Check your Files with Client Source

[Koray 1943]

UserInterface/CheckLatestFiles.cpp

Select all codes and change with this

#include "StdAfx.h"
#if defined(CHECK_LATEST_DATA_FILES)
#include "CheckLatestFiles.h"
#include "resource.h"

static struct SCHECKFILELIST {
	const char*		szFileName;
	DWORD			dwCRC32;
	ULONGLONG		ullSize;
} s_astFileHashList[] = {
	//   filename                   crc(dword)      size(ull)[optional]
	{ "errorlog.txt",				0xf7c257a0,				135 },
	{ "file1.py",					0xf15468a0,				169 },
	{ "file.epk",					0xf7685410,				465 }
	//etc.
};

static bool gs_bQuit = false;
bool CheckLatestFiles_PollEvent( void )
{
	return gs_bQuit;
}

int GetFileSize(char* FileName) {
	HANDLE hFile = CreateFileA(FileName, GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
	return GetFileSize(hFile, NULL);
}

inline bool is_file_exist(const std::string& name) {
	struct stat buffer;
	return (stat(name.c_str(), &buffer) == 0);
}

// 데이타 파일 CRC32 값 검사하기 //size control added
bool CheckFileHash( const char* szFileName, DWORD dwCRC32, ULONGLONG ullFileSize = NULL)
{
	char szMessage[256];

	if (!is_file_exist(szFileName)) {
		_snprintf(szMessage, sizeof(szMessage)/sizeof(szMessage[0])-1, ApplicationStringTable_GetStringz(IDS_ERR_CANNOT_READ_FILE, "ERR_CANNOT_READ_FILE"), szFileName);
		ApplicationSetErrorString(szMessage);
		return false;
	}

	else {
		DWORD dwLocalCRC32 = GetFileCRC32(szFileName);
		if (dwCRC32 != dwLocalCRC32) {
			_snprintf(szMessage, sizeof(szMessage)/sizeof(szMessage[0])-1, ApplicationStringTable_GetStringz(IDS_ERR_NOT_LATEST_FILE, "ERR_NOT_LATEST_FILE"), szFileName);
			ApplicationSetErrorString(szMessage);
			return false;
		}
		else {
			int ullLocalSize = GetFileSize(szFileName);
			if ( ullFileSize) {
				if (ullLocalSize != ullFileSize) {
					ApplicationSetErrorString(("%s size not valid", szFileName));
					return false;
				}
			}
		}
	}

	return true;
}

UINT CALLBACK CheckLatestFilesEntry(void * pThis)
{
	::Sleep( 500 );
	for( int i=0; s_astFileHashList[i].szFileName; i++ ) {
		if(s_astFileHashList[i].ullSize) {
			if(!CheckFileHash(s_astFileHashList[i].szFileName, s_astFileHashList[i].dwCRC32, s_astFileHashList[i].ullSize)){
				gs_bQuit = true;
				break;
			}
		}
		else {
			if(!CheckFileHash(s_astFileHashList[i].szFileName, s_astFileHashList[i].dwCRC32)){
				gs_bQuit = true;
				break;
			}
		}
	}
	return true;
}

bool CheckLatestFiles( void )
{
	unsigned int uThreadID = 0;

	HANDLE hThread = (HANDLE) _beginthreadex(NULL, 0, CheckLatestFilesEntry, NULL, 0, &uThreadID);
	::SetThreadPriority(hThread, THREAD_PRIORITY_LOWEST);
	return true;
}
#endif

 

 

Now change or add

	{ "errorlog.txt",				0xf7c257a0,				135 },
	{ "file1.py",					0xf15468a0,				169 },
	{ "file.epk",					0xf7685410,				465 }

This list according to yourself(Size is optional)

 

Now open Locale_inc.h 

#define CHECK_LATEST_DATA_FILES

and add this line

Edited June 21, 2015 by Koray

[MORTE 76]

//   filename                   crc(dword)      size(ull)[optional]
	{ "errorlog.txt",				0xf7c257a0,				135 },
	{ "file1.py",					0xf15468a0,				169 },
	{ "file.epk",					0xf7685410,				465 }
	//etc.

Como how do you know the crc?

0xf7c257a0

[FlorinMarian 122]

Thank you for your post but it's not a useful release.

A lot of players know how to use "CRC32 changer".

A md5 encryption can be very useful.

[MORTE 76]

They can also modify the bin and there is no check

[Ira™ 41]

Everything you have written there is wrong.

Edited June 21, 2015 by Ira™

[Exygo 1050]

Everything you have written there is wrong.

​Prove it

[Night 363]

i used this without changes months ago but it took too much time especially if you forget it or something like that , the size check could be usefull but if not protected then it is kids play to edit it.

[metin2team 742]

i used this without changes months ago but it took too much time especially if you forget it or something like that , the size check could be usefull but if not protected then it is kids play to edit it.

 I've been using that since March 2014 with changes..

but for you, you have to change the CRC32 to something else md5 for example ...

 

because: http://lmgtfy.com/?q=peid+crc+fix

with such tools you can fix the crc and bypass the check

Edited June 21, 2015 by metin2team

[Koray 1943]

Yes possibly crc check very easy bypass therefore I added size option

Btw If you need crc getter tool I recommend this http://www.igorware.com/hasher

Edited June 21, 2015 by Koray

[MORTE 76]

Koray

 

it is possible for any check on the game case muddem the metin2client.bin ?

Edited August 24, 2022 by Metin2 Dev
Core X - External 2 Internal

[Ira™ 41]

Everything you have written there is wrong.

​Prove it

​

Unlike you who, only copy that is on dev, and seel for money.
I do not sell protections that are already free.

What I mean is that no one should sell what is not his.
I am against you, who are working illegally sell and source.

 

Edited June 22, 2015 by Ira™