dl_iso8583_common.c

来自「This package contains the following sour」· C语言 代码 · 共 96 行

/******************************************************************************/
/*                                                                            */
/* Copyright (C) 2005-2007 Oscar Sanderson                                    */
/*                                                                            */
/* This software is provided 'as-is', without any express or implied          */
/* warranty.  In no event will the author(s) be held liable for any damages   */
/* arising from the use of this software.                                     */
/*                                                                            */
/* Permission is granted to anyone to use this software for any purpose,      */
/* including commercial applications, and to alter it and redistribute it     */
/* freely, subject to the following restrictions:                             */
/*                                                                            */
/* 1. The origin of this software must not be misrepresented; you must not    */
/*    claim that you wrote the original software. If you use this software    */
/*    in a product, an acknowledgment in the product documentation would be   */
/*    appreciated but is not required.                                        */
/*                                                                            */
/* 2. Altered source versions must be plainly marked as such, and must not be */
/*    misrepresented as being the original software.                          */
/*                                                                            */
/* 3. This notice may not be removed or altered from any source distribution. */
/*                                                                            */
/******************************************************************************/

#include "dl_iso8583_common.h"

/******************************************************************************/

DL_ERR _DL_ISO8583_MSG_AllocField ( DL_UINT16        iField,
					                DL_UINT16        iSize,
						            DL_ISO8583_MSG  *ioMsg,
								    DL_UINT8       **oPtr )
{
	DL_ERR    err    = kDL_ERR_NONE;
	DL_UINT8 *tmpPtr = NULL;

	*oPtr = NULL;

	if ( ioMsg->sPtrNext ) /* static mode */
	{
		/* we cannot over-write an existing entry in static mode */
		if ( NULL != ioMsg->field[iField].ptr ) /* error */
		{
			return kDL_ERR_OTHER;
		}
		else /* ok */
		{
			/* allocate from static buffer */
			if ( (ioMsg->sPtrNext + iSize + 1) > ioMsg->sPtrEnd ) /* error */
			{
				return kDL_ERR_OTHER;
			}
			else /* ok */
			{
				ioMsg->field[iField].len  = iSize;
				tmpPtr                    = ioMsg->sPtrNext;
				ioMsg->field[iField].ptr  = tmpPtr;
				ioMsg->sPtrNext          += iSize + 1;
			}
		}
	}
	else /* dynamic mode */
	{
		err = DL_MEM_malloc(iSize+1,&tmpPtr);

		if ( !err )
		{
			DL_MEM_free(ioMsg->field[iField].ptr);
			ioMsg->field[iField].len = iSize;
			ioMsg->field[iField].ptr = tmpPtr;
		}
	}

	*oPtr = tmpPtr;

	return err;
}

/******************************************************************************/

void DL_ISO8583_COMMON_SetHandler ( DL_ISO8583_FIELD_DEF *iFieldDefArr,
								    DL_UINT8              iFieldDefItems,
								    DL_ISO8583_HANDLER   *oData )
{
	/* init outputs */
	DL_MEM_memset((void*)oData,0,sizeof(DL_ISO8583_HANDLER));

	/* set fields */
	oData->fieldArr   = iFieldDefArr;
	oData->fieldItems = iFieldDefItems;

	return;
}

/******************************************************************************/