes Exp $ */

#include "X.h"
#define NEED_REPLIES
#define NEED_EVENTS
#include "Xproto.h"
#include "misc.h"
#include "dixstruct.h"
#include "fontstruct.h"
#include "scrnintstr.h"
#include "swaprep.h"

static void SwapFontInfo(
#if NeedFunctionPrototypes
    xQueryFontReply * /* pr */
#endif
);

#ifndef LBX
static void SwapCharInfo(
#if NeedFunctionPrototypes
    xCharInfo * /* pInfo */
#endif
    );

static void SwapFont(
#if NeedFunctionPrototypes
    xQueryFontReply * /* pr */,
    Bool /* hasGlyphs */
#endif
    );
#endif

/* Thanks to Jack Palevich for testing and subsequently rewriting all this */
void
Swap32Write(pClient, size, pbuf)
    ClientPtr	pClient;
    int		size;  /* in bytes */
    register CARD32 *pbuf;
{
    register int i;
    register char n;

    size >>= 2;
    for(i = 0; i < size; i++)
    /* brackets are mandatory here, because "swapl" macro expands
       to several statements */
    {   
	swapl(&pbuf[i], n);
    }
    (void)WriteToClient(pClient, size << 2, (char *) pbuf);
}

void
CopySwap32Write(pClient, size, pbuf)
    ClientPtr	pClient;
    int		size;   /* in bytes */
    CARD32	*pbuf;
{
    int bufsize = size;
    CARD32 *pbufT;
    register CARD32 *from, *to, *fromLast, *toLast;
    CARD32 tmpbuf[1];
    
    /* Allocate as big a buffer as we can... */
    while (!(pbufT = (CARD32 *) ALLOCATE_LOCAL(bufsize)))
    {
        bufsize >>= 1;
	if (bufsize == 4)
	{
	    pbufT = tmpbuf;
	    break;
	}
    }
    
    /* convert lengths from # of bytes to # of longs */
    size >>= 2;
    bufsize >>= 2;

    from = pbuf;
    fromLast = from + size;
    while (from < fromLast) {
	int nbytes;
        to = pbufT;
        toLast = to + min (bufsize, fromLast - from);
        nbytes = (toLast - to) << 2;
        while (to < toLast) {
            /* can't write "cpswapl(*from++, *to++)" because cpswapl is a macro
	       that evaulates its args more than once */
	    cpswapl(*from, *to);
            from++;
            to++;
	    }
	(void)WriteToClient (pClient, nbytes, (char *) pbufT);
	}

    if (pbufT != tmpbuf)
	DEALLOCATE_LOCAL ((char *) pbufT);
}

void
CopySwap16Write(pClient, size, pbuf)
    ClientPtr	pClient;
    int		size;   /* in bytes */
    short	*pbuf;
{
    int bufsize = size;
    short *pbufT;
    register short *from, *to, *fromLast, *toLast;
    short tmpbuf[2];
    
    /* Allocate as big a buffer as we can... */
    while (!(pbufT = (short *) ALLOCATE_LOCAL(bufsize)))
    {
        bufsize >>= 1;
	if (bufsize == 4)
	{
	    pbufT = tmpbuf;
	    break;
	}
    }
    
    /* convert lengths from # of bytes to # of shorts */
    size >>= 1;
    bufsize >>= 1;

    from = pbuf;
    fromLast = from + size;
    while (from < fromLast) {
	int nbytes;
        to = pbufT;
        toLast = to + min (bufsize, fromLast - from);
        nbytes = (toLast - to) << 1;
        while (to < toLast) {
            /* can't write "cpswaps(*from++, *to++)" because cpswaps is a macro
	       that evaulates its args more than once */
	    cpswaps(*from, *to);
            from++;
            to++;
	    }
	(void)WriteToClient (pClient, nbytes, (char *) pbufT);
	}

    if (pbufT != tmpbuf)
	DEALLOCATE_LOCAL ((char *) pbufT);
}


/* Extra-small reply */
void
SGenericReply(pClient, size, pRep)
    ClientPtr			pClient;
    int				size;
    xGenericReply		*pRep;
{
    register char n;

    swaps(&pRep->sequenceNumber, n);
    (void)WriteToClient(pClient, size, (char *) pRep);
}

/* Extra-large reply */
void
SGetWindowAttributesReply(pClient, size, pRep)
    ClientPtr			pClient;
    int				size;
    xGetWindowAttributesReply	*pRep;
{
    register char n;

    swaps(&pRep->sequenceNumber, n);
    swapl(&pRep->length, n);
    swapl(&pRep->visualID, n);
    swaps(&pRep->class, n);
    swapl(&pRep->backingBitPlanes, n);
    swapl(&pRep->backingPixel, n);
    swapl(&pRep->colormap, n);
    swapl(&pRep->allEventMasks, n);
    swapl(&pRep->yourEventMask, n);
    swaps(&pRep->doNotPropagateMask, n);
    (void)WriteToClient(pClient, size, (char *) pRep);
}

void
SGetGeometryReply(pClient, size, pRep)
    ClientPtr		pClient;
    int			size;
    xGetGeometryReply	*pRep;
{
    register char n;

    swaps(&pRep->sequenceNumber, n);
    swapl(&pRep->root, n);
    swaps(&pRep->x, n);
    swaps(&pRep->y, n);
    swaps(&pRep->width, n);
    swaps(&pRep->height, n);
    swaps(&pRep->borderWidth, n);
    (void)WriteToClient(pClient, size, (char *) pRep);
}

void
SQueryTreeReply(pClient, size, pRep)
    ClientPtr		pClient;
    int			size;
    xQueryTreeReply	*pRep;
{
    register char n;

    swaps(&pRep->sequenceNumber, n);
    swapl(&pRep->length, n);
    swapl(&pRep->root, n);
    swapl(&pRep->parent, n);
    swaps(&pRep->nChildren, n);
    (void)WriteToClient(pClient, size, (char *) pRep);
}

void
SInternAtomReply(pClient, size, pRep)
    ClientPtr		pClient;
    int			size;
    xInternAtomReply	*pRep;
{
    register char n;

    swaps(&pRep->sequenceNumber, n);
    swapl(&pRep->atom, n);
    (void)WriteToClient(pClient, size, (char *) pRep);
}

void
SGetAtomNameReply(pClient, size, pRep)
    ClientPtr			pClient;
    int				size;
    xGetAtomNameReply	*pRep;
{
    register char n;

    swaps(&pRep->sequenceNumber, n);
    swapl(&pRep->length, n);
    swaps(&pRep->nameLength, n);
    (void)WriteToClient(pClient, size, (char *) pRep);
}


void
SGetPropertyReply(pClient, size, pRep)
    ClientPtr			pClient;
    int				size;
    xGetPropertyReply	*pRep;
{
    register char n;

    swaps(&pRep->sequenceNumber, n);
    swapl(&pRep->length, n);
    swapl(&pRep->propertyType, n);
    swapl(&pRep->bytesAfter, n);
    swapl(&pRep->nItems, n);
    (void)WriteToClient(pClient, size, (char *) pRep);
}

void
SListPropertiesReply(pClient, size, pRep)
    ClientPtr			pClient;
    int				size;
    xListPropertiesReply	*pRep;
{
    register char n;

    swaps(&pRep->sequenceNumber, n);
    swapl(&pRep->length, n);
    swaps(&pRep->nProperties, n);
    (void)WriteToClient(pClient, size, (char *) pRep);
}

void
SGetSelectionOwnerReply(pClient, size, pRep)
    ClientPtr			pClient;
    int				size;
    xGetSelectionOwnerReply	*pRep;
{
    register char n;

    swaps(&pRep->sequenceNumber, n);
    swapl(&pRep->owner, n);
    (void)WriteToClient(pClient, size, (char *) pRep);
}


void
SQueryPointerReply(pClient, size, pRep)
    ClientPtr		pClient;
    int			size;
    xQueryPointerReply	*pRep;
{
    register char n;

    swaps(&pRep->sequenceNumber, n);
    swapl(&pRep->root, n);
    swapl(&pRep->child, n);
    swaps(&pRep->rootX, n);
    swaps(&pRep->rootY, n);
    swaps(&pRep->winX, n);
    swaps(&pRep->winY, n);
    swaps(&pRep->mask, n);
    (void)WriteToClient(pClient, size, (char *) pRep);
}

void
SwapTimecoord(pCoord)
    xTimecoord *pCoord;
{
    register char n;

    swapl(&pCoord->time, n);
    swaps(&pCoord->x, n);
    swaps(&pCoord->y, n);
}

void
SwapTimeCoordWrite(pClient, size, pRep)
    ClientPtr			pClient;
    int				size;
    xTimecoord			*pRep;
{
    int	i, n;
    xTimecoord			*pRepT;

    n = size / sizeof(xTimecoord);
    pRepT = pRep;
    for(i = 0; i < n; i++)
    {
	SwapTimecoord(pRepT);
	pRepT++;
    }
    (void)WriteToClient(pClient, size, (char *) pRep);

}
void
SGetMotionEventsReply(pClient, size, pRep)
    ClientPtr			pClient;
    int				size;
    xGetMotionEventsReply	*pRep;
{
    register char n;

    swaps(&pRep->sequenceNumber, n);
    swapl(&pRep->length, n);
    swapl(&pRep->nEvents, n);
    (void)WriteToClient(pClient, size, (char *) pRep);
}

void
STranslateCoordsReply(pClient, size, pRep)
    ClientPtr			pClient;
    int				size;
    xTranslateCoordsReply	*pRep;
{
    register char n;

    swaps(&pRep->sequenceNumber, n);
    swapl(&pRep->child, n);
    swaps(&pRep->dstX, n);
    swaps(&pRep->dstY, n);
    (void)WriteToClient(pClient, size, (char *) pRep);
}

void
SGetInputFocusReply(pClient, size, pRep)
    ClientPtr		pClient;
    int			size;
    xGetInputFocusReply	*pRep;
{
    register char n;

    swaps(&pRep->sequenceNumber, n);
    swapl(&pRep->focus, n);
    (void)WriteToClient(pClient, size, (char *) pRep);
}

/* extra long reply */
void
SQueryKeymapReply(pClient, size, pRep)
    ClientPtr			pClient;
    int				size;
    xQueryKeymapReply	*pRep;
{
    register char n;

    swaps(&pRep->sequenceNumber, n);
    swapl(&pRep->length, n);
    (void)WriteToClient(pClient, size, (char *) pRep);
}

#ifndef LBX
static
#endif
void
SwapCharInfo(pInfo)
    xCharInfo	*pInfo;
{
    register char n;

    swaps(&pInfo->leftSideBearing, n);
    swaps(&pInfo->rightSideBearing, n);
    swaps(&pInfo->characterWidth, n);
    swaps(&pInfo->ascent, n);
    swaps(&pInfo->descent, n);
    swaps(&pInfo->attributes, n);
}

static void
SwapFontInfo(pr)
    xQueryFontReply *pr;
{
    register char		n;

    swaps(&pr->minCharOrByte2, n);
    swaps(&pr->maxCharOrByte2, n);
    swaps(&pr->defaultChar, n);
    swaps(&pr->nFontProps, n);
    swaps(&pr->fontAscent, n);
    swaps(&pr->fontDescent, n);
    SwapCharInfo( &pr->minBounds);
    SwapCharInfo( &pr->maxBounds);
    swapl(&pr->nCharInfos, n);
}

#ifndef LBX
static
#endif
void
SwapFont( pr, hasGlyphs)
    xQueryFontReply *	pr;
    Bool hasGlyphs;
{
    unsigned	i;
    xCharInfo *	pxci;
    unsigned	nchars, nprops;
    char	*pby;