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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
/*
* 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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