RedAlert/CODE/SHAPIPE.CPP

/*
**	Command & Conquer Red Alert(tm)
**	Copyright 2025 Electronic Arts 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/>.
*/

/* $Header: /CounterStrike/SHAPIPE.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 : SHAPIPE.CPP                                                  *
 *                                                                                             *
 *                   Programmer : Joe L. Bostic                                                *
 *                                                                                             *
 *                   Start Date : 06/30/96                                                     *
 *                                                                                             *
 *                  Last Update : July 3, 1996 [JLB]                                           *
 *                                                                                             *
 *---------------------------------------------------------------------------------------------*
 * Functions:                                                                                  *
 *   SHAPipe::Result -- Fetches the current SHA value.                                         *
 *   SHAPipe::Put -- Pass data through the pipe, but use it to build a SHA digest.             *
 * - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */


#include	"shapipe.h"


/***********************************************************************************************
 * SHAPipe::Put -- Pass data through the pipe, but use it to build a SHA digest.               *
 *                                                                                             *
 *    This pipe segment will not modify the data, but it will examine the data and use it when *
 *    building a SHA digest.                                                                   *
 *                                                                                             *
 * INPUT:   source   -- Pointer to the data to flow through the pipe.                          *
 *                                                                                             *
 *          length   -- The number of bytes to submit.                                         *
 *                                                                                             *
 * OUTPUT:  Returns with the actual number of bytes output at the distant final end of the     *
 *          pipe chain.                                                                        *
 *                                                                                             *
 * WARNINGS:   none                                                                            *
 *                                                                                             *
 * HISTORY:                                                                                    *
 *   07/03/1996 JLB : Created.                                                                 *
 *=============================================================================================*/
int SHAPipe::Put(void const * source, int slen)
{
	SHA.Hash(source, slen);
	return(Pipe::Put(source, slen));
}


/***********************************************************************************************
 * SHAPipe::Result -- Fetches the current SHA value.                                           *
 *                                                                                             *
 *    This routine will return the SHA digest for the data that has passed through this        *
 *    link in the pipe chain. It is a non-destructive read.                                    *
 *                                                                                             *
 * INPUT:   result   -- Pointer to the buffer to hold the SHA digest. This buffer must be      *
 *                      20 bytes long.                                                         *
 *                                                                                             *
 * OUTPUT:  Returns with the number of bytes copied into the buffer. This will be 20.          *
 *                                                                                             *
 * WARNINGS:   none                                                                            *
 *                                                                                             *
 * HISTORY:                                                                                    *
 *   07/03/1996 JLB : Created.                                                                 *
 *=============================================================================================*/
int SHAPipe::Result(void * result) const
{
	return(SHA.Result(result));
}