/* port.c 
 *
 * Copyright (C) 2014 wolfSSL Inc.
 *
 * This file is part of wolfSSH.
 *
 * wolfSSH is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * wolfSSH 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor,
 * Boston, MA  02110-1301, USA.
 */


/*
 * The port module wraps standard C library functions with macros to
 * cover portablility issues when building in environments that rename
 * those functions. This module also provides local versions of some
 * standard C library functions that are missing on some platforms.
 */


#ifdef HAVE_CONFIG_H
    #include <config.h>
#endif

#include <wolfssh/port.h>


#ifndef WSTRING_USER

char* wstrnstr(const char* s1, const char* s2, unsigned int n)
{
    unsigned int s2_len = (unsigned int)WSTRLEN(s2);

    if (s2_len == 0)
        return (char*)s1;

    while (n >= s2_len && s1[0]) {
        if (s1[0] == s2[0])
            if (WMEMCMP(s1, s2, s2_len) == 0)
                return (char*)s1;
        s1++;
        n--;
    }

    return NULL;
}

#endif /* WSTRING_USER */