141 lines
3.5 KiB
C
141 lines
3.5 KiB
C
/*
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* Copyright (C) 1997-2005 by Objective Systems, Inc.
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*
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* This software is furnished under an open source license and may be
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* used and copied only in accordance with the terms of this license.
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* The text of the license may generally be found in the root
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* directory of this installation in the COPYING file. It
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* can also be viewed online at the following URL:
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*
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* http://www.obj-sys.com/open/license.html
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*
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* Any redistributions of this file including modified versions must
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* maintain this copyright notice.
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*
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*****************************************************************************/
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#include "ooasn1.h"
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#include <stdlib.h>
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int initContext (OOCTXT* pctxt)
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{
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memset (pctxt, 0, sizeof(OOCTXT));
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memHeapCreate (&pctxt->pTypeMemHeap);
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pctxt->pMsgMemHeap = pctxt->pTypeMemHeap;
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memHeapAddRef (&pctxt->pMsgMemHeap);
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return ASN_OK;
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}
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int initContextBuffer
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(OOCTXT* pctxt, const ASN1OCTET* bufaddr, ASN1UINT bufsiz)
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{
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if (bufaddr == 0) {
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/* dynamic buffer */
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if (bufsiz == 0) bufsiz = ASN_K_ENCBUFSIZ;
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pctxt->buffer.data = (ASN1OCTET*)
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memHeapAlloc (&pctxt->pMsgMemHeap, bufsiz);
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if (!pctxt->buffer.data) return ASN_E_NOMEM;
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pctxt->buffer.size = bufsiz;
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pctxt->buffer.dynamic = TRUE;
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}
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else {
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/* static buffer */
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pctxt->buffer.data = (ASN1OCTET*) bufaddr;
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pctxt->buffer.size = bufsiz;
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pctxt->buffer.dynamic = FALSE;
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}
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pctxt->buffer.byteIndex = 0;
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pctxt->buffer.bitOffset = 8;
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return ASN_OK;
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}
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int initSubContext (OOCTXT* pctxt, OOCTXT* psrc)
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{
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int stat = ASN_OK;
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memset (pctxt, 0, sizeof(OOCTXT));
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pctxt->pTypeMemHeap = psrc->pTypeMemHeap;
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memHeapAddRef (&pctxt->pTypeMemHeap);
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pctxt->pMsgMemHeap = psrc->pMsgMemHeap;
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memHeapAddRef (&pctxt->pMsgMemHeap);
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pctxt->flags = psrc->flags;
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pctxt->buffer.dynamic = TRUE;
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pctxt->buffer.byteIndex = 0;
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pctxt->buffer.bitOffset = 8;
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return stat;
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}
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void freeContext (OOCTXT* pctxt)
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{
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ASN1BOOL saveBuf = (pctxt->flags & ASN1SAVEBUF) != 0;
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if (pctxt->buffer.dynamic && pctxt->buffer.data) {
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if (saveBuf) {
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memHeapMarkSaved (&pctxt->pMsgMemHeap, pctxt->buffer.data, TRUE);
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}
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else {
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memHeapFreePtr (&pctxt->pMsgMemHeap, pctxt->buffer.data);
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}
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}
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errFreeParms (&pctxt->errInfo);
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memHeapRelease (&pctxt->pTypeMemHeap);
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memHeapRelease (&pctxt->pMsgMemHeap);
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}
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void copyContext (OOCTXT* pdest, OOCTXT* psrc)
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{
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memcpy (&pdest->buffer, &psrc->buffer, sizeof(ASN1BUFFER));
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pdest->flags = psrc->flags;
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}
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void setCtxtFlag (OOCTXT* pctxt, ASN1USINT mask)
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{
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pctxt->flags |= mask;
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}
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void clearCtxtFlag (OOCTXT* pctxt, ASN1USINT mask)
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{
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pctxt->flags &= ~mask;
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}
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int setPERBufferUsingCtxt (OOCTXT* pTarget, OOCTXT* pSource)
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{
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int stat = initContextBuffer
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(pTarget, pSource->buffer.data, pSource->buffer.size);
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if (ASN_OK == stat) {
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pTarget->buffer.byteIndex = pSource->buffer.byteIndex;
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pTarget->buffer.bitOffset = pSource->buffer.bitOffset;
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}
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return stat;
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}
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int setPERBuffer (OOCTXT* pctxt,
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ASN1OCTET* bufaddr, ASN1UINT bufsiz, ASN1BOOL aligned)
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{
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int stat = initContextBuffer (pctxt, bufaddr, bufsiz);
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if(stat != ASN_OK) return stat;
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return ASN_OK;
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}
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OOCTXT* newContext ()
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{
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OOCTXT* pctxt = (OOCTXT*) ASN1CRTMALLOC0 (sizeof(OOCTXT));
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if (pctxt) {
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if (initContext(pctxt) != ASN_OK) {
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ASN1CRTFREE0 (pctxt);
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pctxt = 0;
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}
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pctxt->flags |= ASN1DYNCTXT;
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}
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return (pctxt);
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}
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