/* BEGIN CSTYLED */
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* 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):
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
/*
* Copyright (c) 2007, 2011, Oracle and/or its affiliates. All rights reserved.
*
* Sun elects to use this software under the MPL license.
*/
/*
* 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>
#include <sys/systm.h>
#include <sys/param.h>
#ifdef _KERNEL
#include <sys/kmem.h>
#else
#include <string.h>
#include <strings.h>
#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);
}
}
SECITEM_FreeItem(result, (item == NULL) ? PR_TRUE : PR_FALSE);
/*
* If item is not NULL, the above also sets 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);
to->len = from->len;
} else {
to->data = 0;
to->len = 0;
}
return SECSuccess;
}
void
SECITEM_FreeItem(SECItem *zap, PRBool freeit)
{
if (zap) {
#ifdef _KERNEL
kmem_free(zap->data, zap->len);
#else
free(zap->data);
#endif
zap->data = 0;
zap->len = 0;
if (freeit) {
#ifdef _KERNEL
kmem_free(zap, sizeof (SECItem));
#else
free(zap);
#endif
}
}
}
/* END CSTYLED */
void
SECITEM_ZfreeItem(SECItem *zap, PRBool freeit)
{
if (zap) {
PORT_ZFree(zap->data, zap->len);
zap->data = 0;
zap->len = 0;
if (freeit) {
PORT_ZFree(zap, sizeof (SECItem));
}
}
}