/*
* Copyright (c) 2007, 2012, Oracle and/or its affiliates. All rights reserved.
* Use is subject to license terms.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
/* *********************************************************************
*
* The Original Code is the Netscape security libraries.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 1994-2000
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
*
* Last Modified Date from the Original Code: March 2012
*********************************************************************** */
/*
* Support routines for SECItem data structure.
*
* $Id: secitem.c,v 1.14 2006/05/22 22:24:34 wtchang%redhat.com Exp $
*/
#include <sys/types.h>
#ifndef _WIN32
#if !defined(__linux__) && !defined(_ALLBSD_SOURCE)
#include <sys/systm.h>
#endif /* __linux__ || _ALLBSD_SOURCE */
#include <sys/param.h>
#endif /* _WIN32 */
#ifdef _KERNEL
#include <sys/kmem.h>
#else
#include <string.h>
#ifndef _WIN32
#include <strings.h>
#endif /* _WIN32 */
#include <assert.h>
#endif
#include "ec.h"
#include "ecl-curve.h"
#include "ecc_impl.h"
void SECITEM_FreeItem(SECItem *, PRBool);
SECItem *
SECITEM_AllocItem(PRArenaPool *arena, SECItem *item, unsigned int len,
int kmflag)
{
SECItem *result = NULL;
void *mark = NULL;
if (arena != NULL) {
mark = PORT_ArenaMark(arena);
}
if (item == NULL) {
if (arena != NULL) {
result = PORT_ArenaZAlloc(arena, sizeof(SECItem), kmflag);
} else {
result = PORT_ZAlloc(sizeof(SECItem), kmflag);
}
if (result == NULL) {
goto loser;
}
} else {
PORT_Assert(item->data == NULL);
result = item;
}
result->len = len;
if (len) {
if (arena != NULL) {
result->data = PORT_ArenaAlloc(arena, len, kmflag);
} else {
result->data = PORT_Alloc(len, kmflag);
}
if (result->data == NULL) {
goto loser;
}
} else {
result->data = NULL;
}
if (mark) {
PORT_ArenaUnmark(arena, mark);
}
return(result);
loser:
if ( arena != NULL ) {
if (mark) {
PORT_ArenaRelease(arena, mark);
}
if (item != NULL) {
item->data = NULL;
item->len = 0;
}
} else {
if (result != NULL) {
SECITEM_FreeItem(result, (item == NULL) ? PR_TRUE : PR_FALSE);
}
/*
* If item is not NULL, the above has set item->data and
* item->len to 0.
*/
}
return(NULL);
}
SECStatus
SECITEM_CopyItem(PRArenaPool *arena, SECItem *to, const SECItem *from,
int kmflag)
{
to->type = from->type;
if (from->data && from->len) {
if ( arena ) {
to->data = (unsigned char*) PORT_ArenaAlloc(arena, from->len,
kmflag);
} else {
to->data = (unsigned char*) PORT_Alloc(from->len, kmflag);
}
if (!to->data) {
return SECFailure;
}
PORT_Memcpy(to->data, from->data, from->len);
/**代码未完, 请加载全部代码(NowJava.com).**/