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/*
* 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 Netscape are
* Copyright (C) 1994-2000 Netscape Communications Corporation. All
* Rights Reserved.
*
* Contributor(s):
*
* Alternatively, the contents of this file may be used under the
* terms of the GNU General Public License Version 2 or later (the
* "GPL"), in which case the provisions of the GPL are applicable
* instead of those above. If you wish to allow use of your
* version of this file only under the terms of the GPL and not to
* allow others to use your version of this file under the MPL,
* indicate your decision by deleting the provisions above and
* replace them with the notice and other provisions required by
* the GPL. If you do not delete the provisions above, a recipient
* may use your version of this file under either the MPL or the
* GPL.
*/
#ifdef DEBUG
static const char CVS_ID[] = "@(#) $RCSfile$ $Revision$ $Date$ $Name$";
#endif /* DEBUG */
/*
* libc.c
*
* This file contains our wrappers/reimplementations for "standard"
* libc functions. Things like "memcpy." We add to this as we need
* it. Oh, and let's keep it in alphabetical order, should it ever
* get large. Most string/character stuff should be in utf8.c, not
* here. This file (and maybe utf8.c) should be the only ones in
* NSS to include files with angle brackets.
*/
#ifndef BASE_H
#include "base.h"
#endif /* BASE_H */
#include <string.h> /* memcpy, memset */
/*
* nsslibc_memcpy
* nsslibc_memset
* nsslibc_offsetof
* nsslibc_memequal
*/
/*
* nsslibc_memcpy
*
* Errors:
* NSS_ERROR_INVALID_POINTER
*
* Return value:
* NULL on error
* The destination pointer on success
*/
NSS_IMPLEMENT void *
nsslibc_memcpy
(
void *dest,
const void *source,
PRUint32 n
)
{
#ifdef NSSDEBUG
if( ((void *)NULL == dest) || ((const void *)NULL == source) ) {
nss_SetError(NSS_ERROR_INVALID_POINTER);
return (void *)NULL;
}
#endif /* NSSDEBUG */
return memcpy(dest, source, (size_t)n);
}
/*
* nsslibc_memset
*
* Errors:
* NSS_ERROR_INVALID_POINTER
*
* Return value:
* NULL on error
* The destination pointer on success
*/
NSS_IMPLEMENT void *
nsslibc_memset
(
void *dest,
PRUint8 byte,
PRUint32 n
)
{
#ifdef NSSDEBUG
if( ((void *)NULL == dest) ) {
nss_SetError(NSS_ERROR_INVALID_POINTER);
return (void *)NULL;
}
#endif /* NSSDEBUG */
return memset(dest, (int)byte, (size_t)n);
}
/*
* nsslibc_memequal
*
* Errors:
* NSS_ERROR_INVALID_POINTER
*
* Return value:
* PR_TRUE if they match
* PR_FALSE if they don't
* PR_FALSE upon error
*/
NSS_IMPLEMENT PRBool
nsslibc_memequal
(
const void *a,
const void *b,
PRUint32 len,
PRStatus *statusOpt
)
{
#ifdef NSSDEBUG
if( (((void *)NULL == a) || ((void *)NULL == b)) ) {
nss_SetError(NSS_ERROR_INVALID_POINTER);
if( (PRStatus *)NULL != statusOpt ) {
*statusOpt = PR_FAILURE;
}
return PR_FALSE;
}
#endif /* NSSDEBUG */
if( (PRStatus *)NULL != statusOpt ) {
*statusOpt = PR_SUCCESS;
}
if( 0 == memcmp(a, b, len) ) {
return PR_TRUE;
} else {
return PR_FALSE;
}
}
/*
* nsslibc_memcmp
*/
NSS_IMPLEMENT PRInt32
nsslibc_memcmp
(
const void *a,
const void *b,
PRUint32 len,
PRStatus *statusOpt
)
{
int v;
#ifdef NSSDEBUG
if( (((void *)NULL == a) || ((void *)NULL == b)) ) {
nss_SetError(NSS_ERROR_INVALID_POINTER);
if( (PRStatus *)NULL != statusOpt ) {
*statusOpt = PR_FAILURE;
}
return -2;
}
#endif /* NSSDEBUG */
if( (PRStatus *)NULL != statusOpt ) {
*statusOpt = PR_SUCCESS;
}
v = memcmp(a, b, len);
return (PRInt32)v;
}
/*
* offsetof is a preprocessor definition
*/
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