CnC_Remastered_Collection

Command and Conquer: Red Alert
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BLOWPIPE.H (3609B)

      1 //
      2 // Copyright 2020 Electronic Arts Inc.
      3 //
      4 // TiberianDawn.DLL and RedAlert.dll and corresponding source code is free 
      5 // software: you can redistribute it and/or modify it under the terms of 
      6 // the GNU General Public License as published by the Free Software Foundation, 
      7 // either version 3 of the License, or (at your option) any later version.
      8 
      9 // TiberianDawn.DLL and RedAlert.dll and corresponding source code is distributed 
     10 // in the hope that it will be useful, but with permitted additional restrictions 
     11 // under Section 7 of the GPL. See the GNU General Public License in LICENSE.TXT 
     12 // distributed with this program. You should have received a copy of the 
     13 // GNU General Public License along with permitted additional restrictions 
     14 // with this program. If not, see https://github.com/electronicarts/CnC_Remastered_Collection
     15 
     16 /* $Header: /CounterStrike/BLOWPIPE.H 1     3/03/97 10:24a Joe_bostic $ */
     17 /***********************************************************************************************
     18  ***              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               ***
     19  ***********************************************************************************************
     20  *                                                                                             *
     21  *                 Project Name : Command & Conquer                                            *
     22  *                                                                                             *
     23  *                    File Name : BLOWPIPE.H                                                   *
     24  *                                                                                             *
     25  *                   Programmer : Joe L. Bostic                                                *
     26  *                                                                                             *
     27  *                   Start Date : 06/30/96                                                     *
     28  *                                                                                             *
     29  *                  Last Update : June 30, 1996 [JLB]                                          *
     30  *                                                                                             *
     31  *---------------------------------------------------------------------------------------------*
     32  * Functions:                                                                                  *
     33  * - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
     34 
     35 
     36 #ifndef BLOWPIPE_H
     37 #define BLOWPIPE_H
     38 
     39 #include	"pipe.h"
     40 #include	"blowfish.h"
     41 
     42 /*
     43 **	Performs Blowfish encryption/decryption on the data stream that is piped
     44 **	through this class.
     45 */
     46 class BlowPipe : public Pipe
     47 {
     48 	public:
     49 		typedef enum CryptControl {
     50 			ENCRYPT,
     51 			DECRYPT
     52 		} CryptControl;
     53 
     54 		BlowPipe(CryptControl control) : BF(NULL), Counter(0), Control(control) {}
     55 		virtual ~BlowPipe(void) {delete BF;BF = NULL;}
     56 		virtual int Flush(void);
     57 
     58 		virtual int Put(void const * source, int slen);
     59 
     60 		// Submit key for blowfish engine.
     61 		void Key(void const * key, int length);
     62 
     63 	protected:
     64 		/*
     65 		**	The Blowfish engine used for encryption/decryption. If this pointer is
     66 		**	NULL, then this indicates that the blowfish engine is not active and no
     67 		**	key has been submitted. All data would pass through this pipe unchanged
     68 		**	in that case.
     69 		*/
     70 		BlowfishEngine * BF;
     71 
     72 	private:
     73 		char Buffer[8];
     74 		int Counter;
     75 		CryptControl Control;
     76 
     77 		BlowPipe(BlowPipe & rvalue);
     78 		BlowPipe & operator = (BlowPipe const & pipe);
     79 };
     80 
     81 
     82 #endif