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/*
* $Id$
*
* (C) 2006-2010 see AUTHORS
*
* This file is part of mplayerc.
*
* Mplayerc is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* Mplayerc is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
#include "stdafx.h"
#include "MiniDump.h"
#include "resource.h"
#include <DbgHelp.h>
#include "Version.h"
CMiniDump _Singleton;
bool CMiniDump::m_bMiniDumpEnabled = false;
typedef BOOL (WINAPI *MINIDUMPWRITEDUMP)( HANDLE hProcess, DWORD dwPid, HANDLE hFile, MINIDUMP_TYPE DumpType,
CONST PMINIDUMP_EXCEPTION_INFORMATION ExceptionParam,
CONST PMINIDUMP_USER_STREAM_INFORMATION UserStreamParam,
CONST PMINIDUMP_CALLBACK_INFORMATION CallbackParam
);
CMiniDump::CMiniDump()
{
#ifndef _DEBUG
SetUnhandledExceptionFilter( UnhandledExceptionFilter );
#ifndef _WIN64
// Enable catching in CRT (http://blog.kalmbachnet.de/?postid=75)
// PreventSetUnhandledExceptionFilter();
#endif
#endif
}
LPTOP_LEVEL_EXCEPTION_FILTER WINAPI MyDummySetUnhandledExceptionFilter( LPTOP_LEVEL_EXCEPTION_FILTER lpTopLevelExceptionFilter )
{
return NULL;
}
BOOL CMiniDump::PreventSetUnhandledExceptionFilter()
{
HMODULE hKernel32 = LoadLibrary( _T("kernel32.dll") );
if ( hKernel32 == NULL )
return FALSE;
void *pOrgEntry = GetProcAddress( hKernel32, "SetUnhandledExceptionFilter" );
if ( pOrgEntry == NULL )
return FALSE;
unsigned char newJump[ 100 ];
DWORD dwOrgEntryAddr = (DWORD) pOrgEntry;
dwOrgEntryAddr += 5; // add 5 for 5 op-codes for jmp far
void *pNewFunc = &MyDummySetUnhandledExceptionFilter;
DWORD dwNewEntryAddr = (DWORD) pNewFunc;
DWORD dwRelativeAddr = dwNewEntryAddr - dwOrgEntryAddr;
newJump[ 0 ] = 0xE9; // JMP absolute
memcpy( &newJump[ 1 ], &dwRelativeAddr, sizeof(pNewFunc) );
SIZE_T bytesWritten;
BOOL bRet = WriteProcessMemory( GetCurrentProcess(), pOrgEntry, newJump, sizeof(pNewFunc) + 1, &bytesWritten );
FreeLibrary( hKernel32 );
return bRet;
}
LONG WINAPI CMiniDump::UnhandledExceptionFilter( _EXCEPTION_POINTERS *lpTopLevelExceptionFilter )
{
LONG retval = EXCEPTION_CONTINUE_SEARCH;
HMODULE hDll = NULL;
_TCHAR szResult[ 800 ];
_TCHAR szDbgHelpPath[ _MAX_PATH ];
if ( !m_bMiniDumpEnabled )
return 0;
// firstly see if dbghelp.dll is around and has the function we need
// look next to the EXE first, as the one in System32 might be old
// (e.g. Windows 2000)
if ( GetModuleFileName(NULL, szDbgHelpPath, _MAX_PATH) )
{
_TCHAR *pSlash = _tcsrchr( szDbgHelpPath, _T('\\') );
if ( pSlash != NULL )
{
_tcscpy_s( pSlash + 1, _MAX_PATH + szDbgHelpPath - pSlash, _T("DBGHELP.DLL") );
hDll = ::LoadLibrary( szDbgHelpPath );
}
}
if ( hDll == NULL )
{
// load any version we can
hDll = ::LoadLibrary( _T("DBGHELP.DLL") );
}
if ( hDll != NULL )
{
MINIDUMPWRITEDUMP pMiniDumpWriteDump = (MINIDUMPWRITEDUMP)::GetProcAddress( hDll, "MiniDumpWriteDump" );
if ( pMiniDumpWriteDump != NULL )
{
_TCHAR szDumpPath[ _MAX_PATH ];
_TCHAR szVersion[ 40 ];
GetModuleFileName( NULL, szDumpPath, _MAX_PATH );
_stprintf_s( szVersion, countof(szVersion), _T(".%d.%d.%d.%d"), VERSION_MAJOR, VERSION_MINOR, VERSION_REV, VERSION_PATCH );
_tcscat_s( szDumpPath, _MAX_PATH, szVersion );
_tcscat_s( szDumpPath, _MAX_PATH, _T(".dmp") );
// create the file
HANDLE hFile = ::CreateFile( szDumpPath, GENERIC_WRITE, FILE_SHARE_WRITE, NULL, CREATE_ALWAYS,
FILE_ATTRIBUTE_NORMAL, NULL );
if ( hFile != INVALID_HANDLE_VALUE )
{
_MINIDUMP_EXCEPTION_INFORMATION ExInfo;
ExInfo.ThreadId = ::GetCurrentThreadId();
ExInfo.ExceptionPointers = lpTopLevelExceptionFilter;
ExInfo.ClientPointers = NULL;
// write the dump
BOOL bOK = pMiniDumpWriteDump( GetCurrentProcess(), GetCurrentProcessId(), hFile, MiniDumpNormal, &ExInfo, NULL, NULL );
if ( bOK )
{
_stprintf_s( szResult, countof(szResult), ResStr(IDS_MPC_CRASH), szDumpPath );
retval = EXCEPTION_EXECUTE_HANDLER;
}
else
{
_stprintf_s( szResult, countof(szResult), ResStr(IDS_MPC_MINIDUMP_FAIL), szDumpPath, GetLastError() );
}
::CloseHandle( hFile );
}
else
{
_stprintf_s( szResult, countof(szResult), ResStr(IDS_MPC_MINIDUMP_FAIL), szDumpPath, GetLastError() );
}
}
FreeLibrary( hDll );
}
if ( szResult )
MessageBox( NULL, szResult, _T("MPC-HC Mini Dump"), MB_OK );
return retval;
}
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