/* * Signal handling functions * * Copyright (c) 2006-2007, Joachim Metz <forensics@hoffmannbv.nl>, * Hoffmann Investigations. All rights reserved. * * Refer to AUTHORS for acknowledgements. * * Redistribution and use in source and binary forms, with or without modification, * are permitted provided that the following conditions are met: * * - Redistributions of source code must retain the above copyright notice, *   this list of conditions and the following disclaimer. * - Redistributions in binary form must reproduce the above copyright notice, *   this list of conditions and the following disclaimer in the documentation *   and/or other materials provided with the distribution. * - Neither the name of the creator, related organisations, nor the names of *   its contributors may be used to endorse or promote products derived from *   this software without specific prior written permission. * - All advertising materials mentioning features or use of this software *   must acknowledge the contribution by people stated in the acknowledgements. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER, COMPANY AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */#include "../libewf/libewf_includes.h"#include "../libewf/libewf_common.h"#include "../libewf/libewf_notify.h"#include "ewfsignal.h"#ifdef HAVE_SIGNAL_H#ifdef HAVE_SYS_TYPES_H#include <sys/types.h>#endif#include <signal.h>/* Signal handler for Ctrl+C or Ctrl+Break signals */void ewfsignal_signal_handler( int signal ){	signal = 0;}void ewfsignal_initialize( void ){}#elif defined(HAVE_WINDOWS_API)#include <windows.h>#include <winnt.h>#include <crtdbg.h>/* You can pass this variable to your api if you * want to support cancellation.  The control handler * does nothing more than set the value of this variable to 1L. * On *nix you have to use signals to achieve the same result. */volatile int32_t cancelled;/* Signal handler for Ctrl+C or Ctrl+Break signals */int WINAPI ewfsignal_signal_handler( unsigned long signal ){	switch( signal )	{		/* use Ctrl+C or Ctrl+Break to simulate SERVICE_CONTROL_STOP in debug mode		 */		case CTRL_BREAK_EVENT:		case CTRL_C_EVENT:			LIBEWF_WARNING_PRINT( "ewfsignal_signal_handler: stopping at break signal.\n" );			InterlockedExchange( (long *) &cancelled, 1 );			return( 1 );		default:			break;	}	return( 0 );}/* Initialize memory usage and leakage debugging */void ewfsignal_initialize_memory_debug( void ){	int flag = 0;	/* Get the current state of the flag and store it in a temporary variable	 */	flag = _CrtSetDbgFlag( _CRTDBG_REPORT_FLAG );	/* Turn on client block identifiers and automatic leak detection	 */	flag |= ( _CRTDBG_ALLOC_MEM_DF | _CRTDBG_LEAK_CHECK_DF );	/* Set the new state for the flag	 */	_CrtSetDbgFlag( flag );}/* Set up signal handling */void ewfsignal_initialize( void ){	SetConsoleCtrlHandler( ewfsignal_signal_handler, 1 );	SetConsoleCtrlHandler( NULL, FALSE );	ewfsignal_initialize_memory_debug();	SetErrorMode( SEM_FAILCRITICALERRORS );#ifdef LOCALE_SUPPORT	/* Allow subsequent threads to have their own locale.	 * The current application is single threaded so this	 * call has no practical effect here.	 */	_configthreadlocale( _ENABLE_PER_THREAD_LOCALE );	/* Set the current thread locale to the user default	 * ANSI code page.	 */	setlocale( LC_ALL, "" );	/* Set the the code page used by multibyte functions	 * to use the same code page as the previous call to setlocale.	 */	_setmbcp( _MB_CP_LOCALE );#endif}#endif