/*
 * MDLib.h - Ron Rivest's Message-Digest Algorithms Shared Library
 *
 * This code is in the public domain. I would appreciate bug reports and
 * enhancements.
 *
 * Duncan S Wong  <swong@ieee.org>
 *
 * Jan 3, 2001 - Initial Version
 */

// MDLib Version 0.1  (Jan 3, 2001) - Initial Version

#ifndef __MDLIB_H__
#define __MDLIB_H__

#ifndef __palmos__
#define __palmos__
#endif

#include <PalmOS.h>     // for OS 3.5, previously Pilot.h
#include "md5.h"
#include "md4.h"
#include "md2.h"

// Use this for SysLibFind calls.
// This is what we 'name' our dispatch table, too.
#define MDLIB_NAME	   "MDLib"
#define MDLIB_CREATOR  'DWMD'      // Register this with Palm

// These are possible error types that the library might return:
typedef enum tagMDErrEnum
{
	MDErrNone      = 0,			
	MDErrParam     = -1,
	MDErrNoGlobals = -2

	// Your custom return codes go here...
} MDErr;

// These are trap identifiers.
// The PalmOS constant 'sysLibTrapCustom' is the first trap number
// we can use after open, close, sleep, and wake.
typedef enum tagMDTrapNumEnum
{
	// - Trap modification checklist -
	// 
	// If you add, remove or otherwise modify something here,
  // be sure you've also done all of the following steps!
  //
	// 0) All trap identifiers must always run sequentially; no gaps!
	// 1) Modify the MDTrapNumEnum in MDLib.h
	// 2) Modify the DC.W to DispatchTable() in MDLibDispatch.c (no gaps!)
	// 3) Modify the JMP in DispatchTable() in MDLibDispatch.c (no gaps!)
	// 4) Update NUMBER_OF_FUNCTIONS in MDLibDispatch.c (0-based)
	// 5) Add or remove an "extern MyFunc(...) SYS_TRAP(MDTrapMyFunc)" prototype somewhere

	MDLibTrapMD5Init            = sysLibTrapCustom,    // libDispatchEntry(4)
	MDLibTrapMD5Update,
	MDLibTrapMD5Final,
	MDLibTrapMD4Init,
	MDLibTrapMD4Update,
	MDLibTrapMD4Final,
	MDLibTrapMD2Init,
	MDLibTrapMD2Update,
	MDLibTrapMD2Final
} MDTrapNumEnum;


/*************************
 * MDLib Interface
 *************************/
// These are the four required entry points:
extern MDErr MDLibOpen(UInt16 uRefNum)  SYS_TRAP(sysLibTrapOpen);
extern MDErr MDLibClose(UInt16 uRefNum, UInt32* dwRefCountP)  SYS_TRAP(sysLibTrapClose);
extern Err   MDLibSleep(UInt16 uRefNum) SYS_TRAP(sysLibTrapSleep);
extern Err   MDLibWake(UInt16 uRefNum)  SYS_TRAP(sysLibTrapWake);

// Here are the actual functions we want the library to extend to callers.
extern void MDLibMD5Init(UInt16 uRefNum, MD5_CTX *context)  SYS_TRAP(MDLibTrapMD5Init);
extern void MDLibMD5Update(UInt16 uRefNum, MD5_CTX *context, unsigned char *input, unsigned int inputLen)  SYS_TRAP(MDLibTrapMD5Update);
extern void MDLibMD5Final(UInt16 uRefNum, unsigned char digest[16], MD5_CTX *context)  SYS_TRAP(MDLibTrapMD5Final);
extern void MDLibMD4Init(UInt16 uRefNum, MD4_CTX *context)  SYS_TRAP(MDLibTrapMD4Init);
extern void MDLibMD4Update(UInt16 uRefNum, MD4_CTX *context, unsigned char *input, unsigned int inputLen)  SYS_TRAP(MDLibTrapMD4Update);
extern void MDLibMD4Final(UInt16 uRefNum, unsigned char digest[16], MD4_CTX *context)  SYS_TRAP(MDLibTrapMD4Final);
extern void MDLibMD2Init(UInt16 uRefNum, MD2_CTX *context)  SYS_TRAP(MDLibTrapMD2Init);
extern void MDLibMD2Update(UInt16 uRefNum, MD2_CTX *context, unsigned char *input, unsigned int inputLen)  SYS_TRAP(MDLibTrapMD2Update);
extern void MDLibMD2Final(UInt16 uRefNum, unsigned char digest[16], MD2_CTX *context)  SYS_TRAP(MDLibTrapMD2Final);

#endif