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core/smn_handles.cpp
author Fyren <fyrenmoo@gmail.com>
Sun Mar 01 16:41:44 2009 -0500 (2009-03-01)
changeset 2637 ed7b03e3bf16
parent 2289 44045ead61cd
permissions -rw-r--r--
Added case insensitivity search to ReplaceString (bug 3639, r=dvander). 
     1 /**
     2  * vim: set ts=4 :
     3  * =============================================================================
     4  * SourceMod
     5  * Copyright (C) 2004-2008 AlliedModders LLC.  All rights reserved.
     6  * =============================================================================
     7  *
     8  * This program is free software; you can redistribute it and/or modify it under
     9  * the terms of the GNU General Public License, version 3.0, as published by the
    10  * Free Software Foundation.
    11  * 
    12  * This program is distributed in the hope that it will be useful, but WITHOUT
    13  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
    14  * FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
    15  * details.
    16  *
    17  * You should have received a copy of the GNU General Public License along with
    18  * this program.  If not, see <http://www.gnu.org/licenses/>.
    19  *
    20  * As a special exception, AlliedModders LLC gives you permission to link the
    21  * code of this program (as well as its derivative works) to "Half-Life 2," the
    22  * "Source Engine," the "SourcePawn JIT," and any Game MODs that run on software
    23  * by the Valve Corporation.  You must obey the GNU General Public License in
    24  * all respects for all other code used.  Additionally, AlliedModders LLC grants
    25  * this exception to all derivative works.  AlliedModders LLC defines further
    26  * exceptions, found in LICENSE.txt (as of this writing, version JULY-31-2007),
    27  * or <http://www.sourcemod.net/license.php>.
    28  *
    29  * Version: $Id$
    30  */
    31 
    32 #include "sm_globals.h"
    33 #include "HandleSys.h"
    34 #include "PluginSys.h"
    35 
    36 static cell_t sm_IsValidHandle(IPluginContext *pContext, const cell_t *params)
    37 {
    38 	Handle_t hndl = static_cast<Handle_t>(params[1]);
    39 
    40 	HandleError err = g_HandleSys.ReadHandle(hndl, 0, NULL, NULL);
    41 
    42 	if (err != HandleError_Access
    43 		&& err != HandleError_None)
    44 	{
    45 		return 0;
    46 	}
    47 
    48 	return 1;
    49 }
    50 
    51 static cell_t sm_CloseHandle(IPluginContext *pContext, const cell_t *params)
    52 {
    53 	Handle_t hndl = static_cast<Handle_t>(params[1]);
    54 	HandleSecurity sec;
    55 
    56 	sec.pIdentity = NULL;
    57 	sec.pOwner = pContext->GetIdentity();
    58 
    59 	HandleError err = g_HandleSys.FreeHandle(hndl, &sec);
    60   
    61 	if (err == HandleError_None)
    62 	{
    63 		return 1;
    64 	} else if (err == HandleError_Access) {
    65 		return 0;
    66 	} else {
    67 		return pContext->ThrowNativeError("Handle %x is invalid (error %d)", hndl, err);
    68 	}
    69 }
    70 
    71 static cell_t sm_CloneHandle(IPluginContext *pContext, const cell_t *params)
    72 {
    73 	Handle_t new_hndl;
    74 	Handle_t hndl = static_cast<Handle_t>(params[1]);
    75 	HandleError err;
    76 	IdentityToken_t *pNewOwner;
    77 	
    78 	if (params[2] == 0)
    79 	{
    80 		pNewOwner = pContext->GetIdentity();
    81 	} else {
    82 		Handle_t hPlugin = static_cast<Handle_t>(params[2]);
    83 		IPlugin *pPlugin = g_PluginSys.PluginFromHandle(hPlugin, &err);
    84 		if (!pPlugin)
    85 		{
    86 			return pContext->ThrowNativeError("Plugin handle %x is invalid (error %d)", hndl, err);
    87 		}
    88 		pNewOwner = pPlugin->GetIdentity();
    89 	}
    90 
    91 	err = g_HandleSys.CloneHandle(hndl, &new_hndl, pNewOwner, NULL);
    92 
    93 	if (err == HandleError_Access)
    94 	{
    95 		return 0;
    96 	} else if (err == HandleError_None) {
    97 		return new_hndl;
    98 	} else {
    99 		return pContext->ThrowNativeError("Handle %x cannot be cloned because it is invalid (error %d)", hndl, err);
   100 	}
   101 }
   102 
   103 static cell_t sm_GetMyHandle(IPluginContext *pContext, const cell_t *params)
   104 {
   105 	CPlugin *pPlugin = g_PluginSys.GetPluginByCtx(pContext->GetContext());
   106 
   107 	return pPlugin->GetMyHandle();
   108 }
   109 
   110 REGISTER_NATIVES(handles)
   111 {
   112 	{"IsValidHandle",			sm_IsValidHandle},
   113 	{"CloseHandle",				sm_CloseHandle},
   114 	{"CloneHandle",				sm_CloneHandle},
   115 	{"GetMyHandle",				sm_GetMyHandle},
   116 	{NULL,						NULL},
   117 };
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