//
// Copyright 2020 Electronic Arts Inc.
//
// TiberianDawn.DLL and RedAlert.dll and corresponding source code 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.
// TiberianDawn.DLL and RedAlert.dll and corresponding source code is distributed
// in the hope that it will be useful, but with permitted additional restrictions
// under Section 7 of the GPL. See the GNU General Public License in LICENSE.TXT
// distributed with this program. You should have received a copy of the
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/* $Header: /CounterStrike/SHASTRAW.CPP 1 3/03/97 10:25a Joe_bostic $ */
/***********************************************************************************************
*** C O N F I D E N T I A L --- W E S T W O O D S T U D I O S ***
***********************************************************************************************
* *
* Project Name : Command & Conquer *
* *
* File Name : SHASTRAW.CPP *
* *
* Programmer : Joe L. Bostic *
* *
* Start Date : 07/02/96 *
* *
* Last Update : July 3, 1996 [JLB] *
* *
*---------------------------------------------------------------------------------------------*
* Functions: *
* SHAStraw::Get -- Fetch data from the straw and process the SHA with the data. *
* SHAStraw::Result -- Fetches the current SHA digest. *
* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
#include "shastraw.h"
/***********************************************************************************************
* SHAStraw::Get -- Fetch data from the straw and process the SHA with the data. *
* *
* This routine will fetch the requested data and as it passes through this straw it will *
* submit it to the SHA processor. The data that passes through is unmodified by this *
* straw segment. *
* *
* INPUT: source -- Pointer to the buffer that will hold the requested data. *
* *
* length -- The length of the data requested. *
* *
* OUTPUT: Returns with the number of bytes stored in the buffer. If this number is less *
* than the number requested, then this indicates that the data stream has been *
* exhausted. *
* *
* WARNINGS: none *
* *
* HISTORY: *
* 07/03/1996 JLB : Created. *
*=============================================================================================*/
int SHAStraw::Get(void * source, int slen)
{
if (source == NULL || slen < 1) {
return(0);
}
int counter = Straw::Get(source, slen);
SHA.Hash(source, counter);
return(counter);
}
/***********************************************************************************************
* SHAStraw::Result -- Fetches the current SHA digest. *
* *
* Use this routine to fetch the current SHA digest from the straw. It will return the *
* digest of the data that has passed through this straw segment. *
* *
* INPUT: result -- Pointer to the buffer to hold the message digest. The buffer must be *
* 20 bytes long. *
* *
* OUTPUT: Returns with the number of bytes stored into the digest buffer. This will always *
* be 20. *
* *
* WARNINGS: none *
* *
* HISTORY: *
* 07/03/1996 JLB : Created. *
*=============================================================================================*/
int SHAStraw::Result(void * result) const
{
return(SHA.Result(result));
}