dvander@370: /**
ds@653:  * vim: set ts=4 :
ds@1330:  * =============================================================================
dvander@1231:  * SourceMod
dvander@1231:  * Copyright (C) 2004-2007 AlliedModders LLC.  All rights reserved.
ds@1330:  * =============================================================================
dvander@370:  *
ds@1330:  * This program is free software; you can redistribute it and/or modify it under
ds@1330:  * the terms of the GNU General Public License, version 3.0, as published by the
ds@1330:  * Free Software Foundation.
dvander@1231:  * 
ds@1330:  * This program is distributed in the hope that it will be useful, but WITHOUT
ds@1330:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
ds@1330:  * FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
ds@1330:  * details.
dvander@1231:  *
ds@1330:  * You should have received a copy of the GNU General Public License along with
ds@1330:  * this program.  If not, see <http://www.gnu.org/licenses/>.
dvander@1231:  *
ds@1330:  * As a special exception, AlliedModders LLC gives you permission to link the
ds@1330:  * code of this program (as well as its derivative works) to "Half-Life 2," the
ds@1330:  * "Source Engine," the "SourcePawn JIT," and any Game MODs that run on software
ds@1330:  * by the Valve Corporation.  You must obey the GNU General Public License in
ds@1330:  * all respects for all other code used.  Additionally, AlliedModders LLC grants
ds@1330:  * this exception to all derivative works.  AlliedModders LLC defines further
ds@1330:  * exceptions, found in LICENSE.txt (as of this writing, version JULY-31-2007),
ds@1330:  * or <http://www.sourcemod.net/license.php>.
dvander@370:  *
dvander@370:  * Version: $Id$
dvander@370:  */
dvander@370: 
dvander@247: #include "sm_globals.h"
dvander@247: #include "HandleSys.h"
dvander@247: #include "PluginSys.h"
dvander@247: 
dvander@247: static cell_t sm_IsValidHandle(IPluginContext *pContext, const cell_t *params)
dvander@247: {
dvander@247: 	Handle_t hndl = static_cast<Handle_t>(params[1]);
dvander@247: 
dvander@247: 	HandleError err = g_HandleSys.ReadHandle(hndl, 0, NULL, NULL);
dvander@247: 
dvander@247: 	if (err != HandleError_Access
dvander@247: 		&& err != HandleError_None)
dvander@247: 	{
dvander@247: 		return 0;
dvander@247: 	}
dvander@247: 
dvander@247: 	return 1;
dvander@247: }
dvander@247: 
dvander@247: static cell_t sm_CloseHandle(IPluginContext *pContext, const cell_t *params)
dvander@247: {
dvander@247: 	Handle_t hndl = static_cast<Handle_t>(params[1]);
dvander@262: 	HandleSecurity sec;
dvander@262: 
dvander@262: 	sec.pIdentity = NULL;
dvander@262: 	sec.pOwner = pContext->GetIdentity();
dvander@262: 
dvander@262: 	HandleError err = g_HandleSys.FreeHandle(hndl, &sec);
dvander@259:   
dvander@247: 	if (err == HandleError_None)
dvander@247: 	{
dvander@247: 		return 1;
dvander@247: 	} else if (err == HandleError_Access) {
dvander@247: 		return 0;
dvander@247: 	} else {
dvander@247: 		return pContext->ThrowNativeError("Handle %x is invalid (error %d)", hndl, err);
dvander@247: 	}
dvander@247: }
dvander@247: 
dvander@247: static cell_t sm_CloneHandle(IPluginContext *pContext, const cell_t *params)
dvander@247: {
dvander@247: 	Handle_t new_hndl;
dvander@247: 	Handle_t hndl = static_cast<Handle_t>(params[1]);
dvander@247: 	HandleError err;
dvander@265: 	IdentityToken_t *pNewOwner;
dvander@247: 	
dvander@247: 	if (params[2] == 0)
dvander@247: 	{
dvander@265: 		pNewOwner = pContext->GetIdentity();
dvander@247: 	} else {
dvander@247: 		Handle_t hPlugin = static_cast<Handle_t>(params[2]);
dvander@265: 		IPlugin *pPlugin = g_PluginSys.PluginFromHandle(hPlugin, &err);
dvander@247: 		if (!pPlugin)
dvander@247: 		{
dvander@247: 			return pContext->ThrowNativeError("Plugin handle %x is invalid (error %d)", hndl, err);
dvander@247: 		}
dvander@265: 		pNewOwner = pPlugin->GetIdentity();
dvander@247: 	}
dvander@247: 
dvander@265: 	err = g_HandleSys.CloneHandle(hndl, &new_hndl, pNewOwner, NULL);
dvander@247: 
dvander@247: 	if (err == HandleError_Access)
dvander@247: 	{
dvander@247: 		return 0;
dvander@247: 	} else if (err == HandleError_None) {
dvander@247: 		return new_hndl;
dvander@247: 	} else {
dvander@282: 		return pContext->ThrowNativeError("Handle %x cannot be cloned because it is invalid (error %d)", hndl, err);
dvander@247: 	}
dvander@247: }
dvander@247: 
dvander@536: static cell_t sm_GetMyHandle(IPluginContext *pContext, const cell_t *params)
dvander@536: {
dvander@536: 	CPlugin *pPlugin = g_PluginSys.GetPluginByCtx(pContext->GetContext());
dvander@536: 
dvander@536: 	return pPlugin->GetMyHandle();
dvander@536: }
dvander@536: 
dvander@247: REGISTER_NATIVES(handles)
dvander@247: {
dvander@247: 	{"IsValidHandle",			sm_IsValidHandle},
dvander@247: 	{"CloseHandle",				sm_CloseHandle},
dvander@247: 	{"CloneHandle",				sm_CloneHandle},
dvander@539: 	{"GetMyHandle",				sm_GetMyHandle},
dvander@252: 	{NULL,						NULL},
dvander@247: };