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/*==LICENSE==*
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CyanWorlds.com Engine - MMOG client, server and tools
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Copyright (C) 2011 Cyan Worlds, Inc.
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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You can contact Cyan Worlds, Inc. by email legal@cyan.com
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or by snail mail at:
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Cyan Worlds, Inc.
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14617 N Newport Hwy
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Mead, WA 99021
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*==LICENSE==*/
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#ifndef PL_CHECKSUM_H
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#define PL_CHECKSUM_H
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#include "hsTypes.h"
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#include <openssl/md5.h>
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class plChecksum
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{
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public:
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typedef UInt32 SumStorage;
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private:
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SumStorage fSum;
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public:
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plChecksum(unsigned int bufsize, const char* buffer);
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static int GetChecksumSize() { return sizeof(SumStorage); }
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static int GetWindowSize() { return sizeof(SumStorage); }
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SumStorage GetChecksum() { return fSum; }
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};
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class plMD5Checksum
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{
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protected:
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hsBool fValid;
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MD5_CTX fContext;
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UInt8 fChecksum[ MD5_DIGEST_LENGTH ];
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UInt8 IHexCharToInt( char c ) const;
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public:
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plMD5Checksum( UInt32 size, UInt8 *buffer );
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plMD5Checksum();
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plMD5Checksum( const plMD5Checksum &rhs );
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plMD5Checksum( const char *fileName );
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hsBool IsValid( void ) const { return fValid; }
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void Clear();
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void CalcFromFile( const char *fileName );
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void Start( void );
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void AddTo( UInt32 size, const UInt8 *buffer );
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void Finish( void );
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const UInt8 *GetValue( void ) const { return fChecksum; }
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UInt32 GetSize( void ) const { return sizeof( fChecksum ); }
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// Backdoor for cached checksums (ie, if you loaded it off disk)
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void SetValue(UInt8* checksum);
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// Note: GetAsHexString() returns a pointer to a static string; do not rely on the contents of this string between calls!
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const char *GetAsHexString( void ) const;
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void SetFromHexString( const char *string );
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bool operator==( const plMD5Checksum &rhs ) const;
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bool operator!=( const plMD5Checksum &rhs ) const { return !operator==( rhs ); }
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};
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#endif // PL_CHECKSUM_H
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