dispatch.c

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         x + width > wBorderWidth((WindowPtr)pDraw) + (int)pDraw->width ||
         y < -wBorderWidth((WindowPtr)pDraw) ||
         y + height > wBorderWidth ((WindowPtr)pDraw) + (int)pDraw->height
        )
	    return(BadMatch);
	xgi.visual = wVisual (((WindowPtr) pDraw));
    }
    else
    {
      if(x < 0 ||
         x+width > (int)pDraw->width ||
         y < 0 ||
         y+height > (int)pDraw->height
        )
	    return(BadMatch);
	xgi.visual = None;
    }

    SET_DBE_SRCBUF(pDraw, drawable);

    xgi.type = X_Reply;
    xgi.sequenceNumber = client->sequence;
    xgi.depth = pDraw->depth;
    if(format == ZPixmap)
    {
	widthBytesLine = PixmapBytePad(width, pDraw->depth);
	length = widthBytesLine * height;

#ifdef INTERNAL_VS_EXTERNAL_PADDING
	widthBytesLineProto = PixmapBytePadProto(width, pDraw->depth);
	lengthProto 	    = widthBytesLineProto * height;
#endif
    }
    else 
    {
	widthBytesLine = BitmapBytePad(width);
	plane = ((Mask)1) << (pDraw->depth - 1);
	/* only planes asked for */
	length = widthBytesLine * height *
		 Ones(planemask & (plane | (plane - 1)));

#ifdef INTERNAL_VS_EXTERNAL_PADDING
	widthBytesLineProto = BitmapBytePadProto(width);
	lengthProto = widthBytesLineProto * height *
		 Ones(planemask & (plane | (plane - 1)));
#endif
    }

#ifdef INTERNAL_VS_EXTERNAL_PADDING
    xgi.length = lengthProto;
#else
    xgi.length = length;
#endif

    if (im_return) {
	pBuf = (char *)xalloc(sz_xGetImageReply + length);
	if (!pBuf)
	    return (BadAlloc);
	if (widthBytesLine == 0)
	    linesPerBuf = 0;
	else
	    linesPerBuf = height;
	*im_return = (xGetImageReply *)pBuf;
	*(xGetImageReply *)pBuf = xgi;
	pBuf += sz_xGetImageReply;
    } else {
	xgi.length = (xgi.length + 3) >> 2;
	if (widthBytesLine == 0 || height == 0)
	    linesPerBuf = 0;
	else if (widthBytesLine >= IMAGE_BUFSIZE)
	    linesPerBuf = 1;
	else
	{
	    linesPerBuf = IMAGE_BUFSIZE / widthBytesLine;
	    if (linesPerBuf > height)
		linesPerBuf = height;
	}
	length = linesPerBuf * widthBytesLine;
	if (linesPerBuf < height)
	{
	    /* we have to make sure intermediate buffers don't need padding */
	    while ((linesPerBuf > 1) &&
		   (length & ((1 << LOG2_BYTES_PER_SCANLINE_PAD)-1)))
	    {
		linesPerBuf--;
		length -= widthBytesLine;
	    }
	    while (length & ((1 << LOG2_BYTES_PER_SCANLINE_PAD)-1))
	    {
		linesPerBuf++;
		length += widthBytesLine;
	    }
	}
	if(!(pBuf = (char *) ALLOCATE_LOCAL(length)))
	    return (BadAlloc);
	WriteReplyToClient(client, sizeof (xGetImageReply), &xgi);
    }

#ifdef XCSECURITY
    if (client->trustLevel != XSecurityClientTrusted &&
	pDraw->type == DRAWABLE_WINDOW)
    {
	pVisibleRegion = NotClippedByChildren((WindowPtr)pDraw);
	if (pVisibleRegion)
	{
	    REGION_TRANSLATE(pScreen, pVisibleRegion, -pDraw->x, -pDraw->y);
	}
    }
#endif

    if (linesPerBuf == 0)
    {
	/* nothing to do */
    }
    else if (format == ZPixmap)
    {
        linesDone = 0;
        while (height - linesDone > 0)
        {
	    nlines = min(linesPerBuf, height - linesDone);
	    (*pDraw->pScreen->GetImage) (pDraw,
	                                 x,
				         y + linesDone,
				         width, 
				         nlines,
				         format,
				         planemask,
				         (pointer) pBuf);
#ifdef XCSECURITY
	    if (pVisibleRegion)
		SecurityCensorImage(client, pVisibleRegion, widthBytesLine,
			pDraw, x, y + linesDone, width, 
			nlines, format, pBuf);
#endif

#ifdef INTERNAL_VS_EXTERNAL_PADDING
	    /* for 64-bit server, convert image to pad to 32 bits */
	    if ( widthBytesLine != widthBytesLineProto ) {
		register char * bufPtr, * protoPtr;
		register int i;

		for (i = 1,
		     bufPtr = pBuf + widthBytesLine,
		     protoPtr = pBuf + widthBytesLineProto;
		     i < nlines;
		     bufPtr += widthBytesLine,
		     protoPtr += widthBytesLineProto, 
		     i++)
		    memmove(protoPtr, bufPtr, widthBytesLineProto);
	    }
#endif
	    /* Note that this is NOT a call to WriteSwappedDataToClient,
               as we do NOT byte swap */
	    if (!im_return)
/* Don't split me, gcc pukes when you do */
#ifdef INTERNAL_VS_EXTERNAL_PADDING
		(void)WriteToClient(client,
				    (int)(nlines * widthBytesLineProto),
				    pBuf);
#else
		(void)WriteToClient(client,
				    (int)(nlines * widthBytesLine),
				    pBuf);
#endif
	    linesDone += nlines;
        }
    }
    else /* XYPixmap */
    {
        for (; plane; plane >>= 1)
	{
	    if (planemask & plane)
	    {
	        linesDone = 0;
	        while (height - linesDone > 0)
	        {
		    nlines = min(linesPerBuf, height - linesDone);
	            (*pDraw->pScreen->GetImage) (pDraw,
	                                         x,
				                 y + linesDone,
				                 width, 
				                 nlines,
				                 format,
				                 plane,
				                 (pointer)pBuf);
#ifdef XCSECURITY
		    if (pVisibleRegion)
			SecurityCensorImage(client, pVisibleRegion,
				widthBytesLine,
				pDraw, x, y + linesDone, width, 
				nlines, format, pBuf);
#endif

#ifdef INTERNAL_VS_EXTERNAL_PADDING
	    	    /* for 64-bit server, convert image to pad to 32 bits */
	    	    if ( widthBytesLine != widthBytesLineProto ) {
			register char * bufPtr, * protoPtr;
			register int i;

			for (i = 1,
			     bufPtr = pBuf + widthBytesLine,
			     protoPtr = pBuf + widthBytesLineProto;
			     i < nlines;
			     bufPtr += widthBytesLine,
			     protoPtr += widthBytesLineProto,
			     i++)
		    	    memmove(protoPtr, bufPtr, widthBytesLineProto);
	    	    }
#endif
		    /* Note: NOT a call to WriteSwappedDataToClient,
		       as we do NOT byte swap */
		    if (im_return) {
#ifdef INTERNAL_VS_EXTERNAL_PADDING
			pBuf += nlines * widthBytesLineProto;
#else
			pBuf += nlines * widthBytesLine;
#endif
		    } else
/* Don't split me, gcc pukes when you do */
#ifdef INTERNAL_VS_EXTERNAL_PADDING
			(void)WriteToClient(client,
					(int)(nlines * widthBytesLineProto),
					pBuf);
#else
			(void)WriteToClient(client,
					(int)(nlines * widthBytesLine),
					pBuf);
#endif
		    linesDone += nlines;
		}
            }
	}
    }
#ifdef XCSECURITY
    if (pVisibleRegion)
	REGION_DESTROY(pScreen, pVisibleRegion);
#endif
    if (!im_return)
	DEALLOCATE_LOCAL(pBuf);
    return (client->noClientException);
}

int
ProcGetImage(client)
    register ClientPtr	client;
{
    REQUEST(xGetImageReq);

    REQUEST_SIZE_MATCH(xGetImageReq);

    return DoGetImage(client, stuff->format, stuff->drawable,
		      stuff->x, stuff->y,
		      (int)stuff->width, (int)stuff->height,
		      stuff->planeMask, (xGetImageReply **)NULL);
}

int
ProcPolyText(client)
    register ClientPtr client;
{
    int	err;
    REQUEST(xPolyTextReq);
    DrawablePtr pDraw;
    GC *pGC;

    REQUEST_AT_LEAST_SIZE(xPolyTextReq);
    VALIDATE_DRAWABLE_AND_GC(stuff->drawable, pDraw, pGC, client);

    err = PolyText(client,
		   pDraw,
		   pGC,
		   (unsigned char *)&stuff[1],
		   ((unsigned char *) stuff) + (client->req_len << 2),
		   stuff->x,
		   stuff->y,
		   stuff->reqType,
		   stuff->drawable);

    if (err == Success)
    {
	return(client->noClientException);
    }
    else
	return err;
}

int
ProcImageText8(client)
    register ClientPtr client;
{
    int	err;
    register DrawablePtr pDraw;
    register GC *pGC;

    REQUEST(xImageTextReq);

    REQUEST_FIXED_SIZE(xImageTextReq, stuff->nChars);
    VALIDATE_DRAWABLE_AND_GC(stuff->drawable, pDraw, pGC, client);

    err = ImageText(client,
		    pDraw,
		    pGC,
		    stuff->nChars,
		    (unsigned char *)&stuff[1],
		    stuff->x,
		    stuff->y,
		    stuff->reqType,
		    stuff->drawable);

    if (err == Success)
    {
	return(client->noClientException);
    }
    else
	return err;
}

int
ProcImageText16(client)
    register ClientPtr client;
{
    int	err;
    register DrawablePtr pDraw;
    register GC *pGC;

    REQUEST(xImageTextReq);

    REQUEST_FIXED_SIZE(xImageTextReq, stuff->nChars << 1);
    VALIDATE_DRAWABLE_AND_GC(stuff->drawable, pDraw, pGC, client);

    err = ImageText(client,
		    pDraw,
		    pGC,
		    stuff->nChars,
		    (unsigned char *)&stuff[1],
		    stuff->x,
		    stuff->y,
		    stuff->reqType,
		    stuff->drawable);

    if (err == Success)
    {
	return(client->noClientException);
    }
    else
	return err;
}


int
ProcCreateColormap(client)
    register ClientPtr client;
{
    VisualPtr	pVisual;
    ColormapPtr	pmap;
    Colormap	mid;
    register WindowPtr   pWin;
    ScreenPtr pScreen;
    REQUEST(xCreateColormapReq);
    int i, result;

    REQUEST_SIZE_MATCH(xCreateColormapReq);

    if ((stuff->alloc != AllocNone) && (stuff->alloc != AllocAll))
    {
	client->errorValue = stuff->alloc;
        return(BadValue);
    }
    mid = stuff->mid;
    LEGAL_NEW_RESOURCE(mid, client);
    pWin = (WindowPtr)SecurityLookupWindow(stuff->window, client,
					   SecurityReadAccess);
    if (!pWin)
        return(BadWindow);

    pScreen = pWin->drawable.pScreen;
    for (i = 0, pVisual = pScreen->visuals;
	 i < pScreen->numVisuals;
	 i++, pVisual++)
    {
	if (pVisual->vid != stuff->visual)
	    continue;
	result =  CreateColormap(mid, pScreen, pVisual, &pmap,
				 (int)stuff->alloc, client->index);
	if (client->noClientException != Success)
	    return(client->noClientException);
	else
	    return(result);
    }
    client->errorValue = stuff->visual;
    return(BadValue);
}

int
ProcFreeColormap(client)
    register ClientPtr client;
{
    ColormapPtr pmap;
    REQUEST(xResourceReq);

    REQUEST_SIZE_MATCH(xResourceReq);
    pmap = (ColormapPtr )SecurityLookupIDByType(client, stuff->id, RT_COLORMAP,
						SecurityDestroyAccess);
    if (pmap) 
    {
	/* Freeing a default colormap is a no-op */
	if (!(pmap->flags & IsDefault))
	    FreeResource(stuff->id, RT_NONE);
	return (client->noClientException);
    }
    else 
    {
	client->errorValue = stuff->id;
	return (BadColor);
    }
}


int
ProcCopyColormapAndFree(client)
    register ClientPtr client;
{
    Colormap	mid;
    ColormapPtr	pSrcMap;
    REQUEST(xCopyColormapAndFreeReq);
    int result;

    REQUEST_SIZE_MATCH(xCopyColormapAndFreeReq);
    mid = stuff->mid;
    LEGAL_NEW_RESOURCE(mid, client);
    if( (pSrcMap = (ColormapPtr )SecurityLookupIDByType(client,	stuff->srcCmap,
		RT_COLORMAP, SecurityReadAccess|SecurityWriteAccess)) )
    {
	result = CopyColormapAndFree(mid, pSrcMap, client->index);
	if (client->noClientException != Success)
            return(client->noClientException);
	else
            return(result);
    }
    else
    {
	client->errorValue = stuff->srcCmap;
	return(BadColor);
    }
}

int
ProcInstallColormap(client)
    register ClientPtr client;
{
    ColormapPtr pcmp;
    REQUEST(xResourceReq);

    REQUEST_SIZE_MATCH(xResourceReq);
    pcmp = (ColormapPtr)SecurityLookupIDByType(client, stuff->id,
					    RT_COLORMAP, SecurityReadAccess);
    if (pcmp)
    {
        (*(pcmp->pScreen->InstallColormap)) (pcmp);
        return (client->noClientException);        
    }
    else
    {
        client->errorValue = stuff->id;
        return (BadColor);
    }
}

int
ProcUninstallColormap(client)
    register ClientPtr client;
{
    ColormapPtr pcmp;
    REQUEST(xResourceReq);

    REQUEST_SIZE_MATCH(xResourceReq);
    pcmp = (ColormapPtr)SecurityLookupIDByType(client, stuff->id,
					RT_COLORMAP, SecurityReadAccess);
    if (pcmp)
    {
	if(pcmp->mid != pcmp->pScreen->defColormap)
            (*(pcmp->pScreen->UninstallColormap)) (pcmp);
        return (client->noClientException);        
    }
    else
    {
        client->errorValue = stuff->id;
        return (BadColor);
    }
}

int
ProcListInstalledColormaps(client)
    register ClientPtr client;
{
    xListInstalledColormapsReply *preply; 
    int nummaps