ds@1952: /**
ds@1952:  * vim: set ts=4 :
ds@1952:  * =============================================================================
ds@1952:  * SourceMod
ds@1952:  * Copyright (C) 2004-2008 AlliedModders LLC.  All rights reserved.
ds@1952:  * =============================================================================
ds@1952:  *
ds@1952:  * This program is free software; you can redistribute it and/or modify it under
ds@1952:  * the terms of the GNU General Public License, version 3.0, as published by the
ds@1952:  * Free Software Foundation.
ds@1952:  * 
ds@1952:  * This program is distributed in the hope that it will be useful, but WITHOUT
ds@1952:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
ds@1952:  * FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
ds@1952:  * details.
ds@1952:  *
ds@1952:  * You should have received a copy of the GNU General Public License along with
ds@1952:  * this program.  If not, see <http://www.gnu.org/licenses/>.
ds@1952:  *
ds@1952:  * As a special exception, AlliedModders LLC gives you permission to link the
ds@1952:  * code of this program (as well as its derivative works) to "Half-Life 2," the
ds@1952:  * "Source Engine," the "SourcePawn JIT," and any Game MODs that run on software
ds@1952:  * by the Valve Corporation.  You must obey the GNU General Public License in
ds@1952:  * all respects for all other code used.  Additionally, AlliedModders LLC grants
ds@1952:  * this exception to all derivative works.  AlliedModders LLC defines further
ds@1952:  * exceptions, found in LICENSE.txt (as of this writing, version JULY-31-2007),
ds@1952:  * or <http://www.sourcemod.net/license.php>.
ds@1952:  *
ds@1952:  * Version: $Id$
ds@1952:  */
ds@1952: 
ds@1952: #if 0
ds@1952: #include "sm_globals.h"
ds@1952: #include "sourcemm_api.h"
ds@1952: #include "Tlhelp32.h"
ds@1952: #include "LibrarySys.h"
ds@1952: #include "minidump.h"
ds@1952: 
ds@1952: BOOL
ds@1952: WINAPI
ds@1952: MiniDumpWriteDump2(
ds@1952: 				  IN HANDLE hProcess,
ds@1952: 				  IN DWORD ProcessId,
ds@1952: 				  IN HANDLE hFile,
ds@1952: 				  IN MINIDUMP_TYPE DumpType,
ds@1952: 				  IN CONST PMINIDUMP_EXCEPTION_INFORMATION ExceptionParam, OPTIONAL
ds@1952: 				  IN CONST PMINIDUMP_USER_STREAM_INFORMATION UserStreamParam, OPTIONAL
ds@1952: 				  IN CONST PMINIDUMP_CALLBACK_INFORMATION CallbackParam OPTIONAL
ds@1952: 				  )
ds@1952: {
ds@1952: 	DumpType = (MINIDUMP_TYPE)((int)DumpType|MiniDumpWithFullMemory|MiniDumpWithHandleData);
ds@1952: 	return MiniDumpWriteDump(hProcess, ProcessId, hFile, DumpType, ExceptionParam, UserStreamParam, CallbackParam);
ds@1952: }
ds@1952: 
ds@1952: FARPROC WINAPI GetProcAddress2(HMODULE hModule, LPCSTR lpProcName)
ds@1952: {
ds@1952: 	if (strcmp(lpProcName, "MiniDumpWriteDump") == 0)
ds@1952: 	{
ds@1952: 		return (FARPROC)MiniDumpWriteDump2;
ds@1952: 	}
ds@1952: 
ds@1952: 	return GetProcAddress(hModule, lpProcName);
ds@1952: }
ds@1952: 
ds@1952: class CrazyWindowsDebugger : public SMGlobalClass
ds@1952: {
ds@1952: public:
ds@1952: 	void OnSourceModAllInitialized()
ds@1952: 	{
ds@1952: 		HANDLE hModuleList = CreateToolhelp32Snapshot(TH32CS_SNAPMODULE, GetCurrentProcessId());
ds@1952: 		MODULEENTRY32 me32;
ds@1952: 
ds@1952: 		me32.dwSize = sizeof(MODULEENTRY32);
ds@1952: 
ds@1952: 		if (!Module32First(hModuleList, &me32))
ds@1952: 		{
ds@1952: 			Error("Could not initialize crazy debugger!");
ds@1952: 		}
ds@1952: 
ds@1952: 		bool found = false;
ds@1952: 
ds@1952: 		do
ds@1952: 		{
ds@1952: 			if (strcasecmp(me32.szModule, "steam.dll") == 0)
ds@1952: 			{
ds@1952: 				IMAGE_DOS_HEADER *dos = (IMAGE_DOS_HEADER *)me32.modBaseAddr;
ds@1952: 				if (dos->e_magic != IMAGE_DOS_SIGNATURE)
ds@1952: 				{
ds@1952: 					Error("[SM] Could not detect steam.dll with valid DOS signature");
ds@1952: 				}
ds@1952: 				char *base = (char *)dos;
ds@1952: 				IMAGE_NT_HEADERS *nt = (IMAGE_NT_HEADERS *)(base + dos->e_lfanew);
ds@1952: 				if (nt->Signature != IMAGE_NT_SIGNATURE)
ds@1952: 				{
ds@1952: 					Error("[SM] Could not detect steam.dll with valid NT signature");
ds@1952: 				}
ds@1952: 				IMAGE_IMPORT_DESCRIPTOR *desc = 
ds@1952: 					(IMAGE_IMPORT_DESCRIPTOR *)
ds@1952: 					(base + nt->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_IMPORT].VirtualAddress);
ds@1952: 				if (base == (char *)desc)
ds@1952: 				{
ds@1952: 					Error("[SM] Could not find the steam.dll IAT");
ds@1952: 				}
ds@1952: 				while (desc->Name)
ds@1952: 				{
ds@1952: 					if (desc->FirstThunk != 0)
ds@1952: 					{
ds@1952: 						IMAGE_THUNK_DATA *data = (IMAGE_THUNK_DATA *)(base + desc->OriginalFirstThunk);
ds@1952: 						DWORD *iat = (DWORD *)(base + desc->FirstThunk);
ds@1952: 						while (data->u1.Function)
ds@1952: 						{
ds@1952: 							if ((data->u1.Ordinal & IMAGE_ORDINAL_FLAG32) != IMAGE_ORDINAL_FLAG32)
ds@1952: 							{
ds@1952: 								IMAGE_IMPORT_BY_NAME *import = (IMAGE_IMPORT_BY_NAME *)(base + data->u1.AddressOfData);
ds@1952: 								if (strcmp((char *)import->Name, "GetProcAddress") == 0)
ds@1952: 								{
ds@1952: 									DWORD oldprot, oldprot2;
ds@1952: 									VirtualProtect(iat, 4, PAGE_READWRITE, &oldprot);
ds@1952: 									*iat = (DWORD)GetProcAddress2;
ds@1952: 									VirtualProtect(iat, 4, oldprot, &oldprot2);
ds@1952: 									found = true;
ds@1952: 									goto _end;
ds@1952: 								}
ds@1952: 							}
ds@1952: 							data++;
ds@1952: 							iat++;
ds@1952: 						}
ds@1952: 					}
ds@1952: 					desc++;
ds@1952: 				}
ds@1952: 				break;
ds@1952: 			}
ds@1952: 		} while  (Module32Next(hModuleList, &me32));
ds@1952: 
ds@1952: _end:
ds@1952: 
ds@1952: 		if (!found)
ds@1952: 		{
ds@1952: 			Error("Could not find steam.dll's GetProcAddress IAT entry");
ds@1952: 		}
ds@1952: 
ds@1952: 		CloseHandle(hModuleList);
ds@1952: 	}
ds@1952: } s_CrazyDebugger;
ds@1952: #endif