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/*==LICENSE==*
CyanWorlds.com Engine - MMOG client, server and tools
Copyright (C) 2011 Cyan Worlds, Inc.
This program 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.
This program 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/>.
You can contact Cyan Worlds, Inc. by email legal@cyan.com
or by snail mail at:
Cyan Worlds, Inc.
14617 N Newport Hwy
Mead, WA 99021
*==LICENSE==*/
#ifndef PL_CHECKSUM_H
#define PL_CHECKSUM_H
#include "hsTypes.h"
#include <openssl/md5.h>
class plChecksum
{
public:
typedef UInt32 SumStorage;
private:
SumStorage fSum;
public:
plChecksum(unsigned int bufsize, const char* buffer);
static int GetChecksumSize() { return sizeof(SumStorage); }
static int GetWindowSize() { return sizeof(SumStorage); }
SumStorage GetChecksum() { return fSum; }
};
class plMD5Checksum
{
protected:
hsBool fValid;
MD5_CTX fContext;
UInt8 fChecksum[ MD5_DIGEST_LENGTH ];
UInt8 IHexCharToInt( char c ) const;
public:
plMD5Checksum( UInt32 size, UInt8 *buffer );
plMD5Checksum();
plMD5Checksum( const plMD5Checksum &rhs );
plMD5Checksum( const char *fileName );
hsBool IsValid( void ) const { return fValid; }
void Clear();
void CalcFromFile( const char *fileName );
void Start( void );
void AddTo( UInt32 size, const UInt8 *buffer );
void Finish( void );
const UInt8 *GetValue( void ) const { return fChecksum; }
UInt32 GetSize( void ) const { return sizeof( fChecksum ); }
// Backdoor for cached checksums (ie, if you loaded it off disk)
void SetValue(UInt8* checksum);
// Note: GetAsHexString() returns a pointer to a static string; do not rely on the contents of this string between calls!
const char *GetAsHexString( void ) const;
void SetFromHexString( const char *string );
bool operator==( const plMD5Checksum &rhs ) const;
bool operator!=( const plMD5Checksum &rhs ) const { return !operator==( rhs ); }
};
#endif // PL_CHECKSUM_H