core/logic/MemoryUtils.h
author Kyle Sanderson <kyle.leet@gmail.com>
Mon Aug 12 00:42:56 2013 +0100 (2013-08-12)
changeset 3994 4bc73bac0f4c
parent 3295 598bf07e4d51
permissions -rw-r--r--
Added helper stock to check if a command exists. (bug 5510, r=asherkin)
     1 /**
     2  * vim: set ts=4 sw=4 tw=99 noet :
     3  * =============================================================================
     4  * SourceMod
     5  * Copyright (C) 2004-2011 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 
    30 #ifndef _INCLUDE_SOURCEMOD_MEMORYUTILS_H_
    31 #define _INCLUDE_SOURCEMOD_MEMORYUTILS_H_
    32 
    33 #include "common_logic.h"
    34 #include <IMemoryUtils.h>
    35 #if defined PLATFORM_LINUX || defined PLATFORM_APPLE
    36 #include <sh_vector.h>
    37 #include "sm_symtable.h"
    38 
    39 using namespace SourceHook;
    40 #endif
    41 
    42 using namespace SourceMod;
    43 
    44 #ifdef PLATFORM_APPLE
    45 #include <CoreServices/CoreServices.h>
    46 #endif
    47 
    48 struct DynLibInfo
    49 {
    50 	void *baseAddress;
    51 	size_t memorySize;
    52 };
    53 
    54 #if defined PLATFORM_LINUX || defined PLATFORM_APPLE
    55 struct LibSymbolTable
    56 {
    57 	SymbolTable table;
    58 	uintptr_t lib_base;
    59 	uint32_t last_pos;
    60 };
    61 #endif
    62 
    63 class MemoryUtils : 
    64 	public IMemoryUtils,
    65 	public SMGlobalClass
    66 {
    67 public:
    68 	MemoryUtils();
    69 	~MemoryUtils();
    70 public: // SMGlobalClass
    71 	void OnSourceModAllInitialized();
    72 public: // IMemoryUtils
    73 	void *FindPattern(const void *libPtr, const char *pattern, size_t len);
    74 	void *ResolveSymbol(void *handle, const char *symbol);
    75 public:
    76 	bool GetLibraryInfo(const void *libPtr, DynLibInfo &lib);
    77 #if defined PLATFORM_LINUX || defined PLATFORM_APPLE
    78 private:
    79 	CVector<LibSymbolTable *> m_SymTables;
    80 #ifdef PLATFORM_APPLE
    81 	struct dyld_all_image_infos *m_ImageList;
    82 	SInt32 m_OSXMajor;
    83 	SInt32 m_OSXMinor;
    84 #endif
    85 #endif
    86 };
    87 
    88 extern MemoryUtils g_MemUtils;
    89 
    90 #endif // _INCLUDE_SOURCEMOD_MEMORYUTILS_H_