/**

 * ===============================================================

 * SourceMod (C)2004-2007 AlliedModders LLC.  All rights reserved.

 * ===============================================================

 *

 * This file is not open source and may not be copied without explicit

 * written permission of AlliedModders LLC.  This file may not be redistributed 

 * in whole or significant part.

 * For information, see LICENSE.txt or http://www.sourcemod.net/license.php

 *

 * Version: $Id$

 */

#include "sm_globals.h"

#include "HandleSys.h"

#include "PluginSys.h"

static cell_t sm_IsValidHandle(IPluginContext *pContext, const cell_t *params)

{

	Handle_t hndl = static_cast<Handle_t>(params[1]);

	HandleError err = g_HandleSys.ReadHandle(hndl, 0, NULL, NULL);

	if (err != HandleError_Access

		&& err != HandleError_None)

	{

		return 0;

	}

	return 1;

}

static cell_t sm_CloseHandle(IPluginContext *pContext, const cell_t *params)

{

	Handle_t hndl = static_cast<Handle_t>(params[1]);

	HandleSecurity sec;

	sec.pIdentity = NULL;

	sec.pOwner = pContext->GetIdentity();

	HandleError err = g_HandleSys.FreeHandle(hndl, &sec);

	if (err == HandleError_None)

	{

		return 1;

	} else if (err == HandleError_Access) {

		return 0;

	} else {

		return pContext->ThrowNativeError("Handle %x is invalid (error %d)", hndl, err);

	}

}

static cell_t sm_CloneHandle(IPluginContext *pContext, const cell_t *params)

{

	Handle_t new_hndl;

	Handle_t hndl = static_cast<Handle_t>(params[1]);

	HandleError err;

	IdentityToken_t *pNewOwner;

	if (params[2] == 0)

	{

		pNewOwner = pContext->GetIdentity();

	} else {

		Handle_t hPlugin = static_cast<Handle_t>(params[2]);

		IPlugin *pPlugin = g_PluginSys.PluginFromHandle(hPlugin, &err);

		if (!pPlugin)

		{

			return pContext->ThrowNativeError("Plugin handle %x is invalid (error %d)", hndl, err);

		}

		pNewOwner = pPlugin->GetIdentity();

	}

	err = g_HandleSys.CloneHandle(hndl, &new_hndl, pNewOwner, NULL);

	if (err == HandleError_Access)

	{

		return 0;

	} else if (err == HandleError_None) {

		return new_hndl;

	} else {

		return pContext->ThrowNativeError("Handle %x cannot be cloned because it is invalid (error %d)", hndl, err);

	}

}

static cell_t sm_GetMyHandle(IPluginContext *pContext, const cell_t *params)

{

	CPlugin *pPlugin = g_PluginSys.GetPluginByCtx(pContext->GetContext());

	return pPlugin->GetMyHandle();

}

REGISTER_NATIVES(handles)

{

	{"IsValidHandle",			sm_IsValidHandle},

	{"CloseHandle",				sm_CloseHandle},

	{"CloneHandle",				sm_CloneHandle},

	{"GetMyHandle",				sm_GetMyHandle},

	{NULL,						NULL},

};