/* crypto/o_str.c -*- mode:C; c-file-style: "eay" -*- */

/* Written by Richard Levitte (richard@levitte.org) for the OpenSSL

 * project 2003.

 */

/* ====================================================================

 * Copyright (c) 2003 The OpenSSL Project.  All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions

 * are met:

 *

 * 1. Redistributions of source code must retain the above copyright

 *    notice, this list of conditions and the following disclaimer. 

 *

 * 2. Redistributions in binary form must reproduce the above copyright

 *    notice, this list of conditions and the following disclaimer in

 *    the documentation and/or other materials provided with the

 *    distribution.

 *

 * 3. All advertising materials mentioning features or use of this

 *    software must display the following acknowledgment:

 *    "This product includes software developed by the OpenSSL Project

 *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"

 *

 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to

 *    endorse or promote products derived from this software without

 *    prior written permission. For written permission, please contact

 *    openssl-core@openssl.org.

 *

 * 5. Products derived from this software may not be called "OpenSSL"

 *    nor may "OpenSSL" appear in their names without prior written

 *    permission of the OpenSSL Project.

 *

 * 6. Redistributions of any form whatsoever must retain the following

 *    acknowledgment:

 *    "This product includes software developed by the OpenSSL Project

 *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"

 *

 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY

 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR

 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT

 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;

 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)

 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,

 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)

 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED

 * OF THE POSSIBILITY OF SUCH DAMAGE.

 * ====================================================================

 *

 * This product includes cryptographic software written by Eric Young

 * (eay@cryptsoft.com).  This product includes software written by Tim

 * Hudson (tjh@cryptsoft.com).

 *

 */

#include <ctype.h>

#include <e_os.h>

#include "o_str.h"

EXPORT_C int OPENSSL_strncasecmp(const char *str1, const char *str2, size_t n)

	{

#if defined(OPENSSL_IMPLEMENTS_strncasecmp)

	while (*str1 && *str2 && n)

		{

		int res = toupper(*str1) - toupper(*str2);

		if (res) return res < 0 ? -1 : 1;

		str1++;

		str2++;

		n--;

		}

	if (n == 0)

		return 0;

	if (*str1)

		return 1;

	if (*str2)

		return -1;

		return 0;

#else

	/* Recursion hazard warning! Whenever strncasecmp is #defined as

	 * OPENSSL_strncasecmp, OPENSSL_IMPLEMENTS_strncasecmp must be

	 * defined as well. */

	return strncasecmp(str1, str2, n);

#endif

	}

EXPORT_C int OPENSSL_strcasecmp(const char *str1, const char *str2)

	{

#if defined(OPENSSL_IMPLEMENTS_strncasecmp)

	return OPENSSL_strncasecmp(str1, str2, (size_t)-1);

#else

	return strcasecmp(str1, str2);

#endif

	}

EXPORT_C int OPENSSL_memcmp(const void *v1,const void *v2,size_t n)

	{

	const unsigned char *c1=v1,*c2=v2;

	int ret=0;

	while(n && (ret=*c1-*c2)==0) n--,c1++,c2++;

	return ret;

	}