dvander@370: /**
ds@653:  * vim: set ts=4 :
dvander@1231:  * ================================================================
dvander@1231:  * SourceMod
dvander@1231:  * Copyright (C) 2004-2007 AlliedModders LLC.  All rights reserved.
dvander@1231:  * ================================================================
dvander@370:  *
dvander@1231:  * This program is free software; you can redistribute it and/or 
dvander@1231:  * modify it under the terms of the GNU General Public License, 
dvander@1231:  * version 3.0, as published by the Free Software Foundation.
dvander@1231:  * 
dvander@1231:  * This program is distributed in the hope that it will be useful,
dvander@1231:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
dvander@1231:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
dvander@1231:  * GNU General Public License for more details.
dvander@1231:  *
dvander@1231:  * You should have received a copy of the GNU General Public License
dvander@1231:  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
dvander@1231:  *
dvander@1231:  * As a special exception, AlliedModders LLC gives you permission to 
dvander@1231:  * link the code of this program (as well as its derivative works) to 
dvander@1231:  * "Half-Life 2," the "Source Engine," the "SourcePawn JIT," and any 
dvander@1231:  * Game MODs that run on software by the Valve Corporation.  You must 
dvander@1231:  * obey the GNU General Public License in all respects for all other 
dvander@1231:  * code used. Additionally, AlliedModders LLC grants this exception 
dvander@1231:  * to all derivative works. AlliedModders LLC defines further 
dvander@1231:  * exceptions, found in LICENSE.txt (as of this writing, version 
dvander@1231:  * JULY-31-2007), 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: };