IABSD.fr/xenocara/xserver/dix/dispatch.c

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• Author : matthieu
  Date : 2006-11-26 18:13:41
  Hash : 889b8606
  Message : Importing xserver from X.Org 7.2RC2

• xserver/dix/dispatch.c

• /************************************************************
  
  Copyright 1987, 1989, 1998  The Open Group
  
  Permission to use, copy, modify, distribute, and sell this software and its
  documentation for any purpose is hereby granted without fee, provided that
  the above copyright notice appear in all copies and that both that
  copyright notice and this permission notice appear in supporting
  documentation.
  
  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
  OPEN GROUP 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 Open Group 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 Open Group.
  
  
  Copyright 1987, 1989 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.
  
  ********************************************************/
  
  /* The panoramix components contained the following notice */
  /*****************************************************************
  
  Copyright (c) 1991, 1997 Digital Equipment Corporation, Maynard, Massachusetts.
  
  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.
  
  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
  DIGITAL EQUIPMENT CORPORATION BE LIABLE FOR ANY CLAIM, DAMAGES, INCLUDING,
  BUT NOT LIMITED TO CONSEQUENTIAL OR INCIDENTAL 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 Digital Equipment Corporation
  shall not be used in advertising or otherwise to promote the sale, use or other
  dealings in this Software without prior written authorization from Digital
  Equipment Corporation.
  
  ******************************************************************/
  
  
  #ifdef HAVE_DIX_CONFIG_H
  #include <dix-config.h>
  #endif
  
  #ifdef PANORAMIX_DEBUG
  #include <stdio.h>
  int ProcInitialConnection();
  #endif
  
  #include "windowstr.h"
  #include <X11/fonts/fontstruct.h>
  #include "dixfontstr.h"
  #include "gcstruct.h"
  #include "selection.h"
  #include "colormapst.h"
  #include "cursorstr.h"
  #include "scrnintstr.h"
  #include "opaque.h"
  #include "input.h"
  #include "servermd.h"
  #include "extnsionst.h"
  #include "dixfont.h"
  #include "dispatch.h"
  #include "swaprep.h"
  #include "swapreq.h"
  #ifdef PANORAMIX
  #include "panoramiX.h"
  #include "panoramiXsrv.h"
  #endif
  #ifdef XACE
  #include "xace.h"
  #endif
  #ifdef XAPPGROUP
  #include "appgroup.h"
  #endif
  #ifdef XKB
  #ifndef XKB_IN_SERVER
  #define XKB_IN_SERVER
  #endif
  #include "inputstr.h"
  #include <X11/extensions/XKBsrv.h>
  #endif
  
  #define mskcnt ((MAXCLIENTS + 31) / 32)
  #define BITMASK(i) (1U << ((i) & 31))
  #define MASKIDX(i) ((i) >> 5)
  #define MASKWORD(buf, i) buf[MASKIDX(i)]
  #define BITSET(buf, i) MASKWORD(buf, i) |= BITMASK(i)
  #define BITCLEAR(buf, i) MASKWORD(buf, i) &= ~BITMASK(i)
  #define GETBIT(buf, i) (MASKWORD(buf, i) & BITMASK(i))
  
  extern xConnSetupPrefix connSetupPrefix;
  extern char *ConnectionInfo;
  
  _X_EXPORT Selection *CurrentSelections;
  _X_EXPORT int NumCurrentSelections;
  CallbackListPtr SelectionCallback = NULL;
  
  static ClientPtr grabClient;
  #define GrabNone 0
  #define GrabActive 1
  #define GrabKickout 2
  static int grabState = GrabNone;
  static long grabWaiters[mskcnt];
  _X_EXPORT CallbackListPtr ServerGrabCallback = NULL;
  HWEventQueuePtr checkForInput[2];
  extern int connBlockScreenStart;
  
  static void KillAllClients(void);
  
  static void DeleteClientFromAnySelections(ClientPtr client);
  
  static int nextFreeClientID; /* always MIN free client ID */
  
  static int	nClients;	/* number of authorized clients */
  
  _X_EXPORT CallbackListPtr ClientStateCallback;
  
  /* dispatchException & isItTimeToYield must be declared volatile since they
   * are modified by signal handlers - otherwise optimizer may assume it doesn't
   * need to actually check value in memory when used and may miss changes from
   * signal handlers.
   */
  _X_EXPORT volatile char dispatchException = 0;
  _X_EXPORT volatile char isItTimeToYield;
  
  /* Various of the DIX function interfaces were not designed to allow
   * the client->errorValue to be set on BadValue and other errors.
   * Rather than changing interfaces and breaking untold code we introduce
   * a new global that dispatch can use.
   */
  XID clientErrorValue;   /* XXX this is a kludge */
  
  #define SAME_SCREENS(a, b) (\
      (a.pScreen == b.pScreen))
  
  _X_EXPORT void
  SetInputCheck(HWEventQueuePtr c0, HWEventQueuePtr c1)
  {
      checkForInput[0] = c0;
      checkForInput[1] = c1;
  }
  
  _X_EXPORT void
  UpdateCurrentTime()
  {
      TimeStamp systime;
  
      /* To avoid time running backwards, we must call GetTimeInMillis before
       * calling ProcessInputEvents.
       */
      systime.months = currentTime.months;
      systime.milliseconds = GetTimeInMillis();
      if (systime.milliseconds < currentTime.milliseconds)
  	systime.months++;
      if (*checkForInput[0] != *checkForInput[1])
  	ProcessInputEvents();
      if (CompareTimeStamps(systime, currentTime) == LATER)
  	currentTime = systime;
  }
  
  /* Like UpdateCurrentTime, but can't call ProcessInputEvents */
  _X_EXPORT void
  UpdateCurrentTimeIf()
  {
      TimeStamp systime;
  
      systime.months = currentTime.months;
      systime.milliseconds = GetTimeInMillis();
      if (systime.milliseconds < currentTime.milliseconds)
  	systime.months++;
      if (*checkForInput[0] == *checkForInput[1])
  	currentTime = systime;
  }
  
  void
  InitSelections()
  {
      if (CurrentSelections)
  	xfree(CurrentSelections);
      CurrentSelections = (Selection *)NULL;
      NumCurrentSelections = 0;
  }
  
  void 
  FlushClientCaches(XID id)
  {
      int i;
      register ClientPtr client;
  
      client = clients[CLIENT_ID(id)];
      if (client == NullClient)
          return ;
      for (i=0; i<currentMaxClients; i++)
      {
  	client = clients[i];
          if (client != NullClient)
  	{
              if (client->lastDrawableID == id)
  	    {
  		client->lastDrawableID = WindowTable[0]->drawable.id;
  		client->lastDrawable = (DrawablePtr)WindowTable[0];
  	    }
              else if (client->lastGCID == id)
  	    {
                  client->lastGCID = INVALID;
  		client->lastGC = (GCPtr)NULL;
  	    }
  	}
      }
  }
  #ifdef SMART_SCHEDULE
  
  #undef SMART_DEBUG
  
  #define SMART_SCHEDULE_DEFAULT_INTERVAL	20	    /* ms */
  #define SMART_SCHEDULE_MAX_SLICE	200	    /* ms */
  
  Bool	    SmartScheduleDisable = FALSE;
  long	    SmartScheduleSlice = SMART_SCHEDULE_DEFAULT_INTERVAL;
  long	    SmartScheduleInterval = SMART_SCHEDULE_DEFAULT_INTERVAL;
  long	    SmartScheduleMaxSlice = SMART_SCHEDULE_MAX_SLICE;
  long	    SmartScheduleTime;
  ClientPtr   SmartLastClient;
  int	    SmartLastIndex[SMART_MAX_PRIORITY-SMART_MIN_PRIORITY+1];
  int         SmartScheduleClient(int *clientReady, int nready);
  
  #ifdef SMART_DEBUG
  long	    SmartLastPrint;
  #endif
  
  void        Dispatch(void);
  void        InitProcVectors(void);
  
  int
  SmartScheduleClient (int *clientReady, int nready)
  {
      ClientPtr	pClient;
      int		i;
      int		client;
      int		bestPrio, best = 0;
      int		bestRobin, robin;
      long	now = SmartScheduleTime;
      long	idle;
  
      bestPrio = -0x7fffffff;
      bestRobin = 0;
      idle = 2 * SmartScheduleSlice;
      for (i = 0; i < nready; i++)
      {
  	client = clientReady[i];
  	pClient = clients[client];
  	/* Praise clients which are idle */
  	if ((now - pClient->smart_check_tick) >= idle)
  	{
  	    if (pClient->smart_priority < 0)
  		pClient->smart_priority++;
  	}
  	pClient->smart_check_tick = now;
  	
  	/* check priority to select best client */
  	robin = (pClient->index - SmartLastIndex[pClient->smart_priority-SMART_MIN_PRIORITY]) & 0xff;
  	if (pClient->smart_priority > bestPrio ||
  	    (pClient->smart_priority == bestPrio && robin > bestRobin))
  	{
  	    bestPrio = pClient->smart_priority;
  	    bestRobin = robin;
  	    best = client;
  	}
  #ifdef SMART_DEBUG
  	if ((now - SmartLastPrint) >= 5000)
  	    fprintf (stderr, " %2d: %3d", client, pClient->smart_priority);
  #endif
      }
  #ifdef SMART_DEBUG
      if ((now - SmartLastPrint) >= 5000)
      {
  	fprintf (stderr, " use %2d\n", best);
  	SmartLastPrint = now;
      }
  #endif
      pClient = clients[best];
      SmartLastIndex[bestPrio-SMART_MIN_PRIORITY] = pClient->index;
      /*
       * Set current client pointer
       */
      if (SmartLastClient != pClient)
      {
  	pClient->smart_start_tick = now;
  	SmartLastClient = pClient;
      }
      /*
       * Adjust slice
       */
      if (nready == 1)
      {
  	/*
  	 * If it's been a long time since another client
  	 * has run, bump the slice up to get maximal
  	 * performance from a single client
  	 */
  	if ((now - pClient->smart_start_tick) > 1000 &&
  	    SmartScheduleSlice < SmartScheduleMaxSlice)
  	{
  	    SmartScheduleSlice += SmartScheduleInterval;
  	}
      }
      else
      {
  	SmartScheduleSlice = SmartScheduleInterval;
      }
      return best;
  }
  #endif
  
  #define MAJOROP ((xReq *)client->requestBuffer)->reqType
  
  void
  Dispatch(void)
  {
      register int        *clientReady;     /* array of request ready clients */
      register int	result;
      register ClientPtr	client;
      register int	nready;
      register HWEventQueuePtr* icheck = checkForInput;
  #ifdef SMART_SCHEDULE
      long			start_tick;
  #endif
  
      nextFreeClientID = 1;
      InitSelections();
      nClients = 0;
  
      clientReady = (int *) ALLOCATE_LOCAL(sizeof(int) * MaxClients);
      if (!clientReady)
  	return;
  
      while (!dispatchException)
      {
          if (*icheck[0] != *icheck[1])
  	{
  	    ProcessInputEvents();
  	    FlushIfCriticalOutputPending();
  	}
  
  	nready = WaitForSomething(clientReady);
  
  #ifdef SMART_SCHEDULE
  	if (nready && !SmartScheduleDisable)
  	{
  	    clientReady[0] = SmartScheduleClient (clientReady, nready);
  	    nready = 1;
  	}
  #endif
         /***************** 
  	*  Handle events in round robin fashion, doing input between 
  	*  each round 
  	*****************/
  
  	while (!dispatchException && (--nready >= 0))
  	{
  	    client = clients[clientReady[nready]];
  	    if (! client)
  	    {
  		/* KillClient can cause this to happen */
  		continue;
  	    }
  	    /* GrabServer activation can cause this to be true */
  	    if (grabState == GrabKickout)
  	    {
  		grabState = GrabActive;
  		break;
  	    }
  	    isItTimeToYield = FALSE;
   
              requestingClient = client;
  #ifdef SMART_SCHEDULE
  	    start_tick = SmartScheduleTime;
  #endif
  	    while (!isItTimeToYield)
  	    {
  	        if (*icheck[0] != *icheck[1])
  		{
  		    ProcessInputEvents();
  		    FlushIfCriticalOutputPending();
  		}
  #ifdef SMART_SCHEDULE
  		if (!SmartScheduleDisable && 
  		    (SmartScheduleTime - start_tick) >= SmartScheduleSlice)
  		{
  		    /* Penalize clients which consume ticks */
  		    if (client->smart_priority > SMART_MIN_PRIORITY)
  			client->smart_priority--;
  		    break;
  		}
  #endif
  		/* now, finally, deal with client requests */
  
  	        result = ReadRequestFromClient(client);
  	        if (result <= 0) 
  	        {
  		    if (result < 0)
  			CloseDownClient(client);
  		    break;
  	        }
  
  		client->sequence++;
  #ifdef DEBUG
  		if (client->requestLogIndex == MAX_REQUEST_LOG)
  		    client->requestLogIndex = 0;
  		client->requestLog[client->requestLogIndex] = MAJOROP;
  		client->requestLogIndex++;
  #endif
  		if (result > (maxBigRequestSize << 2))
  		    result = BadLength;
  		else
  #ifdef XACE
  		{
  		    XaceHook(XACE_AUDIT_BEGIN, client);
  		    result = (* client->requestVector[MAJOROP])(client);
  		    XaceHook(XACE_AUDIT_END, client, result);
  		}
  #else
      		    result = (* client->requestVector[MAJOROP])(client);
  #endif /* XACE */
  	    
  		if (result != Success) 
  		{
  		    if (client->noClientException != Success)
                          CloseDownClient(client);
                      else
  		        SendErrorToClient(client, MAJOROP,
  					  MinorOpcodeOfRequest(client),
  					  client->errorValue, result);
  		    break;
  	        }
  #ifdef DAMAGEEXT
  		FlushIfCriticalOutputPending ();
  #endif
  	    }
  	    FlushAllOutput();
  #ifdef SMART_SCHEDULE
  	    client = clients[clientReady[nready]];
  	    if (client)
  		client->smart_stop_tick = SmartScheduleTime;
  #endif
  	    requestingClient = NULL;
  	}
  	dispatchException &= ~DE_PRIORITYCHANGE;
      }
  #if defined(DDXBEFORERESET)
      ddxBeforeReset ();
  #endif
      KillAllClients();
      DEALLOCATE_LOCAL(clientReady);
      dispatchException &= ~DE_RESET;
  }
  
  #undef MAJOROP
  
  _X_EXPORT int
  ProcBadRequest(ClientPtr client)
  {
      return (BadRequest);
  }
  
  int
  ProcCreateWindow(ClientPtr client)
  {
      register WindowPtr pParent, pWin;
      REQUEST(xCreateWindowReq);
      int result;
      int len;
  
      REQUEST_AT_LEAST_SIZE(xCreateWindowReq);
      
      LEGAL_NEW_RESOURCE(stuff->wid, client);
      if (!(pParent = (WindowPtr)SecurityLookupWindow(stuff->parent, client,
  						    SecurityWriteAccess)))
          return BadWindow;
      len = client->req_len - (sizeof(xCreateWindowReq) >> 2);
      if (Ones(stuff->mask) != len)
          return BadLength;
      if (!stuff->width || !stuff->height)
      {
  	client->errorValue = 0;
          return BadValue;
      }
      pWin = CreateWindow(stuff->wid, pParent, stuff->x,
  			      stuff->y, stuff->width, stuff->height, 
  			      stuff->borderWidth, stuff->class,
  			      stuff->mask, (XID *) &stuff[1], 
  			      (int)stuff->depth, 
  			      client, stuff->visual, &result);
      if (pWin)
      {
  	Mask mask = pWin->eventMask;
  
  	pWin->eventMask = 0; /* subterfuge in case AddResource fails */
  	if (!AddResource(stuff->wid, RT_WINDOW, (pointer)pWin))
  	    return BadAlloc;
  	pWin->eventMask = mask;
      }
      if (client->noClientException != Success)
          return(client->noClientException);
      else
          return(result);
  }
  
  int
  ProcChangeWindowAttributes(register ClientPtr client)
  {
      register WindowPtr pWin;
      REQUEST(xChangeWindowAttributesReq);
      register int result;
      int len;
  
      REQUEST_AT_LEAST_SIZE(xChangeWindowAttributesReq);
      pWin = (WindowPtr)SecurityLookupWindow(stuff->window, client,
  					   SecurityWriteAccess);
      if (!pWin)
          return(BadWindow);
      len = client->req_len - (sizeof(xChangeWindowAttributesReq) >> 2);
      if (len != Ones(stuff->valueMask))
          return BadLength;
      result =  ChangeWindowAttributes(pWin, 
  				  stuff->valueMask, 
  				  (XID *) &stuff[1], 
  				  client);
      if (client->noClientException != Success)
          return(client->noClientException);
      else
          return(result);
  }
  
  int
  ProcGetWindowAttributes(register ClientPtr client)
  {
      register WindowPtr pWin;
      REQUEST(xResourceReq);
      xGetWindowAttributesReply wa;
  
      REQUEST_SIZE_MATCH(xResourceReq);
      pWin = (WindowPtr)SecurityLookupWindow(stuff->id, client,
  					   SecurityReadAccess);
      if (!pWin)
          return(BadWindow);
      GetWindowAttributes(pWin, client, &wa);
      WriteReplyToClient(client, sizeof(xGetWindowAttributesReply), &wa);
      return(client->noClientException);
  }
  
  int
  ProcDestroyWindow(register ClientPtr client)
  {
      register WindowPtr pWin;
      REQUEST(xResourceReq);
  
      REQUEST_SIZE_MATCH(xResourceReq);
      pWin = (WindowPtr)SecurityLookupWindow(stuff->id, client,
  					   SecurityDestroyAccess);
      if (!pWin)
          return(BadWindow);
      if (pWin->parent)
  	FreeResource(stuff->id, RT_NONE);
      return(client->noClientException);
  }
  
  int
  ProcDestroySubwindows(register ClientPtr client)
  {
      register WindowPtr pWin;
      REQUEST(xResourceReq);
  
      REQUEST_SIZE_MATCH(xResourceReq);
      pWin = (WindowPtr)SecurityLookupWindow(stuff->id, client,
  					   SecurityDestroyAccess);
      if (!pWin)
          return(BadWindow);
      DestroySubwindows(pWin, client);
      return(client->noClientException);
  }
  
  int
  ProcChangeSaveSet(register ClientPtr client)
  {
      register WindowPtr pWin;
      REQUEST(xChangeSaveSetReq);
      register int result;
  		  
      REQUEST_SIZE_MATCH(xChangeSaveSetReq);
      pWin = (WindowPtr)SecurityLookupWindow(stuff->window, client,
  					   SecurityReadAccess);
      if (!pWin)
          return(BadWindow);
      if (client->clientAsMask == (CLIENT_BITS(pWin->drawable.id)))
          return BadMatch;
      if ((stuff->mode == SetModeInsert) || (stuff->mode == SetModeDelete))
      {
          result = AlterSaveSetForClient(client, pWin, stuff->mode, FALSE, TRUE);
  	if (client->noClientException != Success)
  	    return(client->noClientException);
  	else
              return(result);
      }
      else
      {
  	client->errorValue = stuff->mode;
  	return( BadValue );
      }
  }
  
  int
  ProcReparentWindow(register ClientPtr client)
  {
      register WindowPtr pWin, pParent;
      REQUEST(xReparentWindowReq);
      register int result;
  
      REQUEST_SIZE_MATCH(xReparentWindowReq);
      pWin = (WindowPtr)SecurityLookupWindow(stuff->window, client,
  					   SecurityWriteAccess);
      if (!pWin)
          return(BadWindow);
      pParent = (WindowPtr)SecurityLookupWindow(stuff->parent, client,
  					      SecurityWriteAccess);
      if (!pParent)
          return(BadWindow);
      if (SAME_SCREENS(pWin->drawable, pParent->drawable))
      {
          if ((pWin->backgroundState == ParentRelative) &&
              (pParent->drawable.depth != pWin->drawable.depth))
              return BadMatch;
  	if ((pWin->drawable.class != InputOnly) &&
  	    (pParent->drawable.class == InputOnly))
  	    return BadMatch;
          result =  ReparentWindow(pWin, pParent, 
  			 (short)stuff->x, (short)stuff->y, client);
  	if (client->noClientException != Success)
              return(client->noClientException);
  	else
              return(result);
      }
      else 
          return (BadMatch);
  }
  
  int
  ProcMapWindow(register ClientPtr client)
  {
      register WindowPtr pWin;
      REQUEST(xResourceReq);
  
      REQUEST_SIZE_MATCH(xResourceReq);
      pWin = (WindowPtr)SecurityLookupWindow(stuff->id, client,
  					   SecurityReadAccess);
      if (!pWin)
          return(BadWindow);
      MapWindow(pWin, client);
             /* update cache to say it is mapped */
      return(client->noClientException);
  }
  
  int
  ProcMapSubwindows(register ClientPtr client)
  {
      register WindowPtr pWin;
      REQUEST(xResourceReq);
  
      REQUEST_SIZE_MATCH(xResourceReq);
      pWin = (WindowPtr)SecurityLookupWindow( stuff->id, client,
  					    SecurityReadAccess);
      if (!pWin)
          return(BadWindow);
      MapSubwindows(pWin, client);
             /* update cache to say it is mapped */
      return(client->noClientException);
  }
  
  int
  ProcUnmapWindow(register ClientPtr client)
  {
      register WindowPtr pWin;
      REQUEST(xResourceReq);
  
      REQUEST_SIZE_MATCH(xResourceReq);
      pWin = (WindowPtr)SecurityLookupWindow( stuff->id, client,
  					    SecurityReadAccess);
      if (!pWin)
          return(BadWindow);
      UnmapWindow(pWin, FALSE);
             /* update cache to say it is mapped */
      return(client->noClientException);
  }
  
  int
  ProcUnmapSubwindows(register ClientPtr client)
  {
      register WindowPtr pWin;
      REQUEST(xResourceReq);
  
      REQUEST_SIZE_MATCH(xResourceReq);
      pWin = (WindowPtr)SecurityLookupWindow( stuff->id, client,
  					    SecurityReadAccess);
      if (!pWin)
          return(BadWindow);
      UnmapSubwindows(pWin);
      return(client->noClientException);
  }
  
  int
  ProcConfigureWindow(register ClientPtr client)
  {
      register WindowPtr pWin;
      REQUEST(xConfigureWindowReq);
      register int result;
      int len;
  
      REQUEST_AT_LEAST_SIZE(xConfigureWindowReq);
      pWin = (WindowPtr)SecurityLookupWindow( stuff->window, client,
  					    SecurityWriteAccess);
      if (!pWin)
          return(BadWindow);
      len = client->req_len - (sizeof(xConfigureWindowReq) >> 2);
      if (Ones((Mask)stuff->mask) != len)
          return BadLength;
      result =  ConfigureWindow(pWin, (Mask)stuff->mask, (XID *) &stuff[1], 
  			      client);
      if (client->noClientException != Success)
          return(client->noClientException);
      else
          return(result);
  }
  
  int
  ProcCirculateWindow(register ClientPtr client)
  {
      register WindowPtr pWin;
      REQUEST(xCirculateWindowReq);
  
      REQUEST_SIZE_MATCH(xCirculateWindowReq);
      if ((stuff->direction != RaiseLowest) &&
  	(stuff->direction != LowerHighest))
      {
  	client->errorValue = stuff->direction;
          return BadValue;
      }
      pWin = (WindowPtr)SecurityLookupWindow(stuff->window, client,
  					   SecurityWriteAccess);
      if (!pWin)
          return(BadWindow);
      CirculateWindow(pWin, (int)stuff->direction, client);
      return(client->noClientException);
  }
  
  int
  GetGeometry(register ClientPtr client, xGetGeometryReply *rep)
  {
      register DrawablePtr pDraw;
      REQUEST(xResourceReq);
  
      REQUEST_SIZE_MATCH(xResourceReq);
      SECURITY_VERIFY_GEOMETRABLE (pDraw, stuff->id, client, SecurityReadAccess);
      rep->type = X_Reply;
      rep->length = 0;
      rep->sequenceNumber = client->sequence;
      rep->root = WindowTable[pDraw->pScreen->myNum]->drawable.id;
      rep->depth = pDraw->depth;
      rep->width = pDraw->width;
      rep->height = pDraw->height;
  
      /* XXX - Because the pixmap-implementation of the multibuffer extension 
       *       may have the buffer-id's drawable resource value be a pointer
       *       to the buffer's window instead of the buffer itself
       *       (this happens if the buffer is the displayed buffer),
       *       we also have to check that the id matches before we can
       *       truly say that it is a DRAWABLE_WINDOW.
       */
  
      if ((pDraw->type == UNDRAWABLE_WINDOW) ||
          ((pDraw->type == DRAWABLE_WINDOW) && (stuff->id == pDraw->id)))
      {
          register WindowPtr pWin = (WindowPtr)pDraw;
  	rep->x = pWin->origin.x - wBorderWidth (pWin);
  	rep->y = pWin->origin.y - wBorderWidth (pWin);
  	rep->borderWidth = pWin->borderWidth;
      }
      else /* DRAWABLE_PIXMAP or DRAWABLE_BUFFER */
      {
  	rep->x = rep->y = rep->borderWidth = 0;
      }
  
      return Success;
  }
  
  
  int
  ProcGetGeometry(register ClientPtr client)
  {
      xGetGeometryReply rep;
      int status;
  
      if ((status = GetGeometry(client, &rep)) != Success)
  	return status;
  
      WriteReplyToClient(client, sizeof(xGetGeometryReply), &rep);
      return(client->noClientException);
  }
  
  
  int
  ProcQueryTree(register ClientPtr client)
  {
      xQueryTreeReply reply;
      int numChildren = 0;
      register WindowPtr pChild, pWin, pHead;
      Window  *childIDs = (Window *)NULL;
      REQUEST(xResourceReq);
  
      REQUEST_SIZE_MATCH(xResourceReq);
      pWin = (WindowPtr)SecurityLookupWindow(stuff->id, client,
  					   SecurityReadAccess);
      if (!pWin)
          return(BadWindow);
      reply.type = X_Reply;
      reply.root = WindowTable[pWin->drawable.pScreen->myNum]->drawable.id;
      reply.sequenceNumber = client->sequence;
      if (pWin->parent)
  	reply.parent = pWin->parent->drawable.id;
      else
          reply.parent = (Window)None;
      pHead = RealChildHead(pWin);
      for (pChild = pWin->lastChild; pChild != pHead; pChild = pChild->prevSib)
  	numChildren++;
      if (numChildren)
      {
  	int curChild = 0;
  
  	childIDs = (Window *) ALLOCATE_LOCAL(numChildren * sizeof(Window));
  	if (!childIDs)
  	    return BadAlloc;
  	for (pChild = pWin->lastChild; pChild != pHead; pChild = pChild->prevSib)
  	    childIDs[curChild++] = pChild->drawable.id;
      }
      
      reply.nChildren = numChildren;
      reply.length = (numChildren * sizeof(Window)) >> 2;
      
      WriteReplyToClient(client, sizeof(xQueryTreeReply), &reply);
      if (numChildren)
      {
      	client->pSwapReplyFunc = (ReplySwapPtr) Swap32Write;
  	WriteSwappedDataToClient(client, numChildren * sizeof(Window), childIDs);
  	DEALLOCATE_LOCAL(childIDs);
      }
  
      return(client->noClientException);
  }
  
  int
  ProcInternAtom(register ClientPtr client)
  {
      Atom atom;
      char *tchar;
      REQUEST(xInternAtomReq);
  
      REQUEST_FIXED_SIZE(xInternAtomReq, stuff->nbytes);
      if ((stuff->onlyIfExists != xTrue) && (stuff->onlyIfExists != xFalse))
      {
  	client->errorValue = stuff->onlyIfExists;
          return(BadValue);
      }
      tchar = (char *) &stuff[1];
      atom = MakeAtom(tchar, stuff->nbytes, !stuff->onlyIfExists);
      if (atom != BAD_RESOURCE)
      {
  	xInternAtomReply reply;
  	reply.type = X_Reply;
  	reply.length = 0;
  	reply.sequenceNumber = client->sequence;
  	reply.atom = atom;
  	WriteReplyToClient(client, sizeof(xInternAtomReply), &reply);
  	return(client->noClientException);
      }
      else
  	return (BadAlloc);
  }
  
  int
  ProcGetAtomName(register ClientPtr client)
  {
      char *str;
      xGetAtomNameReply reply;
      int len;
      REQUEST(xResourceReq);
  
      REQUEST_SIZE_MATCH(xResourceReq);
      if ( (str = NameForAtom(stuff->id)) )
      {
  	len = strlen(str);
  	reply.type = X_Reply;
  	reply.length = (len + 3) >> 2;
  	reply.sequenceNumber = client->sequence;
  	reply.nameLength = len;
  	WriteReplyToClient(client, sizeof(xGetAtomNameReply), &reply);
  	(void)WriteToClient(client, len, str);
  	return(client->noClientException);
      }
      else 
      { 
  	client->errorValue = stuff->id;
  	return (BadAtom);
      }
  }
  
  #ifdef K5AUTH
  extern int k5_bad();
  #endif
  
  int
  ProcSetSelectionOwner(register ClientPtr client)
  {
      WindowPtr pWin;
      TimeStamp time;
      REQUEST(xSetSelectionOwnerReq);
  
      REQUEST_SIZE_MATCH(xSetSelectionOwnerReq);
      UpdateCurrentTime();
      time = ClientTimeToServerTime(stuff->time);
  
      /* If the client's time stamp is in the future relative to the server's
  	time stamp, do not set the selection, just return success. */
      if (CompareTimeStamps(time, currentTime) == LATER)
      	return Success;
      if (stuff->window != None)
      {
          pWin = (WindowPtr)SecurityLookupWindow(stuff->window, client,
  					       SecurityReadAccess);
          if (!pWin)
              return(BadWindow);
      }
      else
          pWin = (WindowPtr)None;
      if (ValidAtom(stuff->selection))
      {
  	int i = 0;
  
  	/*
  	 * First, see if the selection is already set... 
  	 */
  	while ((i < NumCurrentSelections) && 
  	       CurrentSelections[i].selection != stuff->selection) 
              i++;
          if (i < NumCurrentSelections)
          {        
  	    xEvent event;
  
  	    /* If the timestamp in client's request is in the past relative
  		to the time stamp indicating the last time the owner of the
  		selection was set, do not set the selection, just return 
  		success. */
              if (CompareTimeStamps(time, CurrentSelections[i].lastTimeChanged)
  		== EARLIER)
  		return Success;
  	    if (CurrentSelections[i].client &&
  		(!pWin || (CurrentSelections[i].client != client)))
  	    {
  		event.u.u.type = SelectionClear;
  		event.u.selectionClear.time = time.milliseconds;
  		event.u.selectionClear.window = CurrentSelections[i].window;
  		event.u.selectionClear.atom = CurrentSelections[i].selection;
  		(void) TryClientEvents (CurrentSelections[i].client, &event, 1,
  				NoEventMask, NoEventMask /* CantBeFiltered */,
  				NullGrab);
  	    }
  	}
  	else
  	{
  	    /*
  	     * It doesn't exist, so add it...
  	     */
  	    Selection *newsels;
  
  	    if (i == 0)
  		newsels = (Selection *)xalloc(sizeof(Selection));
  	    else
  		newsels = (Selection *)xrealloc(CurrentSelections,
  			    (NumCurrentSelections + 1) * sizeof(Selection));
  	    if (!newsels)
  		return BadAlloc;
  	    NumCurrentSelections++;
  	    CurrentSelections = newsels;
  	    CurrentSelections[i].selection = stuff->selection;
  	}
          CurrentSelections[i].lastTimeChanged = time;
  	CurrentSelections[i].window = stuff->window;
  	CurrentSelections[i].pWin = pWin;
  	CurrentSelections[i].client = (pWin ? client : NullClient);
  	if (SelectionCallback)
  	{
  	    SelectionInfoRec	info;
  
  	    info.selection = &CurrentSelections[i];
  	    info.kind= SelectionSetOwner;
  	    CallCallbacks(&SelectionCallback, &info);
  	}
  	return (client->noClientException);
      }
      else 
      {
  	client->errorValue = stuff->selection;
          return (BadAtom);
      }
  }
  
  int
  ProcGetSelectionOwner(register ClientPtr client)
  {
      REQUEST(xResourceReq);
  
      REQUEST_SIZE_MATCH(xResourceReq);
      if (ValidAtom(stuff->id))
      {
  	int i;
          xGetSelectionOwnerReply reply;
  
  	i = 0;
          while ((i < NumCurrentSelections) && 
  	       CurrentSelections[i].selection != stuff->id) i++;
          reply.type = X_Reply;
  	reply.length = 0;
  	reply.sequenceNumber = client->sequence;
          if (i < NumCurrentSelections)
              reply.owner = CurrentSelections[i].window;
          else
              reply.owner = None;
          WriteReplyToClient(client, sizeof(xGetSelectionOwnerReply), &reply);
          return(client->noClientException);
      }
      else            
      {
  	client->errorValue = stuff->id;
          return (BadAtom); 
      }
  }
  
  int
  ProcConvertSelection(register ClientPtr client)
  {
      Bool paramsOkay;
      xEvent event;
      WindowPtr pWin;
      REQUEST(xConvertSelectionReq);
  
      REQUEST_SIZE_MATCH(xConvertSelectionReq);
      pWin = (WindowPtr)SecurityLookupWindow(stuff->requestor, client,
  					   SecurityReadAccess);
      if (!pWin)
          return(BadWindow);
  
      paramsOkay = (ValidAtom(stuff->selection) && ValidAtom(stuff->target));
      if (stuff->property != None)
  	paramsOkay &= ValidAtom(stuff->property);
      if (paramsOkay)
      {
  	int i;
  
  	i = 0;
  	while ((i < NumCurrentSelections) && 
  	       CurrentSelections[i].selection != stuff->selection) i++;
  	if ((i < NumCurrentSelections) && 
  	    (CurrentSelections[i].window != None)
  #ifdef XACE
  	    && XaceHook(XACE_RESOURCE_ACCESS, client,
  			CurrentSelections[i].window, RT_WINDOW,
  			SecurityReadAccess, CurrentSelections[i].pWin)
  #endif
  	    )
  	{        
  	    event.u.u.type = SelectionRequest;
  	    event.u.selectionRequest.time = stuff->time;
  	    event.u.selectionRequest.owner = 
  			CurrentSelections[i].window;
  	    event.u.selectionRequest.requestor = stuff->requestor;
  	    event.u.selectionRequest.selection = stuff->selection;
  	    event.u.selectionRequest.target = stuff->target;
  	    event.u.selectionRequest.property = stuff->property;
  	    if (TryClientEvents(
  		CurrentSelections[i].client, &event, 1, NoEventMask,
  		NoEventMask /* CantBeFiltered */, NullGrab))
  		return (client->noClientException);
  	}
  	event.u.u.type = SelectionNotify;
  	event.u.selectionNotify.time = stuff->time;
  	event.u.selectionNotify.requestor = stuff->requestor;
  	event.u.selectionNotify.selection = stuff->selection;
  	event.u.selectionNotify.target = stuff->target;
  	event.u.selectionNotify.property = None;
  	(void) TryClientEvents(client, &event, 1, NoEventMask,
  			       NoEventMask /* CantBeFiltered */, NullGrab);
  	return (client->noClientException);
      }
      else 
      {
  	client->errorValue = stuff->property;
          return (BadAtom);
      }
  }
  
  int
  ProcGrabServer(register ClientPtr client)
  {
      REQUEST_SIZE_MATCH(xReq);
      if (grabState != GrabNone && client != grabClient)
      {
  	ResetCurrentRequest(client);
  	client->sequence--;
  	BITSET(grabWaiters, client->index);
  	IgnoreClient(client);
  	return(client->noClientException);
      }
      OnlyListenToOneClient(client);
      grabState = GrabKickout;
      grabClient = client;
  
      if (ServerGrabCallback)
      {
  	ServerGrabInfoRec grabinfo;
  	grabinfo.client = client;
  	grabinfo.grabstate  = SERVER_GRABBED;
  	CallCallbacks(&ServerGrabCallback, (pointer)&grabinfo);
      }
  
      return(client->noClientException);
  }
  
  static void
  UngrabServer(ClientPtr client)
  {
      int i;
  
      grabState = GrabNone;
      ListenToAllClients();
      for (i = mskcnt; --i >= 0 && !grabWaiters[i]; )
  	;
      if (i >= 0)
      {
  	i <<= 5;
  	while (!GETBIT(grabWaiters, i))
  	    i++;
  	BITCLEAR(grabWaiters, i);
  	AttendClient(clients[i]);
      }
  
      if (ServerGrabCallback)
      {
  	ServerGrabInfoRec grabinfo;
  	grabinfo.client = client;
  	grabinfo.grabstate  = SERVER_UNGRABBED;
  	CallCallbacks(&ServerGrabCallback, (pointer)&grabinfo);
      }
  }
  
  int
  ProcUngrabServer(register ClientPtr client)
  {
      REQUEST_SIZE_MATCH(xReq);
      UngrabServer(client);
      return(client->noClientException);
  }
  
  int
  ProcTranslateCoords(register ClientPtr client)
  {
      REQUEST(xTranslateCoordsReq);
  
      register WindowPtr pWin, pDst;
      xTranslateCoordsReply rep;
  
      REQUEST_SIZE_MATCH(xTranslateCoordsReq);
      pWin = (WindowPtr)SecurityLookupWindow(stuff->srcWid, client,
  					   SecurityReadAccess);
      if (!pWin)
          return(BadWindow);
      pDst = (WindowPtr)SecurityLookupWindow(stuff->dstWid, client,
  					   SecurityReadAccess);
      if (!pDst)
          return(BadWindow);
      rep.type = X_Reply;
      rep.length = 0;
      rep.sequenceNumber = client->sequence;
      if (!SAME_SCREENS(pWin->drawable, pDst->drawable))
      {
  	rep.sameScreen = xFalse;
          rep.child = None;
  	rep.dstX = rep.dstY = 0;
      }
      else
      {
  	INT16 x, y;
  	rep.sameScreen = xTrue;
  	rep.child = None;
  	/* computing absolute coordinates -- adjust to destination later */
  	x = pWin->drawable.x + stuff->srcX;
  	y = pWin->drawable.y + stuff->srcY;
  	pWin = pDst->firstChild;
  	while (pWin)
  	{
  #ifdef SHAPE
  	    BoxRec  box;
  #endif
  	    if ((pWin->mapped) &&
  		(x >= pWin->drawable.x - wBorderWidth (pWin)) &&
  		(x < pWin->drawable.x + (int)pWin->drawable.width +
  		 wBorderWidth (pWin)) &&
  		(y >= pWin->drawable.y - wBorderWidth (pWin)) &&
  		(y < pWin->drawable.y + (int)pWin->drawable.height +
  		 wBorderWidth (pWin))
  #ifdef SHAPE
  		/* When a window is shaped, a further check
  		 * is made to see if the point is inside
  		 * borderSize
  		 */
  		&& (!wBoundingShape(pWin) ||
  		    POINT_IN_REGION(pWin->drawable.pScreen, 
  					&pWin->borderSize, x, y, &box))
  		
  		&& (!wInputShape(pWin) ||
  		    POINT_IN_REGION(pWin->drawable.pScreen,
  				    wInputShape(pWin),
  				    x - pWin->drawable.x,
  				    y - pWin->drawable.y, &box))
  #endif
  		)
              {
  		rep.child = pWin->drawable.id;
  		pWin = (WindowPtr) NULL;
  	    }
  	    else
  		pWin = pWin->nextSib;
  	}
  	/* adjust to destination coordinates */
  	rep.dstX = x - pDst->drawable.x;
  	rep.dstY = y - pDst->drawable.y;
      }
      WriteReplyToClient(client, sizeof(xTranslateCoordsReply), &rep);
      return(client->noClientException);
  }
  
  int
  ProcOpenFont(register ClientPtr client)
  {
      int	err;
      REQUEST(xOpenFontReq);
  
      REQUEST_FIXED_SIZE(xOpenFontReq, stuff->nbytes);
      client->errorValue = stuff->fid;
      LEGAL_NEW_RESOURCE(stuff->fid, client);
      err = OpenFont(client, stuff->fid, (Mask) 0,
  		stuff->nbytes, (char *)&stuff[1]);
      if (err == Success)
      {
  	return(client->noClientException);
      }
      else
  	return err;
  }
  
  int
  ProcCloseFont(register ClientPtr client)
  {
      FontPtr pFont;
      REQUEST(xResourceReq);
  
      REQUEST_SIZE_MATCH(xResourceReq);
      pFont = (FontPtr)SecurityLookupIDByType(client, stuff->id, RT_FONT,
  					    SecurityDestroyAccess);
      if ( pFont != (FontPtr)NULL)	/* id was valid */
      {
          FreeResource(stuff->id, RT_NONE);
  	return(client->noClientException);
      }
      else
      {
  	client->errorValue = stuff->id;
          return (BadFont);
      }
  }
  
  int
  ProcQueryFont(register ClientPtr client)
  {
      xQueryFontReply	*reply;
      FontPtr pFont;
      register GC *pGC;
      REQUEST(xResourceReq);
  
      REQUEST_SIZE_MATCH(xResourceReq);
      client->errorValue = stuff->id;		/* EITHER font or gc */
      pFont = (FontPtr)SecurityLookupIDByType(client, stuff->id, RT_FONT,
  					    SecurityReadAccess);
      if (!pFont)
      {
  	  /* can't use VERIFY_GC because it might return BadGC */
  	pGC = (GC *) SecurityLookupIDByType(client, stuff->id, RT_GC,
  					    SecurityReadAccess);
          if (!pGC)
  	{
  	    client->errorValue = stuff->id;
              return(BadFont);     /* procotol spec says only error is BadFont */
  	}
  	pFont = pGC->font;
      }
  
      {
  	xCharInfo	*pmax = FONTINKMAX(pFont);
  	xCharInfo	*pmin = FONTINKMIN(pFont);
  	int		nprotoxcistructs;
  	int		rlength;
  
  	nprotoxcistructs = (
  	   pmax->rightSideBearing == pmin->rightSideBearing &&
  	   pmax->leftSideBearing == pmin->leftSideBearing &&
  	   pmax->descent == pmin->descent &&
  	   pmax->ascent == pmin->ascent &&
  	   pmax->characterWidth == pmin->characterWidth) ?
  		0 : N2dChars(pFont);
  
  	rlength = sizeof(xQueryFontReply) +
  	             FONTINFONPROPS(FONTCHARSET(pFont)) * sizeof(xFontProp)  +
  		     nprotoxcistructs * sizeof(xCharInfo);
  	reply = (xQueryFontReply *)ALLOCATE_LOCAL(rlength);
  	if(!reply)
  	{
  	    return(BadAlloc);
  	}
  
  	reply->type = X_Reply;
  	reply->length = (rlength - sizeof(xGenericReply)) >> 2;
  	reply->sequenceNumber = client->sequence;
  	QueryFont( pFont, reply, nprotoxcistructs);
  
          WriteReplyToClient(client, rlength, reply);
  	DEALLOCATE_LOCAL(reply);
  	return(client->noClientException);
      }
  }
  
  int
  ProcQueryTextExtents(register ClientPtr client)
  {
      REQUEST(xQueryTextExtentsReq);
      xQueryTextExtentsReply reply;
      FontPtr pFont;
      GC *pGC;
      ExtentInfoRec info;
      unsigned long length;
  
      REQUEST_AT_LEAST_SIZE(xQueryTextExtentsReq);
          
      pFont = (FontPtr)SecurityLookupIDByType(client, stuff->fid, RT_FONT,
  					    SecurityReadAccess);
      if (!pFont)
      {
          pGC = (GC *)SecurityLookupIDByType(client, stuff->fid, RT_GC,
  					   SecurityReadAccess);
          if (!pGC)
  	{
  	    client->errorValue = stuff->fid;
              return(BadFont);
  	}
  	pFont = pGC->font;
      }
      length = client->req_len - (sizeof(xQueryTextExtentsReq) >> 2);
      length = length << 1;
      if (stuff->oddLength)
      {
  	if (length == 0)
  	    return(BadLength);
          length--;
      }
      if (!QueryTextExtents(pFont, length, (unsigned char *)&stuff[1], &info))
  	return(BadAlloc);
      reply.type = X_Reply;
      reply.length = 0;
      reply.sequenceNumber = client->sequence;
      reply.drawDirection = info.drawDirection;
      reply.fontAscent = info.fontAscent;
      reply.fontDescent = info.fontDescent;
      reply.overallAscent = info.overallAscent;
      reply.overallDescent = info.overallDescent;
      reply.overallWidth = info.overallWidth;
      reply.overallLeft = info.overallLeft;
      reply.overallRight = info.overallRight;
      WriteReplyToClient(client, sizeof(xQueryTextExtentsReply), &reply);
      return(client->noClientException);
  }
  
  int
  ProcListFonts(register ClientPtr client)
  {
      REQUEST(xListFontsReq);
  
      REQUEST_FIXED_SIZE(xListFontsReq, stuff->nbytes);
  
      return ListFonts(client, (unsigned char *) &stuff[1], stuff->nbytes, 
  	stuff->maxNames);
  }
  
  int
  ProcListFontsWithInfo(register ClientPtr client)
  {
      REQUEST(xListFontsWithInfoReq);
  
      REQUEST_FIXED_SIZE(xListFontsWithInfoReq, stuff->nbytes);
  
      return StartListFontsWithInfo(client, stuff->nbytes,
  				  (unsigned char *) &stuff[1], stuff->maxNames);
  }
  
  /**
   *
   *  \param value must conform to DeleteType
   */
  int
  dixDestroyPixmap(pointer value, XID pid)
  {
      PixmapPtr pPixmap = (PixmapPtr)value;
      return (*pPixmap->drawable.pScreen->DestroyPixmap)(pPixmap);
  }
  
  int
  ProcCreatePixmap(register ClientPtr client)
  {
      PixmapPtr pMap;
      register DrawablePtr pDraw;
      REQUEST(xCreatePixmapReq);
      DepthPtr pDepth;
      register int i;
  
      REQUEST_SIZE_MATCH(xCreatePixmapReq);
      client->errorValue = stuff->pid;
      LEGAL_NEW_RESOURCE(stuff->pid, client);
      SECURITY_VERIFY_GEOMETRABLE (pDraw, stuff->drawable, client,
  				 SecurityReadAccess);
      if (!stuff->width || !stuff->height)
      {
  	client->errorValue = 0;
          return BadValue;
      }
      if (stuff->width > 32767 || stuff->height > 32767)
      {
  	/* It is allowed to try and allocate a pixmap which is larger than
  	 * 32767 in either dimension. However, all of the framebuffer code
  	 * is buggy and does not reliably draw to such big pixmaps, basically
  	 * because the Region data structure operates with signed shorts
  	 * for the rectangles in it.
  	 *
  	 * Furthermore, several places in the X server computes the
  	 * size in bytes of the pixmap and tries to store it in an
  	 * integer. This integer can overflow and cause the allocated size
  	 * to be much smaller.
  	 *
  	 * So, such big pixmaps are rejected here with a BadAlloc
  	 */
  	return BadAlloc;
      }
      if (stuff->depth != 1)
      {
          pDepth = pDraw->pScreen->allowedDepths;
          for (i=0; i<pDraw->pScreen->numDepths; i++, pDepth++)
  	   if (pDepth->depth == stuff->depth)
                 goto CreatePmap;
  	client->errorValue = stuff->depth;
          return BadValue;
      }
  CreatePmap:
      pMap = (PixmapPtr)(*pDraw->pScreen->CreatePixmap)
  		(pDraw->pScreen, stuff->width,
  		 stuff->height, stuff->depth);
      if (pMap)
      {
  	pMap->drawable.serialNumber = NEXT_SERIAL_NUMBER;
  	pMap->drawable.id = stuff->pid;
  	if (AddResource(stuff->pid, RT_PIXMAP, (pointer)pMap))
  	    return(client->noClientException);
      }
      return (BadAlloc);
  }
  
  int
  ProcFreePixmap(register ClientPtr client)
  {
      PixmapPtr pMap;
  
      REQUEST(xResourceReq);
  
      REQUEST_SIZE_MATCH(xResourceReq);
      pMap = (PixmapPtr)SecurityLookupIDByType(client, stuff->id, RT_PIXMAP,
  					     SecurityDestroyAccess);
      if (pMap) 
      {
  	FreeResource(stuff->id, RT_NONE);
  	return(client->noClientException);
      }
      else 
      {
  	client->errorValue = stuff->id;
  	return (BadPixmap);
      }
  }
  
  int
  ProcCreateGC(register ClientPtr client)
  {
      int error;
      GC *pGC;
      register DrawablePtr pDraw;
      unsigned len;
      REQUEST(xCreateGCReq);
  
      REQUEST_AT_LEAST_SIZE(xCreateGCReq);
      client->errorValue = stuff->gc;
      LEGAL_NEW_RESOURCE(stuff->gc, client);
      SECURITY_VERIFY_DRAWABLE (pDraw, stuff->drawable, client,
  			      SecurityReadAccess);
      len = client->req_len -  (sizeof(xCreateGCReq) >> 2);
      if (len != Ones(stuff->mask))
          return BadLength;
      pGC = (GC *)CreateGC(pDraw, stuff->mask, 
  			 (XID *) &stuff[1], &error);
      if (error != Success)
          return error;
      if (!AddResource(stuff->gc, RT_GC, (pointer)pGC))
  	return (BadAlloc);
      return(client->noClientException);
  }
  
  int
  ProcChangeGC(register ClientPtr client)
  {
      GC *pGC;
      REQUEST(xChangeGCReq);
      int result;
      unsigned len;
  		
      REQUEST_AT_LEAST_SIZE(xChangeGCReq);
      SECURITY_VERIFY_GC(pGC, stuff->gc, client, SecurityWriteAccess);
      len = client->req_len -  (sizeof(xChangeGCReq) >> 2);
      if (len != Ones(stuff->mask))
          return BadLength;
  
      result = dixChangeGC(client, pGC, stuff->mask, (CARD32 *) &stuff[1], 0);
      if (client->noClientException != Success)
          return(client->noClientException);
      else
      {
  	client->errorValue = clientErrorValue;
          return(result);
      }
  }
  
  int
  ProcCopyGC(register ClientPtr client)
  {
      register GC *dstGC;
      register GC *pGC;
      int result;
      REQUEST(xCopyGCReq);
  
      REQUEST_SIZE_MATCH(xCopyGCReq);
      SECURITY_VERIFY_GC( pGC, stuff->srcGC, client, SecurityReadAccess);
      SECURITY_VERIFY_GC( dstGC, stuff->dstGC, client, SecurityWriteAccess);
      if ((dstGC->pScreen != pGC->pScreen) || (dstGC->depth != pGC->depth))
          return (BadMatch);    
      result = CopyGC(pGC, dstGC, stuff->mask);
      if (client->noClientException != Success)
          return(client->noClientException);
      else
      {
  	client->errorValue = clientErrorValue;
          return(result);
      }
  }
  
  int
  ProcSetDashes(register ClientPtr client)
  {
      register GC *pGC;
      int result;
      REQUEST(xSetDashesReq);
  
      REQUEST_FIXED_SIZE(xSetDashesReq, stuff->nDashes);
      if (stuff->nDashes == 0)
      {
  	 client->errorValue = 0;
           return BadValue;
      }
  
      SECURITY_VERIFY_GC(pGC,stuff->gc, client, SecurityWriteAccess);
  
      result = SetDashes(pGC, stuff->dashOffset, stuff->nDashes,
  		       (unsigned char *)&stuff[1]);
      if (client->noClientException != Success)
          return(client->noClientException);
      else
      {
  	client->errorValue = clientErrorValue;
          return(result);
      }
  }
  
  int
  ProcSetClipRectangles(register ClientPtr client)
  {
      int	nr;
      int result;
      register GC *pGC;
      REQUEST(xSetClipRectanglesReq);
  
      REQUEST_AT_LEAST_SIZE(xSetClipRectanglesReq);
      if ((stuff->ordering != Unsorted) && (stuff->ordering != YSorted) &&
  	(stuff->ordering != YXSorted) && (stuff->ordering != YXBanded))
      {
  	client->errorValue = stuff->ordering;
          return BadValue;
      }
      SECURITY_VERIFY_GC(pGC,stuff->gc, client, SecurityWriteAccess);
  		 
      nr = (client->req_len << 2) - sizeof(xSetClipRectanglesReq);
      if (nr & 4)
  	return(BadLength);
      nr >>= 3;
      result = SetClipRects(pGC, stuff->xOrigin, stuff->yOrigin,
  			  nr, (xRectangle *)&stuff[1], (int)stuff->ordering);
      if (client->noClientException != Success)
          return(client->noClientException);
      else
          return(result);
  }
  
  int
  ProcFreeGC(register ClientPtr client)
  {
      register GC *pGC;
      REQUEST(xResourceReq);
  
      REQUEST_SIZE_MATCH(xResourceReq);
      SECURITY_VERIFY_GC(pGC, stuff->id, client, SecurityDestroyAccess);
      FreeResource(stuff->id, RT_NONE);
      return(client->noClientException);
  }
  
  int
  ProcClearToBackground(register ClientPtr client)
  {
      REQUEST(xClearAreaReq);
      register WindowPtr pWin;
  
      REQUEST_SIZE_MATCH(xClearAreaReq);
      pWin = (WindowPtr)SecurityLookupWindow(stuff->window, client,
  					   SecurityWriteAccess);
      if (!pWin)
          return(BadWindow);
      if (pWin->drawable.class == InputOnly)
      {
  	client->errorValue = stuff->window;
  	return (BadMatch);
      }		    
      if ((stuff->exposures != xTrue) && (stuff->exposures != xFalse))
      {
  	client->errorValue = stuff->exposures;
          return(BadValue);
      }
      (*pWin->drawable.pScreen->ClearToBackground)(pWin, stuff->x, stuff->y,
  			       stuff->width, stuff->height,
  			       (Bool)stuff->exposures);
      return(client->noClientException);
  }
  
  int
  ProcCopyArea(register ClientPtr client)
  {
      register DrawablePtr pDst;
      register DrawablePtr pSrc;
      register GC *pGC;
      REQUEST(xCopyAreaReq);
      RegionPtr pRgn;
  
      REQUEST_SIZE_MATCH(xCopyAreaReq);
  
      VALIDATE_DRAWABLE_AND_GC(stuff->dstDrawable, pDst, pGC, client); 
      if (stuff->dstDrawable != stuff->srcDrawable)
      {
  	SECURITY_VERIFY_DRAWABLE(pSrc, stuff->srcDrawable, client,
  				 SecurityReadAccess);
  	if ((pDst->pScreen != pSrc->pScreen) || (pDst->depth != pSrc->depth))
  	{
  	    client->errorValue = stuff->dstDrawable;
  	    return (BadMatch);
  	}
      }
      else
          pSrc = pDst;
  
      SET_DBE_SRCBUF(pSrc, stuff->srcDrawable);
  
      pRgn = (*pGC->ops->CopyArea)(pSrc, pDst, pGC, stuff->srcX, stuff->srcY,
  				 stuff->width, stuff->height, 
  				 stuff->dstX, stuff->dstY);
      if (pGC->graphicsExposures)
      {
  	(*pDst->pScreen->SendGraphicsExpose)
   		(client, pRgn, stuff->dstDrawable, X_CopyArea, 0);
  	if (pRgn)
  	    REGION_DESTROY(pDst->pScreen, pRgn);
      }
  
      return(client->noClientException);
  }
  
  int
  ProcCopyPlane(register ClientPtr client)
  {
      register DrawablePtr psrcDraw, pdstDraw;
      register GC *pGC;
      REQUEST(xCopyPlaneReq);
      RegionPtr pRgn;
  
      REQUEST_SIZE_MATCH(xCopyPlaneReq);
  
      VALIDATE_DRAWABLE_AND_GC(stuff->dstDrawable, pdstDraw, pGC, client);
      if (stuff->dstDrawable != stuff->srcDrawable)
      {
  	SECURITY_VERIFY_DRAWABLE(psrcDraw, stuff->srcDrawable, client,
  				 SecurityReadAccess);
  	if (pdstDraw->pScreen != psrcDraw->pScreen)
  	{
  	    client->errorValue = stuff->dstDrawable;
  	    return (BadMatch);
  	}
      }
      else
          psrcDraw = pdstDraw;
  
      SET_DBE_SRCBUF(psrcDraw, stuff->srcDrawable);
  
      /* Check to see if stuff->bitPlane has exactly ONE good bit set */
      if(stuff->bitPlane == 0 || (stuff->bitPlane & (stuff->bitPlane - 1)) ||
         (stuff->bitPlane > (1L << (psrcDraw->depth - 1))))
      {
         client->errorValue = stuff->bitPlane;
         return(BadValue);
      }
  
      pRgn = (*pGC->ops->CopyPlane)(psrcDraw, pdstDraw, pGC, stuff->srcX, stuff->srcY,
  				 stuff->width, stuff->height, 
  				 stuff->dstX, stuff->dstY, stuff->bitPlane);
      if (pGC->graphicsExposures)
      {
  	(*pdstDraw->pScreen->SendGraphicsExpose)
   		(client, pRgn, stuff->dstDrawable, X_CopyPlane, 0);
  	if (pRgn)
  	    REGION_DESTROY(pdstDraw->pScreen, pRgn);
      }
      return(client->noClientException);
  }
  
  int
  ProcPolyPoint(register ClientPtr client)
  {
      int npoint;
      register GC *pGC;
      register DrawablePtr pDraw;
      REQUEST(xPolyPointReq);
  
      REQUEST_AT_LEAST_SIZE(xPolyPointReq);
      if ((stuff->coordMode != CoordModeOrigin) && 
  	(stuff->coordMode != CoordModePrevious))
      {
  	client->errorValue = stuff->coordMode;
          return BadValue;
      }
      VALIDATE_DRAWABLE_AND_GC(stuff->drawable, pDraw, pGC, client); 
      npoint = ((client->req_len << 2) - sizeof(xPolyPointReq)) >> 2;
      if (npoint)
          (*pGC->ops->PolyPoint)(pDraw, pGC, stuff->coordMode, npoint,
  			  (xPoint *) &stuff[1]);
      return (client->noClientException);
  }
  
  int
  ProcPolyLine(register ClientPtr client)
  {
      int npoint;
      register GC *pGC;
      register DrawablePtr pDraw;
      REQUEST(xPolyLineReq);
  
      REQUEST_AT_LEAST_SIZE(xPolyLineReq);
      if ((stuff->coordMode != CoordModeOrigin) && 
  	(stuff->coordMode != CoordModePrevious))
      {
  	client->errorValue = stuff->coordMode;
          return BadValue;
      }
      VALIDATE_DRAWABLE_AND_GC(stuff->drawable, pDraw, pGC, client);
      npoint = ((client->req_len << 2) - sizeof(xPolyLineReq)) >> 2;
      if (npoint > 1)
  	(*pGC->ops->Polylines)(pDraw, pGC, stuff->coordMode, npoint, 
  			      (DDXPointPtr) &stuff[1]);
      return(client->noClientException);
  }
  
  int
  ProcPolySegment(register ClientPtr client)
  {
      int nsegs;
      register GC *pGC;
      register DrawablePtr pDraw;
      REQUEST(xPolySegmentReq);
  
      REQUEST_AT_LEAST_SIZE(xPolySegmentReq);
      VALIDATE_DRAWABLE_AND_GC(stuff->drawable, pDraw, pGC, client);
      nsegs = (client->req_len << 2) - sizeof(xPolySegmentReq);
      if (nsegs & 4)
  	return(BadLength);
      nsegs >>= 3;
      if (nsegs)
          (*pGC->ops->PolySegment)(pDraw, pGC, nsegs, (xSegment *) &stuff[1]);
      return (client->noClientException);
  }
  
  int
  ProcPolyRectangle (register ClientPtr client)
  {
      int nrects;
      register GC *pGC;
      register DrawablePtr pDraw;
      REQUEST(xPolyRectangleReq);
  
      REQUEST_AT_LEAST_SIZE(xPolyRectangleReq);
      VALIDATE_DRAWABLE_AND_GC(stuff->drawable, pDraw, pGC, client);
      nrects = (client->req_len << 2) - sizeof(xPolyRectangleReq);
      if (nrects & 4)
  	return(BadLength);
      nrects >>= 3;
      if (nrects)
          (*pGC->ops->PolyRectangle)(pDraw, pGC, 
  		    nrects, (xRectangle *) &stuff[1]);
      return(client->noClientException);
  }
  
  int
  ProcPolyArc(register ClientPtr client)
  {
      int		narcs;
      register GC *pGC;
      register DrawablePtr pDraw;
      REQUEST(xPolyArcReq);
  
      REQUEST_AT_LEAST_SIZE(xPolyArcReq);
      VALIDATE_DRAWABLE_AND_GC(stuff->drawable, pDraw, pGC, client);
      narcs = (client->req_len << 2) - sizeof(xPolyArcReq);
      if (narcs % sizeof(xArc))
  	return(BadLength);
      narcs /= sizeof(xArc);
      if (narcs)
          (*pGC->ops->PolyArc)(pDraw, pGC, narcs, (xArc *) &stuff[1]);
      return (client->noClientException);
  }
  
  int
  ProcFillPoly(register ClientPtr client)
  {
      int          things;
      register GC *pGC;
      register DrawablePtr pDraw;
      REQUEST(xFillPolyReq);
  
      REQUEST_AT_LEAST_SIZE(xFillPolyReq);
      if ((stuff->shape != Complex) && (stuff->shape != Nonconvex) &&  
  	(stuff->shape != Convex))
      {
  	client->errorValue = stuff->shape;
          return BadValue;
      }
      if ((stuff->coordMode != CoordModeOrigin) && 
  	(stuff->coordMode != CoordModePrevious))
      {
  	client->errorValue = stuff->coordMode;
          return BadValue;
      }
  
      VALIDATE_DRAWABLE_AND_GC(stuff->drawable, pDraw, pGC, client);
      things = ((client->req_len << 2) - sizeof(xFillPolyReq)) >> 2;
      if (things)
          (*pGC->ops->FillPolygon) (pDraw, pGC, stuff->shape,
  			 stuff->coordMode, things,
  			 (DDXPointPtr) &stuff[1]);
      return(client->noClientException);
  }
  
  int
  ProcPolyFillRectangle(register ClientPtr client)
  {
      int             things;
      register GC *pGC;
      register DrawablePtr pDraw;
      REQUEST(xPolyFillRectangleReq);
  
      REQUEST_AT_LEAST_SIZE(xPolyFillRectangleReq);
      VALIDATE_DRAWABLE_AND_GC(stuff->drawable, pDraw, pGC, client);
      things = (client->req_len << 2) - sizeof(xPolyFillRectangleReq);
      if (things & 4)
  	return(BadLength);
      things >>= 3;
  
      if (things)
          (*pGC->ops->PolyFillRect) (pDraw, pGC, things,
  		      (xRectangle *) &stuff[1]);
      return (client->noClientException);
  }
  
  int
  ProcPolyFillArc(register ClientPtr client)
  {
      int		narcs;
      register GC *pGC;
      register DrawablePtr pDraw;
      REQUEST(xPolyFillArcReq);
  
      REQUEST_AT_LEAST_SIZE(xPolyFillArcReq);
      VALIDATE_DRAWABLE_AND_GC(stuff->drawable, pDraw, pGC, client);
      narcs = (client->req_len << 2) - sizeof(xPolyFillArcReq);
      if (narcs % sizeof(xArc))
  	return(BadLength);
      narcs /= sizeof(xArc);
      if (narcs)
          (*pGC->ops->PolyFillArc) (pDraw, pGC, narcs, (xArc *) &stuff[1]);
      return (client->noClientException);
  }
  
  #ifdef MATCH_CLIENT_ENDIAN
  
  int
  ServerOrder (void)
  {
      int	    whichbyte = 1;
  
      if (*((char *) &whichbyte))
  	return LSBFirst;
      return MSBFirst;
  }
  
  #define ClientOrder(client) ((client)->swapped ? !ServerOrder() : ServerOrder())
  
  void
  ReformatImage (char *base, int nbytes, int bpp, int order)
  {
      switch (bpp) {
      case 1:	/* yuck */
  	if (BITMAP_BIT_ORDER != order)
  	    BitOrderInvert ((unsigned char *) base, nbytes);
  #if IMAGE_BYTE_ORDER != BITMAP_BIT_ORDER && BITMAP_SCANLINE_UNIT != 8
  	ReformatImage (base, nbytes, BITMAP_SCANLINE_UNIT, order);
  #endif
  	break;
      case 4:
  	break;  /* yuck */
      case 8:
  	break;
      case 16:
  	if (IMAGE_BYTE_ORDER != order)
  	    TwoByteSwap ((unsigned char *) base, nbytes);
  	break;
      case 32:
  	if (IMAGE_BYTE_ORDER != order)
  	    FourByteSwap ((unsigned char *) base, nbytes);
  	break;
      }
  }
  #else
  #define ReformatImage(b,n,bpp,o)
  #endif
  
  /* 64-bit server notes: the protocol restricts padding of images to
   * 8-, 16-, or 32-bits. We would like to have 64-bits for the server
   * to use internally. Removes need for internal alignment checking.
   * All of the PutImage functions could be changed individually, but
   * as currently written, they call other routines which require things
   * to be 64-bit padded on scanlines, so we changed things here.
   * If an image would be padded differently for 64- versus 32-, then
   * copy each scanline to a 64-bit padded scanline.
   * Also, we need to make sure that the image is aligned on a 64-bit
   * boundary, even if the scanlines are padded to our satisfaction.
   */
  int
  ProcPutImage(register ClientPtr client)
  {
      register	GC *pGC;
      register	DrawablePtr pDraw;
      long	length; 	/* length of scanline server padded */
      long 	lengthProto; 	/* length of scanline protocol padded */
      char	*tmpImage;
      REQUEST(xPutImageReq);
  
      REQUEST_AT_LEAST_SIZE(xPutImageReq);
      VALIDATE_DRAWABLE_AND_GC(stuff->drawable, pDraw, pGC, client);
      if (stuff->format == XYBitmap)
      {
          if ((stuff->depth != 1) ||
  	    (stuff->leftPad >= (unsigned int)screenInfo.bitmapScanlinePad))
              return BadMatch;
          length 	    = BitmapBytePad(stuff->width + stuff->leftPad);
      }
      else if (stuff->format == XYPixmap)
      {
          if ((pDraw->depth != stuff->depth) || 
  	    (stuff->leftPad >= (unsigned int)screenInfo.bitmapScanlinePad))
              return BadMatch;
          length      = BitmapBytePad(stuff->width + stuff->leftPad);
  	length      *= stuff->depth;
      }
      else if (stuff->format == ZPixmap)
      {
          if ((pDraw->depth != stuff->depth) || (stuff->leftPad != 0))
              return BadMatch;
          length      = PixmapBytePad(stuff->width, stuff->depth);
      }
      else
      {
  	client->errorValue = stuff->format;
          return BadValue;
      }
  
      tmpImage = (char *)&stuff[1];
      lengthProto = length;
  	
      if (((((lengthProto * stuff->height) + (unsigned)3) >> 2) + 
  	(sizeof(xPutImageReq) >> 2)) != client->req_len)
  	return BadLength;
  
      ReformatImage (tmpImage, lengthProto * stuff->height, 
  		   stuff->format == ZPixmap ? BitsPerPixel (stuff->depth) : 1,
  		   ClientOrder(client));
      
      (*pGC->ops->PutImage) (pDraw, pGC, stuff->depth, stuff->dstX, stuff->dstY,
  		  stuff->width, stuff->height, 
  		  stuff->leftPad, stuff->format, tmpImage);
  
       return (client->noClientException);
  }
  
  
  int
  DoGetImage(register ClientPtr client, int format, Drawable drawable, 
             int x, int y, int width, int height, 
             Mask planemask, xGetImageReply **im_return)
  {
      register DrawablePtr pDraw;
      int			nlines, linesPerBuf;
      register int	linesDone;
      long		widthBytesLine, length;
      Mask		plane = 0;
      char		*pBuf;
      xGetImageReply	xgi;
  #ifdef XACE
      RegionPtr pVisibleRegion = NULL;
  #endif
  
      if ((format != XYPixmap) && (format != ZPixmap))
      {
  	client->errorValue = format;
          return(BadValue);
      }
      SECURITY_VERIFY_DRAWABLE(pDraw, drawable, client, SecurityReadAccess);
      if(pDraw->type == DRAWABLE_WINDOW)
      {
        if( /* check for being viewable */
  	 !((WindowPtr) pDraw)->realized ||
  	  /* check for being on screen */
           pDraw->x + x < 0 ||
   	 pDraw->x + x + width > pDraw->pScreen->width ||
           pDraw->y + y < 0 ||
           pDraw->y + y + height > pDraw->pScreen->height ||
            /* check for being inside of border */
           x < - wBorderWidth((WindowPtr)pDraw) ||
           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;
  
      }
      else 
      {
  	widthBytesLine = BitmapBytePad(width);
  	plane = ((Mask)1) << (pDraw->depth - 1);
  	/* only planes asked for */
  	length = widthBytesLine * height *
  		 Ones(planemask & (plane | (plane - 1)));
  
      }
  
      xgi.length = length;
  
      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 & ((1L << LOG2_BYTES_PER_SCANLINE_PAD)-1)))
  	    {
  		linesPerBuf--;
  		length -= widthBytesLine;
  	    }
  	    while (length & ((1L << LOG2_BYTES_PER_SCANLINE_PAD)-1))
  	    {
  		linesPerBuf++;
  		length += widthBytesLine;
  	    }
  	}
  	if(!(pBuf = (char *) ALLOCATE_LOCAL(length)))
  	    return (BadAlloc);
  	WriteReplyToClient(client, sizeof (xGetImageReply), &xgi);
      }
  
  #ifdef XACE
      if (pDraw->type == DRAWABLE_WINDOW &&
  	!XaceHook(XACE_DRAWABLE_ACCESS, client, pDraw))
      {
  	pVisibleRegion = NotClippedByChildren((WindowPtr)pDraw);
  	if (pVisibleRegion)
  	{
  	    REGION_TRANSLATE(pDraw->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 XACE
  	    if (pVisibleRegion)
  		XaceCensorImage(client, pVisibleRegion, widthBytesLine,
  			pDraw, x, y + linesDone, width, 
  			nlines, format, pBuf);
  #endif
  
  	    /* Note that this is NOT a call to WriteSwappedDataToClient,
                 as we do NOT byte swap */
  	    if (!im_return)
  	    {
  		ReformatImage (pBuf, (int)(nlines * widthBytesLine),
  			       BitsPerPixel (pDraw->depth),
  			       ClientOrder(client));
  
  /* Don't split me, gcc pukes when you do */
  		(void)WriteToClient(client,
  				    (int)(nlines * widthBytesLine),
  				    pBuf);
  	    }
  	    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 XACE
  		    if (pVisibleRegion)
  			XaceCensorImage(client, pVisibleRegion,
  				widthBytesLine,
  				pDraw, x, y + linesDone, width, 
  				nlines, format, pBuf);
  #endif
  
  		    /* Note: NOT a call to WriteSwappedDataToClient,
  		       as we do NOT byte swap */
  		    if (im_return) {
  			pBuf += nlines * widthBytesLine;
  		    } else {
  			ReformatImage (pBuf, 
  				       (int)(nlines * widthBytesLine), 
  				       1,
  				       ClientOrder (client));
  
  /* Don't split me, gcc pukes when you do */
  			(void)WriteToClient(client,
  					(int)(nlines * widthBytesLine),
  					pBuf);
  		    }
  		    linesDone += nlines;
  		}
              }
  	}
      }
  #ifdef XACE
      if (pVisibleRegion)
  	REGION_DESTROY(pDraw->pScreen, pVisibleRegion);
  #endif
      if (!im_return)
  	DEALLOCATE_LOCAL(pBuf);
      return (client->noClientException);
  }
  
  int
  ProcGetImage(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(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(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(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(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(BadMatch);
  }
  
  int
  ProcFreeColormap(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(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(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(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(register ClientPtr client)
  {
      xListInstalledColormapsReply *preply; 
      int nummaps;
      WindowPtr pWin;
      REQUEST(xResourceReq);
  
      REQUEST_SIZE_MATCH(xResourceReq);
      pWin = (WindowPtr)SecurityLookupWindow(stuff->id, client,
  					   SecurityReadAccess);
  
      if (!pWin)
          return(BadWindow);
  
      preply = (xListInstalledColormapsReply *) 
  		ALLOCATE_LOCAL(sizeof(xListInstalledColormapsReply) +
  		     pWin->drawable.pScreen->maxInstalledCmaps *
  		     sizeof(Colormap));
      if(!preply)
          return(BadAlloc);
  
      preply->type = X_Reply;
      preply->sequenceNumber = client->sequence;
      nummaps = (*pWin->drawable.pScreen->ListInstalledColormaps)
          (pWin->drawable.pScreen, (Colormap *)&preply[1]);
      preply->nColormaps = nummaps;
      preply->length = nummaps;
      WriteReplyToClient(client, sizeof (xListInstalledColormapsReply), preply);
      client->pSwapReplyFunc = (ReplySwapPtr) Swap32Write;
      WriteSwappedDataToClient(client, nummaps * sizeof(Colormap), &preply[1]);
      DEALLOCATE_LOCAL(preply);
      return(client->noClientException);
  }
  
  int
  ProcAllocColor (register ClientPtr client)
  {
      ColormapPtr pmap;
      int	retval;
      xAllocColorReply acr;
      REQUEST(xAllocColorReq);
  
      REQUEST_SIZE_MATCH(xAllocColorReq);
      pmap = (ColormapPtr)SecurityLookupIDByType(client, stuff->cmap,
  					RT_COLORMAP, SecurityWriteAccess);
      if (pmap)
      {
  	acr.type = X_Reply;
  	acr.length = 0;
  	acr.sequenceNumber = client->sequence;
  	acr.red = stuff->red;
  	acr.green = stuff->green;
  	acr.blue = stuff->blue;
  	acr.pixel = 0;
  	if( (retval = AllocColor(pmap, &acr.red, &acr.green, &acr.blue,
  	                       &acr.pixel, client->index)) )
  	{
              if (client->noClientException != Success)
                  return(client->noClientException);
  	    else
  	        return (retval);
  	}
  #ifdef PANORAMIX
  	if (noPanoramiXExtension || !pmap->pScreen->myNum)
  #endif
          WriteReplyToClient(client, sizeof(xAllocColorReply), &acr);
  	return (client->noClientException);
  
      }
      else
      {
          client->errorValue = stuff->cmap;
          return (BadColor);
      }
  }
  
  int
  ProcAllocNamedColor (register ClientPtr client)
  {
      ColormapPtr pcmp;
      REQUEST(xAllocNamedColorReq);
  
      REQUEST_FIXED_SIZE(xAllocNamedColorReq, stuff->nbytes);
      pcmp = (ColormapPtr)SecurityLookupIDByType(client, stuff->cmap,
  					    RT_COLORMAP, SecurityWriteAccess);
      if (pcmp)
      {
  	int		retval;
  
  	xAllocNamedColorReply ancr;
  
  	ancr.type = X_Reply;
  	ancr.length = 0;
  	ancr.sequenceNumber = client->sequence;
  
  	if(OsLookupColor(pcmp->pScreen->myNum, (char *)&stuff[1], stuff->nbytes,
  	                 &ancr.exactRed, &ancr.exactGreen, &ancr.exactBlue))
  	{
  	    ancr.screenRed = ancr.exactRed;
  	    ancr.screenGreen = ancr.exactGreen;
  	    ancr.screenBlue = ancr.exactBlue;
  	    ancr.pixel = 0;
  	    if( (retval = AllocColor(pcmp,
  	                 &ancr.screenRed, &ancr.screenGreen, &ancr.screenBlue,
  			 &ancr.pixel, client->index)) )
  	    {
                  if (client->noClientException != Success)
                      return(client->noClientException);
                  else
      	            return(retval);
  	    }
  #ifdef PANORAMIX
  	    if (noPanoramiXExtension || !pcmp->pScreen->myNum)
  #endif
              WriteReplyToClient(client, sizeof (xAllocNamedColorReply), &ancr);
  	    return (client->noClientException);
  	}
  	else
  	    return(BadName);
  	
      }
      else
      {
          client->errorValue = stuff->cmap;
          return (BadColor);
      }
  }
  
  int
  ProcAllocColorCells (register ClientPtr client)
  {
      ColormapPtr pcmp;
      REQUEST(xAllocColorCellsReq);
  
      REQUEST_SIZE_MATCH(xAllocColorCellsReq);
      pcmp = (ColormapPtr)SecurityLookupIDByType(client, stuff->cmap,
  					RT_COLORMAP, SecurityWriteAccess);
      if (pcmp)
      {
  	xAllocColorCellsReply	accr;
  	int			npixels, nmasks, retval;
  	long			length;
  	Pixel			*ppixels, *pmasks;
  
  	npixels = stuff->colors;
  	if (!npixels)
  	{
  	    client->errorValue = npixels;
  	    return (BadValue);
  	}
  	if (stuff->contiguous != xTrue && stuff->contiguous != xFalse)
  	{
  	    client->errorValue = stuff->contiguous;
  	    return (BadValue);
  	}
  	nmasks = stuff->planes;
  	length = ((long)npixels + (long)nmasks) * sizeof(Pixel);
  	ppixels = (Pixel *)ALLOCATE_LOCAL(length);
  	if(!ppixels)
              return(BadAlloc);
  	pmasks = ppixels + npixels;
  
  	if( (retval = AllocColorCells(client->index, pcmp, npixels, nmasks, 
  				    (Bool)stuff->contiguous, ppixels, pmasks)) )
  	{
  	    DEALLOCATE_LOCAL(ppixels);
              if (client->noClientException != Success)
                  return(client->noClientException);
  	    else
  	        return(retval);
  	}
  #ifdef PANORAMIX
  	if (noPanoramiXExtension || !pcmp->pScreen->myNum)
  #endif
  	{
  	    accr.type = X_Reply;
  	    accr.length = length >> 2;
  	    accr.sequenceNumber = client->sequence;
  	    accr.nPixels = npixels;
  	    accr.nMasks = nmasks;
  	    WriteReplyToClient(client, sizeof (xAllocColorCellsReply), &accr);
  	    client->pSwapReplyFunc = (ReplySwapPtr) Swap32Write;
  	    WriteSwappedDataToClient(client, length, ppixels);
  	}
  	DEALLOCATE_LOCAL(ppixels);
          return (client->noClientException);        
      }
      else
      {
          client->errorValue = stuff->cmap;
          return (BadColor);
      }
  }
  
  int
  ProcAllocColorPlanes(register ClientPtr client)
  {
      ColormapPtr pcmp;
      REQUEST(xAllocColorPlanesReq);
  
      REQUEST_SIZE_MATCH(xAllocColorPlanesReq);
      pcmp = (ColormapPtr)SecurityLookupIDByType(client, stuff->cmap,
  					RT_COLORMAP, SecurityWriteAccess);
      if (pcmp)
      {
  	xAllocColorPlanesReply	acpr;
  	int			npixels, retval;
  	long			length;
  	Pixel			*ppixels;
  
  	npixels = stuff->colors;
  	if (!npixels)
  	{
  	    client->errorValue = npixels;
  	    return (BadValue);
  	}
  	if (stuff->contiguous != xTrue && stuff->contiguous != xFalse)
  	{
  	    client->errorValue = stuff->contiguous;
  	    return (BadValue);
  	}
  	acpr.type = X_Reply;
  	acpr.sequenceNumber = client->sequence;
  	acpr.nPixels = npixels;
  	length = (long)npixels * sizeof(Pixel);
  	ppixels = (Pixel *)ALLOCATE_LOCAL(length);
  	if(!ppixels)
              return(BadAlloc);
  	if( (retval = AllocColorPlanes(client->index, pcmp, npixels,
  	    (int)stuff->red, (int)stuff->green, (int)stuff->blue,
  	    (Bool)stuff->contiguous, ppixels,
  	    &acpr.redMask, &acpr.greenMask, &acpr.blueMask)) )
  	{
              DEALLOCATE_LOCAL(ppixels);
              if (client->noClientException != Success)
                  return(client->noClientException);
  	    else
  	        return(retval);
  	}
  	acpr.length = length >> 2;
  #ifdef PANORAMIX
  	if (noPanoramiXExtension || !pcmp->pScreen->myNum)
  #endif
  	{
  	    WriteReplyToClient(client, sizeof(xAllocColorPlanesReply), &acpr);
  	    client->pSwapReplyFunc = (ReplySwapPtr) Swap32Write;
  	    WriteSwappedDataToClient(client, length, ppixels);
  	}
  	DEALLOCATE_LOCAL(ppixels);
          return (client->noClientException);        
      }
      else
      {
          client->errorValue = stuff->cmap;
          return (BadColor);
      }
  }
  
  int
  ProcFreeColors(register ClientPtr client)
  {
      ColormapPtr pcmp;
      REQUEST(xFreeColorsReq);
  
      REQUEST_AT_LEAST_SIZE(xFreeColorsReq);
      pcmp = (ColormapPtr)SecurityLookupIDByType(client, stuff->cmap,
  					RT_COLORMAP, SecurityWriteAccess);
      if (pcmp)
      {
  	int	count;
          int     retval;
  
  	if(pcmp->flags & AllAllocated)
  	    return(BadAccess);
  	count = ((client->req_len << 2)- sizeof(xFreeColorsReq)) >> 2;
  	retval =  FreeColors(pcmp, client->index, count,
  	    (Pixel *)&stuff[1], (Pixel)stuff->planeMask);
          if (client->noClientException != Success)
              return(client->noClientException);
          else
  	{
  	    client->errorValue = clientErrorValue;
              return(retval);
  	}
  
      }
      else
      {
          client->errorValue = stuff->cmap;
          return (BadColor);
      }
  }
  
  int
  ProcStoreColors (ClientPtr client)
  {
      ColormapPtr pcmp;
      REQUEST(xStoreColorsReq);
  
      REQUEST_AT_LEAST_SIZE(xStoreColorsReq);
      pcmp = (ColormapPtr)SecurityLookupIDByType(client, stuff->cmap,
  					RT_COLORMAP, SecurityWriteAccess);
      if (pcmp)
      {
  	int	count;
          int     retval;
  
          count = (client->req_len << 2) - sizeof(xStoreColorsReq);
  	if (count % sizeof(xColorItem))
  	    return(BadLength);
  	count /= sizeof(xColorItem);
  	retval = StoreColors(pcmp, count, (xColorItem *)&stuff[1]);
          if (client->noClientException != Success)
              return(client->noClientException);
          else
  	{
  	    client->errorValue = clientErrorValue;
              return(retval);
  	}
      }
      else
      {
          client->errorValue = stuff->cmap;
          return (BadColor);
      }
  }
  
  int
  ProcStoreNamedColor (register ClientPtr client)
  {
      ColormapPtr pcmp;
      REQUEST(xStoreNamedColorReq);
  
      REQUEST_FIXED_SIZE(xStoreNamedColorReq, stuff->nbytes);
      pcmp = (ColormapPtr)SecurityLookupIDByType(client, stuff->cmap,
  					RT_COLORMAP, SecurityWriteAccess);
      if (pcmp)
      {
  	xColorItem	def;
          int             retval;
  
  	if(OsLookupColor(pcmp->pScreen->myNum, (char *)&stuff[1],
  	                 stuff->nbytes, &def.red, &def.green, &def.blue))
  	{
  	    def.flags = stuff->flags;
  	    def.pixel = stuff->pixel;
  	    retval = StoreColors(pcmp, 1, &def);
              if (client->noClientException != Success)
                  return(client->noClientException);
  	    else
  		return(retval);
  	}
          return (BadName);        
      }
      else
      {
          client->errorValue = stuff->cmap;
          return (BadColor);
      }
  }
  
  int
  ProcQueryColors(register ClientPtr client)
  {
      ColormapPtr pcmp;
      REQUEST(xQueryColorsReq);
  
      REQUEST_AT_LEAST_SIZE(xQueryColorsReq);
      pcmp = (ColormapPtr)SecurityLookupIDByType(client, stuff->cmap,
  					RT_COLORMAP, SecurityReadAccess);
      if (pcmp)
      {
  	int			count, retval;
  	xrgb 			*prgbs;
  	xQueryColorsReply	qcr;
  
  	count = ((client->req_len << 2) - sizeof(xQueryColorsReq)) >> 2;
  	prgbs = (xrgb *)ALLOCATE_LOCAL(count * sizeof(xrgb));
  	if(!prgbs && count)
              return(BadAlloc);
  	if( (retval = QueryColors(pcmp, count, (Pixel *)&stuff[1], prgbs)) )
  	{
     	    if (prgbs) DEALLOCATE_LOCAL(prgbs);
  	    if (client->noClientException != Success)
                  return(client->noClientException);
  	    else
  	    {
  		client->errorValue = clientErrorValue;
  	        return (retval);
  	    }
  	}
  	qcr.type = X_Reply;
  	qcr.length = (count * sizeof(xrgb)) >> 2;
  	qcr.sequenceNumber = client->sequence;
  	qcr.nColors = count;
  	WriteReplyToClient(client, sizeof(xQueryColorsReply), &qcr);
  	if (count)
  	{
  	    client->pSwapReplyFunc = (ReplySwapPtr) SQColorsExtend;
  	    WriteSwappedDataToClient(client, count * sizeof(xrgb), prgbs);
  	}
  	if (prgbs) DEALLOCATE_LOCAL(prgbs);
  	return(client->noClientException);
  	
      }
      else
      {
          client->errorValue = stuff->cmap;
          return (BadColor);
      }
  } 
  
  int
  ProcLookupColor(register ClientPtr client)
  {
      ColormapPtr pcmp;
      REQUEST(xLookupColorReq);
  
      REQUEST_FIXED_SIZE(xLookupColorReq, stuff->nbytes);
      pcmp = (ColormapPtr)SecurityLookupIDByType(client, stuff->cmap,
  					RT_COLORMAP, SecurityReadAccess);
      if (pcmp)
      {
  	xLookupColorReply lcr;
  
  	if(OsLookupColor(pcmp->pScreen->myNum, (char *)&stuff[1], stuff->nbytes,
  	                 &lcr.exactRed, &lcr.exactGreen, &lcr.exactBlue))
  	{
  	    lcr.type = X_Reply;
  	    lcr.length = 0;
  	    lcr.sequenceNumber = client->sequence;
  	    lcr.screenRed = lcr.exactRed;
  	    lcr.screenGreen = lcr.exactGreen;
  	    lcr.screenBlue = lcr.exactBlue;
  	    (*pcmp->pScreen->ResolveColor)(&lcr.screenRed,
  	                                   &lcr.screenGreen,
  					   &lcr.screenBlue,
  					   pcmp->pVisual);
  	    WriteReplyToClient(client, sizeof(xLookupColorReply), &lcr);
  	    return(client->noClientException);
  	}
          return (BadName);        
      }
      else
      {
          client->errorValue = stuff->cmap;
          return (BadColor);
      }
  }
  
  int
  ProcCreateCursor (register ClientPtr client)
  {
      CursorPtr	pCursor;
  
      register PixmapPtr 	src;
      register PixmapPtr 	msk;
      unsigned char *	srcbits;
      unsigned char *	mskbits;
      unsigned short	width, height;
      long		n;
      CursorMetricRec cm;
  
  
      REQUEST(xCreateCursorReq);
  
      REQUEST_SIZE_MATCH(xCreateCursorReq);
      LEGAL_NEW_RESOURCE(stuff->cid, client);
  
      src = (PixmapPtr)SecurityLookupIDByType(client, stuff->source,
  					      RT_PIXMAP, SecurityReadAccess);
      msk = (PixmapPtr)SecurityLookupIDByType(client, stuff->mask,
  					      RT_PIXMAP, SecurityReadAccess);
      if (   src == (PixmapPtr)NULL)
      {
  	client->errorValue = stuff->source;
  	return (BadPixmap);
      }
      if ( msk == (PixmapPtr)NULL)
      {
  	if (stuff->mask != None)
  	{
  	    client->errorValue = stuff->mask;
  	    return (BadPixmap);
  	}
      }
      else if (  src->drawable.width != msk->drawable.width
  	    || src->drawable.height != msk->drawable.height
  	    || src->drawable.depth != 1
  	    || msk->drawable.depth != 1)
  	return (BadMatch);
  
      width = src->drawable.width;
      height = src->drawable.height;
  
      if ( stuff->x > width 
        || stuff->y > height )
  	return (BadMatch);
  
      n = BitmapBytePad(width)*height;
      srcbits = (unsigned char *)xalloc(n);
      if (!srcbits)
  	return (BadAlloc);
      mskbits = (unsigned char *)xalloc(n);
      if (!mskbits)
      {
  	xfree(srcbits);
  	return (BadAlloc);
      }
  
      /* zeroing the (pad) bits helps some ddx cursor handling */
      bzero((char *)srcbits, n);
      (* src->drawable.pScreen->GetImage)( (DrawablePtr)src, 0, 0, width, height,
  					 XYPixmap, 1, (pointer)srcbits);
      if ( msk == (PixmapPtr)NULL)
      {
  	register unsigned char *bits = mskbits;
  	while (--n >= 0)
  	    *bits++ = ~0;
      }
      else
      {
  	/* zeroing the (pad) bits helps some ddx cursor handling */
  	bzero((char *)mskbits, n);
  	(* msk->drawable.pScreen->GetImage)( (DrawablePtr)msk, 0, 0, width,
  					height, XYPixmap, 1, (pointer)mskbits);
      }
      cm.width = width;
      cm.height = height;
      cm.xhot = stuff->x;
      cm.yhot = stuff->y;
      pCursor = AllocCursor( srcbits, mskbits, &cm,
  	    stuff->foreRed, stuff->foreGreen, stuff->foreBlue,
  	    stuff->backRed, stuff->backGreen, stuff->backBlue);
  
      if (pCursor && AddResource(stuff->cid, RT_CURSOR, (pointer)pCursor))
  	    return (client->noClientException);
      return BadAlloc;
  }
  
  int
  ProcCreateGlyphCursor (register ClientPtr client)
  {
      CursorPtr pCursor;
      int res;
  
      REQUEST(xCreateGlyphCursorReq);
  
      REQUEST_SIZE_MATCH(xCreateGlyphCursorReq);
      LEGAL_NEW_RESOURCE(stuff->cid, client);
  
      res = AllocGlyphCursor(stuff->source, stuff->sourceChar,
  			   stuff->mask, stuff->maskChar,
  			   stuff->foreRed, stuff->foreGreen, stuff->foreBlue,
  			   stuff->backRed, stuff->backGreen, stuff->backBlue,
  			   &pCursor, client);
      if (res != Success)
  	return res;
      if (AddResource(stuff->cid, RT_CURSOR, (pointer)pCursor))
  	return client->noClientException;
      return BadAlloc;
  }
  
  
  int
  ProcFreeCursor (register ClientPtr client)
  {
      CursorPtr pCursor;
      REQUEST(xResourceReq);
  
      REQUEST_SIZE_MATCH(xResourceReq);
      pCursor = (CursorPtr)SecurityLookupIDByType(client, stuff->id,
  					RT_CURSOR, SecurityDestroyAccess);
      if (pCursor) 
      {
  	FreeResource(stuff->id, RT_NONE);
  	return (client->noClientException);
      }
      else 
      {
  	client->errorValue = stuff->id;
  	return (BadCursor);
      }
  }
  
  int
  ProcQueryBestSize (register ClientPtr client)
  {
      xQueryBestSizeReply	reply;
      register DrawablePtr pDraw;
      ScreenPtr pScreen;
      REQUEST(xQueryBestSizeReq);
  
      REQUEST_SIZE_MATCH(xQueryBestSizeReq);
      if ((stuff->class != CursorShape) && 
  	(stuff->class != TileShape) && 
  	(stuff->class != StippleShape))
      {
  	client->errorValue = stuff->class;
          return(BadValue);
      }
      SECURITY_VERIFY_GEOMETRABLE (pDraw, stuff->drawable, client,
  				 SecurityReadAccess);
      if (stuff->class != CursorShape && pDraw->type == UNDRAWABLE_WINDOW)
  	return (BadMatch);
      pScreen = pDraw->pScreen;
      (* pScreen->QueryBestSize)(stuff->class, &stuff->width,
  			       &stuff->height, pScreen);
      reply.type = X_Reply;
      reply.length = 0;
      reply.sequenceNumber = client->sequence;
      reply.width = stuff->width;
      reply.height = stuff->height;
      WriteReplyToClient(client, sizeof(xQueryBestSizeReply), &reply);
      return (client->noClientException);
  }
  
  
  int
  ProcSetScreenSaver (register ClientPtr client)
  {
      int blankingOption, exposureOption;
      REQUEST(xSetScreenSaverReq);
  
      REQUEST_SIZE_MATCH(xSetScreenSaverReq);
      blankingOption = stuff->preferBlank;
      if ((blankingOption != DontPreferBlanking) &&
          (blankingOption != PreferBlanking) &&
          (blankingOption != DefaultBlanking))
      {
  	client->errorValue = blankingOption;
          return BadValue;
      }
      exposureOption = stuff->allowExpose;
      if ((exposureOption != DontAllowExposures) &&
          (exposureOption != AllowExposures) &&
          (exposureOption != DefaultExposures))
      {
  	client->errorValue = exposureOption;
          return BadValue;
      }
      if (stuff->timeout < -1)
      {
  	client->errorValue = stuff->timeout;
          return BadValue;
      }
      if (stuff->interval < -1)
      {
  	client->errorValue = stuff->interval;
          return BadValue;
      }
  
      if (blankingOption == DefaultBlanking)
  	ScreenSaverBlanking = defaultScreenSaverBlanking;
      else
  	ScreenSaverBlanking = blankingOption; 
      if (exposureOption == DefaultExposures)
  	ScreenSaverAllowExposures = defaultScreenSaverAllowExposures;
      else
  	ScreenSaverAllowExposures = exposureOption;
  
      if (stuff->timeout >= 0)
  	ScreenSaverTime = stuff->timeout * MILLI_PER_SECOND;
      else 
  	ScreenSaverTime = defaultScreenSaverTime;
      if (stuff->interval >= 0)
  	ScreenSaverInterval = stuff->interval * MILLI_PER_SECOND;
      else
  	ScreenSaverInterval = defaultScreenSaverInterval;
  
      SetScreenSaverTimer();
      return (client->noClientException);
  }
  
  int
  ProcGetScreenSaver(register ClientPtr client)
  {
      xGetScreenSaverReply rep;
  
      REQUEST_SIZE_MATCH(xReq);
      rep.type = X_Reply;
      rep.length = 0;
      rep.sequenceNumber = client->sequence;
      rep.timeout = ScreenSaverTime / MILLI_PER_SECOND;
      rep.interval = ScreenSaverInterval / MILLI_PER_SECOND;
      rep.preferBlanking = ScreenSaverBlanking;
      rep.allowExposures = ScreenSaverAllowExposures;
      WriteReplyToClient(client, sizeof(xGetScreenSaverReply), &rep);
      return (client->noClientException);
  }
  
  int
  ProcChangeHosts(register ClientPtr client)
  {
      REQUEST(xChangeHostsReq);
      int result;
  
      REQUEST_FIXED_SIZE(xChangeHostsReq, stuff->hostLength);
  
      if(stuff->mode == HostInsert)
  	result = AddHost(client, (int)stuff->hostFamily,
  			 stuff->hostLength, (pointer)&stuff[1]);
      else if (stuff->mode == HostDelete)
  	result = RemoveHost(client, (int)stuff->hostFamily, 
  			    stuff->hostLength, (pointer)&stuff[1]);  
      else
      {
  	client->errorValue = stuff->mode;
          return BadValue;
      }
      if (!result)
  	result = client->noClientException;
      return (result);
  }
  
  int
  ProcListHosts(register ClientPtr client)
  {
      xListHostsReply reply;
      int	len, nHosts, result;
      pointer	pdata;
      /* REQUEST(xListHostsReq); */
  
      REQUEST_SIZE_MATCH(xListHostsReq);
  #ifdef XACE
      /* untrusted clients can't list hosts */
      if (!XaceHook(XACE_HOSTLIST_ACCESS, client, SecurityReadAccess))
      {
  	return BadAccess;
      }
  #endif
      result = GetHosts(&pdata, &nHosts, &len, &reply.enabled);
      if (result != Success)
  	return(result);
      reply.type = X_Reply;
      reply.sequenceNumber = client->sequence;
      reply.nHosts = nHosts;
      reply.length = len >> 2;
      WriteReplyToClient(client, sizeof(xListHostsReply), &reply);
      if (nHosts)
      {
  	client->pSwapReplyFunc = (ReplySwapPtr) SLHostsExtend;
  	WriteSwappedDataToClient(client, len, pdata);
      }
      xfree(pdata);
      return (client->noClientException);
  }
  
  int
  ProcChangeAccessControl(register ClientPtr client)
  {
      int result;
      REQUEST(xSetAccessControlReq);
  
      REQUEST_SIZE_MATCH(xSetAccessControlReq);
      if ((stuff->mode != EnableAccess) && (stuff->mode != DisableAccess))
      {
  	client->errorValue = stuff->mode;
          return BadValue;
      }
      result = ChangeAccessControl(client, stuff->mode == EnableAccess);
      if (!result)
  	result = client->noClientException;
      return (result);
  }
  
  int
  ProcKillClient(register ClientPtr client)
  {
      REQUEST(xResourceReq);
      ClientPtr	killclient;
  
      REQUEST_SIZE_MATCH(xResourceReq);
      if (stuff->id == AllTemporary)
      {
  	CloseDownRetainedResources();
          return (client->noClientException);
      }
  
      if ((killclient = LookupClient(stuff->id, client)))
      {
  	CloseDownClient(killclient);
  	/* if an LBX proxy gets killed, isItTimeToYield will be set */
  	if (isItTimeToYield || (client == killclient))
  	{
  	    /* force yield and return Success, so that Dispatch()
  	     * doesn't try to touch client
  	     */
  	    isItTimeToYield = TRUE;
  	    return (Success);
  	}
  	return (client->noClientException);
      }
      else
      {
  	client->errorValue = stuff->id;
  	return (BadValue);
      }
  }
  
  int
  ProcSetFontPath(register ClientPtr client)
  {
      unsigned char *ptr;
      unsigned long nbytes, total;
      long nfonts;
      int n, result;
      int error;
      REQUEST(xSetFontPathReq);
      
      REQUEST_AT_LEAST_SIZE(xSetFontPathReq);
      
      nbytes = (client->req_len << 2) - sizeof(xSetFontPathReq);
      total = nbytes;
      ptr = (unsigned char *)&stuff[1];
      nfonts = stuff->nFonts;
      while (--nfonts >= 0)
      {
  	if ((total == 0) || (total < (n = (*ptr + 1))))
  	    return(BadLength);
  	total -= n;
  	ptr += n;
      }
      if (total >= 4)
  	return(BadLength);
      result = SetFontPath(client, stuff->nFonts, (unsigned char *)&stuff[1],
  			 &error);
      if (!result)
      {
  	result = client->noClientException;
  	client->errorValue = error;
      }
      return (result);
  }
  
  int
  ProcGetFontPath(register ClientPtr client)
  {
      xGetFontPathReply reply;
      int stringLens, numpaths;
      unsigned char *bufferStart;
      /* REQUEST (xReq); */
  
      REQUEST_SIZE_MATCH(xReq);
      bufferStart = GetFontPath(&numpaths, &stringLens);
  
      reply.type = X_Reply;
      reply.sequenceNumber = client->sequence;
      reply.length = (stringLens + numpaths + 3) >> 2;
      reply.nPaths = numpaths;
  
      WriteReplyToClient(client, sizeof(xGetFontPathReply), &reply);
      if (stringLens || numpaths)
  	(void)WriteToClient(client, stringLens + numpaths, (char *)bufferStart);
      return(client->noClientException);
  }
  
  int
  ProcChangeCloseDownMode(register ClientPtr client)
  {
      REQUEST(xSetCloseDownModeReq);
  
      REQUEST_SIZE_MATCH(xSetCloseDownModeReq);
      if ((stuff->mode == AllTemporary) ||
  	(stuff->mode == RetainPermanent) ||
  	(stuff->mode == RetainTemporary))
      {
  	client->closeDownMode = stuff->mode;
  	return (client->noClientException);
      }
      else   
      {
  	client->errorValue = stuff->mode;
  	return (BadValue);
      }
  }
  
  int ProcForceScreenSaver(register ClientPtr client)
  {    
      REQUEST(xForceScreenSaverReq);
  
      REQUEST_SIZE_MATCH(xForceScreenSaverReq);
      
      if ((stuff->mode != ScreenSaverReset) && 
  	(stuff->mode != ScreenSaverActive))
      {
  	client->errorValue = stuff->mode;
          return BadValue;
      }
      SaveScreens(SCREEN_SAVER_FORCER, (int)stuff->mode);
      return client->noClientException;
  }
  
  int ProcNoOperation(register ClientPtr client)
  {
      REQUEST_AT_LEAST_SIZE(xReq);
      
      /* noop -- don't do anything */
      return(client->noClientException);
  }
  
  void
  InitProcVectors(void)
  {
      int i;
      for (i = 0; i<256; i++)
      {
  	if(!ProcVector[i])
  	{
              ProcVector[i] = SwappedProcVector[i] = ProcBadRequest;
  	    ReplySwapVector[i] = ReplyNotSwappd;
  	}
  #ifdef K5AUTH
  	if (!k5_Vector[i])
  	{
  	    k5_Vector[i] = k5_bad;
  	}
  #endif
      }
      for(i = LASTEvent; i < 128; i++)
      {
  	EventSwapVector[i] = NotImplemented;
      }
      
  }
  
  /**********************
   * CloseDownClient
   *
   *  Client can either mark his resources destroy or retain.  If retained and
   *  then killed again, the client is really destroyed.
   *********************/
  
  char dispatchExceptionAtReset = DE_RESET;
  
  void
  CloseDownClient(register ClientPtr client)
  {
      Bool really_close_down = client->clientGone ||
  			     client->closeDownMode == DestroyAll;
  
      if (!client->clientGone)
      {
  	/* ungrab server if grabbing client dies */
  	if (grabState != GrabNone && grabClient == client)
  	{
  	    UngrabServer(client);
  	}
  	BITCLEAR(grabWaiters, client->index);
  	DeleteClientFromAnySelections(client);
  	ReleaseActiveGrabs(client);
  	DeleteClientFontStuff(client);
  	if (!really_close_down)
  	{
  	    /*  This frees resources that should never be retained
  	     *  no matter what the close down mode is.  Actually we
  	     *  could do this unconditionally, but it's probably
  	     *  better not to traverse all the client's resources
  	     *  twice (once here, once a few lines down in
  	     *  FreeClientResources) in the common case of
  	     *  really_close_down == TRUE.
  	     */
  	    FreeClientNeverRetainResources(client);
  	    client->clientState = ClientStateRetained;
    	    if (ClientStateCallback)
              {
  		NewClientInfoRec clientinfo;
  
  		clientinfo.client = client; 
  		clientinfo.prefix = (xConnSetupPrefix *)NULL;  
  		clientinfo.setup = (xConnSetup *) NULL;
  		CallCallbacks((&ClientStateCallback), (pointer)&clientinfo);
              } 
  	}
  	client->clientGone = TRUE;  /* so events aren't sent to client */
  	if (ClientIsAsleep(client))
  	    ClientSignal (client);
  	ProcessWorkQueueZombies();
  	CloseDownConnection(client);
  
  	/* If the client made it to the Running stage, nClients has
  	 * been incremented on its behalf, so we need to decrement it
  	 * now.  If it hasn't gotten to Running, nClients has *not*
  	 * been incremented, so *don't* decrement it.
  	 */
  	if (client->clientState != ClientStateInitial &&
  	    client->clientState != ClientStateAuthenticating )
  	{
  	    --nClients;
  	}
      }
  
      if (really_close_down)
      {
  	if (client->clientState == ClientStateRunning && nClients == 0)
  	    dispatchException |= dispatchExceptionAtReset;
  
  	client->clientState = ClientStateGone;
  	if (ClientStateCallback)
  	{
  	    NewClientInfoRec clientinfo;
  
  	    clientinfo.client = client; 
  	    clientinfo.prefix = (xConnSetupPrefix *)NULL;  
  	    clientinfo.setup = (xConnSetup *) NULL;
  	    CallCallbacks((&ClientStateCallback), (pointer)&clientinfo);
  	} 	    
  	FreeClientResources(client);
  	if (client->index < nextFreeClientID)
  	    nextFreeClientID = client->index;
  	clients[client->index] = NullClient;
  #ifdef SMART_SCHEDULE
  	SmartLastClient = NullClient;
  #endif
  	xfree(client);
  
  	while (!clients[currentMaxClients-1])
  	    currentMaxClients--;
      }
  }
  
  static void
  KillAllClients()
  {
      int i;
      for (i=1; i<currentMaxClients; i++)
          if (clients[i]) {
              /* Make sure Retained clients are released. */
              clients[i]->closeDownMode = DestroyAll;
              CloseDownClient(clients[i]);     
          }
  }
  
  /*********************
   * CloseDownRetainedResources
   *
   *    Find all clients that are gone and have terminated in RetainTemporary 
   *    and  destroy their resources.
   *********************/
  
  void
  CloseDownRetainedResources()
  {
      register int i;
      register ClientPtr client;
  
      for (i=1; i<currentMaxClients; i++)
      {
          client = clients[i];
          if (client && (client->closeDownMode == RetainTemporary)
  	    && (client->clientGone))
  	    CloseDownClient(client);
      }
  }
  
  extern int clientPrivateLen;
  extern unsigned *clientPrivateSizes;
  extern unsigned totalClientSize;
  
  void InitClient(ClientPtr client, int i, pointer ospriv)
  {
      client->index = i;
      client->sequence = 0; 
      client->clientAsMask = ((Mask)i) << CLIENTOFFSET;
      client->clientGone = FALSE;
      if (i)
      {
  	client->closeDownMode = DestroyAll;
  	client->lastDrawable = (DrawablePtr)WindowTable[0];
  	client->lastDrawableID = WindowTable[0]->drawable.id;
      }
      else
      {
  	client->closeDownMode = RetainPermanent;
  	client->lastDrawable = (DrawablePtr)NULL;
  	client->lastDrawableID = INVALID;
      }
      client->lastGC = (GCPtr) NULL;
      client->lastGCID = INVALID;
      client->numSaved = 0;
      client->saveSet = (SaveSetElt *)NULL;
      client->noClientException = Success;
  #ifdef DEBUG
      client->requestLogIndex = 0;
  #endif
      client->requestVector = InitialVector;
      client->osPrivate = ospriv;
      client->swapped = FALSE;
      client->big_requests = FALSE;
      client->priority = 0;
      client->clientState = ClientStateInitial;
  #ifdef XKB
      if (!noXkbExtension) {
  	client->xkbClientFlags = 0;
  	client->mapNotifyMask = 0;
  	QueryMinMaxKeyCodes(&client->minKC,&client->maxKC);
      }
  #endif
      client->replyBytesRemaining = 0;
  #ifdef XAPPGROUP
      client->appgroup = NULL;
  #endif
      client->fontResFunc = NULL;
  #ifdef SMART_SCHEDULE
      client->smart_priority = 0;
      client->smart_start_tick = SmartScheduleTime;
      client->smart_stop_tick = SmartScheduleTime;
      client->smart_check_tick = SmartScheduleTime;
  #endif
  }
  
  int
  InitClientPrivates(ClientPtr client)
  {
      register char *ptr;
      DevUnion *ppriv;
      register unsigned *sizes;
      register unsigned size;
      register int i;
  
      if (totalClientSize == sizeof(ClientRec))
  	ppriv = (DevUnion *)NULL;
      else if (client->index)
  	ppriv = (DevUnion *)(client + 1);
      else
      {
  	ppriv = (DevUnion *)xalloc(totalClientSize - sizeof(ClientRec));
  	if (!ppriv)
  	    return 0;
      }
      client->devPrivates = ppriv;
      sizes = clientPrivateSizes;
      ptr = (char *)(ppriv + clientPrivateLen);
      for (i = clientPrivateLen; --i >= 0; ppriv++, sizes++)
      {
  	if ( (size = *sizes) )
  	{
  	    ppriv->ptr = (pointer)ptr;
  	    ptr += size;
  	}
  	else
  	    ppriv->ptr = (pointer)NULL;
      }
  
      /* Allow registrants to initialize the serverClient devPrivates */
      if (!client->index && ClientStateCallback)
      {
  	NewClientInfoRec clientinfo;
  
  	clientinfo.client = client; 
  	clientinfo.prefix = (xConnSetupPrefix *)NULL;  
  	clientinfo.setup = (xConnSetup *) NULL;
  	CallCallbacks((&ClientStateCallback), (pointer)&clientinfo);
      } 
      return 1;
  }
  
  /************************
   * int NextAvailableClient(ospriv)
   *
   * OS dependent portion can't assign client id's because of CloseDownModes.
   * Returns NULL if there are no free clients.
   *************************/
  
  ClientPtr NextAvailableClient(pointer ospriv)
  {
      register int i;
      register ClientPtr client;
      xReq data;
  
      i = nextFreeClientID;
      if (i == MAXCLIENTS)
  	return (ClientPtr)NULL;
      clients[i] = client = (ClientPtr)xalloc(totalClientSize);
      if (!client)
  	return (ClientPtr)NULL;
      InitClient(client, i, ospriv);
      InitClientPrivates(client);
      if (!InitClientResources(client))
      {
  	xfree(client);
  	return (ClientPtr)NULL;
      }
      data.reqType = 1;
      data.length = (sz_xReq + sz_xConnClientPrefix) >> 2;
      if (!InsertFakeRequest(client, (char *)&data, sz_xReq))
      {
  	FreeClientResources(client);
  	xfree(client);
  	return (ClientPtr)NULL;
      }
      if (i == currentMaxClients)
  	currentMaxClients++;
      while ((nextFreeClientID < MAXCLIENTS) && clients[nextFreeClientID])
  	nextFreeClientID++;
      if (ClientStateCallback)
      {
  	NewClientInfoRec clientinfo;
  
          clientinfo.client = client; 
          clientinfo.prefix = (xConnSetupPrefix *)NULL;  
          clientinfo.setup = (xConnSetup *) NULL;
  	CallCallbacks((&ClientStateCallback), (pointer)&clientinfo);
      } 	
      return(client);
  }
  
  int
  ProcInitialConnection(register ClientPtr client)
  {
      REQUEST(xReq);
      register xConnClientPrefix *prefix;
      int whichbyte = 1;
  
      prefix = (xConnClientPrefix *)((char *)stuff + sz_xReq);
      if ((prefix->byteOrder != 'l') && (prefix->byteOrder != 'B'))
  	return (client->noClientException = -1);
      if (((*(char *) &whichbyte) && (prefix->byteOrder == 'B')) ||
  	(!(*(char *) &whichbyte) && (prefix->byteOrder == 'l')))
      {
  	client->swapped = TRUE;
  	SwapConnClientPrefix(prefix);
      }
      stuff->reqType = 2;
      stuff->length += ((prefix->nbytesAuthProto + (unsigned)3) >> 2) +
  		     ((prefix->nbytesAuthString + (unsigned)3) >> 2);
      if (client->swapped)
      {
  	swaps(&stuff->length, whichbyte);
      }
      ResetCurrentRequest(client);
      return (client->noClientException);
  }
  
  int
  SendConnSetup(register ClientPtr client, char *reason)
  {
      register xWindowRoot *root;
      register int i;
      int numScreens;
      char* lConnectionInfo;
      xConnSetupPrefix* lconnSetupPrefix;
  
      if (reason)
      {
  	xConnSetupPrefix csp;
  
  	csp.success = xFalse;
  	csp.lengthReason = strlen(reason);
  	csp.length = (csp.lengthReason + (unsigned)3) >> 2;
  	csp.majorVersion = X_PROTOCOL;
  	csp.minorVersion = X_PROTOCOL_REVISION;
  	if (client->swapped)
  	    WriteSConnSetupPrefix(client, &csp);
  	else
  	    (void)WriteToClient(client, sz_xConnSetupPrefix, (char *) &csp);
          (void)WriteToClient(client, (int)csp.lengthReason, reason);
  	return (client->noClientException = -1);
      }
  
      numScreens = screenInfo.numScreens;
      lConnectionInfo = ConnectionInfo;
      lconnSetupPrefix = &connSetupPrefix;
  
      /* We're about to start speaking X protocol back to the client by
       * sending the connection setup info.  This means the authorization
       * step is complete, and we can count the client as an
       * authorized one.
       */
      nClients++;
  
      client->requestVector = client->swapped ? SwappedProcVector : ProcVector;
      client->sequence = 0;
  #ifdef XAPPGROUP
      XagConnectionInfo (client, &lconnSetupPrefix, &lConnectionInfo, &numScreens);
  #endif
      ((xConnSetup *)lConnectionInfo)->ridBase = client->clientAsMask;
      ((xConnSetup *)lConnectionInfo)->ridMask = RESOURCE_ID_MASK;
  #ifdef MATCH_CLIENT_ENDIAN
      ((xConnSetup *)lConnectionInfo)->imageByteOrder = ClientOrder (client);
      ((xConnSetup *)lConnectionInfo)->bitmapBitOrder = ClientOrder (client);
  #endif
      /* fill in the "currentInputMask" */
      root = (xWindowRoot *)(lConnectionInfo + connBlockScreenStart);
  #ifdef PANORAMIX
      if (noPanoramiXExtension)
  	numScreens = screenInfo.numScreens;
      else 
          numScreens = ((xConnSetup *)ConnectionInfo)->numRoots;
  #endif
  
      for (i=0; i<numScreens; i++) 
      {
  	register unsigned int j;
  	register xDepth *pDepth;
  
          root->currentInputMask = WindowTable[i]->eventMask |
  			         wOtherEventMasks (WindowTable[i]);
  	pDepth = (xDepth *)(root + 1);
  	for (j = 0; j < root->nDepths; j++)
  	{
  	    pDepth = (xDepth *)(((char *)(pDepth + 1)) +
  				pDepth->nVisuals * sizeof(xVisualType));
  	}
  	root = (xWindowRoot *)pDepth;
      }
  
      if (client->swapped)
      {
  	WriteSConnSetupPrefix(client, lconnSetupPrefix);
  	WriteSConnectionInfo(client,
  			     (unsigned long)(lconnSetupPrefix->length << 2),
  			     lConnectionInfo);
      }
      else
      {
  	(void)WriteToClient(client, sizeof(xConnSetupPrefix),
  			    (char *) lconnSetupPrefix);
  	(void)WriteToClient(client, (int)(lconnSetupPrefix->length << 2),
  			    lConnectionInfo);
      }
      client->clientState = ClientStateRunning;
      if (ClientStateCallback)
      {
  	NewClientInfoRec clientinfo;
  
          clientinfo.client = client; 
          clientinfo.prefix = lconnSetupPrefix;  
          clientinfo.setup = (xConnSetup *)lConnectionInfo;
  	CallCallbacks((&ClientStateCallback), (pointer)&clientinfo);
      } 	
      return (client->noClientException);
  }
  
  int
  ProcEstablishConnection(register ClientPtr client)
  {
      char *reason, *auth_proto, *auth_string;
      register xConnClientPrefix *prefix;
      REQUEST(xReq);
  
      prefix = (xConnClientPrefix *)((char *)stuff + sz_xReq);
      auth_proto = (char *)prefix + sz_xConnClientPrefix;
      auth_string = auth_proto + ((prefix->nbytesAuthProto + 3) & ~3);
      if ((prefix->majorVersion != X_PROTOCOL) ||
  	(prefix->minorVersion != X_PROTOCOL_REVISION))
  	reason = "Protocol version mismatch";
      else
  	reason = ClientAuthorized(client,
  				  (unsigned short)prefix->nbytesAuthProto,
  				  auth_proto,
  				  (unsigned short)prefix->nbytesAuthString,
  				  auth_string);
      /*
       * If Kerberos is being used for this client, the clientState
       * will be set to ClientStateAuthenticating at this point.
       * More messages need to be exchanged among the X server, Kerberos
       * server, and client to figure out if everyone is authorized.
       * So we don't want to send the connection setup info yet, since
       * the auth step isn't really done.
       */
      if (client->clientState == ClientStateCheckingSecurity)
  	client->clientState = ClientStateCheckedSecurity;
      else if (client->clientState != ClientStateAuthenticating)
  	return(SendConnSetup(client, reason));
      return(client->noClientException);
  }
  
  _X_EXPORT void
  SendErrorToClient(ClientPtr client, unsigned majorCode, unsigned minorCode, 
                    XID resId, int errorCode)
  {
      xError rep;
  
      rep.type = X_Error;
      rep.sequenceNumber = client->sequence;
      rep.errorCode = errorCode;
      rep.majorCode = majorCode;
      rep.minorCode = minorCode;
      rep.resourceID = resId;
  
      WriteEventsToClient (client, 1, (xEvent *)&rep);
  }
  
  void
  DeleteWindowFromAnySelections(WindowPtr pWin)
  {
      register int i;
  
      for (i = 0; i< NumCurrentSelections; i++)
          if (CurrentSelections[i].pWin == pWin)
          {
  	    if (SelectionCallback)
  	    {
  	        SelectionInfoRec    info;
  
  		info.selection = &CurrentSelections[i];
  		info.kind = SelectionWindowDestroy;
  		CallCallbacks(&SelectionCallback, &info);
  	    }
              CurrentSelections[i].pWin = (WindowPtr)NULL;
              CurrentSelections[i].window = None;
  	    CurrentSelections[i].client = NullClient;
  	}
  }
  
  static void
  DeleteClientFromAnySelections(ClientPtr client)
  {
      register int i;
  
      for (i = 0; i< NumCurrentSelections; i++)
          if (CurrentSelections[i].client == client)
          {
  	    if (SelectionCallback)
  	    {
  	        SelectionInfoRec    info;
  
  		info.selection = &CurrentSelections[i];
  		info.kind = SelectionWindowDestroy;
  		CallCallbacks(&SelectionCallback, &info);
  	    }
              CurrentSelections[i].pWin = (WindowPtr)NULL;
              CurrentSelections[i].window = None;
  	    CurrentSelections[i].client = NullClient;
  	}
  }
  
  void
  MarkClientException(ClientPtr client)
  {
      client->noClientException = -1;
  }