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diff --git a/nx-X11/programs/Xserver/hw/nxagent/NXresource.c b/nx-X11/programs/Xserver/hw/nxagent/NXresource.c
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+/**************************************************************************/
+/* */
+/* Copyright (c) 2001, 2011 NoMachine (http://www.nomachine.com) */
+/* Copyright (c) 2008-2014 Oleksandr Shneyder <o.shneyder@phoca-gmbh.de> */
+/* Copyright (c) 2011-2016 Mike Gabriel <mike.gabriel@das-netzwerkteam.de>*/
+/* Copyright (c) 2014-2016 Mihai Moldovan <ionic@ionic.de> */
+/* Copyright (c) 2014-2016 Ulrich Sibiller <uli42@gmx.de> */
+/* Copyright (c) 2015-2016 Qindel Group (http://www.qindel.com) */
+/* */
+/* NXAGENT, NX protocol compression and NX extensions to this software */
+/* are copyright of the aforementioned persons and companies. */
+/* */
+/* Redistribution and use of the present software is allowed according */
+/* to terms specified in the file LICENSE which comes in the source */
+/* distribution. */
+/* */
+/* All rights reserved. */
+/* */
+/* NOTE: This software has received contributions from various other */
+/* contributors, only the core maintainers and supporters are listed as */
+/* copyright holders. Please contact us, if you feel you should be listed */
+/* as copyright holder, as well. */
+/* */
+/**************************************************************************/
+
+/************************************************************
+
+Copyright 1987, 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 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.
+
+******************************************************************/
+
+/* $TOG: resource.c /main/41 1998/02/09 14:20:31 kaleb $ */
+
+/* Routines to manage various kinds of resources:
+ *
+ * CreateNewResourceType, CreateNewResourceClass, InitClientResources,
+ * FakeClientID, AddResource, FreeResource, FreeClientResources,
+ * FreeAllResources, LookupIDByType, LookupIDByClass, GetXIDRange
+ */
+
+/*
+ * A resource ID is a 32 bit quantity, the upper 2 bits of which are
+ * off-limits for client-visible resources. The next 8 bits are
+ * used as client ID, and the low 22 bits come from the client.
+ * A resource ID is "hashed" by extracting and xoring subfields
+ * (varying with the size of the hash table).
+ *
+ * It is sometimes necessary for the server to create an ID that looks
+ * like it belongs to a client. This ID, however, must not be one
+ * the client actually can create, or we have the potential for conflict.
+ * The 31st bit of the ID is reserved for the server's use for this
+ * purpose. By setting CLIENT_ID(id) to the client, the SERVER_BIT to
+ * 1, and an otherwise arbitrary ID in the low 22 bits, we can create a
+ * resource "owned" by the client.
+ */
+
+#include "../../dix/resource.c"
+
+#include "Agent.h"
+#include "Font.h"
+#include "Pixmaps.h"
+#include "GCs.h"
+
+#define PANIC
+#define WARNING
+#undef TEST
+#undef DEBUG
+
+#ifdef NXAGENT_SERVER
+static int nxagentResChangedFlag = 0;
+#endif
+
+#ifdef NXAGENT_SERVER
+int nxagentFindClientResource(int client, RESTYPE type, void * value)
+{
+ ResourcePtr pResource;
+ ResourcePtr *resources;
+
+ int i;
+
+ for (i = 0; i < clientTable[client].buckets; i++)
+ {
+ resources = clientTable[client].resources;
+
+ for (pResource = resources[i]; pResource; pResource = pResource -> next)
+ {
+ if (pResource -> type == type && pResource -> value == value)
+ {
+ #ifdef TEST
+ fprintf(stderr, "nxagentFindClientResource: Found resource [%p] type [%lu] "
+ "for client [%d].\n", (void *) value,
+ pResource -> type, client);
+ #endif
+
+ return 1;
+ }
+ }
+ }
+
+ return 0;
+}
+
+int nxagentSwitchResourceType(int client, RESTYPE type, void * value)
+{
+ ResourcePtr pResource;
+ ResourcePtr *resources;
+
+ RESTYPE internalType = 0;
+
+ int i;
+
+ if (type == RT_PIXMAP)
+ {
+ internalType = RT_NX_PIXMAP;
+ }
+ else if (type == RT_GC)
+ {
+ internalType = RT_NX_GC;
+ }
+ else if (type == RT_FONT)
+ {
+ internalType = RT_NX_FONT;
+ }
+ else
+ {
+ return 0;
+ }
+
+ if (client == serverClient -> index)
+ {
+ #ifdef TEST
+ fprintf(stderr, "nxagentSwitchResourceType: Requesting client is [%d]. Skipping the resource switch.\n",
+ client);
+ #endif
+
+ return 0;
+ }
+
+ for (i = 0; i < clientTable[serverClient -> index].buckets; i++)
+ {
+ resources = clientTable[serverClient -> index].resources;
+
+ for (pResource = resources[i]; pResource; pResource = pResource -> next)
+ {
+ if (pResource -> type == internalType &&
+ pResource -> value == value)
+ {
+ #ifdef TEST
+ fprintf(stderr, "nxagentSwitchResourceType: Changing resource [%p] type from [%lu] to "
+ "[%lu] for server client [%d].\n", (void *) value,
+ (unsigned long) pResource -> type, (unsigned long) type, serverClient -> index);
+ #endif
+
+ FreeResource(pResource -> id, RT_NONE);
+
+ return 1;
+ }
+ }
+ }
+
+ return 0;
+}
+#endif /* NXAGENT_SERVER */
+
+Bool
+AddResource(XID id, RESTYPE type, void * value)
+{
+ int client;
+ register ClientResourceRec *rrec;
+ register ResourcePtr res, *head;
+
+ client = CLIENT_ID(id);
+ rrec = &clientTable[client];
+ if (!rrec->buckets)
+ {
+ ErrorF("AddResource(%lx, %lx, %lx), client=%d \n",
+ (unsigned long)id, type, (unsigned long)value, client);
+ FatalError("client not in use\n");
+ }
+
+#ifdef NXAGENT_SERVER
+
+ nxagentSwitchResourceType(client, type, value);
+
+ #ifdef TEST
+ fprintf(stderr, "AddResource: Adding resource for client [%d] type [%lu] value [%p] id [%lu].\n",
+ client, (unsigned long) type, (void *) value, (unsigned long) id);
+ #endif
+
+#endif
+
+ if ((rrec->elements >= 4*rrec->buckets) &&
+ (rrec->hashsize < MAXHASHSIZE))
+ RebuildTable(client);
+ head = &rrec->resources[Hash(client, id)];
+ res = (ResourcePtr)malloc(sizeof(ResourceRec));
+ if (!res)
+ {
+ (*DeleteFuncs[type & TypeMask])(value, id);
+ return FALSE;
+ }
+ res->next = *head;
+ res->id = id;
+ res->type = type;
+ res->value = value;
+ *head = res;
+ rrec->elements++;
+ #ifdef NXAGENT_SERVER
+ nxagentResChangedFlag = 1;
+ #endif
+ if (!(id & SERVER_BIT) && (id >= rrec->expectID))
+ rrec->expectID = id + 1;
+ return TRUE;
+}
+
+void
+FreeResource(XID id, RESTYPE skipDeleteFuncType)
+{
+ int cid;
+ register ResourcePtr res;
+ register ResourcePtr *prev, *head;
+ register int *eltptr;
+ int elements;
+ Bool gotOne = FALSE;
+
+#ifdef NXAGENT_SERVER
+
+ #ifdef TEST
+ fprintf(stderr, "FreeResource: Freeing resource id [%lu].\n", (unsigned long) id);
+ #endif
+
+#endif
+
+ if (((cid = CLIENT_ID(id)) < MAXCLIENTS) && clientTable[cid].buckets)
+ {
+ head = &clientTable[cid].resources[Hash(cid, id)];
+ eltptr = &clientTable[cid].elements;
+
+ prev = head;
+ while ( (res = *prev) )
+ {
+ if (res->id == id)
+ {
+ RESTYPE rtype = res->type;
+ *prev = res->next;
+ elements = --*eltptr;
+ #ifdef NXAGENT_SERVER
+ nxagentResChangedFlag = 1;
+ #endif
+ if (rtype != skipDeleteFuncType)
+ (*DeleteFuncs[rtype & TypeMask])(res->value, res->id);
+ free(res);
+ if (*eltptr != elements)
+ prev = head; /* prev may no longer be valid */
+ gotOne = TRUE;
+ }
+ else
+ prev = &res->next;
+ }
+ }
+ if (!gotOne)
+ ErrorF("Freeing resource id=%lX which isn't there.\n",
+ (unsigned long)id);
+}
+
+
+void
+FreeResourceByType(XID id, RESTYPE type, Bool skipFree)
+{
+ int cid;
+ register ResourcePtr res;
+ register ResourcePtr *prev, *head;
+ if (((cid = CLIENT_ID(id)) < MAXCLIENTS) && clientTable[cid].buckets)
+ {
+ head = &clientTable[cid].resources[Hash(cid, id)];
+
+ prev = head;
+ while ( (res = *prev) )
+ {
+ if (res->id == id && res->type == type)
+ {
+ *prev = res->next;
+ #ifdef NXAGENT_SERVER
+ nxagentResChangedFlag = 1;
+ #endif
+ if (!skipFree)
+ (*DeleteFuncs[type & TypeMask])(res->value, res->id);
+ free(res);
+ break;
+ }
+ else
+ prev = &res->next;
+ }
+ }
+}
+
+/* Note: if func adds or deletes resources, then func can get called
+ * more than once for some resources. If func adds new resources,
+ * func might or might not get called for them. func cannot both
+ * add and delete an equal number of resources!
+ */
+
+void
+FindClientResourcesByType(
+ ClientPtr client,
+ RESTYPE type,
+ FindResType func,
+ void * cdata
+){
+ register ResourcePtr *resources;
+ register ResourcePtr this, next;
+ int i, elements;
+ register int *eltptr;
+
+ #ifdef NXAGENT_SERVER
+ register ResourcePtr **resptr;
+ #endif
+
+ if (!client)
+ client = serverClient;
+
+/*
+ * If func triggers a resource table
+ * rebuild then restart the loop.
+ */
+
+#ifdef NXAGENT_SERVER
+RestartLoop:
+#endif
+
+ resources = clientTable[client->index].resources;
+
+ #ifdef NXAGENT_SERVER
+ resptr = &clientTable[client->index].resources;
+ #endif
+
+ eltptr = &clientTable[client->index].elements;
+ for (i = 0; i < clientTable[client->index].buckets; i++)
+ {
+ for (this = resources[i]; this; this = next)
+ {
+ next = this->next;
+ if (!type || this->type == type) {
+ elements = *eltptr;
+
+ /*
+ * FIXME:
+ * It is not safe to let a function change the resource
+ * table we are reading!
+ */
+
+ #ifdef NXAGENT_SERVER
+ nxagentResChangedFlag = 0;
+ #endif
+ (*func)(this->value, this->id, cdata);
+
+ /*
+ * Avoid that a call to RebuildTable() could invalidate the
+ * pointer. This is safe enough, because in RebuildTable()
+ * the new pointer is allocated just before the old one is
+ * freed, so it can't point to the same address.
+ */
+
+ #ifdef NXAGENT_SERVER
+ if (*resptr != resources)
+ goto RestartLoop;
+ #endif
+
+ /*
+ * It's not enough to check if the number of elements has
+ * changed, beacause it could happen that the number of
+ * resources that have been added matches the number of
+ * the freed ones.
+ * 'nxagentResChangedFlag' is set if a resource has been
+ * added or freed.
+ */
+
+ #ifdef NXAGENT_SERVER
+ if (*eltptr != elements || nxagentResChangedFlag)
+ #else
+ if (*eltptr != elements)
+ #endif
+ next = resources[i]; /* start over */
+ }
+ }
+ }
+}
+
+void
+FindAllClientResources(
+ ClientPtr client,
+ FindAllRes func,
+ void * cdata
+){
+ register ResourcePtr *resources;
+ register ResourcePtr this, next;
+ int i, elements;
+ register int *eltptr;
+
+ #ifdef NXAGENT_SERVER
+ register ResourcePtr **resptr;
+ #endif
+
+ if (!client)
+ client = serverClient;
+
+/*
+ * If func triggers a resource table
+ * rebuild then restart the loop.
+ */
+
+#ifdef NXAGENT_SERVER
+RestartLoop:
+#endif
+
+ resources = clientTable[client->index].resources;
+
+ #ifdef NXAGENT_SERVER
+ resptr = &clientTable[client->index].resources;
+ #endif
+
+ eltptr = &clientTable[client->index].elements;
+ for (i = 0; i < clientTable[client->index].buckets; i++)
+ {
+ for (this = resources[i]; this; this = next)
+ {
+ next = this->next;
+ elements = *eltptr;
+
+ /*
+ * FIXME:
+ * It is not safe to let a function change the resource
+ * table we are reading!
+ */
+
+ #ifdef NXAGENT_SERVER
+ nxagentResChangedFlag = 0;
+ #endif
+ (*func)(this->value, this->id, this->type, cdata);
+
+ /*
+ * Avoid that a call to RebuildTable() could invalidate the
+ * pointer. This is safe enough, because in RebuildTable()
+ * the new pointer is allocated just before the old one is
+ * freed, so it can't point to the same address.
+ */
+
+ #ifdef NXAGENT_SERVER
+ if (*resptr != resources)
+ goto RestartLoop;
+ #endif
+
+ /*
+ * It's not enough to check if the number of elements has
+ * changed, beacause it could happen that the number of
+ * resources that have been added matches the number of
+ * the freed ones.
+ * 'nxagentResChangedFlag' is set if a resource has been
+ * added or freed.
+ */
+
+ #ifdef NXAGENT_SERVER
+ if (*eltptr != elements || nxagentResChangedFlag)
+ #else
+ if (*eltptr != elements)
+ #endif
+ next = resources[i]; /* start over */
+ }
+ }
+}
+
+
+void *
+LookupClientResourceComplex(
+ ClientPtr client,
+ RESTYPE type,
+ FindComplexResType func,
+ void * cdata
+){
+ ResourcePtr *resources;
+ ResourcePtr this;
+ int i;
+
+ #ifdef NXAGENT_SERVER
+ ResourcePtr **resptr;
+ Bool res;
+ #endif
+
+ if (!client)
+ client = serverClient;
+
+/*
+ * If func triggers a resource table
+ * rebuild then restart the loop.
+ */
+
+#ifdef NXAGENT_SERVER
+RestartLoop:
+#endif
+
+ resources = clientTable[client->index].resources;
+
+ #ifdef NXAGENT_SERVER
+ resptr = &clientTable[client->index].resources;
+ #endif
+
+ for (i = 0; i < clientTable[client->index].buckets; i++) {
+ for (this = resources[i]; this; this = this->next) {
+ if (!type || this->type == type) {
+ #ifdef NXAGENT_SERVER
+ res = (*func)(this->value, this->id, cdata);
+
+ if (*resptr != resources)
+ goto RestartLoop;
+
+ if (res)
+ return this->value;
+ #else
+ if((*func)(this->value, this->id, cdata))
+ return this->value;
+ #endif
+ }
+ }
+ }
+ return NULL;
+}
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