o_str.c
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上传日期:2020-08-09
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- /* 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"
- 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
- }
- 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
- }
- 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;
- }